Differential adaptations between cold-stenothermal environments in the bivalve Lissarca cf. miliaris (Philobryidae) from the Scotia Sea islands and Antarctic Peninsula
The cold stenothermal nature of the Southern Ocean, and highly adapted fauna living within, raises the question of how much intra-specific variation there is among invertebrate populations, and how variation may have a role in speciation processes through ecological divergence, natural selection, an...
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ftnerc:oai:nora.nerc.ac.uk:504463 2023-05-15T13:48:08+02:00 Differential adaptations between cold-stenothermal environments in the bivalve Lissarca cf. miliaris (Philobryidae) from the Scotia Sea islands and Antarctic Peninsula Reed, Adam J. Linse, Katrin Thatje, Sven 2014-04 text http://nora.nerc.ac.uk/id/eprint/504463/ https://nora.nerc.ac.uk/id/eprint/504463/1/1-s2.0-S1385110113002578-main.pdf https://doi.org/10.1016/j.seares.2013.12.008 en eng https://nora.nerc.ac.uk/id/eprint/504463/1/1-s2.0-S1385110113002578-main.pdf Reed, Adam J.; Linse, Katrin orcid:0000-0003-3477-3047 Thatje, Sven. 2014 Differential adaptations between cold-stenothermal environments in the bivalve Lissarca cf. miliaris (Philobryidae) from the Scotia Sea islands and Antarctic Peninsula. Journal of Sea Research, 88. 11-20. https://doi.org/10.1016/j.seares.2013.12.008 <https://doi.org/10.1016/j.seares.2013.12.008> Publication - Article PeerReviewed 2014 ftnerc https://doi.org/10.1016/j.seares.2013.12.008 2023-02-04T19:38:27Z The cold stenothermal nature of the Southern Ocean, and highly adapted fauna living within, raises the question of how much intra-specific variation there is among invertebrate populations, and how variation may have a role in speciation processes through ecological divergence, natural selection, and reproductive isolation. Despite decades of collecting biological material, this question remains largely unanswered, and many studies compare ‘populations’ of pooled material from wide geographic ranges to compensate for sampling constraints. In this study, variations in ecophysiological traits are explored by measuring growth, reproduction, and shell morphology among six populations of the small bivalve Lissarca cf. miliaris (Philippi, 1845) from the Southern Ocean, which experience subtle differences in temperature, disturbance, and food availability. There are significant differences in shell morphology and growth among different populations and slower growth rates at higher latitude populations. Prodissoconch sizes show an inverse ‘U’ shaped relationship with latitude, and are correlated with egg size at South Georgia and King George Island’s Potter Cove. Higher brood sizes at the South Georgia population represent a trade-off with lower egg size, and correlate with shell morphology by offering lower internal capacity to brood young. Lower investment into offspring and morphological variations in Lissarca cf. miliaris highlight the importance of local scale environmental variations on species’ ecology. These variations in physical traits appear to be underestimated in the Southern Ocean, but may be important drivers of ecological divergence and speciation, which should be considered in future genetic investigations on different invertebrate populations. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Scotia Sea Southern Ocean Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean Antarctic Peninsula Scotia Sea Potter Cove Journal of Sea Research 88 11 20 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
English |
description |
The cold stenothermal nature of the Southern Ocean, and highly adapted fauna living within, raises the question of how much intra-specific variation there is among invertebrate populations, and how variation may have a role in speciation processes through ecological divergence, natural selection, and reproductive isolation. Despite decades of collecting biological material, this question remains largely unanswered, and many studies compare ‘populations’ of pooled material from wide geographic ranges to compensate for sampling constraints. In this study, variations in ecophysiological traits are explored by measuring growth, reproduction, and shell morphology among six populations of the small bivalve Lissarca cf. miliaris (Philippi, 1845) from the Southern Ocean, which experience subtle differences in temperature, disturbance, and food availability. There are significant differences in shell morphology and growth among different populations and slower growth rates at higher latitude populations. Prodissoconch sizes show an inverse ‘U’ shaped relationship with latitude, and are correlated with egg size at South Georgia and King George Island’s Potter Cove. Higher brood sizes at the South Georgia population represent a trade-off with lower egg size, and correlate with shell morphology by offering lower internal capacity to brood young. Lower investment into offspring and morphological variations in Lissarca cf. miliaris highlight the importance of local scale environmental variations on species’ ecology. These variations in physical traits appear to be underestimated in the Southern Ocean, but may be important drivers of ecological divergence and speciation, which should be considered in future genetic investigations on different invertebrate populations. |
format |
Article in Journal/Newspaper |
author |
Reed, Adam J. Linse, Katrin Thatje, Sven |
spellingShingle |
Reed, Adam J. Linse, Katrin Thatje, Sven Differential adaptations between cold-stenothermal environments in the bivalve Lissarca cf. miliaris (Philobryidae) from the Scotia Sea islands and Antarctic Peninsula |
author_facet |
Reed, Adam J. Linse, Katrin Thatje, Sven |
author_sort |
Reed, Adam J. |
title |
Differential adaptations between cold-stenothermal environments in the bivalve Lissarca cf. miliaris (Philobryidae) from the Scotia Sea islands and Antarctic Peninsula |
title_short |
Differential adaptations between cold-stenothermal environments in the bivalve Lissarca cf. miliaris (Philobryidae) from the Scotia Sea islands and Antarctic Peninsula |
title_full |
Differential adaptations between cold-stenothermal environments in the bivalve Lissarca cf. miliaris (Philobryidae) from the Scotia Sea islands and Antarctic Peninsula |
title_fullStr |
Differential adaptations between cold-stenothermal environments in the bivalve Lissarca cf. miliaris (Philobryidae) from the Scotia Sea islands and Antarctic Peninsula |
title_full_unstemmed |
Differential adaptations between cold-stenothermal environments in the bivalve Lissarca cf. miliaris (Philobryidae) from the Scotia Sea islands and Antarctic Peninsula |
title_sort |
differential adaptations between cold-stenothermal environments in the bivalve lissarca cf. miliaris (philobryidae) from the scotia sea islands and antarctic peninsula |
publishDate |
2014 |
url |
http://nora.nerc.ac.uk/id/eprint/504463/ https://nora.nerc.ac.uk/id/eprint/504463/1/1-s2.0-S1385110113002578-main.pdf https://doi.org/10.1016/j.seares.2013.12.008 |
geographic |
Antarctic Southern Ocean Antarctic Peninsula Scotia Sea Potter Cove |
geographic_facet |
Antarctic Southern Ocean Antarctic Peninsula Scotia Sea Potter Cove |
genre |
Antarc* Antarctic Antarctic Peninsula Scotia Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Scotia Sea Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/504463/1/1-s2.0-S1385110113002578-main.pdf Reed, Adam J.; Linse, Katrin orcid:0000-0003-3477-3047 Thatje, Sven. 2014 Differential adaptations between cold-stenothermal environments in the bivalve Lissarca cf. miliaris (Philobryidae) from the Scotia Sea islands and Antarctic Peninsula. Journal of Sea Research, 88. 11-20. https://doi.org/10.1016/j.seares.2013.12.008 <https://doi.org/10.1016/j.seares.2013.12.008> |
op_doi |
https://doi.org/10.1016/j.seares.2013.12.008 |
container_title |
Journal of Sea Research |
container_volume |
88 |
container_start_page |
11 |
op_container_end_page |
20 |
_version_ |
1766248733598547968 |