Trophic environments influence size at metamorphosis and recruitment performance of Pacific oysters
Reproduction and recruitment of benthic invertebrates are influenced by the climate and by the ecological structure of marine ecosystems, along with local anthropogenic pressures such as eutrophication or oligotrophication. Using the Pacific oyster Crassostrea gigas as a biological model, we tested...
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Online Access: | https://archimer.ifremer.fr/doc/00454/56613/58314.pdf https://archimer.ifremer.fr/doc/00454/56613/58334.pdf https://doi.org/10.3354/meps12666 https://archimer.ifremer.fr/doc/00454/56613/ |
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ftarchimer:oai:archimer.ifremer.fr:56613 2023-09-26T15:17:24+02:00 Trophic environments influence size at metamorphosis and recruitment performance of Pacific oysters Lagarde, Franck Richard, Marion Bec, Beatrice Roques, Cecile Mortreux, Serge Bernard, Ismael Chiantella, Claude Messiaen, Gregory Nadalini, Jean-bruno Hori, Masakazu Hamaguchi, Masami Pouvreau, Stephane Roque D'Orbcastel, Emmanuelle Tremblay, Rejean 2018-08 application/pdf https://archimer.ifremer.fr/doc/00454/56613/58314.pdf https://archimer.ifremer.fr/doc/00454/56613/58334.pdf https://doi.org/10.3354/meps12666 https://archimer.ifremer.fr/doc/00454/56613/ eng eng Inter-research https://archimer.ifremer.fr/doc/00454/56613/58314.pdf https://archimer.ifremer.fr/doc/00454/56613/58334.pdf doi:10.3354/meps12666 https://archimer.ifremer.fr/doc/00454/56613/ Inter-Research 2018 · www.int-res.com info:eu-repo/semantics/openAccess restricted use Marine Ecology Progress Series (0171-8630) (Inter-research), 2018-08 , Vol. 602 , P. 135-153 Larval ecology Recruitment Prodissoconch II Crassostrea gigas Oligotrophication Cryptophytes Thau lagoon text Article info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.3354/meps12666 2023-08-29T22:51:09Z Reproduction and recruitment of benthic invertebrates are influenced by the climate and by the ecological structure of marine ecosystems, along with local anthropogenic pressures such as eutrophication or oligotrophication. Using the Pacific oyster Crassostrea gigas as a biological model, we tested the hypothesis that the variability in prodissoconch II (PII) size (i.e. size at metamorphosis) depends on ecological functioning. Settlement and recruitment were assessed at 5 sampling sites on the French Mediterranean shellfish farmed Thau lagoon during the main summer recruitment events in 3 consecutive years (2012-2014). Hydrobiological and planktonic analyses were conducted at 3 sampling sites. Our results showed that recruitment was extremely heterogeneous, ranging from 0 to 260 ± 27 SE ind. dm-2 throughout the ecosystem and was linked with variability in PII size, which ranged from 180 to 296 µm. The annual temporal pattern of PII sizes appeared to be controlled by temperature during the settlement period, whereas the spatial pattern depended on phytoplankton biomass and on the trophic functioning of the ecosystem. Smaller PII sizes were significantly correlated with the highest phytoplankton biomass, while larger PII sizes were positively correlated with mixotrophic cryptophyte abundance. We found an inverse relationship between PII size and survival after metamorphosis, showing that recruitment success was associated with smaller PII sizes. Regional climate conditions and local trophic functioning appear to be key factors in metamorphosis and consequently contribute to recruitment heterogeneity. Further studies should be performed in other ecosystems following an oligotrophication trajectory to generalize this result. Article in Journal/Newspaper Crassostrea gigas Pacific oyster Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Pacific Marine Ecology Progress Series 602 135 153 |
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 |
topic |
Larval ecology Recruitment Prodissoconch II Crassostrea gigas Oligotrophication Cryptophytes Thau lagoon |
spellingShingle |
Larval ecology Recruitment Prodissoconch II Crassostrea gigas Oligotrophication Cryptophytes Thau lagoon Lagarde, Franck Richard, Marion Bec, Beatrice Roques, Cecile Mortreux, Serge Bernard, Ismael Chiantella, Claude Messiaen, Gregory Nadalini, Jean-bruno Hori, Masakazu Hamaguchi, Masami Pouvreau, Stephane Roque D'Orbcastel, Emmanuelle Tremblay, Rejean Trophic environments influence size at metamorphosis and recruitment performance of Pacific oysters |
