Loss of allele diversity in introduced populations of the hermaphroditic bay scallop Argopecten irradians

doi:10.1016/j.aquaculture.2007.06.020

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	Loss of allele diversity in introduced populations of the hermaphroditic bay scallop Argopecten irradians
	Wang, Lingling ; Zhang, Huan ; Song, Linsheng ; Guo, Ximing
刊名	AQUACULTURE
	2007-10-03
卷号	271 期号:1-4 页码:252-259
关键词	Argopecten Irradians Non-native Species Hermaphrodite Microsatellite Genetic Variation Founder Population
ISSN号	0044-8486
DOI	10.1016/j.aquaculture.2007.06.020
文献子类	Article
英文摘要	The bay scallop Argopecten irradians is a hermaphroditic bivalve native to the Atlantic coast of the United States that was introduced to China for aquaculture production in 1982. It now supports a major aquaculture industry in China. Introduced species often start with limited genetic variability, which is problematic for the further selective breeding. Bay scallop aquaculture is exclusively hatchery based and as the initial introduction consisted of only 26 scallops, there have been concerns about inbreeding and inbreeding depression in cultured populations in China. In this study, eleven simple sequence repeat (SSR) markers were used to compare genetic variation in cultured populations from China with that in a natural population from the east coast of America. Although the difference in heterozygosity was small, the Chinese populations lost 9 of the 45 alleles (20%) found in the wild population. The reduced allele diversity suggests that the Chinese bay scallop populations experienced a bottleneck in genetic diversity that remains significant despite several recent introductions of new stocks aimed at expanding the gene pool. The loss of allele diversity may affect future efforts in selective breeding and domestication, and results of this study highlight the need for additional introductions, advanced breeding programs that minimize inbreeding and continued genetic monitoring. (c) 2007 Elsevier B.V. All rights reserved.; The bay scallop Argopecten irradians is a hermaphroditic bivalve native to the Atlantic coast of the United States that was introduced to China for aquaculture production in 1982. It now supports a major aquaculture industry in China. Introduced species often start with limited genetic variability, which is problematic for the further selective breeding. Bay scallop aquaculture is exclusively hatchery based and as the initial introduction consisted of only 26 scallops, there have been concerns about inbreeding and inbreeding depression in cultured populations in China. In this study, eleven simple sequence repeat (SSR) markers were used to compare genetic variation in cultured populations from China with that in a natural population from the east coast of America. Although the difference in heterozygosity was small, the Chinese populations lost 9 of the 45 alleles (20%) found in the wild population. The reduced allele diversity suggests that the Chinese bay scallop populations experienced a bottleneck in genetic diversity that remains significant despite several recent introductions of new stocks aimed at expanding the gene pool. The loss of allele diversity may affect future efforts in selective breeding and domestication, and results of this study highlight the need for additional introductions, advanced breeding programs that minimize inbreeding and continued genetic monitoring. (c) 2007 Elsevier B.V. All rights reserved.
学科主题	Fisheries ; Marine & Freshwater Biology
URL标识	查看原文
语种	英语
WOS记录号	WOS:000249874600027
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/5669]
专题	海洋研究所_实验海洋生物学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Rutgers State Univ, Inst Marine & Coastal Sci, Haskin Shellfish Res Lab, Port Norris, NJ 08349 USA
推荐引用方式 GB/T 7714	Wang, Lingling,Zhang, Huan,Song, Linsheng,et al. Loss of allele diversity in introduced populations of the hermaphroditic bay scallop Argopecten irradians[J]. AQUACULTURE,2007,271(1-4):252-259.
APA	Wang, Lingling,Zhang, Huan,Song, Linsheng,&Guo, Ximing.(2007).Loss of allele diversity in introduced populations of the hermaphroditic bay scallop Argopecten irradians.AQUACULTURE,271(1-4),252-259.
MLA	Wang, Lingling,et al."Loss of allele diversity in introduced populations of the hermaphroditic bay scallop Argopecten irradians".AQUACULTURE 271.1-4(2007):252-259.