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Caccavo JA, Christiansen H, Constable AJ, Ghigliotti L, Trebilco R, Brooks CM, Cotte C, Desvignes T, Dornan T, Jones CD, Koubbi P, Saunders RA, Strobel A, Vacchi M, van de Putte AP, Walters A, Waluda CM, Woods BL, Xavier JC. Productivity and Change in Fish and Squid in the Southern Ocean. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.624918] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Southern Ocean ecosystems are globally important and vulnerable to global drivers of change, yet they remain challenging to study. Fish and squid make up a significant portion of the biomass within the Southern Ocean, filling key roles in food webs from forage to mid-trophic species and top predators. They comprise a diverse array of species uniquely adapted to the extreme habitats of the region. Adaptations such as antifreeze glycoproteins, lipid-retention, extended larval phases, delayed senescence, and energy-conserving life strategies equip Antarctic fish and squid to withstand the dark winters and yearlong subzero temperatures experienced in much of the Southern Ocean. In addition to krill exploitation, the comparatively high commercial value of Antarctic fish, particularly the lucrative toothfish, drives fisheries interests, which has included illegal fishing. Uncertainty about the population dynamics of target species and ecosystem structure and function more broadly has necessitated a precautionary, ecosystem approach to managing these stocks and enabling the recovery of depleted species. Fisheries currently remain the major local driver of change in Southern Ocean fish productivity, but global climate change presents an even greater challenge to assessing future changes. Parts of the Southern Ocean are experiencing ocean-warming, such as the West Antarctic Peninsula, while other areas, such as the Ross Sea shelf, have undergone cooling in recent years. These trends are expected to result in a redistribution of species based on their tolerances to different temperature regimes. Climate variability may impair the migratory response of these species to environmental change, while imposing increased pressures on recruitment. Fisheries and climate change, coupled with related local and global drivers such as pollution and sea ice change, have the potential to produce synergistic impacts that compound the risks to Antarctic fish and squid species. The uncertainty surrounding how different species will respond to these challenges, given their varying life histories, environmental dependencies, and resiliencies, necessitates regular assessment to inform conservation and management decisions. Urgent attention is needed to determine whether the current management strategies are suitably precautionary to achieve conservation objectives in light of the impending changes to the ecosystem.
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Schiavon L, Dulière V, La Mesa M, Marino IAM, Codogno G, Boscari E, Riginella E, Battistotti A, Lucassen M, Zane L, Papetti C. Species distribution, hybridization and connectivity in the genus
Chionodraco
: Unveiling unknown icefish diversity in antarctica. DIVERS DISTRIB 2021. [DOI: 10.1111/ddi.13249] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Luca Schiavon
- Department of Biology University of Padova Padova Italy
| | - Valérie Dulière
- Royal Belgian Institute of Natural Sciences Brussels Belgium
| | | | - Ilaria Anna Maria Marino
- Department of Biology University of Padova Padova Italy
- Consorzio Nazionale Interuniversitario Per le Scienze del Mare (CoNISMa) Roma Italy
| | | | - Elisa Boscari
- Department of Biology University of Padova Padova Italy
- Consorzio Nazionale Interuniversitario Per le Scienze del Mare (CoNISMa) Roma Italy
| | | | | | - Magnus Lucassen
- Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research Bremerhaven Germany
| | - Lorenzo Zane
- Department of Biology University of Padova Padova Italy
- Consorzio Nazionale Interuniversitario Per le Scienze del Mare (CoNISMa) Roma Italy
| | - Chiara Papetti
- Department of Biology University of Padova Padova Italy
- Consorzio Nazionale Interuniversitario Per le Scienze del Mare (CoNISMa) Roma Italy
- Zoological Station Anton Dohrn Naples Italy
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Deli Antoni MY, Delpiani SM, González-Castro M, Blasina GE, Spath MC, Depiani GE, Ashikaga FY, Cruz VP, Oliveira C, de Astarloa JMD. Comparative populational study of Lepidonotothen larseni and L. nudifrons (Teleostei: Nototheniidae) from the Antarctic Peninsula and the South Shetland Islands, Antarctica. Polar Biol 2019. [DOI: 10.1007/s00300-019-02540-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Kašparová E, Van de Putte AP, Marshall C, Janko K. Lifestyle and Ice: The Relationship between Ecological Specialization and Response to Pleistocene Climate Change. PLoS One 2015; 10:e0138766. [PMID: 26535569 PMCID: PMC4636791 DOI: 10.1371/journal.pone.0138766] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 09/03/2015] [Indexed: 11/19/2022] Open
Abstract
Major climatic changes in the Pleistocene had significant effects on marine organisms and the environments in which they lived. The presence of divergent patterns of demographic history even among phylogenetically closely-related species sharing climatic changes raises questions as to the respective influence of species-specific traits on population structure. In this work we tested whether the lifestyle of Antarctic notothenioid benthic and pelagic fish species from the Southern Ocean influenced the concerted population response to Pleistocene climatic fluctuations. This was done by a comparative analysis of sequence variation at the cyt b and S7 loci in nine newly sequenced and four re-analysed species. We found that all species underwent more or less intensive changes in population size but we also found consistent differences between demographic histories of pelagic and benthic species. Contemporary pelagic populations are significantly more genetically diverse and bear traces of older demographic expansions than less diverse benthic species that show evidence of more recent population expansions. Our findings suggest that the lifestyles of different species have strong influences on their responses to the same environmental events. Our data, in conjunction with previous studies showing a constant diversification tempo of these species during the Pleistocene, support the hypothesis that Pleistocene glaciations had a smaller effect on pelagic species than on benthic species whose survival may have relied upon ephemeral refugia in shallow shelf waters. These findings suggest that the interaction between lifestyle and environmental changes should be considered in genetic analyses.
