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Trueman CN, Artetxe-Arrate I, Kerr LA, Meijers AJS, Rooker JR, Sivankutty R, Arrizabalaga H, Belmonte A, Deguara S, Goñi N, Rodriguez-Marin E, Dettman DL, Santos MN, Karakulak FS, Tinti F, Tsukahara Y, Fraile I. Thermal sensitivity of field metabolic rate predicts differential futures for bluefin tuna juveniles across the Atlantic Ocean. Nat Commun 2023; 14:7379. [PMID: 38012173 PMCID: PMC10682405 DOI: 10.1038/s41467-023-41930-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Accepted: 09/25/2023] [Indexed: 11/29/2023] Open
Abstract
Changing environmental temperatures impact the physiological performance of fishes, and consequently their distributions. A mechanistic understanding of the linkages between experienced temperature and the physiological response expressed within complex natural environments is often lacking, hampering efforts to project impacts especially when future conditions exceed previous experience. In this study, we use natural chemical tracers to determine the individual experienced temperatures and expressed field metabolic rates of Atlantic bluefin tuna (Thunnus thynnus) during their first year of life. Our findings reveal that the tuna exhibit a preference for temperatures 2-4 °C lower than those that maximise field metabolic rates, thereby avoiding temperatures warm enough to limit metabolic performance. Based on current IPCC projections, our results indicate that historically-important spawning and nursery grounds for bluefin tuna will become thermally limiting due to warming within the next 50 years. However, limiting global warming to below 2 °C would preserve habitat conditions in the Mediterranean Sea for this species. Our approach, which is based on field observations, provides predictions of animal performance and behaviour that are not constrained by laboratory conditions, and can be extended to any marine teleost species for which otoliths are available.
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Affiliation(s)
- Clive N Trueman
- Ocean and Earth Science, University of Southampton, Southampton, SO143ZH, UK.
| | - Iraide Artetxe-Arrate
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Herrera Kaia, Portualdea z/g, 20110, Pasaia, Gipuzkoa, Spain
| | - Lisa A Kerr
- University of Maine, Gulf of Maine Research Institute, 350 Commercial Street, Portland, ME, 04101, USA
| | - Andrew J S Meijers
- British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| | - Jay R Rooker
- Department of Marine Biology, Department of Ecology and Conservation Biology, Texas A&M University, 200 Seawolf Parkway, Galveston, TX, 77554, USA
| | - Rahul Sivankutty
- British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
| | - Haritz Arrizabalaga
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Herrera Kaia, Portualdea z/g, 20110, Pasaia, Gipuzkoa, Spain
| | - Antonio Belmonte
- TAXON Estudios Ambientales S.L. C/Uruguay s/n, 30820, Alcantarilla, Murcia, Spain
| | - Simeon Deguara
- AquaBio Tech Ltd., Central Complex, Mosta, MST1761, Malta
| | - Nicolas Goñi
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Herrera Kaia, Portualdea z/g, 20110, Pasaia, Gipuzkoa, Spain
- Natural Resources Institute Finland, Itäinen Pitkäkatu 4 A, 20520, Turku, Finland
| | - Enrique Rodriguez-Marin
- Centro Oceanográfico de Santander (COST-IEO). Instituto Español de Oceanografía. Consejo Superior de Investigaciones Científicas (IEO-CSIC), C/ Severiano Ballesteros 16, 39004, Santander, Cantabria, Spain
| | - David L Dettman
- Environmental Isotope Laboratory, Dept. of Geosciences, University of Arizona, Tucson, AZ, 85721, USA
| | - Miguel Neves Santos
- Instituto Português do Mar e da Atmosfera, Olhão, Portugal. Currently at ICCAT Secretariat, Calle Corazón de Maria 8, Madrid, 28002, Spain
| | - F Saadet Karakulak
- Faculty of Aquatic Sciences, Istanbul University, Istanbul, 34134, Turkey
| | - Fausto Tinti
- Dept. Biological, Geological & Environmental Sciences, Alma Mater Studiorum - University of Bologna, via Sant'Alberto, 163 - 48123, Ravenna, Italy
| | - Yohei Tsukahara
- Fisheries Resources Institute, Japan Fisheries Research and Education Agency, Kanagawa, 236-8648, Japan
| | - Igaratza Fraile
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Herrera Kaia, Portualdea z/g, 20110, Pasaia, Gipuzkoa, Spain
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2
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Cruz-Castán R, Saber S, Meiners-Mandujano C, Gómez Vives MJ, Curiel-Ramirez S, Galindo-Cortes G, Macías D. Oocyte dynamics for Atlantic bluefin tuna (Thunnus thynnus) in the southern Gulf of Mexico: A comparative assessment of Mediterranean spawners using two stereological methods. J Fish Biol 2023; 103:1054-1072. [PMID: 37466346 DOI: 10.1111/jfb.15504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 07/09/2023] [Accepted: 07/17/2023] [Indexed: 07/20/2023]
Abstract
Although most research focused on the northern Gulf of Mexico for western Atlantic bluefin tuna, the histological records of reproductive activity of this species in the southern Gulf of Mexico (Mexican waters) have been presented for the first time. This work is the first to study oocyte dynamics in Atlantic bluefin tuna caught in the southern Gulf of Mexico by assessing and comparing them with Mediterranean stock (BFT-E) through stereology using two different methods. Regardless of Atlantic bluefin tuna females returning to their respective spawning grounds at different months in the southern Gulf of Mexico and the Mediterranean, both stocks arrived reproductively inactive and remained in these zones during periods of similar length; they were reproductively active until March for the southern Gulf of Mexico and May for the Mediterranean females. The comparison of the size structure between the two stocks examined using kernel density estimators demonstrated a quite remarkable difference in mean fork lengths between stocks. The ovarian oocyte density, that is, the number of oocytes per gram of ovary, for each gonad stage predicted using the Weibel and Gomez and oocyte packing density (OPD) methods did not significantly differ between stocks and showed that advanced vitellogenic oocytes from spawning-capable females are an appropriate indicator to estimate potential fecundity, presenting values of c. 1273 and ~1355 eggs per gram for the southern Gulf of Mexico and Mediterranean females, respectively. Females caught in Mexican waters (southern Gulf of Mexico) were larger than those caught in the Mediterranean; however, it was demonstrated that the length and weight of females did not affect ovarian oocyte density production. In addition, densities estimated for each gonad stage using W&G and OPD methods did not differ between stocks and presented equal patterns in their oocyte dynamics. These findings contribute to a better understanding of the reproductive biology of Atlantic bluefin tuna, especially in the southern Gulf of Mexico, due to the lack of information regarding this zone, and may allow to support strategies for proper assessment, management, and conservation.
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Affiliation(s)
- Roberto Cruz-Castán
- Posgrado en Ecología y Pesquerías, Universidad Veracruzana, Boca del Rio, Mexico
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Veracruzana, Veracruz, Mexico
| | - Sámar Saber
- Centro Oceanográfico de Murcia, Singular Scientific and Technical Infrastructure for the Bluefin Tuna Aquaculture (ICTS-ICAR), Instituto Español de Oceanografía (IEO-CSIC), Murcia, Spain
| | | | - María José Gómez Vives
- Centro Oceanográfico de Málaga, Instituto Español de Oceanografía (IEO-CSIC), Fuengirola, Spain
| | - Sergio Curiel-Ramirez
- Facultad de Ciencias Marinas, Universidad Autónoma de Baja California, Ensenada, Mexico
| | | | - David Macías
- Centro Oceanográfico de Málaga, Instituto Español de Oceanografía (IEO-CSIC), Fuengirola, Spain
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3
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Rooker JR, Sluis MZ, Kitchens LL, Dance MA, Falterman B, Lee JM, Liu H, Miller N, Murua H, Rooker AM, Saillant E, Walter J, David Wells RJ. Nursery origin of yellowfin tuna in the western Atlantic Ocean: significance of Caribbean Sea and trans-Atlantic migrants. Sci Rep 2023; 13:16277. [PMID: 37770551 PMCID: PMC10539535 DOI: 10.1038/s41598-023-43163-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 09/20/2023] [Indexed: 09/30/2023] Open
Abstract
Natural geochemical markers in the otolith of yellowfin tuna (Thunnus albacares) were used to establish nursery-specific signatures for investigating the origin of fish captured in the western Atlantic Ocean (WAO). Two classes of chemical markers (trace elements, stable isotopes) were used to first establish nursery-specific signatures of age-0 yellowfin tuna from four primary production zones in the Atlantic Ocean: Gulf of Mexico, Caribbean Sea, Cape Verde, and Gulf of Guinea. Next, mixture and individual assignment methods were applied to predict the origin of sub-adult and adult yellowfin tuna from two regions in the WAO (Gulf of Mexico, Mid Atlantic Bight) by relating otolith core signatures (corresponding to age-0 period) to baseline signatures of age-0 fish from each nursery. Significant numbers of migrants from Caribbean Sea and eastern Atlantic Ocean (EAO) production zones (Gulf of Guinea, Cape Verde) were detected in the WAO, suggesting that fisheries in this region were subsidized by outside spawning/nursery areas. Contributions from local production (Gulf of Mexico) were also evident in samples from both WAO fisheries, but highly variable from year to year. High levels of mixing by yellowfin tuna from the different production zones and pronounced interannual trends in nursery-specific contribution rates in the WAO emphasize the complex and dynamic nature of this species' stock structure and population connectivity. Given that geographic shifts in distribution across national or political boundaries leads to governance and management challenges, this study highlights the need for temporally resolved estimates of nursery origin to refine assessment models and promote the sustainable harvest of this species.
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Affiliation(s)
- Jay R Rooker
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77553, USA.
- Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, 77843, USA.
| | - Michelle Zapp Sluis
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77553, USA
| | - Larissa L Kitchens
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77553, USA
| | - Michael A Dance
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA, 70803, USA
| | | | - Jessica M Lee
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77553, USA
| | - Hui Liu
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77553, USA
| | - Nathaniel Miller
- Jackson School of Geosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Hilario Murua
- International Seafood Sustainability Foundation, Pittsburgh, PA, 15201-1820, USA
- AZTI Marine Research, Basque Research and Technology Alliance (BRTA), Pasaia, Spain
| | - Alexandra M Rooker
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77553, USA
| | - Eric Saillant
- School of Ocean Science and Engineering, University of Southern Mississippi, Ocean Springs, MS, 39564, USA
| | - John Walter
- Southeast Fisheries Science Center, NOAA Fisheries, Miami, FL, 33149, USA
| | - R J David Wells
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, 77553, USA
- Department of Ecology and Conservation Biology, Texas A&M University, College Station, TX, 77843, USA
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Reis-Santos P, Gillanders BM, Sturrock AM, Izzo C, Oxman DS, Lueders-Dumont JA, Hüssy K, Tanner SE, Rogers T, Doubleday ZA, Andrews AH, Trueman C, Brophy D, Thiem JD, Baumgartner LJ, Willmes M, Chung MT, Charapata P, Johnson RC, Trumble S, Heimbrand Y, Limburg KE, Walther BD. Reading the biomineralized book of life: expanding otolith biogeochemical research and applications for fisheries and ecosystem-based management. Rev Fish Biol Fisheries 2023; 33:411-449. [PMID: 0 DOI: 10.1007/s11160-022-09720-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 07/15/2022] [Indexed: 05/26/2023]
Abstract
AbstractChemical analysis of calcified structures continues to flourish, as analytical and technological advances enable researchers to tap into trace elements and isotopes taken up in otoliths and other archival tissues at ever greater resolution. Increasingly, these tracers are applied to refine age estimation and interpretation, and to chronicle responses to environmental stressors, linking these to ecological, physiological, and life-history processes. Here, we review emerging approaches and innovative research directions in otolith chemistry, as well as in the chemistry of other archival tissues, outlining their value for fisheries and ecosystem-based management, turning the spotlight on areas where such biomarkers can support decision making. We summarise recent milestones and the challenges that lie ahead to using otoliths and archival tissues as biomarkers, grouped into seven, rapidly expanding and application-oriented research areas that apply chemical analysis in a variety of contexts, namely: (1) supporting fish age estimation; (2) evaluating environmental stress, ecophysiology and individual performance; (3) confirming seafood provenance; (4) resolving connectivity and movement pathways; (5) characterising food webs and trophic interactions; (6) reconstructing reproductive life histories; and (7) tracing stock enhancement efforts. Emerging research directions that apply hard part chemistry to combat seafood fraud, quantify past food webs, as well as to reconcile growth, movement, thermal, metabolic, stress and reproductive life-histories provide opportunities to examine how harvesting and global change impact fish health and fisheries productivity. Ultimately, improved appreciation of the many practical benefits of archival tissue chemistry to fisheries and ecosystem-based management will support their increased implementation into routine monitoring.
Graphical abstract
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McDowell JR, Bravington M, Grewe PM, Lauretta M, Walter JF 3rd, Baylis SM, Gosselin T, Malca E, Gerard T, Shiroza A, Lamkin JT, Biesack EE, Zapfe G, Ingram W, Davies C, Porch C. Low levels of sibship encourage use of larvae in western Atlantic bluefin tuna abundance estimation by close-kin mark-recapture. Sci Rep 2022; 12:18606. [PMID: 36329078 DOI: 10.1038/s41598-022-20862-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 09/20/2022] [Indexed: 11/05/2022] Open
Abstract
Globally, tunas are among the most valuable fish stocks, but are also inherently difficult to monitor and assess. Samples of larvae of Western Atlantic bluefin tuna Thunnus thynnus (Linnaeus, 1758) from standardized annual surveys in the northern Gulf of Mexico provide a potential source of "offspring" for close-kin mark-recapture (CKMR) estimates of abundance. However, the spatial patchiness and highly skewed numbers of larvae per tow suggest sampled larvae may come from a small number of parents, compromising the precision of CKMR. We used high throughput genomic profiling to study sibship within and among larval tows from the 2016 standardized Gulf-wide survey compared to targeted sampling carried out in 2017. Full- and half-siblings were found within both years, with 12% of 156 samples in 2016 and 56% of 317 samples in 2017 having at least one sibling. There were also two pairs of cross cohort half-siblings. Targeted sampling increased the number of larvae collected per sampling event but resulted in a higher proportion of siblings. The combined effective sample size across both years was about 75% of the nominal size, indicating that Gulf of Mexico larval collections could be a suitable source of juveniles for CKMR in Western Atlantic bluefin tuna.
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Luque PL, Artetxe-Arrate I, Bidegain G, Sakai S, Claverie F, Pécheyran C, Fraile I, Murua H, Varela JL, Medina A, Arrizabalaga H. Chemical signatures in fin spine edge of Atlantic bluefin tuna (Thunnus thynnus) can serve as habitat markers of geographically distinct marine environments. Heliyon 2022; 8:e11757. [DOI: 10.1016/j.heliyon.2022.e11757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 10/05/2022] [Accepted: 11/14/2022] [Indexed: 11/22/2022] Open
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Mohan JA, Dewar H, Snodgrass OE, Miller NR, Tanaka Y, Ohshimo S, Rooker JR, Francis M, Wells RJD. Otolith geochemistry reflects life histories of Pacific bluefin tuna. PLoS One 2022; 17:e0275899. [PMID: 36240134 DOI: 10.1371/journal.pone.0275899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 09/26/2022] [Indexed: 11/19/2022] Open
Abstract
Understanding biological and environmental factors that influence movement behaviors and population connectivity of highly migratory fishes is essential for cooperative international management and conservation of exploited populations, like bluefin tuna. Pacific bluefin tuna Thunnus orientalis (PBT) spawn in the western Pacific Ocean and then juveniles disperse to foraging grounds across the North Pacific. Several techniques have been used to characterize the distribution and movement of PBT, but few methods can provide complete records across ontogeny from larvae to adult in individual fish. Here, otolith biominerals of large PBT collected from the western, eastern, and south Pacific Ocean, were analyzed for a suite of trace elements across calcified/proteinaceous growth zones to investigate patterns across ontogeny. Three element:Ca ratios, Li:Ca, Mg:Ca, and Mn:Ca displayed enrichment in the otolith core, then decreased to low stable levels after age 1-2 years. Thermal and metabolic physiologies, common diets, or ambient water chemistry likely influenced otolith crystallization, protein content, and elemental incorporation in early life. Although similar patterns were also exhibited for otolith Sr:Ca, Ba:Ca and Zn:Ca in the first year, variability in these elements differed significantly after age-2 and in the otolith edges by capture region, suggesting ocean-specific environmental factors or growth-related physiologies affected otolith mineralization across ontogeny.
