Protracted oogenesis and annual reproductive periodicity in the deep‐sea pennatulacean Halipteris finmarchica (Anthozoa, Octocorallia)
Abstract Halipteris finmarchica is one of the most common species of deep‐sea pennatulacean corals in the Northwest Atlantic; it was recently determined to act as a biogenic substrate for other species and as a nursery for fish larvae. Its reproductive cycle was investigated in colonies sampled in 2...
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crwiley:10.1111/maec.12236 2024-04-28T08:11:52+00:00 Protracted oogenesis and annual reproductive periodicity in the deep‐sea pennatulacean Halipteris finmarchica (Anthozoa, Octocorallia) Baillon, Sandrine Hamel, Jean‐François Mercier, Annie Natural Sciences and Engineering Research Council of Canada 2014 http://dx.doi.org/10.1111/maec.12236 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmaec.12236 https://onlinelibrary.wiley.com/doi/pdf/10.1111/maec.12236 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Marine Ecology volume 36, issue 4, page 1364-1378 ISSN 0173-9565 1439-0485 Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2014 crwiley https://doi.org/10.1111/maec.12236 2024-04-08T06:53:29Z Abstract Halipteris finmarchica is one of the most common species of deep‐sea pennatulacean corals in the Northwest Atlantic; it was recently determined to act as a biogenic substrate for other species and as a nursery for fish larvae. Its reproductive cycle was investigated in colonies sampled in 2006 and 2007 along the continental slope of Newfoundland and Labrador (Canada). Halipteris finmarchica exhibits large oocytes (maximum diameter of 1000 μm), which are consistent with lecithotrophic larval development. Female potential fecundity based on mature oocytes just before spawning was ~6 oocytes · polyp −1 (500–6300 oocytes · colony −1 ); male potential fecundity was 16 spermatocysts · polyp −1 (5500–57,400 spermatocysts · colony −1 ). Based on statistical analysis of size‐probability frequency distributions, males harboured one cohort of spermatocysts that matured inside 8–11 months, whereas females harboured two distinct cohorts of oocytes; a persistent pool of small ones (≤400 μm) and a small number (~20%) of larger ones that grew from ~400 to >800 μm over a year. Despite this difference in the tempo of oogenesis and spermatogenesis, a synchronic annual spawning was detected. A latitudinal shift in the spawning period occurred from south (April in the Laurentian Channel) to north (May in Grand Banks and July–August in Labrador/Lower Arctic), following the development of the phytoplankton bloom ( i.e . sinking of phytodetritus). Prolonged oogenesis with the simultaneous presence of different oocyte classes in a given polyp is likely not uncommon in deep‐sea octocorals and could hamper the detection of annual/seasonal reproduction when sample sizes are low and/or time series discontinued or brief. Article in Journal/Newspaper Arctic Newfoundland Northwest Atlantic Phytoplankton Wiley Online Library Marine Ecology 36 4 1364 1378 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics Baillon, Sandrine Hamel, Jean‐François Mercier, Annie Protracted oogenesis and annual reproductive periodicity in the deep‐sea pennatulacean Halipteris finmarchica (Anthozoa, Octocorallia) |
topic_facet |
Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Abstract Halipteris finmarchica is one of the most common species of deep‐sea pennatulacean corals in the Northwest Atlantic; it was recently determined to act as a biogenic substrate for other species and as a nursery for fish larvae. Its reproductive cycle was investigated in colonies sampled in 2006 and 2007 along the continental slope of Newfoundland and Labrador (Canada). Halipteris finmarchica exhibits large oocytes (maximum diameter of 1000 μm), which are consistent with lecithotrophic larval development. Female potential fecundity based on mature oocytes just before spawning was ~6 oocytes · polyp −1 (500–6300 oocytes · colony −1 ); male potential fecundity was 16 spermatocysts · polyp −1 (5500–57,400 spermatocysts · colony −1 ). Based on statistical analysis of size‐probability frequency distributions, males harboured one cohort of spermatocysts that matured inside 8–11 months, whereas females harboured two distinct cohorts of oocytes; a persistent pool of small ones (≤400 μm) and a small number (~20%) of larger ones that grew from ~400 to >800 μm over a year. Despite this difference in the tempo of oogenesis and spermatogenesis, a synchronic annual spawning was detected. A latitudinal shift in the spawning period occurred from south (April in the Laurentian Channel) to north (May in Grand Banks and July–August in Labrador/Lower Arctic), following the development of the phytoplankton bloom ( i.e . sinking of phytodetritus). Prolonged oogenesis with the simultaneous presence of different oocyte classes in a given polyp is likely not uncommon in deep‐sea octocorals and could hamper the detection of annual/seasonal reproduction when sample sizes are low and/or time series discontinued or brief. |
author2 |
Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Baillon, Sandrine Hamel, Jean‐François Mercier, Annie |
author_facet |
Baillon, Sandrine Hamel, Jean‐François Mercier, Annie |
author_sort |
Baillon, Sandrine |
title |
Protracted oogenesis and annual reproductive periodicity in the deep‐sea pennatulacean Halipteris finmarchica (Anthozoa, Octocorallia) |
title_short |
Protracted oogenesis and annual reproductive periodicity in the deep‐sea pennatulacean Halipteris finmarchica (Anthozoa, Octocorallia) |
title_full |
Protracted oogenesis and annual reproductive periodicity in the deep‐sea pennatulacean Halipteris finmarchica (Anthozoa, Octocorallia) |
title_fullStr |
Protracted oogenesis and annual reproductive periodicity in the deep‐sea pennatulacean Halipteris finmarchica (Anthozoa, Octocorallia) |
title_full_unstemmed |
Protracted oogenesis and annual reproductive periodicity in the deep‐sea pennatulacean Halipteris finmarchica (Anthozoa, Octocorallia) |
title_sort |
protracted oogenesis and annual reproductive periodicity in the deep‐sea pennatulacean halipteris finmarchica (anthozoa, octocorallia) |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1111/maec.12236 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmaec.12236 https://onlinelibrary.wiley.com/doi/pdf/10.1111/maec.12236 |
genre |
Arctic Newfoundland Northwest Atlantic Phytoplankton |
genre_facet |
Arctic Newfoundland Northwest Atlantic Phytoplankton |
op_source |
Marine Ecology volume 36, issue 4, page 1364-1378 ISSN 0173-9565 1439-0485 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/maec.12236 |
container_title |
Marine Ecology |
container_volume |
36 |
container_issue |
4 |
container_start_page |
1364 |
op_container_end_page |
1378 |
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1797579038484594688 |