Temperature influence on pathogen transmission and subsequent mortalities in juvenile Pacific oysters Crassostrea gigas
International audience Since 2008, mass mortalities of 1-yr-old Crassostrea gigas associated with the ostreid herpesvirus OsHV-1 μVar have occurred along all the coasts of France when seawater temperature reaches 16 to 17°C. The present study aimed to characterize the effect of temperature on oyster...
Published in: | Aquaculture Environment Interactions |
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Main Authors: | , , , |
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2013
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Online Access: | https://hal.univ-brest.fr/hal-00946757 https://hal.univ-brest.fr/hal-00946757/document https://hal.univ-brest.fr/hal-00946757/file/Aquacult.Env.Inter.Petton.pdf https://doi.org/10.3354/aei00070 |
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ftunivbrest:oai:HAL:hal-00946757v1 |
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openpolar |
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Open Polar |
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Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
Juvenile oyster Pathology Ostreid herpesvirus 1 Survival Temperature Vibrios [SDE]Environmental Sciences |
spellingShingle |
Juvenile oyster Pathology Ostreid herpesvirus 1 Survival Temperature Vibrios [SDE]Environmental Sciences Petton, Bruno Pernet, Fabrice Robert, René Boudry, Pierre Temperature influence on pathogen transmission and subsequent mortalities in juvenile Pacific oysters Crassostrea gigas |
topic_facet |
Juvenile oyster Pathology Ostreid herpesvirus 1 Survival Temperature Vibrios [SDE]Environmental Sciences |
description |
International audience Since 2008, mass mortalities of 1-yr-old Crassostrea gigas associated with the ostreid herpesvirus OsHV-1 μVar have occurred along all the coasts of France when seawater temperature reaches 16 to 17°C. The present study aimed to characterize the effect of temperature on oyster survival in combination with OsHV-1 DNA quantification by standard real-time PCR and total vibrio population levels in oyster tissues. To examine the effect of seawater temperature on disease transmission and related mortality of oysters, cohabitation experiments were conducted between healthy naïve oysters and oysters previously exposed to field conditions in areas where mortalities were occurring. Oysters initially maintained in controlled conditions (free of mortality and negative for OsHV-1), and then transferred to an area where high mortalities were occurring among farmed stocks, became infected with OsHV-1 and exhibited high loads of vibrios followed by significant mortalities. When previously exposed oysters were maintained indoors at 13.0°C for 40 d and then at 20.6°C, they exhibited no mortality, were negative for OsHV-1 detection, and did not transmit the disease to healthy oysters. Survival of previously exposed oysters maintained indoors at 8 temperatures ranging from 13.4 to 29.0°C varied from 25 to 48% and was negatively correlated with holding temperature. Concomitantly, survival of naïve cohabiting animals (62 to 98%) decreased with increasing seawater temperature until a plateau was reached between 16.2 and 21.9°C, and increased at higher temperatures. Therefore, the optimal temperature range for disease transmission from field-exposed to naïve animals was between 16.2 and 21.9°C. Our results suggest that a long-term period (40 d) at low temperature (13°C) may offer a method of mitigating mortalities in oysters that have been exposed to an infective environment. |
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) |
format |
Article in Journal/Newspaper |
author |
Petton, Bruno Pernet, Fabrice Robert, René Boudry, Pierre |
author_facet |
Petton, Bruno Pernet, Fabrice Robert, René Boudry, Pierre |
author_sort |
Petton, Bruno |
title |
Temperature influence on pathogen transmission and subsequent mortalities in juvenile Pacific oysters Crassostrea gigas |
title_short |
Temperature influence on pathogen transmission and subsequent mortalities in juvenile Pacific oysters Crassostrea gigas |
title_full |
Temperature influence on pathogen transmission and subsequent mortalities in juvenile Pacific oysters Crassostrea gigas |
title_fullStr |
Temperature influence on pathogen transmission and subsequent mortalities in juvenile Pacific oysters Crassostrea gigas |
title_full_unstemmed |
