Gynogenesis and sex determination in large-scale loach Paramisgurnus dabryanus (Sauvage)

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	Gynogenesis and sex determination in large-scale loach Paramisgurnus dabryanus (Sauvage)
	You, Cuihong 1,2; Yu, Xiaomu 1; Tan, Deqing 1; Tong, Jingou 1
刊名	AQUACULTURE INTERNATIONAL
	2008-06-01
卷号	16 期号:3 页码:203-214
关键词	large-scale loach (Paramisgumus dabryanus) temperature shock gynogenesis sex ratio sex determination
ISSN号	0967-6120
通讯作者	Tong, JO, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
中文摘要	Gynogenesis was induced using heterologous sperms in large-scale loach, Paramisgurnus dabryanus (Sauvage), in which a ZW/ZZ sex determination was previously proposed. Three microsatellite loci were used to monitor exclusive maternal inheritance of gynogenetic progenies. The results showed that high percentages of meiogynogens were produced at 4 min post-fertilization and mitogynogens were produced at 18 min post-fertilization by heat shocks, while meiotic gynogenesis was induced by cold shocks within a wide period and high heterozygosity was even observed in gynogens produced at 24 min post-fertilization. The sex ratios of the F, progenies in three gynogenetic families were significantly deviated from 1: 1 expectation with a female bias in two families and a male bias in one family (P < 0.05), and the other four gynogenetic families showed approximate 1:1 sex ratios. Moreover, the self-mating between gynogenetic F, progenies and mating between gynogenetic F, progenies and normal individuals produced all-female progenies or identical proportions of females and males. The data of sex ratios generally confirmed that the sex determination in large-scale loach was determined by the putative ZW/ZZ system, and the possible reasons causing the biased sex ratios are discussed.
英文摘要	Gynogenesis was induced using heterologous sperms in large-scale loach, Paramisgurnus dabryanus (Sauvage), in which a ZW/ZZ sex determination was previously proposed. Three microsatellite loci were used to monitor exclusive maternal inheritance of gynogenetic progenies. The results showed that high percentages of meiogynogens were produced at 4 min post-fertilization and mitogynogens were produced at 18 min post-fertilization by heat shocks, while meiotic gynogenesis was induced by cold shocks within a wide period and high heterozygosity was even observed in gynogens produced at 24 min post-fertilization. The sex ratios of the F, progenies in three gynogenetic families were significantly deviated from 1: 1 expectation with a female bias in two families and a male bias in one family (P < 0.05), and the other four gynogenetic families showed approximate 1:1 sex ratios. Moreover, the self-mating between gynogenetic F, progenies and mating between gynogenetic F, progenies and normal individuals produced all-female progenies or identical proportions of females and males. The data of sex ratios generally confirmed that the sex determination in large-scale loach was determined by the putative ZW/ZZ system, and the possible reasons causing the biased sex ratios are discussed.
学科主题	Fisheries
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Fisheries
研究领域[WOS]	Fisheries
关键词[WOS]	CATFISH CLARIAS-GARIEPINUS ; CYPRINUS-CARPIO L ; INDUCTION ; FISH ; DIFFERENTIATION ; TEMPERATURE ; TRIPLOIDY ; PRESSURE ; TELEOST ; SHOCKS
收录类别	SCI
语种	英语
WOS记录号	WOS:000256024300002
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8130]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	You, Cuihong,Yu, Xiaomu,Tan, Deqing,et al. Gynogenesis and sex determination in large-scale loach Paramisgurnus dabryanus (Sauvage)[J]. AQUACULTURE INTERNATIONAL,2008,16(3):203-214.
APA	You, Cuihong,Yu, Xiaomu,Tan, Deqing,&Tong, Jingou.(2008).Gynogenesis and sex determination in large-scale loach Paramisgurnus dabryanus (Sauvage).AQUACULTURE INTERNATIONAL,16(3),203-214.
MLA	You, Cuihong,et al."Gynogenesis and sex determination in large-scale loach Paramisgurnus dabryanus (Sauvage)".AQUACULTURE INTERNATIONAL 16.3(2008):203-214.