Chromosome inheritance in triploid Pacific oyster Crassostrea gigas thunberg
Reproduction and chromosome inheritance in triploid Pacific oyster (Crassostrea gigas Thunberg) were studied in diploid female x triploid male (DT) and reciprocal (TD) crosses. Relative fecundity of triploid females was 13.4% of normal diploids. Cumulative survival from fertilized eggs to spat stage...
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2004
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Online Access: | http://ir.qdio.ac.cn/handle/337002/1789 https://doi.org/10.1038/sj.hdy.6800517 |
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/1788 2023-05-15T15:57:55+02:00 Chromosome inheritance in triploid Pacific oyster Crassostrea gigas thunberg Gong, N Yang, H Zhang, G Landau, BJ Guo, X Guo, X, Rutgers State Univ, Haskin Shellfish Res Lab, Inst Marine & Coastal Sci, 6959 Miller Ave, Port Norris, NJ 08349 USA 2004-11-01 http://ir.qdio.ac.cn/handle/337002/1789 https://doi.org/10.1038/sj.hdy.6800517 英语 eng HEREDITY Gong, N; Yang, H; Zhang, G; Landau, BJ; Guo, X.Chromosome inheritance in triploid Pacific oyster Crassostrea gigas thunberg,HEREDITY,2004,93(5):408-415 http://ir.qdio.ac.cn/handle/337002/1789 doi:10.1038/sj.hdy.6800517 Triploidy Aneuploidy Chromosome Sterility Evolution Mollusc Ecology Evolutionary Biology Genetics & Heredity Article 期刊论文 2004 ftchinacasciocas https://doi.org/10.1038/sj.hdy.6800517 2022-06-27T05:32:07Z Reproduction and chromosome inheritance in triploid Pacific oyster (Crassostrea gigas Thunberg) were studied in diploid female x triploid male (DT) and reciprocal (TD) crosses. Relative fecundity of triploid females was 13.4% of normal diploids. Cumulative survival from fertilized eggs to spat stage was 0.007% for DT crosses and 0.314% for TD crosses. Chromosome number analysis was conducted on surviving progeny from DT and TD crosses at 1 and 4 years of age. At Year 1, oysters from DT crosses consisted of 15% diploids (2n = 20) and 85% aneuploids. In contrast, oysters from TD crosses consisted of 57.2% diploids, 30.9% triploids (3n = 30) and only 11.9% aneuploids, suggesting that triploid females produced more euploid gametes and viable progeny than triploid males. Viable aneuploid chromosome numbers included 2n + 1, 2n + 2, 2n + 3, 3n - 2 and 3n - 1. There was little change over time in the overall frequency of diploids, triploids and aneuploids. Among aneuploids, oysters with 2n + 3 and 3n-2 chromosomes were observed at Year 1, but absent at Year 4. Triploid progeny were significantly larger than diploids by 79% in whole body weight and 98% in meat weight at 4 years of age. Aneuploids were significantly smaller than normal diploids. This study suggests that triploid Pacific oyster is not completely sterile and cannot offer complete containment of cultured populations. Reproduction and chromosome inheritance in triploid Pacific oyster (Crassostrea gigas Thunberg) were studied in diploid female x triploid male (DT) and reciprocal (TD) crosses. Relative fecundity of triploid females was 13.4% of normal diploids. Cumulative survival from fertilized eggs to spat stage was 0.007% for DT crosses and 0.314% for TD crosses. Chromosome number analysis was conducted on surviving progeny from DT and TD crosses at 1 and 4 years of age. At Year 1, oysters from DT crosses consisted of 15% diploids (2n = 20) and 85% aneuploids. In contrast, oysters from TD crosses consisted of 57.2% diploids, 30.9% triploids (3n = 30) and ... Article in Journal/Newspaper Crassostrea gigas Pacific oyster Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Pacific Heredity 93 5 408 415 |
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Open Polar |
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Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Triploidy Aneuploidy Chromosome Sterility Evolution Mollusc Ecology Evolutionary Biology Genetics & Heredity |
spellingShingle |
Triploidy Aneuploidy Chromosome Sterility Evolution Mollusc Ecology Evolutionary Biology Genetics & Heredity Gong, N Yang, H Zhang, G Landau, BJ Guo, X Guo, X, Rutgers State Univ, Haskin Shellfish Res Lab, Inst Marine & Coastal Sci, 6959 Miller Ave, Port Norris, NJ 08349 USA Chromosome inheritance in triploid Pacific oyster Crassostrea gigas thunberg |
