Inbreeding depression for various traits in two cultured populations of the American bay scallop, Argopecten irradians irradians Lamarck (1819) introduced into China

doi:10.1016/j.jembe.2008.06.027

	Inbreeding depression for various traits in two cultured populations of the American bay scallop, Argopecten irradians irradians Lamarck (1819) introduced into China
	Zheng, Huaiping 1,2; Zhang, Guofan 1; Guo, Ximing 3; Liu, Xiao 1
刊名	JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY
	2008-09-12
卷号	364 期号:1 页码:42-47
关键词	Argopecten Irradians Irradians Cultured Population Inbreeding Depression Inbreeding Level Mass-mating Self-fertilization
ISSN号	0022-0981
DOI	10.1016/j.jembe.2008.06.027
文献子类	Article
英文摘要	This paper examines the effect of inbreeding level of population on the magnitude of inbreeding depression expressed by comparing them between two cultured populations (A and B) in the hermaphroditic animal of the bay scallop Argopecten irradians irradians. Population A is expected to have less genetic variations and higher inbreeding level due to longer cultured history (20 generations) and less "ancestral" individuals (26 individuals) than population B due to shorter cultured history (4 generations) and more "ancestral" individuals (406 individuals). Two groups within each population were produced, one using self-fertilization and one using mass-mating within the same population. Selfed offspring (AS and BS) from two populations both had lower fitness components than their mass-mated counterparts (AM and BM) and exhibited inbreeding depression for all examined traits, e.g. lower hatching, less viability and slower growth, indicating that inbreeding depression is a common feature in this animal. Fitness components in all traits of offspring from population A significantly differed those from population B and the magnitude of inbreeding depression for all traits in population A with higher inbreeding level was significantly smaller than that in population B with lower inbreeding level, indicating that both fitness components and magnitude of inbreeding depression were significantly affected by inbreeding level of populations and genetic load harbored in population A may be partially purged through inbreeding. Moreover, the magnitude of inbreeding depression in the two populations both varied among traits and life history stages. The present results support the partial-dominance hypothesis of inbreeding depression. (C) 2008 Elsevier B.V. All rights reserved.; This paper examines the effect of inbreeding level of population on the magnitude of inbreeding depression expressed by comparing them between two cultured populations (A and B) in the hermaphroditic animal of the bay scallop Argopecten irradians irradians. Population A is expected to have less genetic variations and higher inbreeding level due to longer cultured history (20 generations) and less "ancestral" individuals (26 individuals) than population B due to shorter cultured history (4 generations) and more "ancestral" individuals (406 individuals). Two groups within each population were produced, one using self-fertilization and one using mass-mating within the same population. Selfed offspring (AS and BS) from two populations both had lower fitness components than their mass-mated counterparts (AM and BM) and exhibited inbreeding depression for all examined traits, e.g. lower hatching, less viability and slower growth, indicating that inbreeding depression is a common feature in this animal. Fitness components in all traits of offspring from population A significantly differed those from population B and the magnitude of inbreeding depression for all traits in population A with higher inbreeding level was significantly smaller than that in population B with lower inbreeding level, indicating that both fitness components and magnitude of inbreeding depression were significantly affected by inbreeding level of populations and genetic load harbored in population A may be partially purged through inbreeding. Moreover, the magnitude of inbreeding depression in the two populations both varied among traits and life history stages. The present results support the partial-dominance hypothesis of inbreeding depression. (C) 2008 Elsevier B.V. All rights reserved.
学科主题	Ecology ; Marine & Freshwater Biology
URL标识	查看原文
语种	英语
WOS记录号	WOS:000260190200007
公开日期	2010-12-24
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/6125]
专题	海洋研究所_海洋生物技术研发中心
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Expt Marine Biol, Qingdao 266071, Peoples R China 2.Shantou Univ, Inst Marine Biol, Shantou 515063, Peoples R China 3.Rutgers State Univ, Hoskin Shelifish Res Lab, Inst Marine & Coastal Sci, Port Norris, NJ 08349 USA
推荐引用方式 GB/T 7714	Zheng, Huaiping,Zhang, Guofan,Guo, Ximing,et al. Inbreeding depression for various traits in two cultured populations of the American bay scallop, Argopecten irradians irradians Lamarck (1819) introduced into China[J]. JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY,2008,364(1):42-47.
APA	Zheng, Huaiping,Zhang, Guofan,Guo, Ximing,&Liu, Xiao.(2008).Inbreeding depression for various traits in two cultured populations of the American bay scallop, Argopecten irradians irradians Lamarck (1819) introduced into China.JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY,364(1),42-47.
MLA	Zheng, Huaiping,et al."Inbreeding depression for various traits in two cultured populations of the American bay scallop, Argopecten irradians irradians Lamarck (1819) introduced into China".JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY 364.1(2008):42-47.