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学科主题: Fisheries
题名: Gynogenesis and sex determination in large-scale loach Paramisgurnus dabryanus (Sauvage)
作者: You, Cuihong1, 2; Yu, Xiaomu1; Tan, Deqing1; Tong, Jingou1
通讯作者: Tong, JO, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
关键词: large-scale loach (Paramisgumus dabryanus) ; temperature shock ; gynogenesis ; sex ratio ; sex determination
刊名: AQUACULTURE INTERNATIONAL
发表日期: 2008-06-01
DOI: 10.1007/s10499-007-9138-6
卷: 16, 期:3, 页:203-214
收录类别: SCI
文章类型: Article
部门归属: [You, Cuihong; Yu, Xiaomu; Tan, Deqing; Tong, Jingou] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [You, Cuihong] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Fisheries
研究领域[WOS]: Fisheries
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.
关键词[WOS]: CATFISH CLARIAS-GARIEPINUS ; CYPRINUS-CARPIO L ; INDUCTION ; FISH ; DIFFERENTIATION ; TEMPERATURE ; TRIPLOIDY ; PRESSURE ; TELEOST ; SHOCKS
语种: 英语
WOS记录号: WOS:000256024300002
ISSN号: 0967-6120
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/8130
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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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

Recommended Citation:
You, Cuihong; Yu, Xiaomu; Tan, Deqing; Tong, Jingou.Gynogenesis and sex determination in large-scale loach Paramisgurnus dabryanus (Sauvage),AQUACULTURE INTERNATIONAL,2008,16(3):203-214
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