topic_facet |
Triploidy Aneuploidy Chromosome Sterility Evolution Mollusc Ecology Evolutionary Biology Genetics & Heredity |
description |
Reproduction and chromosome inheritance in triploid Pacific oyster (Crassostrea gigas Thunberg) were studied in diploid female x triploid male (DT) and reciprocal (TD) crosses. Relative fecundity of triploid females was 13.4% of normal diploids. Cumulative survival from fertilized eggs to spat stage was 0.007% for DT crosses and 0.314% for TD crosses. Chromosome number analysis was conducted on surviving progeny from DT and TD crosses at 1 and 4 years of age. At Year 1, oysters from DT crosses consisted of 15% diploids (2n = 20) and 85% aneuploids. In contrast, oysters from TD crosses consisted of 57.2% diploids, 30.9% triploids (3n = 30) and only 11.9% aneuploids, suggesting that triploid females produced more euploid gametes and viable progeny than triploid males. Viable aneuploid chromosome numbers included 2n + 1, 2n + 2, 2n + 3, 3n - 2 and 3n - 1. There was little change over time in the overall frequency of diploids, triploids and aneuploids. Among aneuploids, oysters with 2n + 3 and 3n-2 chromosomes were observed at Year 1, but absent at Year 4. Triploid progeny were significantly larger than diploids by 79% in whole body weight and 98% in meat weight at 4 years of age. Aneuploids were significantly smaller than normal diploids. This study suggests that triploid Pacific oyster is not completely sterile and cannot offer complete containment of cultured populations. Reproduction and chromosome inheritance in triploid Pacific oyster (Crassostrea gigas Thunberg) were studied in diploid female x triploid male (DT) and reciprocal (TD) crosses. Relative fecundity of triploid females was 13.4% of normal diploids. Cumulative survival from fertilized eggs to spat stage was 0.007% for DT crosses and 0.314% for TD crosses. Chromosome number analysis was conducted on surviving progeny from DT and TD crosses at 1 and 4 years of age. At Year 1, oysters from DT crosses consisted of 15% diploids (2n = 20) and 85% aneuploids. In contrast, oysters from TD crosses consisted of 57.2% diploids, 30.9% triploids (3n = 30) and ... |
format |
Article in Journal/Newspaper |
author |
Gong, N Yang, H Zhang, G Landau, BJ Guo, X Guo, X, Rutgers State Univ, Haskin Shellfish Res Lab, Inst Marine & Coastal Sci, 6959 Miller Ave, Port Norris, NJ 08349 USA |
author_facet |
Gong, N Yang, H Zhang, G Landau, BJ Guo, X Guo, X, Rutgers State Univ, Haskin Shellfish Res Lab, Inst Marine & Coastal Sci, 6959 Miller Ave, Port Norris, NJ 08349 USA |
author_sort |
Gong, N |
title |
Chromosome inheritance in triploid Pacific oyster Crassostrea gigas thunberg |
title_short |
Chromosome inheritance in triploid Pacific oyster Crassostrea gigas thunberg |
title_full |
Chromosome inheritance in triploid Pacific oyster Crassostrea gigas thunberg |
title_fullStr |
Chromosome inheritance in triploid Pacific oyster Crassostrea gigas thunberg |
title_full_unstemmed |
Chromosome inheritance in triploid Pacific oyster Crassostrea gigas thunberg |
title_sort |
chromosome inheritance in triploid pacific oyster crassostrea gigas thunberg |
publishDate |
2004 |
url |
http://ir.qdio.ac.cn/handle/337002/1789 https://doi.org/10.1038/sj.hdy.6800517 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_relation |
HEREDITY Gong, N; Yang, H; Zhang, G; Landau, BJ; Guo, X.Chromosome inheritance in triploid Pacific oyster Crassostrea gigas thunberg,HEREDITY,2004,93(5):408-415 http://ir.qdio.ac.cn/handle/337002/1789 doi:10.1038/sj.hdy.6800517 |
op_doi |
https://doi.org/10.1038/sj.hdy.6800517 |
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Heredity |
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93 |
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5 |
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408 |
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415 |
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1766393634290139136 |