Title: Karyotypic Variation in the Genus Megaelosia (Anura, Hylodinae) with the First Description of a B-Chromosome in a Leptodactylid Frog
Abstract: Three species of the genus Megaelosia (Megaelosia massarti, Megaelosia boticariana, and Megaelosia lutzae) were studied karyotypically using conventional Giemsa staining, C-banding, and NOR techniques. Megaelosia lutzae had 2n = 32 chromosomes, a new diploid number for this genus and for the subfamily Hylodinae. Two morphotypes of B-chromosomes were found in two specimens of M. massarti. C-banding patterns and NOR location varied among the species. Nevertheless, some chromosome pairs, as well as the NOR-bearing secondary constriction and the large pericentromeric C-block on the short arm of chromosome 10, were consistent among the three species. Megaelosia differs markedly from other Hylodinae and Dendrobatidae in terms of karyotype.
Publication Year: 2003
Publication Date: 2003-02-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 23
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