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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
Peer-reviewed Journal Articles, etc >
Spontaneous polyploidization in critically endangered Acipenser mikadoi
| Title: | Spontaneous polyploidization in critically endangered Acipenser mikadoi |
| Authors: | Havelka, Miloš Browse this author | | Zhou, He Browse this author | | Hagihara, Seishi Browse this author | | Ichimura, Masaki Browse this author | | Fujimoto, Takafumi Browse this author | | Yamaha, Etsuro Browse this author →KAKEN DB | | Adachi, Shinji Browse this author →KAKEN DB | | Arai, Katsutoshi Browse this author →KAKEN DB |
| Keywords: | Acipenseriformes | | DNA content | | Unreduced gamete | | Genome duplication | | Second polar body | | Meiosis |
| Issue Date: | Jul-2017 |
| Journal Title: | Fisheries Science |
| Volume: | 83 |
| Issue: | 4 |
| Start Page: | 587 |
| End Page: | 595 |
| Publisher DOI: | 10.1007/s12562-017-1083-3 |
| Abstract: | We investigated the source of spontaneous polyploidization in the critically endangered Acipenser mikadoi. Fourteen sib progeny of A. mikadoi and 11 hybrids between an A. mikadoi female and a Huso dauricus male, all showing atypically high ploidy, were analysed. Parent assignment based on five highly polymorphic microsatellite markers confirmed spontaneous duplication of maternal chromosome sets via retention of the second polar body to be the source of spontaneous polyploidization. To our knowledge, this provides the first evidence of the maternal origin of spontaneous polyploidization in A. mikadoi. Factorial correspondence analysis of the multilocus microsatellite genotypes placed the parent fish of spontaneous polyploids in clearly delineated clusters of A. mikadoi and H. dauricus, and parent fish had mitochondrial control region haplotypes corresponding to their presumed species. Thus, parent fish were confirmed to be of pure genetic origin, and hybridization did not promote the observed spontaneous polyploidization. |
| Rights: | The final publication is available at www.springerlink.com via http://dx.doi.org/10.1007/s12562-017-1083-3 |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/70888 |
| 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)
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Submitter: 荒井 克俊
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