Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge
Bythograea laubieri, B. vrijenhoeki and alvinellid polychaetes dominate the vent fauna of the Pacific-Antarctic Ridge. We studied gonadal development in females of both crabs. They have ovary microstructures characteristic of brachyuran decapods. The ovaries are paired organs overlying the hepatopan...
Published in: | Marine Ecology Progress Series |
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2009
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Online Access: | https://eprints.soton.ac.uk/65948/ http://www.int-res.com/articles/meps2009/378/m378p153.pdf |
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ftsouthampton:oai:eprints.soton.ac.uk:65948 2023-07-30T03:59:15+02:00 Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge Hilário, Ana Vilar, Sara Cunha, Marina R. Tyler, Paul 2009-03-12 https://eprints.soton.ac.uk/65948/ http://www.int-res.com/articles/meps2009/378/m378p153.pdf unknown Hilário, Ana, Vilar, Sara, Cunha, Marina R. and Tyler, Paul (2009) Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge. Marine Ecology Progress Series, 378, 153-160. (doi:10.3354/meps07858 <http://dx.doi.org/10.3354/meps07858>). Article PeerReviewed 2009 ftsouthampton https://doi.org/10.3354/meps07858 2023-07-09T21:05:03Z Bythograea laubieri, B. vrijenhoeki and alvinellid polychaetes dominate the vent fauna of the Pacific-Antarctic Ridge. We studied gonadal development in females of both crabs. They have ovary microstructures characteristic of brachyuran decapods. The ovaries are paired organs overlying the hepatopancreas beneath the carapace. Oogonia proliferate from the germinal epithelium and develop into previtellogenic oocytes that grow to 60 Mm before undergoing vitellogenesis. The observed maximum sizes of mature oocytes were 209 Mm in B. laubieri and 138 Mm in B. vrijenhoeki. No ovigerous females were found in the samples, which agrees with the segregation behaviour of ovigerous females away from the direct influence of the active chimney in some related species. In contrast to other species of bythograeid crabs, the oocyte size-frequency data suggest that B. laubieri and B. vrijenhoeki lack synchrony in reproduction of the population as a whole. Synchrony and seasonality in reproduction of B. thermydron have been linked to the formation of phytoplankton blooms in surface waters. We suggest that the biogeography of bythograeid crabs is determined by contrasting oceanographic regimes that influence the reproductive patterns observed in different species. Article in Journal/Newspaper Antarc* Antarctic University of Southampton: e-Prints Soton Antarctic Pacific Marine Ecology Progress Series 378 153 160 |
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Open Polar |
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University of Southampton: e-Prints Soton |
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ftsouthampton |
language |
unknown |
description |
Bythograea laubieri, B. vrijenhoeki and alvinellid polychaetes dominate the vent fauna of the Pacific-Antarctic Ridge. We studied gonadal development in females of both crabs. They have ovary microstructures characteristic of brachyuran decapods. The ovaries are paired organs overlying the hepatopancreas beneath the carapace. Oogonia proliferate from the germinal epithelium and develop into previtellogenic oocytes that grow to 60 Mm before undergoing vitellogenesis. The observed maximum sizes of mature oocytes were 209 Mm in B. laubieri and 138 Mm in B. vrijenhoeki. No ovigerous females were found in the samples, which agrees with the segregation behaviour of ovigerous females away from the direct influence of the active chimney in some related species. In contrast to other species of bythograeid crabs, the oocyte size-frequency data suggest that B. laubieri and B. vrijenhoeki lack synchrony in reproduction of the population as a whole. Synchrony and seasonality in reproduction of B. thermydron have been linked to the formation of phytoplankton blooms in surface waters. We suggest that the biogeography of bythograeid crabs is determined by contrasting oceanographic regimes that influence the reproductive patterns observed in different species. |
format |
Article in Journal/Newspaper |
author |
Hilário, Ana Vilar, Sara Cunha, Marina R. Tyler, Paul |
spellingShingle |
Hilário, Ana Vilar, Sara Cunha, Marina R. Tyler, Paul Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge |
author_facet |
Hilário, Ana Vilar, Sara Cunha, Marina R. Tyler, Paul |
author_sort |
Hilário, Ana |
title |
Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge |
title_short |
Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge |
title_full |
Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge |
title_fullStr |
Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge |
title_full_unstemmed |
Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge |
title_sort |
reproductive aspects of two bythograeid crab species from hydrothermal vents in the pacific-antarctic ridge |
publishDate |
2009 |
url |
https://eprints.soton.ac.uk/65948/ http://www.int-res.com/articles/meps2009/378/m378p153.pdf |
geographic |
Antarctic Pacific |
geographic_facet |
Antarctic Pacific |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Hilário, Ana, Vilar, Sara, Cunha, Marina R. and Tyler, Paul (2009) Reproductive aspects of two bythograeid crab species from hydrothermal vents in the Pacific-Antarctic Ridge. Marine Ecology Progress Series, 378, 153-160. (doi:10.3354/meps07858 <http://dx.doi.org/10.3354/meps07858>). |
op_doi |
https://doi.org/10.3354/meps07858 |
container_title |
Marine Ecology Progress Series |
container_volume |
378 |
container_start_page |
153 |
op_container_end_page |
160 |
_version_ |
1772809988254728192 |