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Smith R, Hitkolok E, Loewen T, Dumond A, Swanson H. Migration timing and marine space use of an anadromous Arctic fish (Arctic Char, Salvelinus alpinus) revealed by local spatial statistics and network analysis. MOVEMENT ECOLOGY 2024; 12:12. [PMID: 38310319 PMCID: PMC10837978 DOI: 10.1186/s40462-024-00455-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 01/29/2024] [Indexed: 02/05/2024]
Abstract
BACKGROUND The ice-free season (typically late-June to early-October) is crucial for anadromous species of fish in the Arctic, including Arctic Char (Salvelinus alpinus), which must acquire adequate resources for growth, reproduction, and survival during a brief period of feeding in the marine environment. Arctic Char is an important food fish for Inuit communities across the Arctic. Understanding drivers and patterns of migration in the marine environment is thus essential for conservation and management of the species. METHODS We used passive acoustic telemetry to characterize migration patterns of 51 individual anadromous Arctic Char during the ice-free season in the marine environment of Coronation Gulf (Nunavut, Canada; 2019-2022). Based on recent genetic evidence, some tagged individuals were likely Dolly Varden (Salvelinus malma malma), a closely related species to Arctic Char. Using local Getis G* and network analysis, we described movement patterns and identified high-use locations in the marine environment. We also related freshwater overwintering location to migration timing and movement pattern. RESULTS Comparing groups of fish that overwintered in distinct locations, we found: (i) limited evidence that marine movements were associated with overwintering location; (ii) minor differences in use of marine space; and, (iii) timing of freshwater return differed significantly between overwintering groups, and was related to length and difficulty of the migratory pathway in freshwater. Results from both network analysis and local Getis G* revealed that, regardless of overwintering location, coastal locations were highly used by fish. CONCLUSIONS Overwintering locations, and the migratory routes to access overwintering locations, affect the timing of freshwater return. Preference of fish for coastal marine locations is likely due to abundance of forage and patterns in break-up of sea ice. Similarities in marine space use and movement patterns present challenges for managing this and other mixed stock fisheries of anadromous Salvelinus spp. Absences or periods of time when fish were not detected prevented comprehensive assessment of movement patterns. Local Getis G*, a local indicator of spatial association, is a helpful tool in identifying locations associated with absences in acoustic telemetry arrays, and is a complementary method to network analysis.
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Affiliation(s)
- Rosie Smith
- Department of Biology, University of Waterloo, Waterloo, ON, Canada.
| | - Eric Hitkolok
- Kugluktuk Hunters and Trappers Organization, Kugluktuk, NU, Canada
| | - Tracey Loewen
- Fisheries and Oceans Canada, Freshwater Institute, Winnipeg, MB, Canada
| | - Amanda Dumond
- Kugluktuk Hunters and Trappers Organization, Kugluktuk, NU, Canada
| | - Heidi Swanson
- Department of Biology, University of Waterloo, Waterloo, ON, Canada.
- Department of Biology, Wilfrid Laurier University, Waterloo, ON, Canada.
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Kraft S, Gandra M, Lennox RJ, Mourier J, Winkler AC, Abecasis D. Residency and space use estimation methods based on passive acoustic telemetry data. MOVEMENT ECOLOGY 2023; 11:12. [PMID: 36859381 PMCID: PMC9976422 DOI: 10.1186/s40462-022-00364-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 12/26/2022] [Indexed: 06/18/2023]
Abstract
Acoustic telemetry has helped overcome many of the challenges faced when studying the movement ecology of aquatic species, allowing to obtain unprecedented amounts of data. This has made it into one of the most widely used methods nowadays. Many ways to analyse acoustic telemetry data have been made available and deciding on how to analyse the data requires considering the type of research objectives, relevant properties of the data (e.g., resolution, study design, equipment), habits of the study species, researcher experience, among others. To ease this decision process, here we showcase (1) some of the methods used to estimate pseudo-positions and positions from raw acoustic telemetry data, (2) methods to estimate residency and (3) methods to estimate two-dimensional home and occurrence range using geometric or hull-based methods and density-distribution methods, a network-based approach, and three-dimensional methods. We provide examples of some of these were tested using a sample of real data. With this we intend to provide the necessary background for the selection of the method(s) that better fit specific research objectives when using acoustic telemetry.
