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Bertram A, Fairclough D, Sandoval‐Castillo J, Brauer C, Fowler A, Wellenreuther M, Beheregaray LB. Fisheries genomics of snapper (
Chrysophrys auratus
) along the west Australian coast. Evol Appl 2022; 15:1099-1114. [PMID: 35899251 PMCID: PMC9309437 DOI: 10.1111/eva.13439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 06/15/2022] [Accepted: 06/16/2022] [Indexed: 11/28/2022] Open
Abstract
The efficacy of fisheries management strategies depends on stock assessment and management actions being carried out at appropriate spatial scales. This requires understanding of spatial and temporal population structure and connectivity, which is challenging in weakly structured and highly connected marine populations. We carried out a population genomics study of the heavily exploited snapper (Chrysophrys auratus) along ~2600 km of the Australian coastline, with a focus on Western Australia (WA). We used 10,903 filtered SNPs in 341 individuals from eight sampling locations to characterize population structure and connectivity in snapper across WA and to assess if current spatial scales of stock assessment and management agree with evidence from population genomics. Our dataset also enabled us to investigate temporal stability in population structure as well as connectivity between WA and its nearest, eastern jurisdictional neighbour. As expected for a species influenced by the extensive ocean boundary current in the region, low genetic differentiation and high connectivity were uncovered across WA. However, we did detect strong isolation by distance and genetic discontinuities in the mid‐west and south‐east. The discontinuities correlate with boundaries between biogeographic regions, influenced by on‐shelf oceanography, and the sites of important spawning aggregations. We also detected temporal instability in genetic structure at one of our sites, possibly due to interannual variability in recruitment in adjacent regions. Our results partly contrast with the current spatial management of snapper in WA, indicating the likely benefits of a review. This study supports the value of population genomic surveys in informing the management of weakly structured and wide‐ranging marine fishery resources.
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Affiliation(s)
- Andrea Bertram
- Molecular Ecology Laboratory, College of Science and Engineering Flinders University Bedford Park SA Australia
| | - David Fairclough
- Aquatic Sciences and Assessment, Department of Primary Industries and Regional Development, Hillarys WA Australia
| | - Jonathan Sandoval‐Castillo
- Molecular Ecology Laboratory, College of Science and Engineering Flinders University Bedford Park SA Australia
| | - Chris Brauer
- Molecular Ecology Laboratory, College of Science and Engineering Flinders University Bedford Park SA Australia
| | - Anthony Fowler
- Aquatic Sciences South Australian Research and Development Institute SA Australia
| | - Maren Wellenreuther
- The New Zealand Institute for Plant and Food Research Limited Nelson New Zealand
- The School of Biological Sciences University of Auckland Auckland New Zealand
| | - Luciano B. Beheregaray
- Molecular Ecology Laboratory, College of Science and Engineering Flinders University Bedford Park SA Australia
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2
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Swadling DS, Knott NA, Taylor MD, Coleman MA, Davis AR, Rees MJ. Seascape connectivity of temperate fishes between estuarine nursery areas and open coastal reefs. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14157] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel S. Swadling
- School of Earth, Atmospheric and Life Sciences University of Wollongong NSW 2522 Australia
- Port Stephens Fisheries Institute New South Wales Department of Primary Industries, Taylors Beach, NSW 2316 Australia
| | - Nathan A. Knott
- Fisheries Research, NSW Department of Primary Industries, Huskisson NSW 2540 Australia
| | - Matthew D. Taylor
- Port Stephens Fisheries Institute New South Wales Department of Primary Industries, Taylors Beach, NSW 2316 Australia
| | - Melinda A. Coleman
- Fisheries Research, NSW Department of Primary Industries, National Marine Science Centre Coffs Harbour, NSW 2450 Australia
| | - Andrew R. Davis
- School of Earth, Atmospheric and Life Sciences University of Wollongong NSW 2522 Australia
| | - Matthew J. Rees
- Fisheries Research, NSW Department of Primary Industries, Huskisson NSW 2540 Australia
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3
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Cecino G, Treml EA. Local connections and the larval competency strongly influence marine metapopulation persistence. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2021; 31:e02302. [PMID: 33565673 PMCID: PMC8244011 DOI: 10.1002/eap.2302] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 09/02/2020] [Accepted: 10/05/2020] [Indexed: 05/21/2023]
Abstract
