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Aneuploid progenies of triploid hybrids between diploid and tetraploid loach Misgurnus anguillicaudatus in China

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Title: Aneuploid progenies of triploid hybrids between diploid and tetraploid loach Misgurnus anguillicaudatus in China
Authors: Li, Ya-Juan Browse this author
Gao, Yang-Chun Browse this author
Zhou, He Browse this author
Ma, Hai-Yan Browse this author
Lin, Zhong-Qiao Browse this author
Ma, Tian-Yu Browse this author
Sui, Yi Browse this author
Arai, Katsutoshi Browse this author →KAKEN DB
Keywords: Bivalent
Gamete
Meiosis
Polyploid
Trivalent
Univalent
Issue Date: Oct-2016
Publisher: Springer
Journal Title: Genetica
Volume: 144
Issue: 5
Start Page: 601
End Page: 609
Publisher DOI: 10.1007/s10709-016-9928-8
PMID: 27660255
Abstract: Triploid Chinese loach, Misgurnus anguillicaudatus, hybrids between tetraploids from Hubei Province and diploids from Liaoning Province were mated with either diploid wild-type or triploid hybrids to analyze viability and ploidy of the resultant progenies. Both triploid males and females generated fertile gametes, but progenies from the crosses using gametes of triploid hybrids did not survive beyond the larval stages. In crosses between wildtype diploid females and triploid hybrid males, embryos ranging from 2.2n to 2.6n were predominant with a mode of either 2.4n (chromosome numbers 59, 60, 61) or 2.5n (chromosome numbers 62, 63). Those from the crosses between triploid hybrid females and diploid males gave a modal ploidy level at approximately 2.5n in one case, but a shift to a higher ploidy level was observed in other embryos. In the progenies between triploid hybrid females and males, the ploidy level at approximately 3.0n (chromosome numbers 74, 75, 76) was most frequent. The cytogenetic results of the progenies suggest the production of aneuploid gametes with a modal ploidy level at approximately 1.5n in triploid hybrids. However, a shift to higher chromosome numbers in gametes was observed in certain cases, suggesting the involvement of mortality selection of gametes and/or zygotes with lower chromosome numbers.
Rights: The final publication is available at Springer via http://dx.doi.org/http://dx.doi.org/10.1007/s10709-016-9928-8
Type: article (author version)
URI: http://hdl.handle.net/2115/67219
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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