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Affiliation(s)
- S Kraft
- Center of Marine Sciences (CCMAR), Universidade do Algarve, Faro, Portugal.
| | - M Gandra
- Center of Marine Sciences (CCMAR), Universidade do Algarve, Faro, Portugal
| | - R J Lennox
- Laboratory for Freshwater Ecology and Inland Fisheries at NORCE Norwegian Research Center, Bergen, Norway
- Norwegian Institute for Nature Research (NINA), Trondheim, Norway
| | - J Mourier
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Sète, France
| | - A C Winkler
- Center of Marine Sciences (CCMAR), Universidade do Algarve, Faro, Portugal
- Department of Ichthyology and Fisheries Science, Rhodes University, Makhanda, South Africa
| | - D Abecasis
- Center of Marine Sciences (CCMAR), Universidade do Algarve, Faro, Portugal
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Bopp JJ, Sclafani M, Frisk MG, McKown K, Ziegler‐Fede C, Smith DR, Cerrato RM. Telemetry reveals migratory drivers and disparate space use across seasons and age‐groups in American horseshoe crabs. Ecosphere 2021. [DOI: 10.1002/ecs2.3811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Justin J. Bopp
- School of Marine and Atmospheric Sciences Stony Brook University 145 Endeavour Hall Stony Brook New York 11794 USA
| | - Matthew Sclafani
- School of Marine and Atmospheric Sciences Stony Brook University 145 Endeavour Hall Stony Brook New York 11794 USA
- Cornell University Cooperative Extension of Suffolk County 23 Griffing Avenue # 100 Riverhead New York 1190 USA
| | - Michael G. Frisk
- School of Marine and Atmospheric Sciences Stony Brook University 145 Endeavour Hall Stony Brook New York 11794 USA
| | - Kim McKown
- New York State Department of Environmental Conservation 205 North Belle Meade Road, Suite 1 East Setauket New York 11733 USA
| | - Catherine Ziegler‐Fede
- New York State Department of Environmental Conservation 205 North Belle Meade Road, Suite 1 East Setauket New York 11733 USA
| | - David R. Smith
- United States Geological Survey Eastern Ecological Science Center 11649 Kearneysville Road Kearneysville West Virginia 25430 USA
| | - Robert M. Cerrato
- School of Marine and Atmospheric Sciences Stony Brook University 145 Endeavour Hall Stony Brook New York 11794 USA
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Baremore IE, Graham RT, Burgess GH, Castellanos DW. Movements and residency of Caribbean reef sharks at a remote atoll in Belize, Central America. ROYAL SOCIETY OPEN SCIENCE 2021; 8:201036. [PMID: 34430037 PMCID: PMC8355683 DOI: 10.1098/rsos.201036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
We investigated spatial use patterns of 77 Caribbean reef sharks (Carcharhinus perezi) at Lighthouse Reef Atoll, Belize over 7 years using residency patterns, kernel density (KD) estimation and network analysis. We found a high degree individual variation in spatial use of the atoll, but there were significant differences in residency and activity space between sexes, with females being overall more resident. Ontogenetic shifts in movement and residency were largely limited to females, as the residency index increased and activity space estimates decreased as females matured, while for males there was no relationship between space use or residency and size. KD analysis revealed many mature females were highly resident to discrete locations, and average activity space of the intermediate-sized sharks was significantly larger than that of the adults, but not the smallest sharks. Markov chain analyses indicated that the southwestern portion of the atoll was the most important movement corridor for all sharks. Both the Blue Hole and Half Moon Caye Natural Monuments provide some protection for larger Caribbean reef sharks; however, a gear ban on longlines on the southwestern forereef between Long Caye and the channel entrance to the Blue Hole would maximize the benefits for all sharks.
