Mass mortalities of Pacific oysters Crassostrea gigas reflect infectious diseases and vary with farming practices in the Mediterranean Thau lagoon, France
Experiments were conducted to investigate the effects of farming sites, seeding date, age of oysters, ploidy level and rearing structures on mortality, pathogens and energetic reserves of oysters Crassostrea gigas. Mortality of oysters coincided with infections involving, primarily, the ostreid herp...
Published in: | Aquaculture Environment Interactions |
---|---|
Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2012
|
Subjects: | |
Online Access: | https://hal.science/hal-04499199 https://doi.org/10.3354/aei00041 |
id |
ftunivbrest:oai:HAL:hal-04499199v1 |
---|---|
record_format |
openpolar |
spelling |
ftunivbrest:oai:HAL:hal-04499199v1 2024-04-28T08:16:33+00:00 Mass mortalities of Pacific oysters Crassostrea gigas reflect infectious diseases and vary with farming practices in the Mediterranean Thau lagoon, France Pernet, Fabrice Barret, Jean Le Gall, Patrik Corporeau, Charlotte Degremont, Lionel Lagarde, Franck Pepin, Jean-Francois Keck, Nicolas Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Environnement Ressources Languedoc Roussillon (LERLR) Unité Littoral (LITTORAL) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Unité Amélioration génétique, Santé animale et Environnement (AGSAE) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) 2012-06-25 https://hal.science/hal-04499199 https://doi.org/10.3354/aei00041 en eng HAL CCSD Inter-reseach science publisher info:eu-repo/semantics/altIdentifier/doi/10.3354/aei00041 hal-04499199 https://hal.science/hal-04499199 doi:10.3354/aei00041 ISSN: 1869-215X Aquaculture Environment Interactions https://hal.science/hal-04499199 Aquaculture Environment Interactions, 2012, 2 (3), pp.215-237. ⟨10.3354/aei00041⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2012 ftunivbrest https://doi.org/10.3354/aei00041 2024-04-04T17:01:31Z Experiments were conducted to investigate the effects of farming sites, seeding date, age of oysters, ploidy level and rearing structures on mortality, pathogens and energetic reserves of oysters Crassostrea gigas. Mortality of oysters coincided with infections involving, primarily, the ostreid herpesvirus OsHV-1 and, secondarily, bacteria of the group Vibrio splendidus, when seawater temperature was between 17 and 24°C. Mortality started in early May and lasted until late September, with an interruption in July and August when seawater temperatures rose above 24°C. Mortality varied with farming site: oysters maintained in the open Mediterranean Sea showed no mortality and OsHV-1 was occasionally detected at a low level only, while oysters maintained in the farming area of the Thau lagoon exhibited mass mortality events concomitantly with outbreaks of OsHV-1. Mortality of oysters maintained in the Thau lagoon but outside the oyster farming area was sporadic and coincided with currents coming from the farming area where mortality was occurring. Mortality of oysters also varied with farming practices. Naïve oysters remained susceptible to pathogen-related mortality pressure during their first 2 yr, whereas oysters that had survived a mass mortality event in the past appeared resistant. Mortalities of diploid (2n) and triploid (3n) oysters were similar during spring but mortalities of 2n oysters were double those of 3n oysters during summer and autumn. Finally, oysters grown in Australian baskets suffered 80% mortality compared with only 30% among oysters cemented onto ropes. The effects of farming practices on mortality are discussed in relation to pathogens and energetic reserves of oysters. Article in Journal/Newspaper Crassostrea gigas Université de Bretagne Occidentale: HAL Aquaculture Environment Interactions 2 3 215 237 |
institution |
Open Polar |
collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
[SDV]Life Sciences [q-bio] |
spellingShingle |
[SDV]Life Sciences [q-bio] Pernet, Fabrice Barret, Jean Le Gall, Patrik Corporeau, Charlotte Degremont, Lionel Lagarde, Franck Pepin, Jean-Francois Keck, Nicolas Mass mortalities of Pacific oysters Crassostrea gigas reflect infectious diseases and vary with farming practices in the Mediterranean Thau lagoon, France |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