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Affiliation(s)
- Eva Kašparová
- Laboratory of Fish Genetics, Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Rumburska 89, 27721 Libechov, Czech Republic
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Kvetna 8, 603 65, Brno, Czech Republic
- * E-mail: (EK); (KJ)
| | - Anton P. Van de Putte
- Laboratory of Biodiversity and Evolutionary Genomics, Katholieke Universiteit Leuven, Ch. Deberiotstraat 32, B-3000 Leuven, Belgium
| | - Craig Marshall
- Department of Biochemistry, and Genetics Otago, University of Otago, P.O. Box 56, Dunedin, New Zealand
| | - Karel Janko
- Laboratory of Fish Genetics, Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Rumburska 89, 27721 Libechov, Czech Republic
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Kvetna 8, 603 65, Brno, Czech Republic
- Centre for Polar Ecology, University of South Bohemia in Ceské Budejovice, Na Zlate stoce 3, 370 05, Ceske Budejovice, Czech Republic
- Life Science Research Centre, Department of Biology and Ecology, Faculty of Natural Sciences, University of Ostrava, Chittussiho 10, 710 00 Silesian Ostrava, Czech Republic
- * E-mail: (EK); (KJ)
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5
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Life history strategies of the Scotia Sea icefish, Chaenocephalus aceratus, along the Southern Scotia Ridge. Polar Biol 2015. [DOI: 10.1007/s00300-015-1802-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Damerau M, Matschiner M, Salzburger W, Hanel R. Population divergences despite long pelagic larval stages: lessons from crocodile icefishes (Channichthyidae). Mol Ecol 2013; 23:284-99. [DOI: 10.1111/mec.12612] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 11/25/2013] [Accepted: 11/27/2013] [Indexed: 11/28/2022]
Affiliation(s)
- M. Damerau
- Thünen-Institute of Fisheries Ecology; Palmaille 9 22767 Hamburg Germany
| | - M. Matschiner
- Department of Mathematics and Statistics; Allan Wilson Centre of Molecular Ecology and Evolution; University of Canterbury; Private Bag 4800 Christchurch New Zealand
- Zoological Institute; University of Basel; Vesalgasse 1 4051 Basel Switzerland
| | - W. Salzburger
- Zoological Institute; University of Basel; Vesalgasse 1 4051 Basel Switzerland
| | - R. Hanel
- Thünen-Institute of Fisheries Ecology; Palmaille 9 22767 Hamburg Germany
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Van de Putte AP, Janko K, Kasparova E, Maes GE, Rock J, Koubbi P, Volckaert FA, Choleva L, Fraser KP, Smykla J, Van Houdt JK, Marshall C. Comparative phylogeography of three trematomid fishes reveals contrasting genetic structure patterns in benthic and pelagic species. Mar Genomics 2012. [DOI: 10.1016/j.margen.2012.05.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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MATSCHINER MICHAEL, HANEL REINHOLD, SALZBURGER WALTER. Gene flow by larval dispersal in the Antarctic notothenioid fishGobionotothen gibberifrons. Mol Ecol 2009; 18:2574-87. [DOI: 10.1111/j.1365-294x.2009.04220.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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