Evidence for a sacrificial response to predation in the reproductive strategy of the comatulid crinoid Antedon bifida from the English Channel
A population of the North-East Atlantic feather star Antedon bifida (Pennant) from a site in strong currents off South Devon, U.K., maintains a high level of maturity throughout its annual cycle, yet spawns only at a precise period of the year. Most individuals lose a proportion (mean: 17 %) of thei...
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ftarchimer:oai:archimer.ifremer.fr:20482 2023-05-15T17:38:26+02:00 Evidence for a sacrificial response to predation in the reproductive strategy of the comatulid crinoid Antedon bifida from the English Channel Nichols, D 1996 application/pdf https://archimer.ifremer.fr/doc/00094/20482/18152.pdf https://archimer.ifremer.fr/doc/00094/20482/ eng eng Gauthier-Villars https://archimer.ifremer.fr/doc/00094/20482/18152.pdf https://archimer.ifremer.fr/doc/00094/20482/ info:eu-repo/semantics/openAccess restricted use Oceanologica Acta (0399-1784) (Gauthier-Villars), 1996 , Vol. 19 , N. 3-4 , P. 237-240 text Publication info:eu-repo/semantics/article 1996 ftarchimer 2021-09-23T20:21:13Z A population of the North-East Atlantic feather star Antedon bifida (Pennant) from a site in strong currents off South Devon, U.K., maintains a high level of maturity throughout its annual cycle, yet spawns only at a precise period of the year. Most individuals lose a proportion (mean: 17 %) of their pinnules from predation by the corkwing wrasse, Crenilabrus melops. An account of some aspects of predation of the crinoid by the fish is given. It is suggested that the crinoid maintains the maturity of its reproductive tissues at an unusually high level throughout the year so that the predator will take the pinnules, including the energy-rich gonads, in preference to the more vulnerable calyx. It is also suggested that a stress-response may be involved in the maintenance of continuous gametogenic activity by the crinoid, and, further, that attracting the predatory fish,to itself may help rid the crinoid's exterior of epizoics. Article in Journal/Newspaper North East Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
A population of the North-East Atlantic feather star Antedon bifida (Pennant) from a site in strong currents off South Devon, U.K., maintains a high level of maturity throughout its annual cycle, yet spawns only at a precise period of the year. Most individuals lose a proportion (mean: 17 %) of their pinnules from predation by the corkwing wrasse, Crenilabrus melops. An account of some aspects of predation of the crinoid by the fish is given. It is suggested that the crinoid maintains the maturity of its reproductive tissues at an unusually high level throughout the year so that the predator will take the pinnules, including the energy-rich gonads, in preference to the more vulnerable calyx. It is also suggested that a stress-response may be involved in the maintenance of continuous gametogenic activity by the crinoid, and, further, that attracting the predatory fish,to itself may help rid the crinoid's exterior of epizoics. |
format |
Article in Journal/Newspaper |
author |
Nichols, D |
spellingShingle |
Nichols, D Evidence for a sacrificial response to predation in the reproductive strategy of the comatulid crinoid Antedon bifida from the English Channel |
author_facet |
Nichols, D |
author_sort |
Nichols, D |
title |
Evidence for a sacrificial response to predation in the reproductive strategy of the comatulid crinoid Antedon bifida from the English Channel |
title_short |
Evidence for a sacrificial response to predation in the reproductive strategy of the comatulid crinoid Antedon bifida from the English Channel |
title_full |
Evidence for a sacrificial response to predation in the reproductive strategy of the comatulid crinoid Antedon bifida from the English Channel |
title_fullStr |
Evidence for a sacrificial response to predation in the reproductive strategy of the comatulid crinoid Antedon bifida from the English Channel |
title_full_unstemmed |
Evidence for a sacrificial response to predation in the reproductive strategy of the comatulid crinoid Antedon bifida from the English Channel |
title_sort |
evidence for a sacrificial response to predation in the reproductive strategy of the comatulid crinoid antedon bifida from the english channel |
publisher |
Gauthier-Villars |
publishDate |
1996 |
url |
https://archimer.ifremer.fr/doc/00094/20482/18152.pdf https://archimer.ifremer.fr/doc/00094/20482/ |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Oceanologica Acta (0399-1784) (Gauthier-Villars), 1996 , Vol. 19 , N. 3-4 , P. 237-240 |
op_relation |
https://archimer.ifremer.fr/doc/00094/20482/18152.pdf https://archimer.ifremer.fr/doc/00094/20482/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
_version_ |
1766138867623133184 |