The relationship between metapopulation stability and connectivity has long been investigated in ecology, however, most of these studies are focused on theoretical species and habitat networks, having limited ability to capture the complexity of real-world metapopulations. Network analysis became more important in modeling connectivity, but it is still uncertain which network metrics are reliable predictors of persistence. Here we quantify the impact of connectivity and larval life history on marine metapopulation persistence across the complex seascape of southeast Australia. Our work coupled network-based approaches and eigenanalysis to efficiently estimate metapopulation-wide persistence and the subpopulation contributions. Larval dispersal models were used to quantify species-specific metapopulation connectivity for five important fisheries species, each summarized as a migration matrix. Eigenanalysis helped to reveal metapopulation persistence and determine the importance of node-level network properties. Across metapopulations, the number of local outgoing connections was found to have the largest impact on metapopulation persistence, implying these hub subpopulations may be the most influential in real-world metapopulations. Results also suggest the length of the pre-competency period may be the most influential parameter on metapopulation persistence. Finally, we identified two major hot spots of local connectivity in southeast Australia, each contributing strongly to multispecies persistence. Managers and ecologists would benefit by employing similar approaches in making more efficient and more ecologically informed decisions and focusing more on local connectivity patterns and larval competency characteristics to better understand and protect real-world metapopulation persistence. Practically this could mean developing more marine protected areas at shorter distances and supporting collaborative research into the early life histories of the species of interest.
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Affiliation(s)
- Giorgia Cecino
- School of BioSciencesUniversity of MelbourneParkvilleVictoria3010Australia
| | - Eric A. Treml
- School of BioSciencesUniversity of MelbourneParkvilleVictoria3010Australia
- School of Life and Environmental SciencesCentre for Integrative EcologyDeakin UniversityWaurn PondsVictoria3216Australia
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4
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Wolfe BW, Fitzgibbon QP, Semmens JM, Tracey SR, Pecl GT. Physiological mechanisms linking cold acclimation and the poleward distribution limit of a range-extending marine fish. CONSERVATION PHYSIOLOGY 2020; 8:coaa045. [PMID: 32494362 PMCID: PMC7248536 DOI: 10.1093/conphys/coaa045] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 03/18/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
Extensions of species' geographical distributions, or range extensions, are among the primary ecological responses to climate change in the oceans. Considerable variation across the rates at which species' ranges change with temperature hinders our ability to forecast range extensions based on climate data alone. To better manage the consequences of ongoing and future range extensions for global marine biodiversity, more information is needed on the biological mechanisms that link temperatures to range limits. This is especially important at understudied, low relative temperatures relevant to poleward range extensions, which appear to outpace warm range edge contractions four times over. Here, we capitalized on the ongoing range extension of a teleost predator, the Australasian snapper Chrysophrys auratus, to examine multiple measures of ecologically relevant physiological performance at the population's poleward range extension front. Swim tunnel respirometry was used to determine how mid-range and poleward range edge winter acclimation temperatures affect metabolic rate, aerobic scope, swimming performance and efficiency and recovery from exercise. Relative to 'optimal' mid-range temperature acclimation, subsequent range edge minimum temperature acclimation resulted in absolute aerobic scope decreasing while factorial aerobic scope increased; efficiency of swimming increased while maximum sustainable swimming speed decreased; and recovery from exercise required a longer duration despite lower oxygen payback. Cold-acclimated swimming faster than 0.9 body lengths sec-1 required a greater proportion of aerobic scope despite decreased cost of transport. Reduced aerobic scope did not account for declines in recovery and lower maximum sustainable swimming speed. These results suggest that while performances decline at range edge minimum temperatures, cold-acclimated snapper are optimized for energy savings and range edge limitation may arise from suboptimal temperature exposure throughout the year rather than acute minimum temperature exposure. We propose incorporating performance data with in situ behaviour and environmental data in bioenergetic models to better understand how thermal tolerance determines range limits.