topic_facet |
Larval ecology Recruitment Prodissoconch II Crassostrea gigas Oligotrophication Cryptophytes Thau lagoon |
description |
Reproduction and recruitment of benthic invertebrates are influenced by the climate and by the ecological structure of marine ecosystems, along with local anthropogenic pressures such as eutrophication or oligotrophication. Using the Pacific oyster Crassostrea gigas as a biological model, we tested the hypothesis that the variability in prodissoconch II (PII) size (i.e. size at metamorphosis) depends on ecological functioning. Settlement and recruitment were assessed at 5 sampling sites on the French Mediterranean shellfish farmed Thau lagoon during the main summer recruitment events in 3 consecutive years (2012-2014). Hydrobiological and planktonic analyses were conducted at 3 sampling sites. Our results showed that recruitment was extremely heterogeneous, ranging from 0 to 260 ± 27 SE ind. dm-2 throughout the ecosystem and was linked with variability in PII size, which ranged from 180 to 296 µm. The annual temporal pattern of PII sizes appeared to be controlled by temperature during the settlement period, whereas the spatial pattern depended on phytoplankton biomass and on the trophic functioning of the ecosystem. Smaller PII sizes were significantly correlated with the highest phytoplankton biomass, while larger PII sizes were positively correlated with mixotrophic cryptophyte abundance. We found an inverse relationship between PII size and survival after metamorphosis, showing that recruitment success was associated with smaller PII sizes. Regional climate conditions and local trophic functioning appear to be key factors in metamorphosis and consequently contribute to recruitment heterogeneity. Further studies should be performed in other ecosystems following an oligotrophication trajectory to generalize this result. |
format |
Article in Journal/Newspaper |
author |
Lagarde, Franck Richard, Marion Bec, Beatrice Roques, Cecile Mortreux, Serge Bernard, Ismael Chiantella, Claude Messiaen, Gregory Nadalini, Jean-bruno Hori, Masakazu Hamaguchi, Masami Pouvreau, Stephane Roque D'Orbcastel, Emmanuelle Tremblay, Rejean |
author_facet |
Lagarde, Franck Richard, Marion Bec, Beatrice Roques, Cecile Mortreux, Serge Bernard, Ismael Chiantella, Claude Messiaen, Gregory Nadalini, Jean-bruno Hori, Masakazu Hamaguchi, Masami Pouvreau, Stephane Roque D'Orbcastel, Emmanuelle Tremblay, Rejean |
author_sort |
Lagarde, Franck |
title |
Trophic environments influence size at metamorphosis and recruitment performance of Pacific oysters |
title_short |
Trophic environments influence size at metamorphosis and recruitment performance of Pacific oysters |
title_full |
Trophic environments influence size at metamorphosis and recruitment performance of Pacific oysters |
title_fullStr |
Trophic environments influence size at metamorphosis and recruitment performance of Pacific oysters |
title_full_unstemmed |
Trophic environments influence size at metamorphosis and recruitment performance of Pacific oysters |
title_sort |
trophic environments influence size at metamorphosis and recruitment performance of pacific oysters |
publisher |
Inter-research |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00454/56613/58314.pdf https://archimer.ifremer.fr/doc/00454/56613/58334.pdf https://doi.org/10.3354/meps12666 https://archimer.ifremer.fr/doc/00454/56613/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
Marine Ecology Progress Series (0171-8630) (Inter-research), 2018-08 , Vol. 602 , P. 135-153 |
op_relation |
https://archimer.ifremer.fr/doc/00454/56613/58314.pdf https://archimer.ifremer.fr/doc/00454/56613/58334.pdf doi:10.3354/meps12666 https://archimer.ifremer.fr/doc/00454/56613/ |
op_rights |
Inter-Research 2018 · www.int-res.com info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.3354/meps12666 |
container_title |
Marine Ecology Progress Series |
container_volume |
602 |
container_start_page |
135 |
op_container_end_page |
153 |
_version_ |
1778138863643918336 |