Experiments were conducted to investigate the effects of farming sites, seeding date, age of oysters, ploidy level and rearing structures on mortality, pathogens and energetic reserves of oysters Crassostrea gigas. Mortality of oysters coincided with infections involving, primarily, the ostreid herpesvirus OsHV-1 and, secondarily, bacteria of the group Vibrio splendidus, when seawater temperature was between 17 and 24°C. Mortality started in early May and lasted until late September, with an interruption in July and August when seawater temperatures rose above 24°C. Mortality varied with farming site: oysters maintained in the open Mediterranean Sea showed no mortality and OsHV-1 was occasionally detected at a low level only, while oysters maintained in the farming area of the Thau lagoon exhibited mass mortality events concomitantly with outbreaks of OsHV-1. Mortality of oysters maintained in the Thau lagoon but outside the oyster farming area was sporadic and coincided with currents coming from the farming area where mortality was occurring. Mortality of oysters also varied with farming practices. Naïve oysters remained susceptible to pathogen-related mortality pressure during their first 2 yr, whereas oysters that had survived a mass mortality event in the past appeared resistant. Mortalities of diploid (2n) and triploid (3n) oysters were similar during spring but mortalities of 2n oysters were double those of 3n oysters during summer and autumn. Finally, oysters grown in Australian baskets suffered 80% mortality compared with only 30% among oysters cemented onto ropes. The effects of farming practices on mortality are discussed in relation to pathogens and energetic reserves of oysters. |
author2 |
Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Environnement Ressources Languedoc Roussillon (LERLR) Unité Littoral (LITTORAL) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Unité Amélioration génétique, Santé animale et Environnement (AGSAE) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
format |
Article in Journal/Newspaper |
author |
Pernet, Fabrice Barret, Jean Le Gall, Patrik Corporeau, Charlotte Degremont, Lionel Lagarde, Franck Pepin, Jean-Francois Keck, Nicolas |
author_facet |
Pernet, Fabrice Barret, Jean Le Gall, Patrik Corporeau, Charlotte Degremont, Lionel Lagarde, Franck Pepin, Jean-Francois Keck, Nicolas |
author_sort |
Pernet, Fabrice |
title |
Mass mortalities of Pacific oysters Crassostrea gigas reflect infectious diseases and vary with farming practices in the Mediterranean Thau lagoon, France |
title_short |
Mass mortalities of Pacific oysters Crassostrea gigas reflect infectious diseases and vary with farming practices in the Mediterranean Thau lagoon, France |
title_full |
Mass mortalities of Pacific oysters Crassostrea gigas reflect infectious diseases and vary with farming practices in the Mediterranean Thau lagoon, France |
title_fullStr |
Mass mortalities of Pacific oysters Crassostrea gigas reflect infectious diseases and vary with farming practices in the Mediterranean Thau lagoon, France |
title_full_unstemmed |
Mass mortalities of Pacific oysters Crassostrea gigas reflect infectious diseases and vary with farming practices in the Mediterranean Thau lagoon, France |
title_sort |
mass mortalities of pacific oysters crassostrea gigas reflect infectious diseases and vary with farming practices in the mediterranean thau lagoon, france |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/hal-04499199 https://doi.org/10.3354/aei00041 |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
ISSN: 1869-215X Aquaculture Environment Interactions https://hal.science/hal-04499199 Aquaculture Environment Interactions, 2012, 2 (3), pp.215-237. ⟨10.3354/aei00041⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/aei00041 hal-04499199 https://hal.science/hal-04499199 doi:10.3354/aei00041 |
op_doi |
https://doi.org/10.3354/aei00041 |
container_title |
Aquaculture Environment Interactions |
container_volume |
2 |
container_issue |
3 |
container_start_page |
215 |
op_container_end_page |
237 |
_version_ |
1797581633639940096 |