Summer mortality of hatchery-produced Pacific oyster spat (Crassostrea gigas). I. Estimation of genetic parameters for survival and growth
The multidisciplinary project "MOREST" aims to improve our understanding of causes of summer mortality in Crassostrea gigas juveniles in France and to reduce its impact on oyster production. As pail of the MOREST project, 43 full-sib families nested within 17 half-sib families were produce...
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Online Access: | https://archimer.ifremer.fr/doc/2007/publication-2457.pdf https://doi.org/10.1016/j.aquaculture.2006.10.025 https://archimer.ifremer.fr/doc/00000/2457/ |
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ftarchimer:oai:archimer.ifremer.fr:2457 2023-05-15T15:57:42+02:00 Summer mortality of hatchery-produced Pacific oyster spat (Crassostrea gigas). I. Estimation of genetic parameters for survival and growth Degremont, Lionel Ernande, Bruno Bedier, Edouard Boudry, Pierre 2007-02 application/pdf https://archimer.ifremer.fr/doc/2007/publication-2457.pdf https://doi.org/10.1016/j.aquaculture.2006.10.025 https://archimer.ifremer.fr/doc/00000/2457/ eng eng Elsevier https://archimer.ifremer.fr/doc/2007/publication-2457.pdf doi:10.1016/j.aquaculture.2006.10.025 https://archimer.ifremer.fr/doc/00000/2457/ 2006 Elsevier info:eu-repo/semantics/openAccess restricted use Aquaculture (0044-8486) (Elsevier), 2007-02 , Vol. 262 , N. 1 , P. 41-53 Growth Survival Juveniles Heritability Crassostrea gigas text Publication info:eu-repo/semantics/article 2007 ftarchimer https://doi.org/10.1016/j.aquaculture.2006.10.025 2021-09-23T20:14:45Z The multidisciplinary project "MOREST" aims to improve our understanding of causes of summer mortality in Crassostrea gigas juveniles in France and to reduce its impact on oyster production. As pail of the MOREST project, 43 full-sib families nested within 17 half-sib families were produced, planted out and tested in 3 sites during summer 2001 to assess to what extent genetic variability exists for this trait. A strong genetic basis was found for survival as narrow-sense heritability estimates ranged from 0.47 to 1.08, with higher values in sites where summer mortality was higher. Genetic correlations across sites were positive and very high for survival, indicating no genotype by environment interaction. In contrast, lower genetic variation was observed for growth in all sites. Finally, genetic correlations between growth and survival were low, in all sites. Selective breeding in a single site should therefore be an efficient means of improving survival in oysters less than one year old along the French Atlantic and Channel coastlines with only very limited effects on growth. As yield mostly depends on survival and growth, this approach should significantly improve harvestable yield. Possible reasons why a high genetic variance for survival appears to be maintained in wild populations are discussed. (c) 2006 Elsevier B.V. All rights reserved. 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 Aquaculture 262 1 41 53 |
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 |
Growth Survival Juveniles Heritability Crassostrea gigas |
spellingShingle |
Growth Survival Juveniles Heritability Crassostrea gigas Degremont, Lionel Ernande, Bruno Bedier, Edouard Boudry, Pierre Summer mortality of hatchery-produced Pacific oyster spat (Crassostrea gigas). I. Estimation of genetic parameters for survival and growth |
topic_facet |
Growth Survival Juveniles Heritability Crassostrea gigas |
description |
The multidisciplinary project "MOREST" aims to improve our understanding of causes of summer mortality in Crassostrea gigas juveniles in France and to reduce its impact on oyster production. As pail of the MOREST project, 43 full-sib families nested within 17 half-sib families were produced, planted out and tested in 3 sites during summer 2001 to assess to what extent genetic variability exists for this trait. A strong genetic basis was found for survival as narrow-sense heritability estimates ranged from 0.47 to 1.08, with higher values in sites where summer mortality was higher. Genetic correlations across sites were positive and very high for survival, indicating no genotype by environment interaction. In contrast, lower genetic variation was observed for growth in all sites. Finally, genetic correlations between growth and survival were low, in all sites. Selective breeding in a single site should therefore be an efficient means of improving survival in oysters less than one year old along the French Atlantic and Channel coastlines with only very limited effects on growth. As yield mostly depends on survival and growth, this approach should significantly improve harvestable yield. Possible reasons why a high genetic variance for survival appears to be maintained in wild populations are discussed. (c) 2006 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Degremont, Lionel Ernande, Bruno Bedier, Edouard Boudry, Pierre |
author_facet |
Degremont, Lionel Ernande, Bruno Bedier, Edouard Boudry, Pierre |
author_sort |
Degremont, Lionel |
title |
Summer mortality of hatchery-produced Pacific oyster spat (Crassostrea gigas). I. Estimation of genetic parameters for survival and growth |
title_short |
Summer mortality of hatchery-produced Pacific oyster spat (Crassostrea gigas). I. Estimation of genetic parameters for survival and growth |
title_full |
Summer mortality of hatchery-produced Pacific oyster spat (Crassostrea gigas). I. Estimation of genetic parameters for survival and growth |
title_fullStr |
Summer mortality of hatchery-produced Pacific oyster spat (Crassostrea gigas). I. Estimation of genetic parameters for survival and growth |
title_full_unstemmed |
Summer mortality of hatchery-produced Pacific oyster spat (Crassostrea gigas). I. Estimation of genetic parameters for survival and growth |
title_sort |
summer mortality of hatchery-produced pacific oyster spat (crassostrea gigas). i. estimation of genetic parameters for survival and growth |
publisher |
Elsevier |
publishDate |
2007 |
url |
https://archimer.ifremer.fr/doc/2007/publication-2457.pdf https://doi.org/10.1016/j.aquaculture.2006.10.025 https://archimer.ifremer.fr/doc/00000/2457/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
Aquaculture (0044-8486) (Elsevier), 2007-02 , Vol. 262 , N. 1 , P. 41-53 |
op_relation |
https://archimer.ifremer.fr/doc/2007/publication-2457.pdf doi:10.1016/j.aquaculture.2006.10.025 https://archimer.ifremer.fr/doc/00000/2457/ |
op_rights |
2006 Elsevier info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.aquaculture.2006.10.025 |
container_title |
Aquaculture |
container_volume |
262 |
container_issue |
1 |
container_start_page |
41 |
op_container_end_page |
53 |
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1766393392531505152 |