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Affiliation(s)
| | | | - George H. Burgess
- Florida Museum of Natural History, University of Florida, Dickinson Hall, Museum Road, Gainesville, FL 32611, USA
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5
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Fortin D, Brooke CF, Lamirande P, Fritz H, McLoughlin PD, Pays O. Quantitative Spatial Ecology to Promote Human-Wildlife Coexistence: A Tool for Integrated Landscape Management. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2020. [DOI: 10.3389/fsufs.2020.600363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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6
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Axworthy JB, Smith JM, Wing MS, Quinn TP. Sex biased individual variation in movement patterns of a highly mobile, near-shore marine planktivore, the reef manta ray Mobula alfredi. JOURNAL OF FISH BIOLOGY 2019; 95:1399-1406. [PMID: 31589768 DOI: 10.1111/jfb.14148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Accepted: 10/04/2019] [Indexed: 06/10/2023]
Abstract
We examined individual variation and the role of sex on the movements of the reef manta ray Mobula alfredi. Specifically, we analysed several movement metrics using 6 years of nightly observations (1 January 2009-31 December 2014) of 118 individually identifiable manta rays at two discrete but spatially proximate sites, locally known as Manta Heaven and Manta Village, 15 km apart on the west side of the island of Hawaii, USA. Males were slightly more often (33.5%, model fitted mean, P < 0.05) observed than females at Manta Heaven, but females were much more often (156.4%, model fitted mean, P < 0.05) observed at Manta Village. Movement patterns among individuals varied greatly, but the level of variation was similar between sexes. Some animals, mainly females, displayed more resident patterns, whereas other, more mobile, animals moved between sites more frequently and had longer gaps between sightings. We did not detect discrete behavioural groups; rather, individuals varied along a continuous spectrum from many observations and high affinity to few observations and low fidelity to survey locations. These complex and variable movement patterns observed at the individual level, between sexes and between two nearby sites, in Hawaii's manta rays highlight the need for finer scale considerations in conservation and management of highly mobile marine populations.
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Affiliation(s)
- Jeremy B Axworthy
- School of Aquatic and Fishery Sciences, University of Washington, Seattle, Washington, USA
| | - Joseph M Smith
- Fish Ecology Division, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, Hammond, Oregon, USA
| | - Martina S Wing
- Ocean Wings Hawaii, Inc., dba Manta Ray Advocates, Kailua-Kona, Hawaii, USA
| | - Thomas P Quinn
- School of Aquatic and Fishery Sciences, University of Washington, Seattle, Washington, USA
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7
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Whoriskey K, Martins EG, Auger‐Méthé M, Gutowsky LFG, Lennox RJ, Cooke SJ, Power M, Mills Flemming J. Current and emerging statistical techniques for aquatic telemetry data: A guide to analysing spatially discrete animal detections. Methods Ecol Evol 2019. [DOI: 10.1111/2041-210x.13188] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kim Whoriskey
- Department of Mathematics and Statistics Dalhousie University Halifax Nova Scotia Canada
| | - Eduardo G. Martins
- Ecosystem Science and Management Program University of Northern British Columbia Prince George British Columbia Canada
| | - Marie Auger‐Méthé
- Department of Statistics University of British Columbia Vancouver British Columbia Canada
- Institute for the Oceans and Fisheries University of British Columbia Vancouver British Columbia Canada
| | - Lee F. G. Gutowsky
- Fish Ecology and Conservation Physiology LaboratoryDepartment of Biology Carleton University Ottawa Ontario Canada
- Aquatic Resource and Monitoring Section Ontario Ministry of Natural Resources and Forestry Peterborough Ontario Canada
| | - Robert J. Lennox
- Fish Ecology and Conservation Physiology LaboratoryDepartment of Biology Carleton University Ottawa Ontario Canada
- Laboratory for Freshwater Ecology and Inland Fisheries NORCE Norwegian Research Centre Bergen Norway
| | - Steven J. Cooke
- Fish Ecology and Conservation Physiology LaboratoryDepartment of Biology Carleton University Ottawa Ontario Canada
| | - Michael Power
- Department of Biology University of Waterloo Waterloo Ontario Canada
| | - Joanna Mills Flemming
- Department of Mathematics and Statistics Dalhousie University Halifax Nova Scotia Canada
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8
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O'Neill R, Ó Maoiléidigh N, McGinnity P, Bond N, Culloty S. The novel use of pop-off satellite tags (PSATs) to investigate the migratory behaviour of European sea bass Dicentrarchus labrax. JOURNAL OF FISH BIOLOGY 2018; 92:1404-1421. [PMID: 29607514 DOI: 10.1111/jfb.13594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 02/14/2018] [Indexed: 06/08/2023]
Abstract
A total of 12 adult European sea bass Dicentrarchus labrax were tagged with pop-off satellite archival tags (PSAT) in Irish coastal waters and in offshore waters in the north-east Celtic Sea between 2015 and 2016. Archived data were successfully recovered from five of the 12 tags deployed, three from fish released in inshore Irish waters and two from fish released offshore in the eastern Celtic Sea. All three fish tagged in inshore waters were found to undertake migrations into the open ocean coinciding with the spawning period. These fish also exhibited fidelity to inshore sites post-migration, returning to the same general location (within c. 73 km, which is roughly the predicted mean accuracy of the method) of their original release site. Although the number of tracks obtained here was limited, some degree of aggregation between inshore and offshore tagged fish in the eastern Celtic Sea was noted during the expected spawning period suggesting PSATs can provide new information on specific spawning locations of European sea bass.
