Farmed bivalve loss due to seabream predation in the French Mediterranean Prevost Lagoon
Bivalve predation by seabream has been observed worldwide and is a major concern for bivalve farmers. Farmed bivalve-seabream interactions must be better understood to ensure the sustainability of bivalve aquaculture. The objectives of this study were to characterize gilthead seabream Sparus aurata...
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Inter-Research Science Center
2020
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fttriple:oai:gotriple.eu:10670/1.lyov7x 2023-05-15T15:59:00+02:00 Farmed bivalve loss due to seabream predation in the French Mediterranean Prevost Lagoon Richard, Marion Forget, Fabien Mignucci, Alexandre Mortreux, Serge Le Gall, Patrik Callier, Myriam Weise, Am Mckindsey, Cw Bourjea, Jerome 2020-01-01 https://doi.org/10.3354/aei00383 https://archimer.ifremer.fr/doc/00663/77515/79299.pdf https://archimer.ifremer.fr/doc/00663/77515/79301.pdf https://archimer.ifremer.fr/doc/00663/77515/ en eng Inter-Research Science Center doi:10.3354/aei00383 10670/1.lyov7x https://archimer.ifremer.fr/doc/00663/77515/79299.pdf https://archimer.ifremer.fr/doc/00663/77515/79301.pdf https://archimer.ifremer.fr/doc/00663/77515/ other Archimer, archive institutionnelle de l'Ifremer Aquaculture Environment Interactions (1869-215X) (Inter-Research Science Center), 2020 , Vol. 12 , P. 529-540 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2020 fttriple https://doi.org/10.3354/aei00383 2023-01-22T18:30:56Z Bivalve predation by seabream has been observed worldwide and is a major concern for bivalve farmers. Farmed bivalve-seabream interactions must be better understood to ensure the sustainability of bivalve aquaculture. The objectives of this study were to characterize gilthead seabream Sparus aurata presence in a bivalve farm in Prevost Lagoon (Mediterranean Sea) using acoustic telemetry and to evaluate monthly losses of mussels Mytilus galloprovincialis and oysters Crassostrea gigas due to seabream predation over an 18 mo period inside the farm and at an unprotected experimental platform. Large (281 to 499 mm TL) seabream were more commonly detected in the bivalve farm than were small (200 to 280 mm TL) seabream. In contrast to small seabream, 90% of large seabream returned to and spent extended periods in the study area the following year, suggesting inter-annual site fidelity for large fish that used the bivalve farm as a feeding site. Signs of predation were observed on mussels and oysters throughout the year at the unprotected experimental platform. Farmers noted losses in the farm from April to September. Maximal losses (90 to 100%) were observed post-oyster ‘sticking’ and mussel socking. Despite the deployment of nets as mechanical protection to reduce predation, oyster losses represented 28% of the annual value of oysters sold while mussel losses were estimated at ca. 1%. These results suggest that bivalves must be protected by nets throughout the year to avoid predation, particularly post-handling. A collaboration between shellfish farmers and fishermen could be a sustainable solution for bivalve farming, by regularly fishing for seabream in farms, between tables and inside protective nets. Text Crassostrea gigas Unknown Aquaculture Environment Interactions 12 529 540 |
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envir geo Richard, Marion Forget, Fabien Mignucci, Alexandre Mortreux, Serge Le Gall, Patrik Callier, Myriam Weise, Am Mckindsey, Cw Bourjea, Jerome Farmed bivalve loss due to seabream predation in the French Mediterranean Prevost Lagoon |
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description |
Bivalve predation by seabream has been observed worldwide and is a major concern for bivalve farmers. Farmed bivalve-seabream interactions must be better understood to ensure the sustainability of bivalve aquaculture. The objectives of this study were to characterize gilthead seabream Sparus aurata presence in a bivalve farm in Prevost Lagoon (Mediterranean Sea) using acoustic telemetry and to evaluate monthly losses of mussels Mytilus galloprovincialis and oysters Crassostrea gigas due to seabream predation over an 18 mo period inside the farm and at an unprotected experimental platform. Large (281 to 499 mm TL) seabream were more commonly detected in the bivalve farm than were small (200 to 280 mm TL) seabream. In contrast to small seabream, 90% of large seabream returned to and spent extended periods in the study area the following year, suggesting inter-annual site fidelity for large fish that used the bivalve farm as a feeding site. Signs of predation were observed on mussels and oysters throughout the year at the unprotected experimental platform. Farmers noted losses in the farm from April to September. Maximal losses (90 to 100%) were observed post-oyster ‘sticking’ and mussel socking. Despite the deployment of nets as mechanical protection to reduce predation, oyster losses represented 28% of the annual value of oysters sold while mussel losses were estimated at ca. 1%. These results suggest that bivalves must be protected by nets throughout the year to avoid predation, particularly post-handling. A collaboration between shellfish farmers and fishermen could be a sustainable solution for bivalve farming, by regularly fishing for seabream in farms, between tables and inside protective nets. |
format |
Text |
author |
Richard, Marion Forget, Fabien Mignucci, Alexandre Mortreux, Serge Le Gall, Patrik Callier, Myriam Weise, Am Mckindsey, Cw Bourjea, Jerome |
author_facet |
Richard, Marion Forget, Fabien Mignucci, Alexandre Mortreux, Serge Le Gall, Patrik Callier, Myriam Weise, Am Mckindsey, Cw Bourjea, Jerome |
author_sort |
Richard, Marion |
title |
Farmed bivalve loss due to seabream predation in the French Mediterranean Prevost Lagoon |
title_short |
Farmed bivalve loss due to seabream predation in the French Mediterranean Prevost Lagoon |
title_full |
Farmed bivalve loss due to seabream predation in the French Mediterranean Prevost Lagoon |
title_fullStr |
Farmed bivalve loss due to seabream predation in the French Mediterranean Prevost Lagoon |
title_full_unstemmed |
Farmed bivalve loss due to seabream predation in the French Mediterranean Prevost Lagoon |
title_sort |
farmed bivalve loss due to seabream predation in the french mediterranean prevost lagoon |
publisher |
Inter-Research Science Center |
publishDate |
2020 |
url |
https://doi.org/10.3354/aei00383 https://archimer.ifremer.fr/doc/00663/77515/79299.pdf https://archimer.ifremer.fr/doc/00663/77515/79301.pdf https://archimer.ifremer.fr/doc/00663/77515/ |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
Archimer, archive institutionnelle de l'Ifremer Aquaculture Environment Interactions (1869-215X) (Inter-Research Science Center), 2020 , Vol. 12 , P. 529-540 |
op_relation |
doi:10.3354/aei00383 10670/1.lyov7x https://archimer.ifremer.fr/doc/00663/77515/79299.pdf https://archimer.ifremer.fr/doc/00663/77515/79301.pdf https://archimer.ifremer.fr/doc/00663/77515/ |
op_rights |
other |
op_doi |
https://doi.org/10.3354/aei00383 |
container_title |
Aquaculture Environment Interactions |
container_volume |
12 |
container_start_page |
529 |
op_container_end_page |
540 |
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1766394782213472256 |