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Dolton HR, Jackson AL, Drumm A, Harding L, Ó Maoiléidigh N, Maxwell H, O’Neill R, Houghton JDR, Payne NL. Short-term behavioural responses of Atlantic bluefin tuna to catch-and-release fishing. Conserv Physiol 2022; 10:coac060. [PMID: 36148473 PMCID: PMC9487900 DOI: 10.1093/conphys/coac060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 08/03/2022] [Accepted: 08/15/2022] [Indexed: 06/16/2023]
Abstract
Catch-and-release (C&R) angling is often touted as a sustainable form of ecotourism, yet the fine-scale behaviour and physiological responses of released fish is often unknown, especially for hard-to-study large pelagic species like Atlantic bluefin tuna (ABFT; Thunnus thunnus). Multi-channel sensors were deployed and recovered from 10 ABFTs in a simulated recreational C&R event off the west coast of Ireland. Data were recorded from 6 to 25 hours, with one ABFT (tuna X) potentially suffering mortality minutes after release. Almost all ABFTs (n = 9, including tuna X) immediately and rapidly (vertical speeds of ~2.0 m s-1) made powered descents and used 50-60% of the available water column within 20 seconds, before commencing near-horizontal swimming ~60 seconds post-release. Dominant tailbeat frequency was ~50% higher in the initial hours post-release and appeared to stabilize at 0.8-1.0 Hz some 5-10 hours post-release. Results also suggest different short-term behavioural responses to noteworthy variations in capture and handling procedures (injury and reduced air exposure events). Our results highlight both the immediate and longer-term effects of C&R on ABFTs and that small variations in C&R protocols can influence physiological and behavioural responses of species like the commercially valuable and historically over-exploited ABFT.
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Affiliation(s)
- Haley R Dolton
- Correspondence author: Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin, D02 PN40, Ireland.
| | - Andrew L Jackson
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin, D02 PN40, Ireland
| | - Alan Drumm
- Marine Institute Newport, Fisheries Ecosystems Advisory Services, Furnace, County Mayo, F28PF65, Ireland
| | - Lucy Harding
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin, D02 PN40, Ireland
| | - Niall Ó Maoiléidigh
- Marine Institute Newport, Fisheries Ecosystems Advisory Services, Furnace, County Mayo, F28PF65, Ireland
| | - Hugo Maxwell
- Marine Institute Newport, Fisheries Ecosystems Advisory Services, Furnace, County Mayo, F28PF65, Ireland
| | - Ross O’Neill
- Marine Institute Newport, Fisheries Ecosystems Advisory Services, Furnace, County Mayo, F28PF65, Ireland
| | - Jonathan D R Houghton
- School of Biological Sciences, Queen’s University Belfast, BT9 7DL, Northern Ireland
| | - Nicholas L Payne
- Department of Zoology, School of Natural Sciences, Trinity College Dublin, Dublin, D02 PN40, Ireland
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Germanov ES, Pierce SJ, Marshall AD, Hendrawan IG, Kefi A, Bejder L, Loneragan N. Residency, movement patterns, behavior and demographics of reef manta rays in Komodo National Park. PeerJ 2022; 10:e13302. [PMID: 35602898 PMCID: PMC9119296 DOI: 10.7717/peerj.13302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 03/29/2022] [Indexed: 01/13/2023] Open
Abstract
Background The reef manta ray (Mobula alfredi) is a globally threatened species and an iconic tourist attraction for visitors to Indonesia's Komodo National Park (NP). In 2013, manta ray fishing was banned in Komodo NP and its surroundings, preceding the nationwide manta ray protection in 2014. Over a decade ago, a previous acoustic telemetry study demonstrated that reef manta rays had high fidelity to sites within the park, while more recent photo-identification data indicated that some individuals move up to 450 km elsewhere. Characterization of manta ray demographics, behavior, and a focused assessment on site use of popular tourism locations within the park is vital to assist the Komodo NP Management Authority formulate appropriate manta ray conservation and management policies. Methods This study uses a long-term library (MantaMatcher.org) of photo-identification data collected by researchers and citizen scientists to investigate manta ray demographics and habitat use within the park at four sites frequented by tour operators: Cauldron, Karang Makassar, Mawan, and Manta Alley. Residency and movements of manta rays were investigated with maximum likelihood analyses and Markov movement models. Results A total of 1,085 individual manta rays were identified from photographs dating from 2013 to 2018. In general, individual manta rays displayed a higher affinity to specific sites than others. The highest re-sighting probabilities came from the remote southern site, Manta Alley. Karang Makassar and Mawan are only ~5 km apart; however, manta rays displayed distinct site affinities. Exchange of individuals between Manta Alley and the two central sites (~35.5 km apart) occurred, particularly seasonally. More manta rays were recorded traveling from the south to the central area than vice versa. Female manta rays were more mobile than males. Similar demographic groups used Karang Makassar, Mawan, and Manta Alley for foraging, cleaning, cruising, or courtship activities. Conversely, a higher proportion of immature manta rays used the northern site, Cauldron, where foraging was commonly observed. Fishing gear-related injuries were noted on 56 individuals (~5%), and predatory injuries were present on 32 individuals (~3%). Tourism within the park increased from 2014 to 2017, with 34% more dive boats per survey at Karang Makassar and Mawan. Discussion The Komodo NP contains several distinct critical habitats for manta rays that encompass all demographics and accommodate seasonal manta ray movements. While the present study has not examined population trends, it does provide foundational data for such work. Continued research into manta ray abundance, long-range movements, and identifying and protecting other critical aggregation areas within the region is integral to securing the species' recovery. We provide management recommendations to limit undue pressure on manta rays and their critical habitats from tourism.
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Affiliation(s)
- Elitza S. Germanov
- Marine Megafauna Foundation, West Palm Beach, Florida, United States of America,Centre for Sustainable Aquatic Ecosystems, Harry Butler Institute, Murdoch University, Perth, Western Australia, Australia,Environmental and Conservation Sciences, Murdoch University, Perth, Western Australia, Australia
| | - Simon J. Pierce
- Marine Megafauna Foundation, West Palm Beach, Florida, United States of America
| | - Andrea D. Marshall
- Marine Megafauna Foundation, West Palm Beach, Florida, United States of America
| | - I. Gede Hendrawan
- Faculty of Marine Sciences and Fisheries, Universitas Udayana, Denpassar, Bali, Indonesia
| | - Ande Kefi
- Komodo National Park, Labuan Bajo, Flores, Indonesia
| | - Lars Bejder
- Centre for Sustainable Aquatic Ecosystems, Harry Butler Institute, Murdoch University, Perth, Western Australia, Australia,Environmental and Conservation Sciences, Murdoch University, Perth, Western Australia, Australia,Marine Mammal Research Program, Hawaii Institute of Marine Biology, University of Hawaii at Manoa, Honolulu, Hawaii, United States
| | - Neil Loneragan
- Centre for Sustainable Aquatic Ecosystems, Harry Butler Institute, Murdoch University, Perth, Western Australia, Australia,Environmental and Conservation Sciences, Murdoch University, Perth, Western Australia, Australia,Faculty of Fisheries and Marine Science, Bogor Institute of Agriculture, Bogor, West Java, Indonesia
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Lohmann KJ, Goforth KM, Mackiewicz AG, Lim DS, Lohmann CMF. Magnetic maps in animal navigation. J Comp Physiol A Neuroethol Sens Neural Behav Physiol 2022. [PMID: 34999936 DOI: 10.1007/s00359-021-01529-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 11/21/2021] [Accepted: 11/25/2021] [Indexed: 12/03/2022]
Abstract
In addition to providing animals with a source of directional or ‘compass’ information, Earth’s magnetic field also provides a potential source of positional or ‘map’ information that animals might exploit to assess location. In less than a generation, the idea that animals use Earth’s magnetic field as a kind of map has gone from a contentious hypothesis to a well-established tenet of animal navigation. Diverse animals ranging from lobsters to birds are now known to use magnetic positional information for a variety of purposes, including staying on track along migratory pathways, adjusting food intake at appropriate points in a migration, remaining within a suitable oceanic region, and navigating toward specific goals. Recent findings also indicate that sea turtles, salmon, and at least some birds imprint on the magnetic field of their natal area when young and use this information to facilitate return as adults, a process that may underlie long-distance natal homing (a.k.a. natal philopatry) in many species. Despite recent progress, much remains to be learned about the organization of magnetic maps, how they develop, and how animals use them in navigation.
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Xie J, Bian Z, Wu Q, Tao L, Wu F, Lin T. Global knowledge domain and prospects in tuna research: A bibliometric analysis. Aquaculture and Fisheries 2021. [DOI: 10.1016/j.aaf.2021.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Wells RJD, Quesnell VA, Humphreys RL, Dewar H, Rooker JR, Alvarado Bremer J, Snodgrass OE. Nursery origin and population connectivity of swordfish Xiphias gladius in the North Pacific Ocean. J Fish Biol 2021; 99:354-363. [PMID: 33751556 PMCID: PMC8519116 DOI: 10.1111/jfb.14723] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/02/2021] [Accepted: 03/09/2021] [Indexed: 05/31/2023]
Abstract
Element:Ca ratios in the otolith cores of young-of-the-year (YOY) swordfish, Xiphias gladius, were used as natural tracers to predict the nursery origin of subadult and adult swordfish from three foraging grounds in the North Pacific Ocean (NPO). First, the chemistry of otolith cores (proxy for nursery origin) was used to develop nursery-specific elemental signatures in YOY swordfish. Sagittal otoliths of YOY swordfish were collected from four regional nurseries in the NPO between 2000 and 2005: (1) Central Equatorial North Pacific Ocean (CENPO), (2) Central North Pacific Ocean (CNPO), (3) Eastern Equatorial North Pacific Ocean (EENPO) and (4) Western North Pacific Ocean (WNPO). Calcium (43 Ca), magnesium (24 Mg), strontium (88 Sr) and barium (138 Ba) were quantified in the otolith cores of YOY swordfish using laser ablation inductively coupled plasma mass spectrometry. Univariate tests indicated that three element:Ca ratios (Mg:Ca, Sr:Ca and Ba:Ca) were significantly different among nurseries. Overall classification success of YOY swordfish to their nursery of collection was 72% based on quadratic discriminant analysis. Next, element:Ca ratios in the otolith cores of subadults and adults collected from three foraging grounds where targeted fisheries exist (Hawaii, California and Mexico) were examined to calculate nursery-specific contribution estimates. Mixed-stock analysis indicated that the CENPO nursery contributed the majority of individuals to all three foraging grounds (Hawaii 45.6 ± 13.2%, California 84.6 ± 10.8% and Mexico 64.5 ± 15.9%). The results from this study highlight the importance of the CENPO nursery and provide researchers and fisheries managers with new information on the connectivity of the swordfish population in the NPO.
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Affiliation(s)
- R. J. David Wells
- Department of Marine BiologyTexas A&M University at GalvestonGalvestonTexasUSA
- Department of Ecology & Conservation BiologyTexas A&M UniversityCollege StationTexasUSA
| | | | - Robert L. Humphreys
- Retired, Pacific Islands Fisheries Science CenterNational Marine Fisheries ServiceHonoluluHawaiiUSA
| | - Heidi Dewar
- Southwest Fisheries Science CenterNational Marine Fisheries ServiceLa JollaCaliforniaUSA
| | - Jay R. Rooker
- Department of Marine BiologyTexas A&M University at GalvestonGalvestonTexasUSA
- Department of Ecology & Conservation BiologyTexas A&M UniversityCollege StationTexasUSA
| | - Jaime Alvarado Bremer
- Department of Marine BiologyTexas A&M University at GalvestonGalvestonTexasUSA
- Department of Ecology & Conservation BiologyTexas A&M UniversityCollege StationTexasUSA
| | - Owyn E. Snodgrass
- Southwest Fisheries Science CenterNational Marine Fisheries ServiceLa JollaCaliforniaUSA
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13
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Rooker JR, Wells RJD, Block BA, Liu H, Baumann H, Chiang WC, Sluis MZ, Miller NR, Mohan JA, Ohshimo S, Tanaka Y, Dance MA, Dewar H, Snodgrass OE, Shiao JC. Natal origin and age-specific egress of Pacific bluefin tuna from coastal nurseries revealed with geochemical markers. Sci Rep 2021; 11:14216. [PMID: 34244525 DOI: 10.1038/s41598-021-93298-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 06/23/2021] [Indexed: 02/06/2023] Open
Abstract
Geochemical chronologies were constructed from otoliths of adult Pacific bluefin tuna (PBT) to investigate the timing of age-specific egress of juveniles from coastal nurseries in the East China Sea or Sea of Japan to offshore waters of the Pacific Ocean. Element:Ca chronologies were developed for otolith Li, Mg, Mn, Zn, Sr, and Ba, and our assessment focused on the section of the otolith corresponding to the age-0 to age-1 + interval. Next, we applied a common time-series approach to geochemical profiles to identify divergences presumably linked to inshore-offshore migrations. Conspicuous geochemical shifts were detected during the juvenile interval for Mg:Ca, Mn:Ca, and Sr:Ca that were indicative of coastal-offshore transitions or egress generally occurring for individuals approximately 4-6 mo. old, with later departures (6 mo. or older) linked to overwintering being more limited. Changepoints in otolith Ba:Ca profiles were most common in the early age-1 period (ca. 12-16 mo.) and appear associated with entry into upwelling areas such as the California Current Large Marine Ecosystem following trans-Pacific migrations. Natal origin of PBT was also predicted using the early life portion of geochemical profile in relation to a baseline sample comprised of age-0 PBT from the two primary spawning areas in the East China Sea and Sea of Japan. Mixed-stock analysis indicated that the majority (66%) of adult PBT in our sample originated from the East China Sea, but individuals of Sea of Japan origin were also detected in the Ryukyu Archipelago.
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14
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Johnstone C, Pérez M, Malca E, Quintanilla JM, Gerard T, Lozano-Peral D, Alemany F, Lamkin J, García A, Laiz-Carrión R. Genetic connectivity between Atlantic bluefin tuna larvae spawned in the Gulf of Mexico and in the Mediterranean Sea. PeerJ 2021; 9:e11568. [PMID: 34178457 PMCID: PMC8210807 DOI: 10.7717/peerj.11568] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 05/16/2021] [Indexed: 12/11/2022] Open
Abstract
The highly migratory Atlantic bluefin tuna (ABFT) is currently managed as two distinct stocks, in accordance with natal homing behavior and population structuring despite the absence of barriers to gene flow. Larval fish are valuable biological material for tuna molecular ecology. However, they have hardly been used to decipher the ABFT population structure, although providing the genetic signal from successful breeders. For the first time, cooperative field collection of tuna larvae during 2014 in the main spawning area for each stock, the Gulf of Mexico (GOM) and the Mediterranean Sea (MED), enabled us to assess the ABFT genetic structure in a precise temporal and spatial frame exclusively through larvae. Partitioning of genetic diversity at nuclear microsatellite loci and in the mitochondrial control region in larvae spawned contemporarily resulted in low significant fixation indices supporting connectivity between spawners in the main reproduction area for each population. No structuring was detected within the GOM after segregating nuclear diversity in larvae spawned in two hydrographically distinct regions, the eastern GOM (eGOM) and the western GOM (wGOM), with the larvae from eGOM being more similar to those collected in the MED than the larvae from wGOM. We performed clustering of genetically characterized ABFT larvae through Bayesian analysis and by Discriminant Analysis of Principal Components (DAPC) supporting the existence of favorable areas for mixing of ABFT spawners from Western and Eastern stocks, leading to gene flow and apparent connectivity between weakly structured populations. Our findings suggest that the eastern GOM is more prone for the mixing of breeders from the two ABFT populations. Conservation of this valuable resource exploited for centuries calls for intensification of tuna ichthyoplankton research and standardization of genetic tools for monitoring population dynamics.
