title: Karyotypic study of four gibbon forms provisionally considered as subspecies of Hylobates (Nomascus) concolor (Primates, Hylobatidae).
abstract: We report here a karyotypic study of 6 individuals of Hylobates concolor leucogenys, 2H, concolor siki, 3H, concolor gabriellae, 1 hybrid H, concolor leucogenys x H. concolor ski, 3 hybrid H. concolor gabriellae x H. concolor siki and 2 hybrid H. concolor hainanus x H. concolor leucogenys. Difficulties raised by the morphological identification of subspecies are discussed, and a new morphological characteristic for recognising female H. concolor gabriellae is described. Each of the 4 subspecies appears to be distinguishable on the basis of its karyotype: H. concolor leucogenys differs from H. concolor siki by a reciprocal translocation, from H. concolor hainanus by a pericentric inversion and from H. concolor gabriellae by the presence of both of these two rearrangements. However, these data do not allows us to identify a phylogenetic relationship between the subspecies because, with respect to the karyotypes, none occupies an ancestral position in comparison with the others.
authors.affiliation: CNRS, URA 620, Institut Curie, Section de Biologie, Paris, France.
authors.forename: J
authors.initials: J
authors.lastname: Couturier
authors.forename: J M
authors.initials: JM
authors.lastname: Lernould
mesh_terms: D000818:Animals; D002871:Chromosome Banding; D005260:Female; D006579:Heterozygote; D006922:Hylobates / Q000145:classification / Q000235:genetics*; D007621:Karyotyping / Q000662:veterinary; D008297:Male; D010802:Phylogeny; D014178:Translocation, Genetic