Cytogenetics of two central Amazonian species of Colostethus (Anura, Dendrobatidae) with nidicolous tadpoles
A cytogenetic study of two central Amazonian species of Colostethus with nidicolous tadpoles indicated that Colostethus stepheni had 2n=24 chromosomes, whereas Colostethus nidicola had 2n=22 chromosomes. These species also differed in their NOR localization and C-banding pattern. These results sugge...
| Autor principal: | Veiga-Menoncello, Ana Cristina Prado |
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| Outros Autores: | Pimentel, Shirlei Maria Recco, Lima, Albertina Pimental |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Caryologia
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/19005 |
| Resumo: |
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A cytogenetic study of two central Amazonian species of Colostethus with nidicolous tadpoles indicated that Colostethus stepheni had 2n=24 chromosomes, whereas Colostethus nidicola had 2n=22 chromosomes. These species also differed in their NOR localization and C-banding pattern. These results suggest that karyotypic variation with a probable reduction in chromosome number and the presence of nidicolous tadpoles are independent events that may have occurred more than once during dendrobatid evolution. © 2003 Taylor & Francis Group, LLC. |