Artículos de revistas
Cytogenetic Analysis Of Four Central Amazonian Species Of Colostethus (anura - Dendrobatidae) With A Diploid Complement Of 22 Chromosomes
Registro en:
Hereditas. , v. 139, n. 3, p. 189 - 198, 2003.
180661
10.1111/j.1601-5223.2003.01805.x
2-s2.0-1042304305
Autor
Veiga-Menoncello A.C.P.
Lima A.P.
Recco-Pimentel S.M.
Institución
Resumen
Colostethus marchesianus from the type locality and three related species had 2n = 22 chromosomes, which differed from most other Colostethus species that have 2n = 24 chromosomes. The species analyzed were morphologically similar and showed a conservative karyotype, although they could be distinguished from each other by their C-banding pattern. Additional NOR sites, heteromorphism in NOR size and heterochromatin, and an additional rDNA site detected by FISH, were observed. These data suggest that chromosomal rearrangements and hetrochromatin-related events may have contributed to the karyotype differentiation of these Colostethus. 139 3 189 198 Aguiar-Jr., O., Lima, A.P., Giaretta, A.A., Cytogenetics analysis of four poison frogs of the Epipedobates genus (Anura - Dendrobatidae) (2002) Herpetologica, 58, pp. 293-303 Bogart, J.P., The influence of life history on karyotypic evolution in frogs (1991) Amphibian Cytogenetics and Evolution, pp. 233-258. , In: Green, D. 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