Temperature influence on pathogen transmission and subsequent mortalities in juvenile Pacific oysters Crassostrea gigas |
title_sort |
temperature influence on pathogen transmission and subsequent mortalities in juvenile pacific oysters crassostrea gigas |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.univ-brest.fr/hal-00946757 https://hal.univ-brest.fr/hal-00946757/document https://hal.univ-brest.fr/hal-00946757/file/Aquacult.Env.Inter.Petton.pdf https://doi.org/10.3354/aei00070 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
ISSN: 1869-215X Aquaculture Environment Interactions https://hal.univ-brest.fr/hal-00946757 Aquaculture Environment Interactions, 2013, 3, pp.257-273. ⟨10.3354/aei00070⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/aei00070 hal-00946757 https://hal.univ-brest.fr/hal-00946757 https://hal.univ-brest.fr/hal-00946757/document https://hal.univ-brest.fr/hal-00946757/file/Aquacult.Env.Inter.Petton.pdf doi:10.3354/aei00070 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3354/aei00070 |
container_title |
Aquaculture Environment Interactions |
container_volume |
3 |
container_issue |
3 |
container_start_page |
257 |
op_container_end_page |
273 |
_version_ |
1790599341687177216 |
spelling |
ftunivbrest:oai:HAL:hal-00946757v1 2024-02-11T10:03:10+01:00 Temperature influence on pathogen transmission and subsequent mortalities in juvenile Pacific oysters Crassostrea gigas Petton, Bruno Pernet, Fabrice Robert, René Boudry, Pierre 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) 2013-07-19 https://hal.univ-brest.fr/hal-00946757 https://hal.univ-brest.fr/hal-00946757/document https://hal.univ-brest.fr/hal-00946757/file/Aquacult.Env.Inter.Petton.pdf https://doi.org/10.3354/aei00070 en eng HAL CCSD Inter-reseach science publisher info:eu-repo/semantics/altIdentifier/doi/10.3354/aei00070 hal-00946757 https://hal.univ-brest.fr/hal-00946757 https://hal.univ-brest.fr/hal-00946757/document https://hal.univ-brest.fr/hal-00946757/file/Aquacult.Env.Inter.Petton.pdf doi:10.3354/aei00070 info:eu-repo/semantics/OpenAccess ISSN: 1869-215X Aquaculture Environment Interactions https://hal.univ-brest.fr/hal-00946757 Aquaculture Environment Interactions, 2013, 3, pp.257-273. ⟨10.3354/aei00070⟩ Juvenile oyster Pathology Ostreid herpesvirus 1 Survival Temperature Vibrios [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2013 ftunivbrest https://doi.org/10.3354/aei00070 2024-01-23T23:35:56Z International audience Since 2008, mass mortalities of 1-yr-old Crassostrea gigas associated with the ostreid herpesvirus OsHV-1 μVar have occurred along all the coasts of France when seawater temperature reaches 16 to 17°C. The present study aimed to characterize the effect of temperature on oyster survival in combination with OsHV-1 DNA quantification by standard real-time PCR and total vibrio population levels in oyster tissues. To examine the effect of seawater temperature on disease transmission and related mortality of oysters, cohabitation experiments were conducted between healthy naïve oysters and oysters previously exposed to field conditions in areas where mortalities were occurring. Oysters initially maintained in controlled conditions (free of mortality and negative for OsHV-1), and then transferred to an area where high mortalities were occurring among farmed stocks, became infected with OsHV-1 and exhibited high loads of vibrios followed by significant mortalities. When previously exposed oysters were maintained indoors at 13.0°C for 40 d and then at 20.6°C, they exhibited no mortality, were negative for OsHV-1 detection, and did not transmit the disease to healthy oysters. Survival of previously exposed oysters maintained indoors at 8 temperatures ranging from 13.4 to 29.0°C varied from 25 to 48% and was negatively correlated with holding temperature. Concomitantly, survival of naïve cohabiting animals (62 to 98%) decreased with increasing seawater temperature until a plateau was reached between 16.2 and 21.9°C, and increased at higher temperatures. Therefore, the optimal temperature range for disease transmission from field-exposed to naïve animals was between 16.2 and 21.9°C. Our results suggest that a long-term period (40 d) at low temperature (13°C) may offer a method of mitigating mortalities in oysters that have been exposed to an infective environment. Article in Journal/Newspaper Crassostrea gigas Université de Bretagne Occidentale: HAL Pacific Aquaculture Environment Interactions 3 3 257 273 |