Reproductive seasonality in the comatulid crinoid Antedon bifida(Pennant) from the English Channel
Genital pinnules from the north east Atlantic comatulid crinoid Antedon bifida (Pennant) were sampled monthly over a five-season period , from a site at Berry Head , English Channel, U .K . A. bifida uniquely broods its spawned ova and early larvae, during the period May to July . Nevertheless, a hi...
Published in: | Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences |
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Format: | Article in Journal/Newspaper |
Language: | English |
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1994
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Online Access: | http://dx.doi.org/10.1098/rstb.1994.0015 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1994.0015 |
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crroyalsociety:10.1098/rstb.1994.0015 2024-06-02T08:11:47+00:00 Reproductive seasonality in the comatulid crinoid Antedon bifida(Pennant) from the English Channel 1994 http://dx.doi.org/10.1098/rstb.1994.0015 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1994.0015 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences volume 343, issue 1304, page 113-134 ISSN 0962-8436 1471-2970 journal-article 1994 crroyalsociety https://doi.org/10.1098/rstb.1994.0015 2024-05-07T14:16:34Z Genital pinnules from the north east Atlantic comatulid crinoid Antedon bifida (Pennant) were sampled monthly over a five-season period , from a site at Berry Head , English Channel, U .K . A. bifida uniquely broods its spawned ova and early larvae, during the period May to July . Nevertheless, a high level of sexual maturity was maintained throughout the annual cycle in both males and females. Three cellular gametogenic features: facets on the mature oocyte cell wall, nutritive phagocytes in the gonad lumen and yolk nuclei in the pre-vitellogenic oocytes, were present at all times of the seasonal cycle. Development of gonads along the length of an arm was not synchronous. All specimens sampled had pinnules, sections of arm or whole arms missing, an damean of 17% of all pinnules from the population were missing or regenerating The commonest small fish in the area, Crenilabrus was observed to nibble oil the genital pinnules. A strategy is suggested involving toleration of such losses, in place of less-expendable parts of the body. Article in Journal/Newspaper North East Atlantic The Royal Society Berry Head ENVELOPE(-45.602,-45.602,-60.684,-60.684) Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 343 1304 113 134 |
institution |
Open Polar |
collection |
The Royal Society |
op_collection_id |
crroyalsociety |
language |
English |
description |
Genital pinnules from the north east Atlantic comatulid crinoid Antedon bifida (Pennant) were sampled monthly over a five-season period , from a site at Berry Head , English Channel, U .K . A. bifida uniquely broods its spawned ova and early larvae, during the period May to July . Nevertheless, a high level of sexual maturity was maintained throughout the annual cycle in both males and females. Three cellular gametogenic features: facets on the mature oocyte cell wall, nutritive phagocytes in the gonad lumen and yolk nuclei in the pre-vitellogenic oocytes, were present at all times of the seasonal cycle. Development of gonads along the length of an arm was not synchronous. All specimens sampled had pinnules, sections of arm or whole arms missing, an damean of 17% of all pinnules from the population were missing or regenerating The commonest small fish in the area, Crenilabrus was observed to nibble oil the genital pinnules. A strategy is suggested involving toleration of such losses, in place of less-expendable parts of the body. |
format |
Article in Journal/Newspaper |
title |
Reproductive seasonality in the comatulid crinoid Antedon bifida(Pennant) from the English Channel |
spellingShingle |
Reproductive seasonality in the comatulid crinoid Antedon bifida(Pennant) from the English Channel |
title_short |
Reproductive seasonality in the comatulid crinoid Antedon bifida(Pennant) from the English Channel |
title_full |
Reproductive seasonality in the comatulid crinoid Antedon bifida(Pennant) from the English Channel |
title_fullStr |
Reproductive seasonality in the comatulid crinoid Antedon bifida(Pennant) from the English Channel |
title_full_unstemmed |
Reproductive seasonality in the comatulid crinoid Antedon bifida(Pennant) from the English Channel |
title_sort |
reproductive seasonality in the comatulid crinoid antedon bifida(pennant) from the english channel |
publisher |
The Royal Society |
publishDate |
1994 |
url |
http://dx.doi.org/10.1098/rstb.1994.0015 https://royalsocietypublishing.org/doi/pdf/10.1098/rstb.1994.0015 |
long_lat |
ENVELOPE(-45.602,-45.602,-60.684,-60.684) |
geographic |
Berry Head |
geographic_facet |
Berry Head |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences volume 343, issue 1304, page 113-134 ISSN 0962-8436 1471-2970 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rstb.1994.0015 |
container_title |
Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences |
container_volume |
343 |
container_issue |
1304 |
container_start_page |
113 |
op_container_end_page |
134 |
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1800758044151250944 |