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Affiliation(s)
- Barrett W Wolfe
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Quinn P Fitzgibbon
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Jayson M Semmens
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Sean R Tracey
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Gretta T Pecl
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania 7001, Australia
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5
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Starrs D, Ebner BC, Fulton CJ. All in the ears: unlocking the early life history biology and spatial ecology of fishes. Biol Rev Camb Philos Soc 2014; 91:86-105. [DOI: 10.1111/brv.12162] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Revised: 10/16/2014] [Accepted: 10/22/2014] [Indexed: 11/28/2022]
Affiliation(s)
- Danswell Starrs
- Evolution, Ecology and Genetics; Research School of Biology, Australian National University; Canberra Australian Capital Territory 0200 Australia
| | - Brendan C. Ebner
- CSIRO Ecosystem Sciences; Atherton Queensland 4883 Australia
- TropWATER, James Cook University; Townsville Queensland 4811 Australia
| | - Christopher J. Fulton
- Evolution, Ecology and Genetics; Research School of Biology, Australian National University; Canberra Australian Capital Territory 0200 Australia
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Cook GS, Parnell PE, Levin LA. Population connectivity shifts at high frequency within an open-coast marine protected area network. PLoS One 2014; 9:e103654. [PMID: 25077486 PMCID: PMC4117510 DOI: 10.1371/journal.pone.0103654] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 07/04/2014] [Indexed: 11/21/2022] Open
Abstract
A complete understanding of population connectivity via larval dispersal is of great value to the effective design and management of marine protected areas (MPA). However empirical estimates of larval dispersal distance, self-recruitment, and within season variability of population connectivity patterns and their influence on metapopulation structure remain rare. We used high-resolution otolith microchemistry data from the temperate reef fish Hypsypops rubicundus to explore biweekly, seasonal, and annual connectivity patterns in an open-coast MPA network. The three MPAs, spanning 46 km along the southern California coastline were connected by larval dispersal, but the magnitude and direction of connections reversed between 2008 and 2009. Self-recruitment, i.e. spawning, dispersal, and settlement to the same location, was observed at two locations, one of which is a MPA. Self-recruitment to this MPA ranged from 50–84%; within the entire 60 km study region, self-recruitment accounted for 45% of all individuals settling to study reefs. On biweekly time scales we observed directional variability in alongshore current data and larval dispersal trajectories; if viewed in isolation these data suggest the system behaves as a source-sink metapopulation. However aggregate biweekly data over two years reveal a reef network in which H. rubicundus behaves more like a well-mixed metapopulation. As one of the few empirical studies of population connectivity within a temperate open coast reef network, this work can inform the MPA design process, implementation of ecosystem based management plans, and facilitate conservation decisions.
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Affiliation(s)
- Geoffrey S. Cook
- Cooperative Institute for Marine and Atmospheric Studies, Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, United States of America
- Atlantic Oceanographic and Meteorological Laboratory, National Oceanographic and Atmospheric Administration, Miami, FL, United States of America
- * E-mail:
| | - P. Ed Parnell
- Integrative Oceanography Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States of America
| | - Lisa A. Levin
- Integrative Oceanography Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, United States of America
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Variability in size-selective mortality obscures the importance of larval traits to recruitment success in a temperate marine fish. Oecologia 2014; 175:1201-10. [DOI: 10.1007/s00442-014-2968-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 05/06/2014] [Indexed: 10/25/2022]
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8
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Correia AT, Gomes P, Gonçalves JMS, Erzini K, Hamer PA. Population structure of the black seabream Spondyliosoma cantharus along the south-west Portuguese coast inferred from otolith chemistry. JOURNAL OF FISH BIOLOGY 2012; 80:427-443. [PMID: 22268439 DOI: 10.1111/j.1095-8649.2011.03186.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The chemistry of black seabream Spondyliosoma cantharus otoliths from three main fishery grounds (Olhão, Sagres and Sesimbra) located along c. 400 km of the Portuguese south and west coasts was examined. Element:Ca ratios were determined in whole otoliths and otolith cores of young adult specimens of 2-3 years of age. Using the data from whole otoliths, it was possible to discriminate among S. cantharus from the three fishing grounds with an average accuracy of 91%. Differences among fishing grounds were significant for all element:Ca ratios, and otoliths from Sagres had significantly higher levels of all ratios compared to the other fishing grounds. In contrast, the chemical composition of the otolith core, representative of the larval stage, showed limited variation among the fishing grounds, with an average discrimination accuracy of only 44%, although the Mg:Ca ratio of the otolith cores was also significantly higher for the Sagres samples. The data suggest that larval stages experienced a homogenous environment consistent with an offshore oceanic spawning. Juveniles appeared to display local residency on the inshore fishing grounds, areas probably characterized by greater environmental heterogeneity. Spondyliosoma cantharus population structure is consistent with distinct local population units that share a spawning ground providing recruits to different coastal fishery areas.
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Affiliation(s)
- A T Correia
- Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas 289, 4050-123 Porto, Portugal.
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