e-journal
First record of the new unisexual triploid form, one genome of Cobitis hankugensis and two genomes of Cobitis longicorpa from a wild population (Cobitidae, Teleostei), South Korea
Natural populations of unisexual species occur among fish, amphibians and reptiles through normal reproductive strategies such as gynogenesis and hybridogenesis (Cimino, 1971; Dawley, 1989; Goddard and Schultz, 1993). Such unisexual populations have been reported in about 90 biotypes, which are commonly known as polyploids (Dawley, 1989; Vrijenhoek et al., 1989; Vasil’ev et al., 2005; Janko et al., 2007a). Among loaches of the genus Cobitis, this is referred to as a hybrid/polyploid complex (Vasil’ev and Vasil’eva, 1982), and such complexes have been identified in Korea (Kim and Lee, 1990), China (Yu et al., 1989), Russia (Vasil’ev et al., 1989) and central Europe (Boron and Danilkiewicz, 1998; Janko
et al., 2007a,b, 2012; Choleva et al., 2008, 2012). In South Korea, the Cobitis hankugensis-longicorpa (formerly reported as Cobitis sinensis-longicorpa or Cobitis hankugensis-Iksookimia longicorpa) complex has been presumed to be a unisexual lineage originating from two diploid bisexual species, C. hankugensis and C. longicorpa (Kim and Lee, 1990, 1995, 2000). They are almost all females with rare occurrences of males, and are comprised of a diploid (2n = 49) and a triploid complex (3n = 73) that coexists and interacts reproductively with one or both of the two bisexual parental species, C. hankugensis and C. longicorpa (Kim and Lee, 1990, 2000; Saito et al., 2004; Park et al., 2011). The occurrence of this kind of triploid was provided from the butterfly lizard genus Leiolepis and a hemiclonal frog Rana esculenta originating from natural hybridization (Hotz et al., 1992; Darevsky and Kupriyanova, 1993; Vinogradov and Chubinishvili, 1999).
Tidak ada salinan data
Tidak tersedia versi lain