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Affiliation(s)
- Carolina Johnstone
- Centro Oceanográfico de Málaga, Instituto Español de Oceanografía, Consejo Superior de Investigaciones Científicas, Fuengirola, Málaga, Spain
| | - Montse Pérez
- Centro Oceanográfico de Vigo, Instituto Español de Oceanografía, Consejo Superior de Investigaciones Científicas, Vigo, Pontevedra, Spain
| | - Estrella Malca
- Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, Florida, United States of America.,Southeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Miami, Florida, United States of America
| | - José María Quintanilla
- Centro Oceanográfico de Málaga, Instituto Español de Oceanografía, Consejo Superior de Investigaciones Científicas, Fuengirola, Málaga, Spain
| | - Trika Gerard
- Southeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Miami, Florida, United States of America
| | - Diego Lozano-Peral
- Centro de Supercomputación y Bioinnovación, Servicios Centrales de Apoyo a la Investigación, Universidad de Málaga, Málaga, Spain
| | - Francisco Alemany
- International Commision for the Conservation of Atlantic Tunas, Madrid, Spain
| | - John Lamkin
- Southeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Miami, Florida, United States of America
| | - Alberto García
- Centro Oceanográfico de Málaga, Instituto Español de Oceanografía, Consejo Superior de Investigaciones Científicas, Fuengirola, Málaga, Spain
| | - Raúl Laiz-Carrión
- Centro Oceanográfico de Málaga, Instituto Español de Oceanografía, Consejo Superior de Investigaciones Científicas, Fuengirola, Málaga, Spain
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15
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Bello G, Santamaria N, Corriero A. Multiple-Phase Biometric Relationships and Sexual Maturity in the Atlantic Bluefin Tuna, Thunnus thynnus (Osteichthyes: Scombridae). Animals (Basel) 2021; 11:ani11020390. [PMID: 33546441 PMCID: PMC7913654 DOI: 10.3390/ani11020390] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/22/2021] [Accepted: 01/29/2021] [Indexed: 11/16/2022] Open
Abstract
Most fish undergo distinct growth phases during ontogenesis. An extremely important passage from the juvenile to adult phase occurs at the onset of sexual maturity, which shows in body proportion and/or growth rate changes. These can be detected as change-points in biometric relationships. In this paper, the Atlantic bluefin tuna was analyzed to verify whether its somatic proportions show any sign of discontinuity during growth, i.e., whether any change-points may be detected in its somatic proportions. This fish has never been examined in this respect, and single-phase models, which are indeed easier to both compute and apply, are used in stock analyses. The following somatic relationships were analyzed in Atlantic bluefin tuna captured in the Mediterranean Sea between 1998 and 2010: "fork length-weight" regression, the von Bertalanffy growth equation, and "first dorsal spine cross section surface-fork length" regression. All of the examined relationships were found to be best modelled by multiple-phase regression equations, and all of them showed a change-point within the range of 101-110 cm fork length, which corresponds to 3-4 years of age. The present results, based on reproductive state-independent analyses, corroborate the disputed hypothesis that Atlantic bluefin tuna from the eastern stock in fact reproduce for the first time at this age.
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Affiliation(s)
| | - Nicoletta Santamaria
- Department of Emergency and Organ Transplantation, Section of Veterinary Clinics and Animal Production, University of Bari Aldo Moro, 70010 Valenzano, Italy; (N.S.); (A.C.)
| | - Aldo Corriero
- Department of Emergency and Organ Transplantation, Section of Veterinary Clinics and Animal Production, University of Bari Aldo Moro, 70010 Valenzano, Italy; (N.S.); (A.C.)
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16
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Camilieri-Asch V, Yopak KE, Rea A, Mitchell JD, Partridge JC, Collin SP. Convergence of Olfactory Inputs within the Central Nervous System of a Cartilaginous and a Bony Fish: An Anatomical Indicator of Olfactory Sensitivity. Brain Behav Evol 2020; 95:139-161. [PMID: 33171468 DOI: 10.1159/000510688] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 08/05/2020] [Indexed: 11/19/2022]
Abstract
The volume of the olfactory bulbs (OBs) relative to the brain has been used previously as a proxy for olfactory capabilities in many vertebrate taxa, including fishes. Although this gross approach has predictive power, a more accurate assessment of the number of afferent olfactory inputs and the convergence of this information at the level of the telencephalon is critical to our understanding of the role of olfaction in the behaviour of fishes. In this study, we used transmission electron microscopy to assess the number of first-order axons within the olfactory nerve (ON) and the number of second-order axons in the olfactory peduncle (OP) in established model species within cartilaginous (brownbanded bamboo shark, Chiloscyllium punctatum [CP]) and bony (common goldfish, Carassius auratus [CA]) fishes. The total number of axons varied from a mean of 18.12 ± 7.50 million in the ON to a mean of 0.38 ± 0.21 million in the OP of CP, versus 0.48 ± 0.16 million in the ON and 0.09 ± 0.02 million in the OP of CA. This resulted in a convergence ratio of approximately 50:1 and 5:1, respectively, for these two species. Based on astroglial ensheathing, axon type (unmyelinated [UM] and myelinated [M]) and axon size, we found no differentiated tracts in the OP of CP, whereas a lateral and a medial tract (both of which could be subdivided into two bundles or areas) were identified for CA, as previously described. Linear regression analyses revealed significant differences not only in axon density between species and locations (nerves and peduncles), but also in axon type and axon diameter (p < 0.05). However, UM axon diameter was larger in the OPs than in the nerve in both species (p = 0.005), with no significant differences in UM axon diameter in the ON (p = 0.06) between species. This study provides an in-depth analysis of the neuroanatomical organisation of the ascending olfactory pathway in two fish taxa and a quantitative anatomical comparison of the summation of olfactory information. Our results support the assertion that relative OB volume is a good indicator of the level of olfactory input and thereby a proxy for olfactory capabilities.
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Affiliation(s)
- Victoria Camilieri-Asch
- School of Biological Sciences, The University of Western Australia, Perth, Washington, Australia, .,Oceans Institute, The University of Western Australia, Perth, Washington, Australia,
| | - Kara E Yopak
- Department of Biology and Marine Biology and Center for Marine Science, University of North Carolina Wilmington, Wilmington, North Carolina, USA
| | - Alethea Rea
- Centre for Applied Statistics, The University of Western Australia, Perth, Washington, Australia
| | - Jonathan D Mitchell
- School of Biological Sciences, The University of Western Australia, Perth, Washington, Australia.,Oceans Institute, The University of Western Australia, Perth, Washington, Australia
| | - Julian C Partridge
- Oceans Institute, The University of Western Australia, Perth, Washington, Australia
| | - Shaun P Collin
- Oceans Institute, The University of Western Australia, Perth, Washington, Australia.,Ocean Graduate School, The University of Western Australia, Perth, Washington, Australia.,School of Life Sciences, La Trobe University, Melbourne, Victoria, Australia
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17
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Brophy D, Rodríguez-Ezpeleta N, Fraile I, Arrizabalaga H. Combining genetic markers with stable isotopes in otoliths reveals complexity in the stock structure of Atlantic bluefin tuna (Thunnus thynnus). Sci Rep 2020; 10:14675. [PMID: 32895410 PMCID: PMC7477220 DOI: 10.1038/s41598-020-71355-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 08/13/2020] [Indexed: 11/09/2022] Open
Abstract
Atlantic bluefin tuna (Thunnus thynnus) from the two main spawning populations in the Mediterranean and Gulf of Mexico occur together in the western, central and eastern Atlantic. Stock composition of catches from mixing areas is uncertain, presenting a major challenge to the sustainable management of the fisheries. This study combines genetic and chemical markers to develop an integrated method of population assignment. Stable isotope signatures (δ13C and δ18O) in the otolith core of adults from the two main spawning populations (adult baselines) showed less overlap than those of yearlings (12-18 months old) from western and eastern nursery areas suggesting that some exchange occurs towards the end of the yearling phase. The integrated model combined δ18O with four genetic markers (SNPs) to distinguish the adult baselines with greater accuracy than chemical or genetic markers alone. When used to assign individuals from the mixing areas to their population of origin, the integrated model resolved some (but not all) discrepancies between the chemistry and genetic methods. Some individuals in the mixing area had otolith δ18O values and genetic profiles which when taken together, were not representative of either population. These fish may originate from another Atlantic spawning area or may represent population contingents that move away from the main spawning areas during the first year of life. This complexity in stock structure is not captured by the current two-stock model.
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Affiliation(s)
- Deirdre Brophy
- Marine and Freshwater Research Centre, Galway Mayo Institute of Technology, Dublin road, Galway, H91 T8NW, Ireland.
| | | | - Igaratza Fraile
- Marine Research Division, AZTI, Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain
| | - Haritz Arrizabalaga
- Marine Research Division, AZTI, Txatxarramendi Ugartea Z/G, 48395, Sukarrieta, Bizkaia, Spain
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18
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Camilieri-Asch V, Shaw JA, Yopak KE, Chapuis L, Partridge JC, Collin SP. Volumetric analysis and morphological assessment of the ascending olfactory pathway in an elasmobranch and a teleost using diceCT. Brain Struct Funct 2020; 225:2347-2375. [PMID: 32870419 DOI: 10.1007/s00429-020-02127-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 07/31/2020] [Indexed: 11/26/2022]
Abstract
The size (volume or mass) of the olfactory bulbs in relation to the whole brain has been used as a neuroanatomical proxy for olfactory capability in a range of vertebrates, including fishes. Here, we use diffusible iodine-based contrast-enhanced computed tomography (diceCT) to test the value of this novel bioimaging technique for generating accurate measurements of the relative volume of the main olfactory brain areas (olfactory bulbs, peduncles, and telencephalon) and to describe the morphological organisation of the ascending olfactory pathway in model fish species from two taxa, the brownbanded bamboo shark Chiloscyllium punctatum and the common goldfish Carassius auratus. We also describe the arrangement of primary projections to the olfactory bulb and secondary projections to the telencephalon in both species. Our results identified substantially larger olfactory bulbs and telencephalon in C. punctatum compared to C. auratus (comprising approximately 5.2% vs. 1.8%, and 51.8% vs. 11.8% of the total brain volume, respectively), reflecting differences between taxa, but also possibly in the role of olfaction in the sensory ecology of these species. We identified segregated primary projections to the bulbs, associated with a compartmentalised olfactory bulb in C. punctatum, which supports previous findings in elasmobranch fishes. DiceCT imaging has been crucial for visualising differences in the morphological organisation of the olfactory system of both model species. We consider comparative neuroanatomical studies between representative species of both elasmobranch and teleost fish groups are fundamental to further our understanding of the evolution of the olfactory system in early vertebrates and the neural basis of olfactory abilities.
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Affiliation(s)
- Victoria Camilieri-Asch
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia.
- Oceans Institute, Indian Ocean Marine Research Centre (IOMRC), The University of Western Australia, Cnr Fairway and Service Road 4, Crawley, WA, 6009, Australia.
- Centre for Transformative Biomimetics in Bioengineering, Institute of Health and Biomedical Innovation (IHBI), Queensland University of Technology, Q Block Level 7, 60 Musk Avenue, Kelvin Grove, QLD, 4059, Australia.
| | - Jeremy A Shaw
- Centre for Microscopy, Characterisation and Analysis (CMCA), The University of Western Australia, 35 Stirling Highway, Crawley, WA, 6009, Australia
| | - Kara E Yopak
- Department of Biology and Marine Biology and the Center for Marine Science, University of North Carolina Wilmington, 5600 Marvin K Moss Lane, Wilmington, NC, 28409, USA
| | - Lucille Chapuis
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Geoffrey Pope, Stocker Road, Exeter, EX4 4QD, UK
| | - Julian C Partridge
- Oceans Institute, Indian Ocean Marine Research Centre (IOMRC), The University of Western Australia, Cnr Fairway and Service Road 4, Crawley, WA, 6009, Australia
| | - Shaun P Collin
- Oceans Institute, Indian Ocean Marine Research Centre (IOMRC), The University of Western Australia, Cnr Fairway and Service Road 4, Crawley, WA, 6009, Australia
- Ocean Graduate School, IOMRC, The University of Western Australia, Cnr Fairway and Service Entrance 4, Crawley, WA, 6009, Australia
- School of Life Sciences, La Trobe University, Plenty Road and Kingsbury Drive, Bundoora, VIC, 3086, Australia
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19
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Jamaludin NA, Mohd-Arshaad W, Mohd Akib NA, Zainal Abidin DH, Nghia NV, Nor SAM. Phylogeography of the Japanese scad, Decapterus maruadsi (Teleostei; Carangidae) across the Central Indo-West Pacific: evidence of strong regional structure and cryptic diversity. Mitochondrial DNA A DNA Mapp Seq Anal 2020; 31:298-310. [PMID: 32744461 DOI: 10.1080/24701394.2020.1799996] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The Japanese scad Decapterus maruadsi (Carangidae) is an economically important marine species in Asia but its exploitation shows signs of overfishing. To document its stock structure, a population genetic and phylogeographic study of several populations of this species from the central part of the Indo-West Pacific region was conducted using the mitochondrial cytochrome b gene. Genetic homogeneity within the Sundaland region's population, including Rosario (the Philippines) and Ranong (Andaman Sea) populations was revealed with low nucleotide diversity (π = 0.001-0.003) but high haplotype diversity (h = 0.503-0.822). In contrast, a clear genetic structure was observed between this group and the northern Vietnam populations as revealed by F ST, AMOVA and SAMOVA, while the central Vietnam population of Khanh Hoa is an admixed group between the two differentiated regional populations. The neutrality and mismatch distribution analyses supported a demographic expansion of D. maruadsi in between last Pleistocene to early Holocene period which influenced present day distribution pattern. Contemporary factors such as oceanic currents and different life history traits are also believed to play significant roles in the observed population structure and biogeographical pattern. Based on these results, recommendations on how stocks of the Japanese scad should be managed are offered.
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Affiliation(s)
- Noorul-Azliana Jamaludin
- Marine Capture Fisheries Division, Fisheries Research Institute, Sitiawan, Malaysia.,Marine Fisheries Resources and Management Department (SEAFDEC/MFRDMD), Southeast Asian Fisheries Development Center, Kuala Terengganu, Malaysia
| | - Wahidah Mohd-Arshaad
- Marine Fisheries Resources and Management Department (SEAFDEC/MFRDMD), Southeast Asian Fisheries Development Center, Kuala Terengganu, Malaysia
| | - Noor Adelyna Mohd Akib
- Centre for Global Sustainability Studies (CGSS), Universiti Sains Malaysia, Penang, Malaysia
| | | | | | - Siti-Azizah Mohd Nor
- Institute of Marine Biotechnology, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
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20
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Righi T, Splendiani A, Fioravanti T, Petetta A, Candelma M, Gioacchini G, Gillespie K, Hanke A, Carnevali O, Caputo Barucchi V. Mediterranean swordfish ( Xiphias gladius Linnaeus, 1758) population structure revealed by microsatellite DNA: genetic diversity masked by population mixing in shared areas. PeerJ 2020; 8:e9518. [PMID: 33194325 PMCID: PMC7394060 DOI: 10.7717/peerj.9518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 06/19/2020] [Indexed: 11/20/2022] Open
Abstract
Background The Mediterranean swordfish stock is overfished and considered not correctly managed. Elucidating the patterns of the Mediterranean swordfish population structure constitutes an essential prerequisite for effective management of this fishery resource. To date, few studies have investigated intra-Mediterranean swordfish population structure, and their conclusions are controversial. Methods A panel of 20 microsatellites DNA was used to investigate fine-scale population structuring of swordfish from six main fishing areas of the Mediterranean Sea. Results This study provides evidence to reject the hypothesis of a single swordfish population within the Mediterranean Sea. DAPC analysis revealed the presence of three genetic clusters and a high level of admixture within the Mediterranean Sea. Genetic structure was supported by significant FST values while mixing was endorsed by the heterozygosity deficit observed in sampling localities indicative of a possible Wahlund effect, by sampling admixture individuals. Overall, our tests reject the hypothesis of a single swordfish population within the Mediterranean Sea. Homing towards the Mediterranean breeding areas may have generated a weak degree of genetic differentiation between populations even at the intra-basin scale.