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Affiliation(s)
- R O'Neill
- School of Biological, Earth and Environmental Sciences, University College Cork, Ireland
| | | | - P McGinnity
- School of Biological, Earth and Environmental Sciences, University College Cork, Ireland
| | - N Bond
- Marine Institute, Furnace, Newport, Co. Mayo, Ireland
| | - S Culloty
- School of Biological, Earth and Environmental Sciences, University College Cork, Ireland
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9
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Bastille-Rousseau G, Douglas-Hamilton I, Blake S, Northrup JM, Wittemyer G. Applying network theory to animal movements to identify properties of landscape space use. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2018; 28:854-864. [PMID: 29420867 DOI: 10.1002/eap.1697] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 01/18/2018] [Accepted: 01/29/2018] [Indexed: 06/08/2023]
Abstract
Network (graph) theory is a popular analytical framework to characterize the structure and dynamics among discrete objects and is particularly effective at identifying critical hubs and patterns of connectivity. The identification of such attributes is a fundamental objective of animal movement research, yet network theory has rarely been applied directly to animal relocation data. We develop an approach that allows the analysis of movement data using network theory by defining occupied pixels as nodes and connection among these pixels as edges. We first quantify node-level (local) metrics and graph-level (system) metrics on simulated movement trajectories to assess the ability of these metrics to pull out known properties in movement paths. We then apply our framework to empirical data from African elephants (Loxodonta africana), giant Galapagos tortoises (Chelonoidis spp.), and mule deer (Odocoileous hemionus). Our results indicate that certain node-level metrics, namely degree, weight, and betweenness, perform well in capturing local patterns of space use, such as the definition of core areas and paths used for inter-patch movement. These metrics were generally applicable across data sets, indicating their robustness to assumptions structuring analysis or strategies of movement. Other metrics capture local patterns effectively, but were sensitive to specified graph properties, indicating case specific applications. Our analysis indicates that graph-level metrics are unlikely to outperform other approaches for the categorization of general movement strategies (central place foraging, migration, nomadism). By identifying critical nodes, our approach provides a robust quantitative framework to identify local properties of space use that can be used to evaluate the effect of the loss of specific nodes on range wide connectivity. Our network approach is intuitive, and can be implemented across imperfectly sampled or large-scale data sets efficiently, providing a framework for conservationists to analyze movement data. Functions created for the analyses are available within the R package moveNT.
