Reproduction of Antarctic benthic marine invertebrates : tempos, modes, and timing
Work on the life histories of common antarctic benthic marine invertebrates over the past several decades demands a revision of several widely held paradigms. First, contrary to expectations derived from work on temperate species, there is little or no evidence for temperature adaptation with respec...
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ftoceanrep:oai:oceanrep.geomar.de:35161 2023-05-15T13:48:22+02:00 Reproduction of Antarctic benthic marine invertebrates : tempos, modes, and timing Pearse, John S. McClintock, James B. Bosch, Isidro 1991 text https://oceanrep.geomar.de/id/eprint/35161/ https://oceanrep.geomar.de/id/eprint/35161/1/Pearse.pdf en eng Oxford University Press https://oceanrep.geomar.de/id/eprint/35161/1/Pearse.pdf Pearse, J. S., McClintock, J. B. and Bosch, I. (1991) Reproduction of Antarctic benthic marine invertebrates : tempos, modes, and timing. American zoologist, 31 (1). pp. 65-80. info:eu-repo/semantics/closedAccess Article PeerReviewed 1991 ftoceanrep 2023-04-07T15:29:50Z Work on the life histories of common antarctic benthic marine invertebrates over the past several decades demands a revision of several widely held paradigms. First, contrary to expectations derived from work on temperate species, there is little or no evidence for temperature adaptation with respect to reproduction (gametogenesis), devel? opment, and growth. It remains to be determined whether the slow rates of these processes reflect some inherent inability to adapt to low temperatures, or are a response to features of the antarctic marine environment not directly related to low temperature, such as low food resources. Secondly, contrary to the widely accepted opinion designated as "Thor- son's rule," pelagic development is common in many groups of shallow-water marine invertebrates. In fact in some groups, such as asteroids, pelagic development is as prevalent in McMurdo Sound, the southern-most open-water marine environment in the world, as in central California. In other taxonomic groups, especially gastropods, there does seem to be a genuine trend toward non-pelagic development from tropical to antarctic latitudes. Although this trend has been predicted by theoretical models, its underlying causes appear to be group specific rather than general. Thirdly, pelagic lecithotrophic development, often considered to be of negligible importance, occurs in many shallow-water antarctic marine macroinvertebrates. Pelagic lecithotrophy may be an adaptation to a combination of poor food conditions in antarctic waters most ofthe year and slow rates of development. Nevertheless, some of the most abundant and widespread antarctic marine invertebrates have pelagic planktotrophic larvae that take very long times to complete development to metamorphosis. These species are particularly prevalent in productive regions of shallow water (< 30 m), which are frequently disturbed by anchor ice formation, and the production of numerous pelagic planktotrophic larvae may represent a strategy for colonization. Although ... Article in Journal/Newspaper Antarc* Antarctic McMurdo Sound OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic McMurdo Sound The Antarctic |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
Work on the life histories of common antarctic benthic marine invertebrates over the past several decades demands a revision of several widely held paradigms. First, contrary to expectations derived from work on temperate species, there is little or no evidence for temperature adaptation with respect to reproduction (gametogenesis), devel? opment, and growth. It remains to be determined whether the slow rates of these processes reflect some inherent inability to adapt to low temperatures, or are a response to features of the antarctic marine environment not directly related to low temperature, such as low food resources. Secondly, contrary to the widely accepted opinion designated as "Thor- son's rule," pelagic development is common in many groups of shallow-water marine invertebrates. In fact in some groups, such as asteroids, pelagic development is as prevalent in McMurdo Sound, the southern-most open-water marine environment in the world, as in central California. In other taxonomic groups, especially gastropods, there does seem to be a genuine trend toward non-pelagic development from tropical to antarctic latitudes. Although this trend has been predicted by theoretical models, its underlying causes appear to be group specific rather than general. Thirdly, pelagic lecithotrophic development, often considered to be of negligible importance, occurs in many shallow-water antarctic marine macroinvertebrates. Pelagic lecithotrophy may be an adaptation to a combination of poor food conditions in antarctic waters most ofthe year and slow rates of development. Nevertheless, some of the most abundant and widespread antarctic marine invertebrates have pelagic planktotrophic larvae that take very long times to complete development to metamorphosis. These species are particularly prevalent in productive regions of shallow water (< 30 m), which are frequently disturbed by anchor ice formation, and the production of numerous pelagic planktotrophic larvae may represent a strategy for colonization. Although ... |
format |
Article in Journal/Newspaper |
author |
Pearse, John S. McClintock, James B. Bosch, Isidro |
spellingShingle |
Pearse, John S. McClintock, James B. Bosch, Isidro Reproduction of Antarctic benthic marine invertebrates : tempos, modes, and timing |
author_facet |
Pearse, John S. McClintock, James B. Bosch, Isidro |
author_sort |
Pearse, John S. |
title |
Reproduction of Antarctic benthic marine invertebrates : tempos, modes, and timing |
title_short |
Reproduction of Antarctic benthic marine invertebrates : tempos, modes, and timing |
title_full |
Reproduction of Antarctic benthic marine invertebrates : tempos, modes, and timing |
title_fullStr |
Reproduction of Antarctic benthic marine invertebrates : tempos, modes, and timing |
title_full_unstemmed |
Reproduction of Antarctic benthic marine invertebrates : tempos, modes, and timing |
title_sort |
reproduction of antarctic benthic marine invertebrates : tempos, modes, and timing |
publisher |
Oxford University Press |
publishDate |
1991 |
url |
https://oceanrep.geomar.de/id/eprint/35161/ https://oceanrep.geomar.de/id/eprint/35161/1/Pearse.pdf |
geographic |
Antarctic McMurdo Sound The Antarctic |
geographic_facet |
Antarctic McMurdo Sound The Antarctic |
genre |
Antarc* Antarctic McMurdo Sound |
genre_facet |
Antarc* Antarctic McMurdo Sound |
op_relation |
https://oceanrep.geomar.de/id/eprint/35161/1/Pearse.pdf Pearse, J. S., McClintock, J. B. and Bosch, I. (1991) Reproduction of Antarctic benthic marine invertebrates : tempos, modes, and timing. American zoologist, 31 (1). pp. 65-80. |
op_rights |
info:eu-repo/semantics/closedAccess |
_version_ |
1766249178131857408 |