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Affiliation(s)
- Tommaso Righi
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy
| | - Andrea Splendiani
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy
| | - Tatiana Fioravanti
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy
| | - Andrea Petetta
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy
| | - Michela Candelma
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy
| | - Giorgia Gioacchini
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy
| | - Kyle Gillespie
- Fisheries and Oceans Canada, St. Andrews Biological Station, Ottawa, Canada
| | - Alex Hanke
- Fisheries and Oceans Canada, St. Andrews Biological Station, Ottawa, Canada
| | - Oliana Carnevali
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy
| | - Vincenzo Caputo Barucchi
- Dipartimento di Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Ancona, Italy
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21
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Rooker JR, Wells RJD, Addis P, Arrizabalaga H, Baptista M, Bearzi G, Dance MA, Fraile I, Lacoue-Labarthe T, Lee JM, Megalofonou P, Rosa R, Sobrino I, Sykes AV, Villanueva R. Natural geochemical markers reveal environmental history and population connectivity of common cuttlefish in the Atlantic Ocean and Mediterranean Sea. J R Soc Interface 2020. [PMCID: PMC7423417 DOI: 10.1098/rsif.2020.0309] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Natural markers (δ13C and δ18O stable isotopes) in the cuttlebones of the European common cuttlefish (Sepia officinalis) were determined for individuals collected across a substantial portion of their range in the Northeast Atlantic Ocean (NEAO) and Mediterranean Sea. Cuttlebone δ13C and δ18O were quantified for core and edge material to characterize geochemical signatures associated with early (juvenile) and recent (sub-adult/adult) life-history periods, respectively. Regional shifts in cuttlebone δ13C and δ18O values were detected across the 12 sites investigated. Individuals collected from sites in the NEAO displayed more enriched δ13C and δ18O values relative to sites in the Mediterranean Sea, with the latter also showing salient differences in both markers among western, central and eastern collection areas. Classification success based on cuttlebone δ13C and δ18O values to four geographical regions (NEAO, western, central and eastern Mediterranean Sea) was relatively high, suggesting that environmental conditions in each region were distinct and produced area-specific geochemical signatures on the cuttlebones of S. officinalis. A modified δ13C and δ18O baseline was developed from sites proximal to the Strait of Gibraltar in both the NEAO and Mediterranean Sea to assess potential mixing through this corridor. Nearly, all (95%) of δ13C and δ18O signatures of S. officinalis collected in the area of the NEAO closest to the Strait of Gibraltar (Gulf of Cadiz) matched the signatures of specimens collected in the western Mediterranean, signifying potential movement and mixing of individuals through this passageway. This study extends the current application of these geochemical markers for assessing the natal origin and population connectivity of this species and potentially other taxa that inhabit this geographical area.
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Affiliation(s)
- Jay R. Rooker
- Department of Marine Biology, Texas A&M University, 1001 Texas Clipper Road, Galveston, TX 77553, USA
| | - R. J. David Wells
- Department of Marine Biology, Texas A&M University, 1001 Texas Clipper Road, Galveston, TX 77553, USA
| | - Piero Addis
- Department of Environmental and Life Science, University of Cagliari, Via Fiorelli 1, 09126 Cagliari, Italy
| | - Haritz Arrizabalaga
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Herrera Kaia, Portualdea z/g, 20110 Pasaia – Gipuzkoa, Spain
| | - Miguel Baptista
- MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Avenida Nossa Senhora do Cabo 939, 2750-374 Cascais, Portugal
| | - Giovanni Bearzi
- Dolphin Biology and Conservation, Cordenons, Pordenone, Italy
| | - Michael A. Dance
- Department of Oceanography and Coastal Sciences, Louisiana State University, 2255 Energy, Coast and Environment Building, Baton Rouge, LA 70803, USA
| | - Igaratza Fraile
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Herrera Kaia, Portualdea z/g, 20110 Pasaia – Gipuzkoa, Spain
| | - Thomas Lacoue-Labarthe
- Littoral Environnement et Sociétés (LIENSs) - UMR 7266 Bâtiment ILE, 2, rue Olympe de Gouges, 17000 La Rochelle, France
| | - Jessica M. Lee
- Department of Marine Biology, Texas A&M University, 1001 Texas Clipper Road, Galveston, TX 77553, USA
| | - Persefoni Megalofonou
- Department of Biology, National and Kapodistrian University of Athens,15784 Athens, Greece
| | - Rui Rosa
- MARE - Marine and Environmental Sciences Centre, Laboratório Marítimo da Guia, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Avenida Nossa Senhora do Cabo 939, 2750-374 Cascais, Portugal
| | - Ignacio Sobrino
- Instituto Español de Oceanografía, Puerto Pesquero s/n, 11006, Cádiz, Spain
| | - António V. Sykes
- Center of Marine Sciences, Universidade do Algarve Campus de Gambelas, 8005-139 Faro, Portugal
| | - Roger Villanueva
- Institut de Ciències del Mar (CSIC), Passeig Maritim 37-49, 08003 Barcelona, Spain
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22
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Wells RJD, Mohan JA, Dewar H, Rooker JR, Tanaka Y, Snodgrass OE, Kohin S, Miller NR, Ohshimo S. Natal origin of Pacific bluefin tuna from the California Current Large Marine Ecosystem. Biol Lett 2020; 16:20190878. [PMID: 32019467 PMCID: PMC7058956 DOI: 10.1098/rsbl.2019.0878] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Natal origin of subadult (age-1) Pacific bluefin tuna (PBT, Thunnus orientalis) from the California Current Large Marine Ecosystem (CCLME) was determined using natural tracers in ear stones (otoliths). Age-0 PBT collected from the two known spawning areas in the western Pacific Ocean (East China Sea, Sea of Japan) were used to establish baseline signatures from otolith cores over 4 years (2014-2017) based on a suite of trace elements (Li, Mg, Mn, Sr, Zn and Ba). Distinct chemical signatures existed in the otolith cores of age-0 PBT collected from the two spawning areas, with overall classification accuracy ranging 73-93% by year. Subadult PBT collected in the CCLME over the following 4 years (2015-2018) were then age-class matched to baselines using mixed-stock analysis. Natal origin of trans-Pacific migrants in the CCLME ranged 43-78% from the East China Sea and 22-57% from the Sea of Japan, highlighting the importance of both spawning areas for PBT in the CCLME. This study provides the first estimates on the natal origin of subadult PBT in this ecosystem using otolith chemistry and expands upon the application of these natural tracers for population connectivity studies for this species.
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Affiliation(s)
- R J David Wells
- Department of Marine Biology, Texas A&M University at Galveston, 1001 Texas Clipper Road, Galveston, TX 77553, USA.,Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX 77843, USA
| | - John A Mohan
- Department of Marine Biology, Texas A&M University at Galveston, 1001 Texas Clipper Road, Galveston, TX 77553, USA
| | - Heidi Dewar
- Southwest Fisheries Science Center, National Marine Fisheries Service, 8901 La Jolla Shores Drive, La Jolla, CA 92037, USA
| | - Jay R Rooker
- Department of Marine Biology, Texas A&M University at Galveston, 1001 Texas Clipper Road, Galveston, TX 77553, USA.,Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX 77843, USA
| | - Yosuke Tanaka
- Pacific Bluefin Tuna Biology Group, Bluefin Tuna Resources Division, National Research Institute of Far Seas Fisheries, 5-7-1, Orido, Shimizu, Shizuoka 424-8633, Japan
| | - Owyn E Snodgrass
- Southwest Fisheries Science Center, National Marine Fisheries Service, 8901 La Jolla Shores Drive, La Jolla, CA 92037, USA
| | - Suzanne Kohin
- Southwest Fisheries Science Center, National Marine Fisheries Service, 8901 La Jolla Shores Drive, La Jolla, CA 92037, USA
| | - Nathan R Miller
- Jackson School of Geosciences, The University of Texas at Austin, 2275 Speedway Stop C9000, Austin, TX 78712, USA
| | - Seiji Ohshimo
- Pacific Bluefin Tuna Biology Group, Bluefin Tuna Resources Division, National Research Institute of Far Seas Fisheries, 5-7-1, Orido, Shimizu, Shizuoka 424-8633, Japan.,Fisheries Management and Oceanography Division, Seikai National Fisheries Research Institute, 1551-8 Taira-machi, Nagasaki 851-2213, Japan
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23
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Block BA, Whitlock R, Schallert RJ, Wilson S, Stokesbury MJW, Castleton M, Boustany A. Estimating Natural Mortality of Atlantic Bluefin Tuna Using Acoustic Telemetry. Sci Rep 2019; 9:4918. [PMID: 30894557 DOI: 10.1038/s41598-019-40065-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 02/04/2019] [Indexed: 11/08/2022] Open
Abstract
Atlantic bluefin tuna (Thunnus thynnus) are highly migratory fish with a contemporary range spanning the North Atlantic Ocean. Bluefin tuna populations have undergone severe decline and the status of the fish within each population remains uncertain. Improved biological knowledge, particularly of natural mortality and rates of mixing of the western (GOM) and eastern (Mediterranean) populations, is key to resolving the current status of the Atlantic bluefin tuna. We evaluated the potential for acoustic tags to yield empirical estimates of mortality and migration rates for long-lived, highly migratory species such as Atlantic bluefin tuna. Bluefin tuna tagged in the Gulf of St. Lawrence (GSL) foraging ground (2009-2016) exhibited high detection rates post release, with 91% crossing receiver lines one year post tagging, 61% detected after year two at large, with detections up to ~1700 days post deployment. Acoustic detections per individual fish ranged from 3 to 4759 receptions. A spatially-structured Bayesian mark recapture model was applied to the acoustic detection data for Atlantic bluefin tuna electronically tagged in the GSL to estimate the rate of instantaneous annual natural mortality. We report a median estimate of 0.10 yr-1 for this experiment. Our results demonstrate that acoustic tags can provide vital fisheries independent estimates for life history parameters critical for improving stock assessment models.
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24
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Rooker JR, Dance MA, Wells RJD, Ajemian MJ, Block BA, Castleton MR, Drymon JM, Falterman BJ, Franks JS, Hammerschlag N, Hendon JM, Hoffmayer ER, Kraus RT, McKinney JA, Secor DH, Stunz GW, Walter JF. Population connectivity of pelagic megafauna in the Cuba-Mexico-United States triangle. Sci Rep 2019; 9:1663. [PMID: 30733508 PMCID: PMC6367330 DOI: 10.1038/s41598-018-38144-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 12/12/2018] [Indexed: 11/09/2022] Open
Abstract
The timing and extent of international crossings by billfishes, tunas, and sharks in the Cuba-Mexico-United States (U.S.) triangle was investigated using electronic tagging data from eight species that resulted in >22,000 tracking days. Transnational movements of these highly mobile marine predators were pronounced with varying levels of bi- or tri-national population connectivity displayed by each species. Billfishes and tunas moved throughout the Gulf of Mexico and all species investigated (blue marlin, white marlin, Atlantic bluefin tuna, yellowfin tuna) frequently crossed international boundaries and entered the territorial waters of Cuba and/or Mexico. Certain sharks (tiger shark, scalloped hammerhead) displayed prolonged periods of residency in U.S. waters with more limited displacements, while whale sharks and to a lesser degree shortfin mako moved through multiple jurisdictions. The spatial extent of associated movements was generally associated with their differential use of coastal and open ocean pelagic ecosystems. Species with the majority of daily positions in oceanic waters off the continental shelf showed the greatest tendency for transnational movements and typically traveled farther from initial tagging locations. Several species converged on a common seasonal movement pattern between territorial waters of the U.S. (summer) and Mexico (winter).
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Affiliation(s)
- Jay R Rooker
- Department of Marine Biology, Texas A&M University, 1001 Texas Clipper Road, Galveston, Texas, 77554, USA. .,Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, Texas, 77843, USA.
| | - Michael A Dance
- Department of Oceanography and Coastal Sciences, Louisiana State University, 2255 Energy, Coast and Environment Building, Baton Rouge, Louisiana, 70803, USA
| | - R J David Wells
- Department of Marine Biology, Texas A&M University, 1001 Texas Clipper Road, Galveston, Texas, 77554, USA.,Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, Texas, 77843, USA
| | - Matthew J Ajemian
- Harbor Branch Oceanographic Institute, Florida Atlantic University, 5600 US 1 North, Fort. Pierce, Florida, 34946, USA
| | - Barbara A Block
- Hopkins Marine Station, Stanford University, 120 Ocean View Blvd., Pacific Grove, California, 93950, USA
| | - Michael R Castleton
- Hopkins Marine Station, Stanford University, 120 Ocean View Blvd., Pacific Grove, California, 93950, USA
| | - J Marcus Drymon
- Mississippi State University, Coastal Research and Extension Center, 1815 Popps Ferry Road, Biloxi, Mississippi, 39532, USA
| | - Brett J Falterman
- Louisiana Department of Wildlife and Fisheries, 2021 Lakeshore Dr., Suite 220, New Orleans, Louisiana, 70122, USA
| | - James S Franks
- Gulf Coast Research Laboratory, University of Southern Mississippi, 703 East Beach Drive Ocean Springs, Mississippi, 39564, USA
| | - Neil Hammerschlag
- Rosenstiel School of Marine & Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida, 33149, USA
| | - Jill M Hendon
- Gulf Coast Research Laboratory, University of Southern Mississippi, 703 East Beach Drive Ocean Springs, Mississippi, 39564, USA
| | - Eric R Hoffmayer
- NOAA Fisheries, Southeast Fisheries Science Center, Mississippi Laboratories, P.O. Drawer 1207, Pascagoula, Mississippi, 39568, USA
| | - Richard T Kraus
- Lake Erie Biological Station, USGS, 6100 Columbus Avenue, Sandusky, Ohio, 44870, USA
| | - Jennifer A McKinney
- Louisiana Department of Wildlife and Fisheries, 2021 Lakeshore Dr., Suite 220, New Orleans, Louisiana, 70122, USA
| | - David H Secor
- Chesapeake Biological Laboratory, University of Maryland Center for Environmental Science, P.O. Box 38, Solomons, Maryland, 20688, USA
| | - Gregory W Stunz
- Harte Research Institute for Gulf of Mexico Studies, Texas A&M University-Corpus Christi, 6300 Ocean Drive, Unit 5869, Corpus Christi, Texas, 78412, USA
| | - John F Walter
- NOAA Fisheries, Southeast Fisheries Science Center, 75 Virginia Beach Drive, Miami, Florida, 33149, USA
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25
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Abstract
Diverse marine animals migrate across vast expanses of seemingly featureless ocean before returning as adults to reproduce in the area where they originated. How animals accomplish such feats of natal homing is an enduring mystery. Growing evidence suggests, however, that sea turtles and salmon imprint on the magnetic field of their home area when young and then use this information to return as adults. Both turtles and salmon have the sensory abilities needed to detect the unique 'magnetic signature' of a coastal area. Analyses have revealed that, for both groups of animals, subtle changes in the geomagnetic field of the home region are correlated with changes in natal homing behavior. In turtles, a relationship between population genetic structure and the magnetic fields that exist at nesting beaches has also been detected, consistent with the hypothesis that turtles recognize their natal areas on the basis of magnetic cues. Salmon likely use a biphasic navigational strategy in which magnetic cues guide fish through the open sea and into the proximity of the home river where chemical cues allow completion of the spawning migration. Similarly, turtles may also exploit local cues to help pinpoint nesting areas once they have arrived in the vicinity. Throughout most of the natal homing migration, however, magnetic navigation appears to be the primary mode of long-distance guidance in both sea turtles and salmon.