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Affiliation(s)
- Guillaume Bastille-Rousseau
- Department of Fish, Wildlife, and Conservation Biology, Colorado State University, Fort Collins, Colorado, 80523, USA
- Save the Elephants, Nairobi, Kenya
| | | | - Stephen Blake
- Max Planck Institute for Ornithology, Radolfzell, Germany
- Charles Darwin Foundation, Puerto Ayora, Galapagos, Ecuador
| | - Joseph M Northrup
- Wildlife Research and Monitoring Section, Ontario Ministry of Natural Resources and Forestry, Peterborough, ON, Canada, K9L 1Z8
| | - George Wittemyer
- Department of Fish, Wildlife, and Conservation Biology, Colorado State University, Fort Collins, Colorado, 80523, USA
- Save the Elephants, Nairobi, Kenya
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10
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Prima M, Duchesne T, Fortin A, Rivest L, Fortin D. Combining network theory and reaction–advection–diffusion modelling for predicting animal distribution in dynamic environments. Methods Ecol Evol 2018. [DOI: 10.1111/2041-210x.12997] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Thierry Duchesne
- Department of Mathematics and StatisticsLaval University Quebec City QC Canada
| | - André Fortin
- Department of Mathematics and StatisticsLaval University Quebec City QC Canada
| | - Louis‐Paul Rivest
- Department of Mathematics and StatisticsLaval University Quebec City QC Canada
| | - Daniel Fortin
- Department of BiologyLaval University Quebec City QC Canada
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11
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Papastamatiou YP, Bodey TW, Friedlander AM, Lowe CG, Bradley D, Weng K, Priestley V, Caselle JE. Spatial separation without territoriality in shark communities. OIKOS 2018. [DOI: 10.1111/oik.04289] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yannis P. Papastamatiou
- Dept of Biological Sciences; Florida International Univ.; 3000 NE 151st st, MSB 355 North Miami FL 33181 USA
| | - Thomas W. Bodey
- Center for Ecology and Conservation, Univ. of Exeter Penryn Campus; Cornwall UK
| | - Alan M. Friedlander
- Dept of Biology; Univ. of Hawaii at Manoa; HI USA
- Pristine Seas, National Geographic Society; Washington DC USA
| | | | - Darcy Bradley
- Bren School of Environmental Science and Management, Univ. of California Santa Barbara; CA USA
| | - Kevin Weng
- Dept of Fisheries Science; Virginia Inst. of Marine Sciences, VI; USA
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12
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Michelot T, Langrock R, Bestley S, Jonsen ID, Photopoulou T, Patterson TA. Estimation and simulation of foraging trips in land-based marine predators. Ecology 2017; 98:1932-1944. [DOI: 10.1002/ecy.1880] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 04/18/2017] [Indexed: 01/31/2023]
Affiliation(s)
| | | | - Sophie Bestley
- Australian Antarctic Division; Department of Environment; Kingston Tasmania Australia
- Institute for Marine and Antarctic Studies; Hobart Tasmania Australia
| | - Ian D. Jonsen
- Macquarie University; Sydney New South Wales Australia
| | - Theoni Photopoulou
- Nelson Mandela Metropolitan University; Port Elizabeth South Africa
- University of Cape Town; Rondebosch South Africa
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13
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Cooke SJ, Brownscombe JW, Raby GD, Broell F, Hinch SG, Clark TD, Semmens JM. Remote bioenergetics measurements in wild fish: Opportunities and challenges. Comp Biochem Physiol A Mol Integr Physiol 2016; 202:23-37. [PMID: 27063208 DOI: 10.1016/j.cbpa.2016.03.022] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 03/08/2016] [Accepted: 03/31/2016] [Indexed: 10/22/2022]
Abstract
The generalized energy budget for fish (i.e., Energy Consumed=Metabolism+Waste+Growth) is as relevant today as when it was first proposed decades ago and serves as a foundational concept in fish biology. Yet, generating accurate measurements of components of the bioenergetics equation in wild fish is a major challenge. How often does a fish eat and what does it consume? How much energy is expended on locomotion? How do human-induced stressors influence energy acquisition and expenditure? Generating answers to these questions is important to fisheries management and to our understanding of adaptation and evolutionary processes. The advent of electronic tags (transmitters and data loggers) has provided biologists with improved opportunities to understand bioenergetics in wild fish. Here, we review the growing diversity of electronic tags with a focus on sensor-equipped devices that are commercially available (e.g., heart rate/electrocardiogram, electromyogram, acceleration, image capture). Next, we discuss each component of the bioenergetics model, recognizing that most research to date has focused on quantifying the activity component of metabolism, and identify ways in which the other, less studied components (e.g., consumption, specific dynamic action component of metabolism, somatic growth, reproductive investment, waste) could be estimated remotely. We conclude with a critical but forward-looking appraisal of the opportunities and challenges in using existing and emerging electronic sensor-tags for the study of fish energetics in the wild. Electronic tagging has become a central and widespread tool in fish ecology and fisheries management; the growing and increasingly affordable toolbox of sensor tags will ensure this trend continues, which will lead to major advances in our understanding of fish biology over the coming decades.
