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Ploidy manipulation using diploid sperm in the loach, Misgurnus anguillicaudatus : a review

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Title: Ploidy manipulation using diploid sperm in the loach, Misgurnus anguillicaudatus : a review
Other Titles: Ploidy manipulation using diploid sperm
Authors: Yoshikawa, Hiroyuki Browse this author
Morishima, Kagayaki Browse this author
Fujimoto, Takafumi Browse this author
Arias-Rodriguez, Lenin Browse this author
Yamaha, Etsuro Browse this author →KAKEN DB
Arai, Katsutoshi Browse this author →KAKEN DB
Keywords: clone
unreduced gametes
chromosome manipulation
Issue Date: Aug-2008
Publisher: Blackwell Publishing
Journal Title: Journal of Applied Ichthyology
Volume: 24
Issue: 4
Start Page: 410
End Page: 414
Publisher DOI: 10.1111/j.1439-0426.2008.01129.x
Abstract: In the loach, Misgurnus anguillicaudatus (Teleoste: Cobitidae), diploid sperm can be obtained from natural tetraploid individuals with four sets of homologous chromosomes. Using diploid sperm, various kinds of polyploids and androgenetic diploids have been produced. Cryptic clonal lineages are also recognized in wild populations of the loach. They produce unreduced diploid eggs genetically identical to somatic cells of the mother fish and most diploid eggs develop gynogenetically as a member of the clone. However, some eggs develop to triploid and/or diploid-triploid mosaic individuals by incorporation of sperm nucleus. Diploid-triploid mosaic males exclusively generate fertile diploid sperm with clonal genotypes. Such diploid sperm can also be obtained from artificially sex-reversed clonal individuals. Recent population studies suggested that Japanese M. anguillicaudatus might not be a single species, but a complex involving cryptic species, because wild populations exhibited genetic differentiation at interspecific level. This implies possible relationship between atypical reproduction and natural hybridization in the loach.
Rights: The definitive version is available at
Type: article (author version)
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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