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Affiliation(s)
- Kenneth J Lohmann
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
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26
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Pecoraro C, Babbucci M, Franch R, Rico C, Papetti C, Chassot E, Bodin N, Cariani A, Bargelloni L, Tinti F. The population genomics of yellowfin tuna (Thunnus albacares) at global geographic scale challenges current stock delineation. Sci Rep 2018; 8:13890. [PMID: 30224658 PMCID: PMC6141456 DOI: 10.1038/s41598-018-32331-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 08/31/2018] [Indexed: 12/03/2022] Open
Abstract
Yellowfin tuna, Thunnus albacares, is one of the most important seafood commodities in the world. Despite its great biological and economic importance, conflicting evidence arises from classical genetic and tagging studies concerning the yellowfin tuna population structure at local and global oceanic scales. Access to more powerful and cost effective genetic tools would represent the first step towards resolving the population structure of yellowfin tuna across its distribution range. Using a panel of 939 neutral Single Nucleotide Polymorphisms (SNPs), and the most comprehensive data set of yellowfin samples available so far, we found genetic differentiation among the Atlantic, Indian and Pacific oceans. The genetic stock structure analysis carried out with 33 outlier SNPs, putatively under selection, identified discrete populations within the Pacific Ocean and, for the first time, also within the Atlantic Ocean. Stock assessment approaches that consider genetic differences at neutral and adaptive genomic loci should be routinely implemented to check the status of the yellowfin tuna, prevent illegal trade, and develop more sustainable management measures.
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Affiliation(s)
- Carlo Pecoraro
- Department Biological, Geological and Environmental Sciences (BIGEA), University of Bologna, Via Selmi 3, 40126, Bologna, Italy. .,Institut de Recherche pour le Développement (IRD), UMR MARBEC (IRD/Ifremer/UM2/CNRS) SFA, Fishing Port, BP570, Victoria, Seychelles. .,Berlin Center for Genomics in Biodiversity Research (BeGenDiv), Berlin, Germany.
| | - Massimiliano Babbucci
- Comparative Biomedicine and Food Science, University of Padova, viale dell'Università 16, 35020, Legnaro, PD, Italy
| | - Rafaella Franch
- Comparative Biomedicine and Food Science, University of Padova, viale dell'Università 16, 35020, Legnaro, PD, Italy
| | - Ciro Rico
- School of Marine Studies, Molecular Analytics Laboratory (MOANA-LAB), Faculty of Science Technology and Environment, The University of the South Pacific, Laucala Campus, Suva, Fiji.,Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas (EBD, CSIC), c/Américo Vespucio s/n, Sevilla, 41092, Spain
| | - Chiara Papetti
- Department of Biology, University of Padova, 35121, Padova, Italy
| | - Emmanuel Chassot
- Institut de Recherche pour le Développement (IRD), UMR MARBEC (IRD/Ifremer/UM2/CNRS) SFA, Fishing Port, BP570, Victoria, Seychelles
| | - Nathalie Bodin
- Institut de Recherche pour le Développement (IRD), UMR MARBEC (IRD/Ifremer/UM2/CNRS) SFA, Fishing Port, BP570, Victoria, Seychelles
| | - Alessia Cariani
- Department Biological, Geological and Environmental Sciences (BIGEA), University of Bologna, Via Selmi 3, 40126, Bologna, Italy
| | - Luca Bargelloni
- Comparative Biomedicine and Food Science, University of Padova, viale dell'Università 16, 35020, Legnaro, PD, Italy
| | - Fausto Tinti
- Department Biological, Geological and Environmental Sciences (BIGEA), University of Bologna, Via Selmi 3, 40126, Bologna, Italy
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27
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García-Vernet R, Sant P, Víkingsson G, Borrell A, Aguilar A. Are stable isotope ratios and oscillations consistent in all baleen plates along the filtering apparatus? Validation of an increasingly used methodology. Rapid Commun Mass Spectrom 2018; 32:1257-1262. [PMID: 29777557 DOI: 10.1002/rcm.8169] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 05/09/2018] [Accepted: 05/09/2018] [Indexed: 06/08/2023]
Abstract
RATIONALE Baleen plates are anatomical structures composed of inert tissue that hang from the upper jaw in mysticetes. Baleen plates may differ in size and in coloration between different segments of the filtering row or between sides of the mouth. Concern has been raised that variation in baleen plate characteristics may reflect dissimilar structural composition and growth rates liable to affect stable isotope ratios and their oscillation patterns. METHODS We measured stable carbon (δ13 C values) and nitrogen (δ15 N values) isotope ratios at intervals of 1 cm along the longitudinal axis of six baleen plates collected from different positions along the mouth of a fin whale. All samples were analysed using a continuous flow isotope ratio mass spectrometer. Generalized additive models were fitted to the data from each baleen plate and the results of the models were compared visually. RESULTS A total of 206 samples were analysed. Visually, all baleen plates presented nearly identical oscillations, independent of the position or the coloration of the baleen plate. However, the variation in δ13 C and δ15 N values occurring between the different baleen plates was higher in the segments of oscillations exhibiting steeper slopes. CONCLUSIONS Differences in size between plates in an individual are due to differential erosion rates according to their position in the mouth. Therefore, the position of sampling along the baleen plate row should not be a reason for concern when conducting stable isotope studies.
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Affiliation(s)
- Raquel García-Vernet
- Institute of Biodiversity Research (IRBio) and Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain
| | - Pol Sant
- Institute of Biodiversity Research (IRBio) and Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain
| | - Gísli Víkingsson
- Marine and Freshwater Research Institute, PO Box 1390, Skúlagata 4, 121, Reykjavík, Iceland
| | - Asunción Borrell
- Institute of Biodiversity Research (IRBio) and Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain
| | - Alex Aguilar
- Institute of Biodiversity Research (IRBio) and Department of Evolutionary Biology, Ecology and Environmental Sciences, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain
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28
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Reis-Santos P, Tanner SE, Aboim MA, Vasconcelos RP, Laroche J, Charrier G, Pérez M, Presa P, Gillanders BM, Cabral HN. Reconciling differences in natural tags to infer demographic and genetic connectivity in marine fish populations. Sci Rep 2018; 8:10343. [PMID: 29985467 DOI: 10.1038/s41598-018-28701-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 06/22/2018] [Indexed: 11/08/2022] Open
Abstract
Processes regulating population connectivity are complex, ranging from extrinsic environmental factors to intrinsic individual based features, and are a major force shaping the persistence of fish species and population responses to harvesting and environmental change. Here we developed an integrated assessment of demographic and genetic connectivity of European flounder Platichthys flesus in the northeast Atlantic (from the Norwegian to the Portuguese coast) and Baltic Sea. Specifically, we used a Bayesian infinite mixture model to infer the most likely number of natal sources of individuals based on otolith near core chemical composition. Simultaneously, we characterised genetic connectivity via microsatellite DNA markers, and evaluated how the combined use of natural tags informed individual movement and long-term population exchange rates. Individual markers provided different insights on movement, with otolith chemistry delineating Norwegian and Baltic Sea sources, whilst genetic markers showed a latitudinal pattern which distinguished southern peripheral populations along the Iberian coast. Overall, the integrated use of natural tags resulted in outcomes that were not readily anticipated by individual movement or gene flow markers alone. Our ecological and evolutionary approach provided a synergistic view on connectivity, which will be paramount to align biological and management units and safeguard species' biocomplexity.
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29
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Rooker JR, Dance MA, Wells RJD, Quigg A, Hill RL, Appeldoorn RS, Padovani Ferreira B, Boswell KM, Sanchez PJ, Moulton DL, Kitchens LL, Rooker GJ, Aschenbrenner A. Seascape connectivity and the influence of predation risk on the movement of fishes inhabiting a back‐reef ecosystem. Ecosphere 2018. [DOI: 10.1002/ecs2.2200] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Jay R. Rooker
- Department of Marine Biology Texas A&M University (Galveston Campus) 1001 Texas Clipper Road Galveston Texas 77554 USA
- Department of Wildlife and Fisheries Sciences Texas A&M University College Station Texas 77843 USA
| | - Michael A. Dance
- Department of Marine Biology Texas A&M University (Galveston Campus) 1001 Texas Clipper Road Galveston Texas 77554 USA
- Department of Wildlife and Fisheries Sciences Texas A&M University College Station Texas 77843 USA
| | - R. J. David Wells
- Department of Marine Biology Texas A&M University (Galveston Campus) 1001 Texas Clipper Road Galveston Texas 77554 USA
- Department of Wildlife and Fisheries Sciences Texas A&M University College Station Texas 77843 USA
| | - Antonietta Quigg
- Department of Marine Biology Texas A&M University (Galveston Campus) 1001 Texas Clipper Road Galveston Texas 77554 USA
- Department of Oceanography Texas A&M University College Station Texas 77843 USA
| | - Ronald L. Hill
- NOAA/NMFS/Southeast Fisheries Science Center 4700 Avenue U Galveston Texas 77551 USA
| | | | - Beatrice Padovani Ferreira
- Departamento de Oceanografia Universidade Federal de Pernambuco Avenida da Arquitetura, s/n, Cidade Universitária 50740‐550 Recife Brazil
| | - Kevin M. Boswell
- Department of Biological Sciences Marine Sciences Program Florida International University North Miami Florida 33181 USA
| | - Phillip J. Sanchez
- Department of Marine Biology Texas A&M University (Galveston Campus) 1001 Texas Clipper Road Galveston Texas 77554 USA
- Department of Marine Sciences University of Puerto Rico Mayaguez 00681 Puerto Rico
| | - David L. Moulton
- Department of Marine Biology Texas A&M University (Galveston Campus) 1001 Texas Clipper Road Galveston Texas 77554 USA
- Department of Wildlife and Fisheries Sciences Texas A&M University College Station Texas 77843 USA
| | - Larissa L. Kitchens
- Department of Marine Biology Texas A&M University (Galveston Campus) 1001 Texas Clipper Road Galveston Texas 77554 USA
- Department of Wildlife and Fisheries Sciences Texas A&M University College Station Texas 77843 USA
| | - Garrett J. Rooker
- Department of Marine Biology Texas A&M University (Galveston Campus) 1001 Texas Clipper Road Galveston Texas 77554 USA
| | - Alexandre Aschenbrenner
- Departamento de Oceanografia Universidade Federal de Pernambuco Avenida da Arquitetura, s/n, Cidade Universitária 50740‐550 Recife Brazil
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30
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Brothers JR, Lohmann KJ. Evidence that Magnetic Navigation and Geomagnetic Imprinting Shape Spatial Genetic Variation in Sea Turtles. Curr Biol 2018; 28:1325-1329.e2. [DOI: 10.1016/j.cub.2018.03.022] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 02/12/2018] [Accepted: 03/12/2018] [Indexed: 10/17/2022]
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31
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Puncher GN, Cariani A, Maes GE, Van Houdt J, Herten K, Cannas R, Rodriguez-Ezpeleta N, Albaina A, Estonba A, Lutcavage M, Hanke A, Rooker J, Franks JS, Quattro JM, Basilone G, Fraile I, Laconcha U, Goñi N, Kimoto A, Macías D, Alemany F, Deguara S, Zgozi SW, Garibaldi F, Oray IK, Karakulak FS, Abid N, Santos MN, Addis P, Arrizabalaga H, Tinti F. Spatial dynamics and mixing of bluefin tuna in the Atlantic Ocean and Mediterranean Sea revealed using next-generation sequencing. Mol Ecol Resour 2018; 18:620-638. [PMID: 29405659 DOI: 10.1111/1755-0998.12764] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 01/06/2018] [Accepted: 01/19/2018] [Indexed: 01/05/2023]
Abstract
The Atlantic bluefin tuna is a highly migratory species emblematic of the challenges associated with shared fisheries management. In an effort to resolve the species' stock dynamics, a genomewide search for spatially informative single nucleotide polymorphisms (SNPs) was undertaken, by way of sequencing reduced representation libraries. An allele frequency approach to SNP discovery was used, combining the data of 555 larvae and young-of-the-year (LYOY) into pools representing major geographical areas and mapping against a newly assembled genomic reference. From a set of 184,895 candidate loci, 384 were selected for validation using 167 LYOY. A highly discriminatory genotyping panel of 95 SNPs was ultimately developed by selecting loci with the most pronounced differences between western Atlantic and Mediterranean Sea LYOY. The panel was evaluated by genotyping a different set of LYOY (n = 326), and from these, 77.8% and 82.1% were correctly assigned to western Atlantic and Mediterranean Sea origins, respectively. The panel revealed temporally persistent differentiation among LYOY from the western Atlantic and Mediterranean Sea (FST = 0.008, p = .034). The composition of six mixed feeding aggregations in the Atlantic Ocean and Mediterranean Sea was characterized using genotypes from medium (n = 184) and large (n = 48) adults, applying population assignment and mixture analyses. The results provide evidence of persistent population structuring across broad geographic areas and extensive mixing in the Atlantic Ocean, particularly in the mid-Atlantic Bight and Gulf of St. Lawrence. The genomic reference and genotyping tools presented here constitute novel resources useful for future research and conservation efforts.
