SNP-based parentage analyses over two successive generations demonstrates the feasibility of efficient production of inbred lines in the Pacific oyster (Crassostrea gigas) by self-fertilization of simultaneous hermaphrodites despite severe inbreeding depression
The Pacific oyster, Crassostrea gigas, is a species in which true male and true female well as hermaphrodite individuals have been reported. Among the latter, most are sequential, with one or more sex changes throughout their live, while a few (<2%) are simultaneous hermaphrodites (SH) which may...
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Format: | Article in Journal/Newspaper |
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Online Access: | https://hal.science/hal-04203602 https://doi.org/10.1016/j.aquaculture.2021.737443 |
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ftccsdartic:oai:HAL:hal-04203602v1 2023-12-31T10:06:05+01:00 SNP-based parentage analyses over two successive generations demonstrates the feasibility of efficient production of inbred lines in the Pacific oyster (Crassostrea gigas) by self-fertilization of simultaneous hermaphrodites despite severe inbreeding depression Dégremont, Lionel Maurouard, Elise Jourdan, Antoine Lamy, Jean-Baptiste Boudry, Pierre Laboratoire de Génétique et Pathologie des Mollusques Marins (LGPMM) Santé, Génétique et Microbiologie des Mollusques (SGMM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) 2022-01 https://hal.science/hal-04203602 https://doi.org/10.1016/j.aquaculture.2021.737443 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aquaculture.2021.737443 hal-04203602 https://hal.science/hal-04203602 doi:10.1016/j.aquaculture.2021.737443 ISSN: 0044-8486 EISSN: 1873-5622 Aquaculture https://hal.science/hal-04203602 Aquaculture, 2022, 547, 737443 (5p.). ⟨10.1016/j.aquaculture.2021.737443⟩ [SDV]Life Sciences [q-bio] [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2022 ftccsdartic https://doi.org/10.1016/j.aquaculture.2021.737443 2023-12-02T23:40:13Z The Pacific oyster, Crassostrea gigas, is a species in which true male and true female well as hermaphrodite individuals have been reported. Among the latter, most are sequential, with one or more sex changes throughout their live, while a few (<2%) are simultaneous hermaphrodites (SH) which may self-fertilize. Sex determinism and its functional bases remain unclear is this species. In this study, one SH oyster was found among a mature broodstock and used to produce a progeny by self-fertilization. Several thousand offspring were obtained for this family (SF1) but only 73 SF1 oysters survived following an episode of mass mortality at the spat stage. Six of them were conditioned for reproduction and three were found to be SH, and one produced a limited but viable progeny by self-fertilization (SF2). Oysters were sampled and genotyped with 226 SNP markers, confirming that the SF1 and the SF2 oysters were produced by self-fertilization over two successive generations. To our knowledge, it is the second study reporting the feasibility of production on an inbred line of Pacific oysters by self-fertilization using a simultaneous hermaphrodite as primary genitor, and the first study to generate two successive generations of selfing. Observed mean inbreeding coefficient of SF2 oysters produced by selfing for two generations was 0.61, ranging from 0.46 to 0.80. This coefficient was lower than the expected theoretical value (0.8125), suggesting that the most homozygous offspring died at early stages due to inbreeding depression. Our study demonstrates that inbred lines of Pacific oysters can be produced by self-fertilization but may exhibit higher heterozygosity than theoretically expected due to better survival of the most heterozygous offspring. Article in Journal/Newspaper Crassostrea gigas Pacific oyster Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Aquaculture 547 737443 |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDV]Life Sciences [q-bio] [SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDV]Life Sciences [q-bio] [SDU]Sciences of the Universe [physics] Dégremont, Lionel Maurouard, Elise Jourdan, Antoine Lamy, Jean-Baptiste Boudry, Pierre SNP-based parentage analyses over two successive generations demonstrates the feasibility of efficient production of inbred lines in the Pacific oyster (Crassostrea gigas) by self-fertilization of simultaneous hermaphrodites despite severe inbreeding depression |
topic_facet |
[SDV]Life Sciences [q-bio] [SDU]Sciences of the Universe [physics] |
description |
