全球智库信息集成服务系统(G2TT): Gonadal alterations in male whitefish Coregonus fatioi: No evidence for genetic damage reducing viability in early life stages.

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来源类型	Article
规范类型	其他
DOI	10.3354/dao01952
	Gonadal alterations in male whitefish Coregonus fatioi: No evidence for genetic damage reducing viability in early life stages.
	Urbach D; Britschgi A; Jacob A; Bittner D; Bernet D; Wahli T; Yoccoz NG; Wedekind C
发表日期	2008
出处	Diseases of Aquatic Organisms 81 (2): 119-125
出版年	2008
语种	英语
摘要	In recent years, numerous cases of morphological gonadal alterations in fish have been recorded throughout the world and across a wide range of species. In the whitefish Coregonus fatioi from the pre-alpine Lake Thun (Switzerland), the frequency of gonadal alterations is particularly high and the variety of alteration types large. Little is known about the proximal causes and the direct consequences of these morphological features on population persistence. In particular, the potential for the observed alterations to be the phenotypic expression of reduced genetic quality has not yet been addressed. In this study, we used offspring survival during embryogenesis as a proximate indicator of male genetic quality and tested whether the presence of gonadal alterations in males is an indicator of reduced quality. Embryos resulted from in vitro fertilizations of gametes from 126 males and females. We found no significant correlation between embryo survival and gonadal alteration in adults. Our findings suggest that in C. fatioi of Lake Thun, alterations in gonad morphology are not a phenotypic expression of variation in genetic quality.
主题	Evolution and Ecology (EEP)
关键词	Embryo survival Genetic quality Gonadal alterations Lake Thun Whitefish
URL	http://pure.iiasa.ac.at/id/eprint/8499/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/128784
推荐引用方式 GB/T 7714	Urbach D,Britschgi A,Jacob A,et al. Gonadal alterations in male whitefish Coregonus fatioi: No evidence for genetic damage reducing viability in early life stages.. 2008.