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Affiliation(s)
- Gregory N Puncher
- Department of Biological, Geological and Environmental Sciences/Laboratory of Genetics and Genomics of Marine Resources and Environment (GenoDREAM), University of Bologna, Ravenna, Italy.,Department of Biology, Marine Biology Research Group, Ghent University, Ghent, Belgium.,Department of Biology, University of New Brunswick, Saint John, NB, Canada
| | - Alessia Cariani
- Department of Biological, Geological and Environmental Sciences/Laboratory of Genetics and Genomics of Marine Resources and Environment (GenoDREAM), University of Bologna, Ravenna, Italy
| | - Gregory E Maes
- Centre for Sustainable Tropical Fisheries and Aquaculture, Comparative Genomics Centre, College of Science and Engineering, James Cook University, Townsville, Qld, Australia.,Centre for Human Genetics, Genomics Core, KU Leuven - UZ Leuven, Leuven, Belgium.,Laboratory of Biodiversity and Evolutionary Genomics, University of Leuven (KU Leuven), Leuven, Belgium
| | - Jeroen Van Houdt
- Centre for Human Genetics, Genomics Core, KU Leuven - UZ Leuven, Leuven, Belgium
| | - Koen Herten
- Centre for Human Genetics, Genomics Core, KU Leuven - UZ Leuven, Leuven, Belgium.,Laboratory of Biodiversity and Evolutionary Genomics, University of Leuven (KU Leuven), Leuven, Belgium
| | - Rita Cannas
- Department of Life & Environmental Sciences (DISVA), University of Cagliari, Cagliari, Italy
| | | | - Aitor Albaina
- Laboratory of Genetics Faculty of Science & Technology, Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU), Leioa, Spain.,Environmental Studies Centre (CEA), Vitoria-Gasteiz City Council, Vitoria-Gasteiz, Spain
| | - Andone Estonba
- Laboratory of Genetics Faculty of Science & Technology, Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Molly Lutcavage
- School for the Environment and Large Pelagics Research Center, University of Massachusetts, Boston, Gloucester, MA, USA
| | - Alex Hanke
- Fisheries and Oceans Canada, St. Andrews Biological Station, St. Andrews, NB, Canada
| | - Jay Rooker
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, TX, USA.,Department of Wildlife and Fisheries Sciences, Texas A&M University, College Station, TX, USA
| | - James S Franks
- Gulf Coast Research Laboratory, Center for Fisheries Research and Development, University of Southern Mississippi, Ocean Springs, MS, USA
| | - Joseph M Quattro
- Department of Biological Sciences, University of South Carolina, Columbia, SC, USA
| | - Gualtiero Basilone
- National Research Council, Institute for Marine and Coastal Environment, Detached Unit of Capo Granitola, Trapani, Italy
| | - Igaratza Fraile
- Marine Research Division, AZTI Tecnalia, Pasaia, Gipuzkoa, Spain
| | - Urtzi Laconcha
- Marine Research Division, AZTI Tecnalia, Pasaia, Gipuzkoa, Spain.,Laboratory of Genetics Faculty of Science & Technology, Department of Genetics, Physical Anthropology and Animal Physiology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Nicolas Goñi
- Marine Research Division, AZTI Tecnalia, Pasaia, Gipuzkoa, Spain
| | - Ai Kimoto
- National Research Institute of Far Seas Fisheries, Shizuoka, Japan
| | - David Macías
- Instituto Español de Oceanografía, Centro Oceanográfico de Baleares, Palma, Spain
| | - Francisco Alemany
- Instituto Español de Oceanografía, Centro Oceanográfico de Baleares, Palma, Spain
| | - Simeon Deguara
- Federation of Maltese Aquaculture Producers (FMAP), Valletta, Malta
| | - Salem W Zgozi
- Marine Biology Research Center, Tripoli-Tajura, Libya
| | - Fulvio Garibaldi
- Department of Earth, Environmental and Life Sciences, University of Genoa, Genova, Italy
| | - Isik K Oray
- Faculty of Fisheries, Istanbul University, Laleli-Istanbul, Turkey
| | | | - Noureddine Abid
- National Institute of Fisheries Research, Regional Centre of Tangier, Tanger, Morocco
| | | | - Piero Addis
- Department of Life & Environmental Sciences (DISVA), University of Cagliari, Cagliari, Italy
| | | | - Fausto Tinti
- Department of Biological, Geological and Environmental Sciences/Laboratory of Genetics and Genomics of Marine Resources and Environment (GenoDREAM), University of Bologna, Ravenna, Italy
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Chambers MS, Sidhu LA, O'Neill B, Sibanda N. Evidence of separate subgroups of juvenile southern bluefin tuna. Ecol Evol 2017; 7:9818-9844. [PMID: 29188011 PMCID: PMC5696402 DOI: 10.1002/ece3.3500] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 08/12/2017] [Accepted: 09/01/2017] [Indexed: 11/06/2022] Open
Abstract
Archival tagging studies of southern bluefin tuna (SBT , Thunnus maccoyii) have revealed that juveniles residing in the Great Australian Bight (GAB) over the austral summer undertake seasonal cyclic migrations to the southeast Indian Ocean and the Tasman Sea during winter. However, there remains disagreement about the extent of mixing between juvenile SBT regularly caught by longline fleets south of Africa and those observed in the GAB. Some researchers have argued that archival tag recoveries indicate most juveniles reside in the GAB over the austral summer. Others have suggested that recoveries of conventional and archival tags are better explained by a juvenile population consisting of separate groups on the eastern and western sides of the Indian Ocean with limited intermixing. We present analyses of catch and tag recovery data and re-examine archival tagging studies. The evidence provided strongly favors the hypothesis of separate juvenile subgroups, or contingents, with limited intermixing. We draw some tentative conclusions about the nature of the putative contingents and discuss some implications of these findings for the interpretation of existing datasets and future research priorities. We also provide the first evidence that the migration choices of juveniles that summer in the GAB are influenced by fidelity to winter feeding grounds and suggest this helps explain the collapse of the surface fishery off New South Wales in the 1980s.
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Affiliation(s)
- Mark S Chambers
- School of Physical, Environmental and Mathematical Sciences University of New South Wales (Canberra) at the Australian Defence Force Academy Canberra BC Australia
| | - Leesa A Sidhu
- School of Physical, Environmental and Mathematical Sciences University of New South Wales (Canberra) at the Australian Defence Force Academy Canberra BC Australia
| | - Ben O'Neill
- School of Physical, Environmental and Mathematical Sciences University of New South Wales (Canberra) at the Australian Defence Force Academy Canberra BC Australia
| | - Nokuthaba Sibanda
- School of Mathematics and Statistics Victoria University of Wellington Wellington New Zealand
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33
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Carlson AK, Phelps QE, Graeb BDS. Chemistry to conservation: using otoliths to advance recreational and commercial fisheries management. J Fish Biol 2017; 90:505-527. [PMID: 27704556 DOI: 10.1111/jfb.13155] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 08/15/2016] [Indexed: 06/06/2023]
Abstract
Otolith chemistry is an effective technique for evaluating fish environmental history, but its utility in fisheries management has not been comprehensively examined. Thus, a review of otolith chemistry with emphasis on management applicability is presented. More than 1500 otolith chemistry manuscripts published from 1967 to 2015 are reviewed and descriptive case studies are used to illustrate the utility of otolith chemistry as a fisheries management tool. Otolith chemistry publications span a wide variety of topics (e.g. natal origins, habitat use, movement, stock discrimination and statistical theory) and species in freshwater and marine systems. Despite the broad distribution of manuscripts in a variety of fisheries, environmental and ecological journals, the majority of publications (83%, n = 1264) do not describe implications or applications of otolith chemistry for fisheries management. This information gap is addressed through case studies that illustrate management applications of otolith chemistry. Case studies cover numerous topics (e.g. natal origins, population connectivity, stock enhancement, transgenerational marking, pollution exposure history and invasive species management) in freshwater and marine systems using sport fishes, invasive fishes, endangered fishes and species of commercial and aquaculture importance. Otolith chemistry has diverse implications and applications for fisheries management worldwide. Collaboration among fisheries professionals from academia, government agencies and non-governmental organizations will help bridge the research-management divide and establish otolith chemistry as a fisheries management tool.
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Affiliation(s)
- A K Carlson
- Department of Natural Resource Management, South Dakota State University, Northern Plains Biostress Laboratory 138, Box 2140B, Brookings, SD, 57007, U.S.A
| | - Q E Phelps
- Big Rivers and Wetlands Field Station, Missouri Department of Conservation, 3815 East Jackson Boulevard, Jackson, MO, 63755, U.S.A
| | - B D S Graeb
- Department of Natural Resource Management, South Dakota State University, Northern Plains Biostress Laboratory 138, Box 2140B, Brookings, SD, 57007, U.S.A
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34
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Hazen EL, Carlisle AB, Wilson SG, Ganong JE, Castleton MR, Schallert RJ, Stokesbury MJ, Bograd SJ, Block BA. Quantifying overlap between the Deepwater Horizon oil spill and predicted bluefin tuna spawning habitat in the Gulf of Mexico. Sci Rep 2016; 6:33824. [PMID: 27654709 DOI: 10.1038/srep33824] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 09/02/2016] [Indexed: 01/26/2023] Open
Abstract
Atlantic bluefin tuna (Thunnus thynnus) are distributed throughout the North Atlantic and are both economically valuable and heavily exploited. The fishery is currently managed as two spawning populations, with the GOM population being severely depleted for over 20 years. In April-August of 2010, the Deepwater Horizon oil spill released approximately 4 million barrels of oil into the GOM, with severe ecosystem and economic impacts. Acute oil exposure results in mortality of bluefin eggs and larvae, while chronic effects on spawning adults are less well understood. Here we used 16 years of electronic tagging data for 66 bluefin tuna to identify spawning events, to quantify habitat preferences, and to predict habitat use and oil exposure within Gulf of Mexico spawning grounds. More than 54,000 km2 (5%) of predicted spawning habitat within the US EEZ was oiled during the week of peak oil dispersal, with potentially lethal effects on eggs and larvae. Although the oil spill overlapped with a relatively small portion of predicted spawning habitat, the cumulative impact from oil, ocean warming and bycatch mortality on GOM spawning grounds may result in significant effects for a population that shows little evidence of rebuilding.
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35
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36
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Aschenbrenner A, Ferreira BP, Rooker JR. Spatial and temporal variability in the otolith chemistry of the Brazilian snapper Lutjanus alexandrei from estuarine and coastal environments. J Fish Biol 2016; 89:753-769. [PMID: 27255666 DOI: 10.1111/jfb.13003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 03/30/2016] [Indexed: 06/05/2023]
Abstract
Otolith chemistry of juvenile and adult individuals of the Brazilian snapper Lutjanus alexandrei was measured to assess the utility of natural markers for investigating individual movements. Individuals were collected over a 3-year period (2010-2012) along the north-eastern coast of Brazil from both estuarine (juvenile to sub-adult stages) and coastal (sub-adult to adult stages) areas. Six elements ((7) Li, (24) Mg, (55) Mn, (59) Co, (88) Sr and (137) Ba) were measured in sectioned otoliths of L. alexandrei using laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS). Edge composition analysis indicated that element:Ca ratios in the otoliths of juvenile and sub-adult L. alexandrei from estuaries were not significantly different among the three consecutive years (2010, 2011 and 2012), suggesting that physicochemical conditions within the nursery area investigated were temporally stable. Similarly, apart from two elements (Ba and Co), element:Ca ratios for larger L. alexandrei inhabiting coastal waters were also similar. In contrast, otolith chemistry of similar sized L. alexandrei from estuarine and coastal areas was significantly different (based on recently accreted material). Otolith Mn:Ca and Ba:Ca were both significantly higher for L. alexandrei collected in estuaries compared to fish from adjacent coastal reefs, while the opposite trend was observed for Sr:Ca. Given the pronounced differences in otolith chemistry between estuarine and coastal areas, element:Ca transects were constructed from the core to margin of the otoliths for adults (age 7+ years) collected on reefs to determine the timing of movement (ontogenetic migration) from estuarine to coastal areas. Based on observed patterns of decline for both Mn:Ca and Ba:Ca, it appears that L. alexandrei begin the move to more coastal habitats (i.e. lower element:Ca ratios) after age 2 years. The patterns observed for this species highlight the importance of conserving connectivity between coastal habitats to maintain sustainable fish stocks exploited by artisanal fisheries.
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Affiliation(s)
- A Aschenbrenner
- Universidade Federal de Pernambuco, Departamento de Oceanografia, Recife, 50740-550, Brazil
| | - B P Ferreira
- Universidade Federal de Pernambuco, Departamento de Oceanografia, Recife, 50740-550, Brazil
| | - J R Rooker
- Department of Marine Biology, Texas A&M University, Texas Clipper Road, Galveston, TX, 77554, U.S.A
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37
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Duponchelle F, Pouilly M, Pécheyran C, Hauser M, Renno JF, Panfili J, Darnaude AM, García-Vasquez A, Carvajal-Vallejos F, García-Dávila C, Doria C, Bérail S, Donard A, Sondag F, Santos RV, Nuñez J, Point D, Labonne M, Baras E. Trans-Amazonian natal homing in giant catfish. J Appl Ecol 2016. [DOI: 10.1111/1365-2664.12665] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fabrice Duponchelle
- Institut de Recherche pour le Développement (IRD); Unité Mixte de Recherche Biologie des Organismes et Ecosystèmes Aquatiques (UMR BOREA - MNHN, CNRS-7208, UPMC, UCBN, IRD-207); 911 Avenue Agropolis 34394 Montpellier France
- LMI-EDIA (Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne); IRD-IIAP; Carretera Iquitos-Nauta; km 4·5 Quistococha distrito de San Juan Bautista Maynas Loreto Perú
| | - Marc Pouilly
- Institut de Recherche pour le Développement (IRD); Unité Mixte de Recherche Biologie des Organismes et Ecosystèmes Aquatiques (UMR BOREA - MNHN, CNRS-7208, UPMC, UCBN, IRD-207); 911 Avenue Agropolis 34394 Montpellier France
- LMI-EDIA (Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne); IRD-IIAP; Carretera Iquitos-Nauta; km 4·5 Quistococha distrito de San Juan Bautista Maynas Loreto Perú
| | - Christophe Pécheyran
- Laboratoire de Chimie Analytique Bio-inorganique et Environnement; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux; CNRS UMR 5254; Université de Pau et des Pays de l'Adour; 2 avenue du Président Angot 64053 Pau France
| | - Marilia Hauser
- Laboratório de Ictiologia e Pesca; Departamento de Biologia; Universidade Federal de Rondônia; 9·5 Km - BR-364 78900-060 Porto Velho RO Brasil
- Programa de Pós-graduação da Rede de Biodiversidade e Biotecnologia da Amazônia Legal; Av. Gal. Rodrigo Otavio Jordão Ramos n° 3000-69·077-00 Manaus AM Brasil
| | - Jean-François Renno
- Institut de Recherche pour le Développement (IRD); Unité Mixte de Recherche Biologie des Organismes et Ecosystèmes Aquatiques (UMR BOREA - MNHN, CNRS-7208, UPMC, UCBN, IRD-207); 911 Avenue Agropolis 34394 Montpellier France
- LMI-EDIA (Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne); IRD-IIAP; Carretera Iquitos-Nauta; km 4·5 Quistococha distrito de San Juan Bautista Maynas Loreto Perú
| | - Jacques Panfili
- IRD; UMR 248 MARBEC (MARine Biodiversity, Exploitation and Conservation); Université Montpellier - cc 093; Place Eugène Bataillon 34095 Montpellier France
| | - Audrey M. Darnaude
- Centre National de la Recherche Scientifique (CNRS); UMR 248 MARBEC; Université Montpellier - cc 093; Place Eugène Bataillon 34095 Montpellier France
| | - Aurea García-Vasquez
- LMI-EDIA (Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne); IRD-IIAP; Carretera Iquitos-Nauta; km 4·5 Quistococha distrito de San Juan Bautista Maynas Loreto Perú
- Instituto de Investigaciones de la Amazonia Peruana (IIAP); Carretera Iquitos-Nauta; km 4·5 Quistococha distrito de San Juan Bautista Maynas Loreto Perú
| | - Fernando Carvajal-Vallejos
- LMI-EDIA (Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne); IRD-IIAP; Carretera Iquitos-Nauta; km 4·5 Quistococha distrito de San Juan Bautista Maynas Loreto Perú
- Unidad de Limnologia y Recursos Acuaticos (ULRA); Universidad Mayor de San Simón (UMSS); calle Sucre y parque la Torre CP 2352 Cochabamba Bolivia
- FAUNAGUA NGO; Calle Innominada s/n Zona Arocagua Norte Cochabamba Sacaba Bolivia
| | - Carmen García-Dávila
- LMI-EDIA (Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne); IRD-IIAP; Carretera Iquitos-Nauta; km 4·5 Quistococha distrito de San Juan Bautista Maynas Loreto Perú
- Instituto de Investigaciones de la Amazonia Peruana (IIAP); Carretera Iquitos-Nauta; km 4·5 Quistococha distrito de San Juan Bautista Maynas Loreto Perú
| | - Carolina Doria
- Laboratório de Ictiologia e Pesca; Departamento de Biologia; Universidade Federal de Rondônia; 9·5 Km - BR-364 78900-060 Porto Velho RO Brasil
| | - Sylvain Bérail
- Laboratoire de Chimie Analytique Bio-inorganique et Environnement; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux; CNRS UMR 5254; Université de Pau et des Pays de l'Adour; 2 avenue du Président Angot 64053 Pau France
| | - Ariane Donard
- Laboratoire de Chimie Analytique Bio-inorganique et Environnement; Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux; CNRS UMR 5254; Université de Pau et des Pays de l'Adour; 2 avenue du Président Angot 64053 Pau France
| | - Francis Sondag
- IRD; SO-HYBAm (Observation Service “Geodynamical, Hydrological and Biogeochemical Control of Erosion/Alteration and Material Transport in the Amazon) & UMR 234 GET (Géosciences Environnement Toulouse); 14 Avenue Edouard Belin 31400 Toulouse France