The Pacific oyster, Crassostrea gigas, is a species in which true male and true female well as hermaphrodite individuals have been reported. Among the latter, most are sequential, with one or more sex changes throughout their live, while a few (<2%) are simultaneous hermaphrodites (SH) which may self-fertilize. Sex determinism and its functional bases remain unclear is this species. In this study, one SH oyster was found among a mature broodstock and used to produce a progeny by self-fertilization. Several thousand offspring were obtained for this family (SF1) but only 73 SF1 oysters survived following an episode of mass mortality at the spat stage. Six of them were conditioned for reproduction and three were found to be SH, and one produced a limited but viable progeny by self-fertilization (SF2). Oysters were sampled and genotyped with 226 SNP markers, confirming that the SF1 and the SF2 oysters were produced by self-fertilization over two successive generations. To our knowledge, it is the second study reporting the feasibility of production on an inbred line of Pacific oysters by self-fertilization using a simultaneous hermaphrodite as primary genitor, and the first study to generate two successive generations of selfing. Observed mean inbreeding coefficient of SF2 oysters produced by selfing for two generations was 0.61, ranging from 0.46 to 0.80. This coefficient was lower than the expected theoretical value (0.8125), suggesting that the most homozygous offspring died at early stages due to inbreeding depression. Our study demonstrates that inbred lines of Pacific oysters can be produced by self-fertilization but may exhibit higher heterozygosity than theoretically expected due to better survival of the most heterozygous offspring. |
author2 |
Laboratoire de Génétique et Pathologie des Mollusques Marins (LGPMM) Santé, Génétique et Microbiologie des Mollusques (SGMM) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-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 |
Dégremont, Lionel Maurouard, Elise Jourdan, Antoine Lamy, Jean-Baptiste Boudry, Pierre |
author_facet |
Dégremont, Lionel Maurouard, Elise Jourdan, Antoine Lamy, Jean-Baptiste Boudry, Pierre |
author_sort |
Dégremont, Lionel |
title |
SNP-based parentage analyses over two successive generations demonstrates the feasibility of efficient production of inbred lines in the Pacific oyster (Crassostrea gigas) by self-fertilization of simultaneous hermaphrodites despite severe inbreeding depression |
title_short |
SNP-based parentage analyses over two successive generations demonstrates the feasibility of efficient production of inbred lines in the Pacific oyster (Crassostrea gigas) by self-fertilization of simultaneous hermaphrodites despite severe inbreeding depression |
title_full |
SNP-based parentage analyses over two successive generations demonstrates the feasibility of efficient production of inbred lines in the Pacific oyster (Crassostrea gigas) by self-fertilization of simultaneous hermaphrodites despite severe inbreeding depression |
title_fullStr |
SNP-based parentage analyses over two successive generations demonstrates the feasibility of efficient production of inbred lines in the Pacific oyster (Crassostrea gigas) by self-fertilization of simultaneous hermaphrodites despite severe inbreeding depression |
title_full_unstemmed |
SNP-based parentage analyses over two successive generations demonstrates the feasibility of efficient production of inbred lines in the Pacific oyster (Crassostrea gigas) by self-fertilization of simultaneous hermaphrodites despite severe inbreeding depression |
title_sort |
snp-based parentage analyses over two successive generations demonstrates the feasibility of efficient production of inbred lines in the pacific oyster (crassostrea gigas) by self-fertilization of simultaneous hermaphrodites despite severe inbreeding depression |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04203602 https://doi.org/10.1016/j.aquaculture.2021.737443 |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
ISSN: 0044-8486 EISSN: 1873-5622 Aquaculture https://hal.science/hal-04203602 Aquaculture, 2022, 547, 737443 (5p.). ⟨10.1016/j.aquaculture.2021.737443⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aquaculture.2021.737443 hal-04203602 https://hal.science/hal-04203602 doi:10.1016/j.aquaculture.2021.737443 |
op_doi |
https://doi.org/10.1016/j.aquaculture.2021.737443 |
container_title |
Aquaculture |
container_volume |
547 |
container_start_page |
737443 |
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1786837845276622848 |