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Simultaneous formation of haploid, diploid and triploid eggs in diploid-triploid mosaic loaches

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Title: Simultaneous formation of haploid, diploid and triploid eggs in diploid-triploid mosaic loaches
Other Titles: 1N, 2N and 3N eggs of mosaic loaches
Authors: Yoshikawa, H. Browse this author
Morishima, K. Browse this author
Fujimoto, T. Browse this author
Yamaha, E. Browse this author
Arai, K. Browse this author →KAKEN DB
Keywords: Misgurnus anguillicaudatus
Issue Date: Oct-2007
Publisher: Fisheries Society of the British Isles
Journal Title: Journal of Fish Biology
Volume: 71
Issue: sb
Start Page: 250
End Page: 263
Publisher DOI: 10.1111/j.1095-8649.2007.01608.x
Abstract: In the loach Misgurnus anguillicaudatus, very few diploid-triploid mosaic individuals, which are generated by accidental incorporation of the sperm nucleus into diploid eggs produced by clonal diploid loach, occur in nature. Ploidy examination of gynogenetic progeny induced by activation with UV-irradiated goldfish sperm indicated that diploid-triploid mosaic females laid haploid, diploid and triploid eggs, simultaneously. In addition, triploid eggs exhibited larger egg sizes. Microsatellite genotyping of diploid-triploid mosaics revealed that triploid genotypes of mosaic mothers consisted of two alleles specific to the clonal diploid and one allele from normal diploid male. Diploid eggs from mosaic mother had genotypes absolutely identical to the diploid clone. Most genotypes of triploid eggs were identical to the mosaic mother, and one of three alleles of the mosaic mother was transmitted to haploid eggs. These results suggested that diploid germ cells, which had a clonal genome, were differentiated into clonal diploid eggs, and triploid and haploid eggs were produced from triploid germ cells in the same ovary of mosaic individuals.
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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