| | - Roberto V. Santos
- LaboratórioGeochronos; Instituto de Geociências; Universidade de Brasília; 70910-900 Brasília DF Brasil
| | - Jesus Nuñez
- Institut de Recherche pour le Développement (IRD); Unité Mixte de Recherche Biologie des Organismes et Ecosystèmes Aquatiques (UMR BOREA - MNHN, CNRS-7208, UPMC, UCBN, IRD-207); 911 Avenue Agropolis 34394 Montpellier France
- LMI-EDIA (Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne); IRD-IIAP; Carretera Iquitos-Nauta; km 4·5 Quistococha distrito de San Juan Bautista Maynas Loreto Perú
| | - David Point
- LMI-EDIA (Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne); IRD-IIAP; Carretera Iquitos-Nauta; km 4·5 Quistococha distrito de San Juan Bautista Maynas Loreto Perú
- IRD; SO-HYBAm (Observation Service “Geodynamical, Hydrological and Biogeochemical Control of Erosion/Alteration and Material Transport in the Amazon) & UMR 234 GET (Géosciences Environnement Toulouse); 14 Avenue Edouard Belin 31400 Toulouse France
| | - Maylis Labonne
- IRD; UMR 248 MARBEC (MARine Biodiversity, Exploitation and Conservation); Université Montpellier - cc 093; Place Eugène Bataillon 34095 Montpellier France
| | - Etienne Baras
- IRD; UMR 226 ISE-M (Institut des Sciences de l’Évolution); Université de Montpellier; Place Eugène Bataillon, Cc 065 34095 Montpellier France
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Deshpande AD, Dickhut RM, Dockum BW, Brill RW, Farrington C. Polychlorinated biphenyls and organochlorine pesticides as intrinsic tracer tags of foraging grounds of bluefin tuna in the northwest Atlantic Ocean. Mar Pollut Bull 2016; 105:265-76. [PMID: 26895594 DOI: 10.1016/j.marpolbul.2016.02.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 02/02/2016] [Accepted: 02/04/2016] [Indexed: 05/12/2023]
Abstract
Researchers have utilized chemical fingerprints in the determination of habitat utilization and movements of the aquatic animals. In the present effort, we analyzed polychlorinated biphenyl (PCB) congeners and organochlorine pesticides in the samples of juvenile bluefin tuna caught offshore of Virginia, and in larger bluefin tuna from the Gulf of Maine and near Nova Scotia. For a given specimen, or a given location, PCB concentrations were highest, followed by DDTs, and chlordanes. Average contaminant concentrations from fish captured from the three locations were not significantly different; and PCBs, DDTs, and chlordanes correlated well with each other. Trans-nonachlor/PCB 153 ratios in bluefin tuna of eastern Atlantic (i.e., Mediterranean) origin are low compared to the corresponding ratios in fish in the western Atlantic. As the former migrate to the western Atlantic, these ratios gradually turnover due to the accumulation of biomass from forage contaminated with higher trans-nonachlor/PCB 153 ratio reflecting dissimilar use of chlordane pesticides on two sides of the Atlantic Ocean. The trans-nonachlor/PCB 153 ratio indicated that one juvenile bluefin tuna from offshore of Virginia and one large bluefin tuna from Gulf of Maine in the present study originated from foraging grounds in the Mediterranean Sea, and that they have made the trans-Atlantic migrations. The remaining individuals were determined to be either spawned in the Gulf of Mexico or the trans-nonachlor/PCB 153 ratio for the putative Mediterranean bluefin tuna was completely turned over to resemble the ratio characteristic to the western Atlantic. Based on the turnover time for trans-nonachlor/PCB 153 ratio previously determined, the residence time of juvenile bluefin tuna offshore Virginia was estimated to be at least 0.8 to 1.6years. A discriminant function analysis (DFA) plot of total PCB normalized signatures of PCB congeners showed three separate clusters, which suggested that bluefin tuna from offshore Virginia, Gulf of Maine, and Nova Scotia could have had extended residences and foraging within the areas of capture to be able to sustain the stable signatures of PCB congeners. The DFA cluster results supported the concept of metapopulation theory of spatial ecology comprising discrete aggregates of local populations of bluefin tuna where the desired prey species are likely to be abundant. Despite their highly migratory trait and endothermic advantage of foraging in broader and colder habitats, the movements and mixing across the aggregation ranges related to feeding did not appear to be extensive. Advancement in the understanding of bluefin tuna population dynamics beyond the coarse concept of trans-Atlantic migrations to the metapopulation hypothesis provides a novel exploratory tool in the stock assessment and resource management. As the chemical tracer tags are fortified naturally and document the time- and space-integrated foraging history, they promise to serve as the low-cost alternatives to the high-cost electronic data recording tags employed for addressing the migratory movements of bluefin tuna. Between the different potential chemical tracer tags, a distinct advantage of PCB/pesticide analysis over the otolith micro-constituent analysis is that the muscle tissue of a given individual bluefin tuna can be sampled repeatedly for PCB/pesticide analysis over different spatial and temporal scales in a non-lethal manner.
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Affiliation(s)
- Ashok D Deshpande
- NOAA Fisheries, Northeast Fisheries Science Center, James J. Howard Marine Sciences Laboratory, Sandy Hook, NJ, United States.
| | - Rebecca M Dickhut
- Virginia Institute of Marine Science, Gloucester Point, VA, United States
| | - Bruce W Dockum
- NOAA Fisheries, Northeast Fisheries Science Center, James J. Howard Marine Sciences Laboratory, Sandy Hook, NJ, United States
| | - Richard W Brill
- NOAA Fisheries, Northeast Fisheries Science Center, James J. Howard Marine Sciences Laboratory, Sandy Hook, NJ, United States
| | - Cameron Farrington
- NOAA Fisheries, Northeast Fisheries Science Center, James J. Howard Marine Sciences Laboratory, Sandy Hook, NJ, United States
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Richardson DE, Marancik KE, Guyon JR, Lutcavage ME, Galuardi B, Lam CH, Walsh HJ, Wildes S, Yates DA, Hare JA. Discovery of a spawning ground reveals diverse migration strategies in Atlantic bluefin tuna (Thunnus thynnus). Proc Natl Acad Sci U S A 2016; 113:3299-304. [PMID: 26951668 PMCID: PMC4812764 DOI: 10.1073/pnas.1525636113] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Atlantic bluefin tuna are a symbol of both the conflict between preservationist and utilitarian views of top ocean predators, and the struggle to reach international consensus on the management of migratory species. Currently, Atlantic bluefin tuna are managed as an early-maturing eastern stock, which spawns in the Mediterranean Sea, and a late-maturing western stock, which spawns in the Gulf of Mexico. However, electronic tagging studies show that many bluefin tuna, assumed to be of a mature size, do not visit either spawning ground during the spawning season. Whether these fish are spawning in an alternate location, skip-spawning, or not spawning until an older age affects how vulnerable this species is to anthropogenic stressors including exploitation. We use larval collections to demonstrate a bluefin tuna spawning ground in the Slope Sea, between the Gulf Stream and northeast United States continental shelf. We contend that western Atlantic bluefin tuna have a differential spawning migration, with larger individuals spawning in the Gulf of Mexico, and smaller individuals spawning in the Slope Sea. The current life history model, which assumes only Gulf of Mexico spawning, overestimates age at maturity for the western stock. Furthermore, individual tuna occupy both the Slope Sea and Mediterranean Sea in separate years, contrary to the prevailing view that individuals exhibit complete spawning-site fidelity. Overall, this complexity of spawning migrations questions whether there is complete independence in the dynamics of eastern and western Atlantic bluefin tuna and leads to lower estimates of the vulnerability of this species to exploitation and other anthropogenic stressors.
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Affiliation(s)
- David E Richardson
- Northeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Narragansett, RI 02882;
| | - Katrin E Marancik
- Integrated Statistics, Contractor for Northeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Narragansett, RI 02882
| | - Jeffrey R Guyon
- Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Juneau, AK 99801
| | - Molly E Lutcavage
- Large Pelagics Research Center, School for the Environment, University of Massachusetts Boston, Gloucester, MA 01931
| | - Benjamin Galuardi
- School of Marine Science and Technology, University of Massachusetts Dartmouth, Fairhaven, MA 02719; Greater Atlantic Regional Fisheries Office, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Gloucester, MA 01930
| | - Chi Hin Lam
- Large Pelagics Research Center, School for the Environment, University of Massachusetts Boston, Gloucester, MA 01931
| | - Harvey J Walsh
- Northeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Narragansett, RI 02882
| | - Sharon Wildes
- Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Juneau, AK 99801
| | - Douglas A Yates
- Alaska Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Juneau, AK 99801
| | - Jonathan A Hare
- Northeast Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Narragansett, RI 02882
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40
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Bonanomi S, Overgaard Therkildsen N, Retzel A, Berg Hedeholm R, Pedersen MW, Meldrup D, Pampoulie C, Hemmer-Hansen J, Grønkjaer P, Nielsen EE. Historical DNA documents long-distance natal homing in marine fish. Mol Ecol 2016; 25:2727-34. [PMID: 26859133 DOI: 10.1111/mec.13580] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 12/07/2015] [Accepted: 12/21/2015] [Indexed: 01/27/2023]
Abstract
The occurrence of natal homing in marine fish remains a fundamental question in fish ecology as its unequivocal demonstration requires tracking of individuals from fertilization to reproduction. Here, we provide evidence of long-distance natal homing (>1000 km) over more than 60 years in Atlantic cod (Gadus morhua), through genetic analysis of archived samples from marked and recaptured individuals. Using a high differentiation single-nucleotide polymorphism assay, we demonstrate that the vast majority of cod tagged in West Greenland and recaptured on Icelandic spawning grounds belonged to the Iceland offshore population, strongly supporting a hypothesis of homing. The high degree of natal fidelity observed provides the evolutionary settings for development of locally adapted populations in marine fish and emphasize the need to consider portfolio effects in marine fisheries management strategies.
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Affiliation(s)
- Sara Bonanomi
- Section for Marine Living Resources, National Institute of Aquatic Resources, Technical University of Denmark, Vejlsøvej 39, 8600, Silkeborg, Denmark.,Greenland Climate Research Centre, Greenland Institute of Natural Resources, Kivioq 2, PO Box 570, 3900, Nuuk, Greenland
| | - Nina Overgaard Therkildsen
- Greenland Climate Research Centre, Greenland Institute of Natural Resources, Kivioq 2, PO Box 570, 3900, Nuuk, Greenland.,Hopkins Marine Station, Department of Biology, Stanford University, 120 Oceanview Blvd, Pacific Grove, CA, 93950, USA
| | - Anja Retzel
- Greenland Institute of Natural Resources, Kivioq 2, PO Box 570, 3900, Nuuk, Greenland
| | - Rasmus Berg Hedeholm
- Greenland Institute of Natural Resources, Kivioq 2, PO Box 570, 3900, Nuuk, Greenland
| | - Martin Waever Pedersen
- Section for Marine Living Resources, National Institute of Aquatic Resources, Technical University of Denmark, Jaegersborg Allé 1, 2920, Charlottenlund, Denmark
| | - Dorte Meldrup
- Section for Marine Living Resources, National Institute of Aquatic Resources, Technical University of Denmark, Vejlsøvej 39, 8600, Silkeborg, Denmark
| | | | - Jakob Hemmer-Hansen
- Section for Marine Living Resources, National Institute of Aquatic Resources, Technical University of Denmark, Vejlsøvej 39, 8600, Silkeborg, Denmark
| | - Peter Grønkjaer
- Greenland Climate Research Centre, Greenland Institute of Natural Resources, Kivioq 2, PO Box 570, 3900, Nuuk, Greenland.,Department of Bioscience, Aarhus University, Ole Worms Allé 1, 8000, Aarhus, Denmark
| | - Einar Eg Nielsen
- Section for Marine Living Resources, National Institute of Aquatic Resources, Technical University of Denmark, Vejlsøvej 39, 8600, Silkeborg, Denmark.,Greenland Climate Research Centre, Greenland Institute of Natural Resources, Kivioq 2, PO Box 570, 3900, Nuuk, Greenland
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Endres CS, Putman NF, Ernst DA, Kurth JA, Lohmann CMF, Lohmann KJ. Multi-Modal Homing in Sea Turtles: Modeling Dual Use of Geomagnetic and Chemical Cues in Island-Finding. Front Behav Neurosci 2016; 10:19. [PMID: 26941625 PMCID: PMC4761866 DOI: 10.3389/fnbeh.2016.00019] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 02/01/2016] [Indexed: 01/18/2023] Open
Abstract
Sea turtles are capable of navigating across large expanses of ocean to arrive at remote islands for nesting, but how they do so has remained enigmatic. An interesting example involves green turtles (Chelonia mydas) that nest on Ascension Island, a tiny land mass located approximately 2000 km from the turtles' foraging grounds along the coast of Brazil. Sensory cues that turtles are known to detect, and which might hypothetically be used to help locate Ascension Island, include the geomagnetic field, airborne odorants, and waterborne odorants. One possibility is that turtles use magnetic cues to arrive in the vicinity of the island, then use chemical cues to pinpoint its location. As a first step toward investigating this hypothesis, we used oceanic, atmospheric, and geomagnetic models to assess whether magnetic and chemical cues might plausibly be used by turtles to locate Ascension Island. Results suggest that waterborne and airborne odorants alone are insufficient to guide turtles from Brazil to Ascension, but might permit localization of the island once turtles arrive in its vicinity. By contrast, magnetic cues might lead turtles into the vicinity of the island, but would not typically permit its localization because the field shifts gradually over time. Simulations reveal, however, that the sequential use of magnetic and chemical cues can potentially provide a robust navigational strategy for locating Ascension Island. Specifically, one strategy that appears viable is following a magnetic isoline into the vicinity of Ascension Island until an odor plume emanating from the island is encountered, after which turtles might either: (1) initiate a search strategy; or (2) follow the plume to its island source. These findings are consistent with the hypothesis that sea turtles, and perhaps other marine animals, use a multi-modal navigational strategy for locating remote islands.
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Affiliation(s)
| | - Nathan F. Putman
- Biology Department, University of North CarolinaChapel Hill, NC, USA
| | - David A. Ernst
- Biology Department, University of North CarolinaChapel Hill, NC, USA
| | - Jessica A. Kurth
- Biology Department, University of North CarolinaChapel Hill, NC, USA
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André C, Svedäng H, Knutsen H, Dahle G, Jonsson P, Ring AK, Sköld M, Jorde PE. Population structure in Atlantic cod in the eastern North Sea-Skagerrak-Kattegat: early life stage dispersal and adult migration. BMC Res Notes 2016; 9:63. [PMID: 26843185 PMCID: PMC4739106 DOI: 10.1186/s13104-016-1878-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Accepted: 01/20/2016] [Indexed: 11/23/2022] Open
Abstract
Background In marine fish species, where pelagic egg and larvae drift with ocean currents, population structure has been suggested to be maintained by larval retention due to hydrographic structuring and by homing of adult fish to natal areas. Whilst natal homing of adults has been demonstrated for anadromous and coral reef fishes, there are few documented examples of philopatric migration in temperate marine fish species. Results Here, we demonstrate temporally stable genetic differentiation among spawning populations of Atlantic cod (Gadus morhua L.), and present genetic and behavioural evidence for larval drift and philopatric migration in the eastern North Sea-Skagerrak-Kattegat area. We show that juvenile cod collected in the eastern Skagerrak and central Kattegat are genetically similar to cod from offshore spawning areas in the eastern North Sea. Genetic assignment of individual 2–5 year old fish indicates that cod residing at, or migrating towards, spawning areas in Kattegat and the North Sea display philopatric behaviours. Conclusions Together these findings suggest a loop between spawning, larval drift and adult return-migrations to spawning areas and underlines that both oceanographic processes and migratory behaviour in the adult phase may be important for stock separation and integrity in marine temperate fishes such as Atlantic cod. Electronic supplementary material The online version of this article (doi:10.1186/s13104-016-1878-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Carl André
- Department of Marine Sciences-Tjärnö, University of Gothenburg, 452 96, Strömstad, Sweden.
| | - Henrik Svedäng
- Department of Aquatic Resources, Institute of Marine Research, Swedish University of Agricultural Sciences, 453 21, Lysekil, Sweden.
| | - Halvor Knutsen
- Institute of Marine Research, Flødevigen, 4817, His, Norway. .,Department of Biosciences, Centre for Ecological and Evolutionary Synthesis, University of Oslo, P.O. Box 1066, Blindern, 0316, Oslo, Norway. .,University of Agder, 4604, Kristiansand, Norway.
| | - Geir Dahle
- Institute of Marine Research, PO Box, 1870, 5817, Nordnes, Bergen, Norway.
| | - Patrik Jonsson
- Department of Aquatic Resources, Institute of Marine Research, Swedish University of Agricultural Sciences, 453 21, Lysekil, Sweden.
| | - Anna-Karin Ring
- Department of Marine Sciences-Tjärnö, University of Gothenburg, 452 96, Strömstad, Sweden.
| | - Mattias Sköld
- Department of Aquatic Resources, Institute of Marine Research, Swedish University of Agricultural Sciences, 453 21, Lysekil, Sweden.
| | - Per Erik Jorde
- Department of Biosciences, Centre for Ecological and Evolutionary Synthesis, University of Oslo, P.O. Box 1066, Blindern, 0316, Oslo, Norway.
