Teugels G.G., Ozouf-Costazt C., Legendre Marc, Parrent M. (1992). A karyological analysis of the artificial hybridization between Clarias gariepinus (Burchell, 1822) and Heterobranchus longifilis Valenciennes, 1840 (Pisces; Clariidae). Journal of Fish Biology, 40, p. 81-86. ISSN 0022-1112.
Titre du document
A karyological analysis of the artificial hybridization between Clarias gariepinus (Burchell, 1822) and Heterobranchus longifilis Valenciennes, 1840 (Pisces; Clariidae)
Année de publication
1992
Type de document
Article
Auteurs
Teugels G.G., Ozouf-Costazt C., Legendre Marc, Parrent M.
Source
Journal of Fish Biology, 1992,
40, p. 81-86 ISSN 0022-1112
A karyological analysis of an artificial hybridization (reciprocical crosses) between two African clariid catfish, Clarias gariepinus (Burchell, 1822) and Heterobranchus longifilis Valencienne, 1840, was performed. C. gariepinus has a standard karyotype of 2n = 56, while H. longifilis has 2n = 52. The hybrids revealed an intermediate karyotype (2n = 54), and it appears as if they have totalized the haploid chromosome number of both parental species, excluding gynogenesis or androgenesis. The hybridal karyotype is considered as aneuploid, although the hybrids proved to be fertile. No variation was found in the hybride karyotype. (Résumé d'auteur)
