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Disruption of normal meiosis in artificial inter-populational hybrid females of Misgurnus loach

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Title: Disruption of normal meiosis in artificial inter-populational hybrid females of Misgurnus loach
Authors: Arias-Rodriguez, Lenin Browse this author
Yasui, George Shigueki Browse this author
Arai, Katsutoshi Browse this author →KAKEN DB
Keywords: clone
gynogenesis
microsatellite
polyploid
unreduced eggs
Issue Date: May-2009
Publisher: Springer
Journal Title: Genetica
Volume: 136
Issue: 1
Start Page: 49
End Page: 56
Publisher DOI: 10.1007/s10709-008-9299-x
Abstract: Artificial cross between two genetically different populations of Japanese Misgurnus loach was made to examine the reproductive capacity of the artificial inter-populational hybrid females. Ploidy status and microsatellite genotypes of the eggs laid by these hybrids were inferred from those determined in progenies developed by normal fertilization with haploid loach sperm, induced gynogenesis with UV-irradiated goldfish sperm and/or hybridization with intact goldfish sperm. Some hybrid females laid unreduced diploid eggs genetically identical to the mother. However, these diploid eggs could not develop by spontaneous gynogenesis, but grow to triploid by incorporation of a sperm nucleus. Other hybrid females laid haploid eggs together with diploid eggs and/or various aneuploid and polyploid eggs. Thus, a disruption of normal meiosis occurred in inter-populational hybrid females. The results suggested that the two populations should be so distant as to give rise to atypical formation of unreduced and other unusual eggs in their hybrids.
Type: article (author version)
URI: http://hdl.handle.net/2115/43019
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 荒井 克俊

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