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Condini MV, Tanner SE, Reis-Santos P, Albuquerque CQ, Saint’Pierre TD, Vieira JP, Cabral HN, Garcia AM. Prolonged estuarine habitat use by dusky grouper Epinephelus marginatus at subtropical latitudes revealed by otolith microchemistry. ENDANGER SPECIES RES 2016. [DOI: 10.3354/esr00717] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Letessier TB, Bouchet PJ, Meeuwig JJ. Sampling mobile oceanic fishes and sharks: implications for fisheries and conservation planning. Biol Rev Camb Philos Soc 2015; 92:627-646. [PMID: 26680116 DOI: 10.1111/brv.12246] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 11/10/2015] [Accepted: 11/12/2015] [Indexed: 11/29/2022]
Abstract
Tuna, billfish, and oceanic sharks [hereafter referred to as 'mobile oceanic fishes and sharks' (MOFS)] are characterised by conservative life-history strategies and highly migratory behaviour across large, transnational ranges. Intense exploitation over the past 65 years by a rapidly expanding high-seas fishing fleet has left many populations depleted, with consequences at the ecosystem level due to top-down control and trophic cascades. Despite increases in both CITES and IUCN Red Listings, the demographic trajectories of oceanic sharks and billfish are poorly quantified and resolved at geographic and population levels. Amongst MOFS trajectories, those of tunas are generally considered better understood, yet several populations remain either overfished or of unknown status. MOFS population trends and declines therefore remain contentious, partly due to challenges in deriving accurate abundance and biomass indices. Two major management strategies are currently recognised to address conservation issues surrounding MOFS: (i) internationally ratified legal frameworks and their associated regional fisheries management organisations (RFMOs); and (ii) spatio-temporal fishery closures, including no-take marine protected areas (MPAs). In this context, we first review fishery-dependent studies relying on data derived from catch records and from material accessible through fishing extraction, under the umbrella of RFMO-administrated management. Challenges in interpreting catch statistics notwithstanding, we find that fishery-dependent studies have enhanced the accuracy of biomass indices and the management strategies they inform, by addressing biases in reporting and non-random effort, and predicting drivers of spatial variability across meso- and oceanic scales in order to inform stock assessments. By contrast and motivated by the increase in global MPA coverage restricting extractive activities, we then detail ways in which fishery-independent methods are increasingly improving and steering management by exploring facets of MOFS ecology thus far poorly grasped. Advances in telemetry are increasingly used to explore ontogenic and seasonal movements, and provide means to consider MOFS migration corridors and residency patterns. The characterisation of trophic relationships and prey distribution through biochemical analysis and hydro-acoustics surveys has enabled the tracking of dietary shifts and mapping of high-quality foraging grounds. We conclude that while a scientific framework is available to inform initial design and subsequent implementation of MPAs, there is a shortage in the capacity to answer basic but critical questions about MOFS ecology (who, when, where?) required to track populations non-extractively, thereby presenting a barrier to assessing empirically the performance of MPA-based management for MOFS. This sampling gap is exacerbated by the increased establishment of large (>10000 km2 ) and very large MPAs (VLMPAs, >100000 km2 ) - great expanses of ocean lacking effective monitoring strategies and survey regimes appropriate to those scales. To address this shortcoming, we demonstrate the use of a non-extractive protocol to measure MOFS population recovery and MPA efficiency. We further identify technological avenues for monitoring at the VLMPA scale, through the use of spotter planes, drones, satellite technology, and horizontal acoustics, and highlight their relevance to the ecosystem-based framework of MOFS management.
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Affiliation(s)
- Tom B Letessier
- Centre for Marine Futures, Oceans Institute, The University of Western Australia (M470), 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.,Institute of Zoology, Zoological Society of London, Regent's Park, London, NW1 4RY, UK
| | - Phil J Bouchet
- Centre for Marine Futures, Oceans Institute, The University of Western Australia (M470), 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.,School of Animal Biology, The University of Western Australia (M470), 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
| | - Jessica J Meeuwig
- Centre for Marine Futures, Oceans Institute, The University of Western Australia (M470), 35 Stirling Highway, Crawley, Western Australia, 6009, Australia.,School of Animal Biology, The University of Western Australia (M470), 35 Stirling Highway, Crawley, Western Australia, 6009, Australia
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Trumbić Ž, Bekaert M, Taggart JB, Bron JE, Gharbi K, Mladineo I. Development and validation of a mixed-tissue oligonucleotide DNA microarray for Atlantic bluefin tuna, Thunnus thynnus (Linnaeus, 1758). BMC Genomics 2015; 16:1007. [PMID: 26607231 PMCID: PMC4659210 DOI: 10.1186/s12864-015-2208-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 11/12/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The largest of the tuna species, Atlantic bluefin tuna (Thunnus thynnus), inhabits the North Atlantic Ocean and the Mediterranean Sea and is considered to be an endangered species, largely a consequence of overfishing. T. thynnus aquaculture, referred to as fattening or farming, is a capture based activity dependent on yearly renewal from the wild. Thus, the development of aquaculture practices independent of wild resources can provide an important contribution towards ensuring security and sustainability of this species in the longer-term. The development of such practices is today greatly assisted by large scale transcriptomic studies. RESULTS We have used pyrosequencing technology to sequence a mixed-tissue normalised cDNA library, derived from adult T. thynnus. A total of 976,904 raw sequence reads were assembled into 33,105 unique transcripts having a mean length of 893 bases and an N50 of 870. Of these, 33.4% showed similarity to known proteins or gene transcripts and 86.6% of them were matched to the congeneric Pacific bluefin tuna (Thunnus orientalis) genome, compared to 70.3% for the more distantly related Nile tilapia (Oreochromis niloticus) genome. Transcript sequences were used to develop a novel 15 K Agilent oligonucleotide DNA microarray for T. thynnus and comparative tissue gene expression profiles were inferred for gill, heart, liver, ovaries and testes. Functional contrasts were strongest between gills and ovaries. Gills were particularly associated with immune system, signal transduction and cell communication, while ovaries displayed signatures of glycan biosynthesis, nucleotide metabolism, transcription, translation, replication and repair. CONCLUSIONS Sequence data generated from a novel mixed-tissue T. thynnus cDNA library provide an important transcriptomic resource that can be further employed for study of various aspects of T. thynnus ecology and genomics, with strong applications in aquaculture. Tissue-specific gene expression profiles inferred through the use of novel oligo-microarray can serve in the design of new and more focused transcriptomic studies for future research of tuna physiology and assessment of the welfare in a production environment.
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Affiliation(s)
- Željka Trumbić
- University Department of Marine Studies, University of Split, Split, Croatia.
| | - Michaël Bekaert
- Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling, Scotland, UK.
| | - John B Taggart
- Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling, Scotland, UK.
| | - James E Bron
- Institute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling, Scotland, UK.
| | - Karim Gharbi
- Edinburgh Genomics, School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3FL, Scotland, UK.
| | - Ivona Mladineo
- Institute of Oceanography and Fisheries, Split, Croatia.
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Luo J, Ault JS, Shay LK, Hoolihan JP, Prince ED, Brown CA, Rooker JR. Ocean Heat Content Reveals Secrets of Fish Migrations. PLoS One 2015; 10:e0141101. [PMID: 26484541 PMCID: PMC4617419 DOI: 10.1371/journal.pone.0141101] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 10/05/2015] [Indexed: 11/19/2022] Open
Abstract
For centuries, the mechanisms surrounding spatially complex animal migrations have intrigued scientists and the public. We present a new methodology using ocean heat content (OHC), a habitat metric that is normally a fundamental part of hurricane intensity forecasting, to estimate movements and migration of satellite-tagged marine fishes. Previous satellite-tagging research of fishes using archival depth, temperature and light data for geolocations have been too coarse to resolve detailed ocean habitat utilization. We combined tag data with OHC estimated from ocean circulation and transport models in an optimization framework that substantially improved geolocation accuracy over SST-based tracks. The OHC-based movement track provided the first quantitative evidence that many of the tagged highly migratory fishes displayed affinities for ocean fronts and eddies. The OHC method provides a new quantitative tool for studying dynamic use of ocean habitats, migration processes and responses to environmental changes by fishes, and further, improves ocean animal tracking and extends satellite-based animal tracking data for other potential physical, ecological, and fisheries applications.
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Affiliation(s)
- Jiangang Luo
- Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida, United States of America
| | - Jerald S. Ault
- Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida, United States of America
- * E-mail:
| | - Lynn K. Shay
- Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida, United States of America
| | - John P. Hoolihan
- Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, Florida, United States of America
| | - Eric D. Prince
- Southeast Fisheries Science Center, Sustainable Fisheries Division, Highly Migratory Species Branch, NOAA Fisheries, Miami, Florida, United States of America
| | - Craig A. Brown
- Southeast Fisheries Science Center, Sustainable Fisheries Division, Highly Migratory Species Branch, NOAA Fisheries, Miami, Florida, United States of America
| | - Jay R. Rooker
- Department of Marine Biology, Texas A&M University, Galveston, Texas, United States of America
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Williams AK, McInnes AS, Rooker JR, Quigg A. Changes in Microbial Plankton Assemblages Induced by Mesoscale Oceanographic Features in the Northern Gulf of Mexico. PLoS One 2015; 10:e0138230. [PMID: 26375709 PMCID: PMC4574113 DOI: 10.1371/journal.pone.0138230] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 08/27/2015] [Indexed: 11/27/2022] Open
Abstract
Mesoscale circulation generated by the Loop Current in the Northern Gulf of Mexico (NGOM) delivers growth-limiting nutrients to the microbial plankton of the euphotic zone. Consequences of physicochemically driven community shifts on higher order consumers and subsequent impacts on the biological carbon pump remain poorly understood. This study evaluates microbial plankton <10 μm abundance and community structure across both cyclonic and anti-cyclonic circulation features in the NGOM using flow cytometry (SYBR Green I and autofluorescence parameters). Non-parametric multivariate hierarchical cluster analyses indicated that significant spatial variability in community structure exists such that stations that clustered together were defined as having a specific ‘microbial signature’ (i.e. statistically homogeneous community structure profiles based on relative abundance of microbial groups). Salinity and a combination of sea surface height anomaly and sea surface temperature were determined by distance based linear modeling to be abiotic predictor variables significantly correlated to changes in microbial signatures. Correlations between increased microbial abundance and availability of nitrogen suggest nitrogen-limitation of microbial plankton in this open ocean area. Regions of combined coastal water entrainment and mesoscale convergence corresponded to increased heterotrophic prokaryote abundance relative to autotrophic plankton. The results provide an initial assessment of how mesoscale circulation potentially influences microbial plankton abundance and community structure in the NGOM.
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Affiliation(s)
- Alicia K. Williams
- Department of Oceanography, Texas A&M University, College Station, Texas, United States of America
- * E-mail:
| | - Allison S. McInnes
- Department of Oceanography, Texas A&M University, College Station, Texas, United States of America
- Climate Change Cluster, University of Technology, Sydney, Australia
| | - Jay R. Rooker
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
- Department of Wildlife and Fisheries, Texas A&M University, College Station, Texas, United States of America
| | - Antonietta Quigg
- Department of Oceanography, Texas A&M University, College Station, Texas, United States of America
- Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas, United States of America
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Gordoa A, Sanz N, Viñas J. Individual Spawning Duration of Captive Atlantic Bluefin Tuna (Thunnus thynnus) Revealed by Mitochondrial DNA Analysis of Eggs. PLoS One 2015; 10:e0136733. [PMID: 26317343 PMCID: PMC4552825 DOI: 10.1371/journal.pone.0136733] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 08/08/2015] [Indexed: 11/19/2022] Open
Abstract
This study presents the first results on Atlantic bluefin tuna (Thunnus thynnus) individual spawning duration and its short-term temporal behavior. The study was based on direct measurements resulting from mtDNA analysis of the offspring of spawners held in transport cages during the 2013 spawning monitoring survey in Balearic waters. The number of females consisted of approximately 259 individuals with an average weight of 186 kg. The survey began on May 22 and ended on July 3. Spawning started on May 30 and was observed every night afterwards. The sampling of eggs for genetic monitoring was conducted for 9 days interspersed from the beginning of spawning to the end of the survey. A total of 946 eggs were analyzed and revealed 129 different haplotypes; 77 of these were not previously detected in the Mediterranean. A total of 69 haplotypes were observed in more than one spawning event and those with higher frequency lasted their maximum possible duration. The haplotypes present at the beginning of spawning were also identified at the end of the sampling, indicating a minimum spawning duration of 34 days, and individual annual fecundity was estimated at around 1290 eggs gr-1. These results differed from those generally presumed until now and are indicative of a much higher fecundity. Females exhibited a regular spawning schedule but with the capacity to shift the spawning hour during the spawning season. These results were observed for the eastern population of Atlantic bluefin tuna and before extrapolating to the western population, their validity should be proved.
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Affiliation(s)
- Ana Gordoa
- Department of Marine Ecology, Centro de Estudios Avanzados de Blanes, Spanish National Research Council (CSIC), Blanes, Girona, Spain
- * E-mail:
| | - Nuria Sanz
- Laboratori d'Ictiologia Genètica, Departament de Biologia, Facultat de Ciències, Universitat de Girona, Girona, Spain
| | - Jordi Viñas
- Laboratori d'Ictiologia Genètica, Departament de Biologia, Facultat de Ciències, Universitat de Girona, Girona, Spain
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Kim JK, Lee SJ, Lee WC, Kim JB, Kim HC. Restricted separation of the spawning areas of the two lineages of sand lance, Ammodytes personatus, in the Yellow and East Seas and taxonomic implications. BIOCHEM SYST ECOL 2015. [DOI: 10.1016/j.bse.2015.06.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Abstract
Although it is well-accepted that the geomagnetic field (GMF) plays an important role in animal navigation and migration, key problems remain unanswered. To explain the puzzling ability of hatchlings to embark on unexplored migrational journeys we hypothesize that mothers who have previously navigated the trip enable their offspring by direct transfer of route information to their eggs prior to hatching. The freshly hatched animal registers the local GMF as a reference point before embarking on the journey the mother has prepared for it. This process represents a novel type of biological cycle that finesses the need to treat questions such as natal homing and route parameters separately.
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Affiliation(s)
- A R Liboff
- a Department of Physics , Oakland University , Rochester Hills , MI, USA
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