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Affiliation(s)
- Steven J Cooke
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, 1125 Colonel By Dr., Ottawa, ON, K1S 5B6, Canada.
| | - Jacob W Brownscombe
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology, Carleton University, 1125 Colonel By Dr., Ottawa, ON, K1S 5B6, Canada
| | - Graham D Raby
- Great Lakes Institute of Environmental Research, University of Windsor, 401 Sunset Ave., Windsor, ON, N9B 3P4, Canada
| | - Franziska Broell
- Department of Oceanography, Dalhousie University, 1355 Oxford St., Halifax, NS, B3H 4R2, Canada
| | - Scott G Hinch
- Department of Forest & Conservation Sciences, University of British Columbia, 2424 Main Mall, Vancouver, BC, V6T 1Z4, Canada
| | - Timothy D Clark
- University of Tasmania and CSIRO Agriculture Flagship, 3-4 Castray Esplanade, Hobart, TAS 7000, Australia
| | - Jayson M Semmens
- Fisheries and Aquaculture Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS 7001, Australia
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Jacoby DMP, Freeman R. Emerging Network-Based Tools in Movement Ecology. Trends Ecol Evol 2016; 31:301-314. [PMID: 26879670 DOI: 10.1016/j.tree.2016.01.011] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 01/19/2016] [Accepted: 01/20/2016] [Indexed: 01/09/2023]
Abstract
New technologies have vastly increased the available data on animal movement and behaviour. Consequently, new methods deciphering the spatial and temporal interactions between individuals and their environments are vital. Network analyses offer a powerful suite of tools to disentangle the complexity within these dynamic systems, and we review these tools, their application, and how they have generated new ecological and behavioural insights. We suggest that network theory can be used to model and predict the influence of ecological and environmental parameters on animal movement, focusing on spatial and social connectivity, with fundamental implications for conservation. Refining how we construct and randomise spatial networks at different temporal scales will help to establish network theory as a prominent, hypothesis-generating tool in movement ecology.
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Affiliation(s)
- David M P Jacoby
- Institute of Zoology, Zoological Society of London, Regent's Park, London NW1 4RY, UK.
| | - Robin Freeman
- Institute of Zoology, Zoological Society of London, Regent's Park, London NW1 4RY, UK
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15
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Garcia J, Mourier J, Lenfant P. Spatial behavior of two coral reef fishes within a Caribbean marine protected area. MARINE ENVIRONMENTAL RESEARCH 2015; 109:41-51. [PMID: 26100078 DOI: 10.1016/j.marenvres.2015.06.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 05/28/2015] [Accepted: 06/08/2015] [Indexed: 06/04/2023]
Abstract
A better understanding of the key ecological processes of marine organisms is fundamental to improving design and effective implementation of marine protected areas (MPAs) and marine biodiversity. The movement behavior of coral reef fish is a complex mechanism that is highly linked to species life-history traits, predation risk and food resources. We used passive acoustic telemetry to study monthly, daily and hourly movement patterns and space use in two species, Schoolmaster snapper (Lutjanus apodus) and Stoplight parrotfish (Sparisoma viride). We investigated the spatial overlap between the two species and compared intra-specific spatial overlap between day and night. Presence-absence models showed different diel presence and habitat use patterns between the two species. We constructed a spatial network of the movement patterns, which showed that for both species when fish were detected by the array of receivers most movements were made around the coral reef habitat while occasionally moving to silt habitats. Our results show that most individuals made predictable daily crepuscular migrations between different locations and habitat types, although individual behavioral changes were observed for some individuals across time. Our study also highlights the necessity to consider multiple species during MPA implementation and to take into account the specific biological and ecological traits of each species. The low number of fish detected within the receiver array, as well as the intraspecific variability observed in this study, highlight the need to compare results across species and individuals to be used for MPA management.
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Affiliation(s)
- Jessica Garcia
- Univ. Perpignan Via Domitia, CEntre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, F-66860, Perpignan, France; CNRS, CEntre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, F-66860, Perpignan, France.
| | - Johann Mourier
- LabEx « CORAIL » - USR 3278 CNRS-EPHE-UPVD, Centre de Recherche Insulaire et Observatoire de l'Environnement (CRIOBE), BP 1013, 98 729, Papetoai, Moorea, French Polynesia
| | - Philippe Lenfant
- Univ. Perpignan Via Domitia, CEntre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, F-66860, Perpignan, France; CNRS, CEntre de Formation et de Recherche sur les Environnements Méditerranéens, UMR 5110, F-66860, Perpignan, France
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