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

• Yoshikawa, Hiroyuki

• Morishima, Kagayaki

• Fujimoto, Takafumi

• Arias-Rodriguez, Lenin

• Yamaha, Etsuro

• Arai, Katsutoshi

Bibliographic Information

Other Title

• Ploidy manipulation using diploid sperm

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.

Journal

• Journal of Applied Ichthyology

  Journal of Applied Ichthyology 24 (4), 410-414, 2008-08

  Blackwell Publishing

Keywords

• clone
• unreduced gametes
• polyploid
• hybrid
• chromosome manipulation

Details

• CRID: 1050282813974082176
• NII Article ID: 120001442845
• NII Book ID: AA11608685
• ISSN: 14390426
• ISSN: 01758659
• HANDLE: 2115/38891
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles