Chromosome analysis of five Brazilian species of poison frogs (Anura: Dendrobatidae)

Autor(es)

Rodrigues, Paula Camargo ^[1] ; Aguiar, Odair ^[2] ; Serpieri, Flavia ^[1] ; Lima, Albertina Pimentel ^[3] ; Uetanebaro, Masao ^[4] ; Recco-Pimentel, Shirlei Maria ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Biol, Dept Anat Biol Celular & Fisiol, BR-13083863 Campinas, SP - Brazil

^[2] Univ Fed Sao Paulo, Dept Biociencias, BR-11060001 Sao Paulo - Brazil

^[3] Inst Nacl Pesquisas Amazonas, BR-69011970 Manaus, Amazonas - Brazil

^[4] Univ Fed Mato Grosso do Sul, Dept Biol, BR-70070900 Campo Grande, MS - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF GENETICS; v. 90, n. 1, p. 31-37, APR 2011.
• Citações Web of Science: 3

Resumo

Dendrobatid frogs have undergone an extensive systematic reorganization based on recent molecular findings. The present work describes karyotypes of the Brazilian species Adelphobates castaneoticus, A. quinquevittatus, Ameerega picta, A. galactonotus and Dendrobates tinctorius which were compared to each other and with previously described related species. All karyotypes consisted of 2n = 18 chromosomes, except for A. picta which had 2n = 24. The karyotypes of the Adelphobates and D. tinctorius species were highly similar to each other and to the other 2n = 18 previously studied species, revealing conserved karyotypic characteristics in both genera. In recent phylogenetic studies, all Adelphobates species were grouped in a clade separated from the Dendrobates species. Thus, we hypothesized that their common karyotypic traits may have a distinct origin by chromosome rearrangements and mutations. In A. picta, with 2n = 24, chromosome features of pairs from 1 to 8 are shared with other previously karyotyped species within this genus. Hence, the A. picta data reinforced that the C-banding pattern and the NOR location are species-specific traits in the genus Ameerega. Moreover, the Ameerega monophyletism proposed by previous phylogenetic studies indicates that the karyotypic differences among species in this genus result from a long divergence time. (AU)

• Processo FAPESP: 02/12139-9 - Investigação das relações filogenéticas dos Pseudinae (Anura, Hylidae), através da análise de sequências de genes mitocondriais
• Beneficiário: Shirlei Maria Recco-Pimentel
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 05/05132-6 - Estudo da ultra-estrutura dos espermatozoides de dendrobates tinctorius e de epipedobates machallila (anura, dendrobatidae).
• Beneficiário: Paula de Camargo Rodrigues
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica