The lowest diploid number in Testudines: Banding patterns, telomeric and 45S rDNA FISH in Peltocephalus dumerilianus, 2n = 26 and FN = 52 (Pleurodira, Podocnemididae)

Karen Ventura; Camila N Moreira; Renata Moretti; Yatiyo Yonenaga-Yassuda; Miguel T Rodrigues

doi:10.1590/s1415-47572014000100011

The lowest diploid number in Testudines: Banding patterns, telomeric and 45S rDNA FISH in Peltocephalus dumerilianus, 2n = 26 and FN = 52 (Pleurodira, Podocnemididae)

Genet Mol Biol. 2014 Mar;37(1):61-3. doi: 10.1590/s1415-47572014000100011. Epub 2013 Feb 28.

Authors

Karen Ventura¹, Camila N Moreira¹, Renata Moretti², Yatiyo Yonenaga-Yassuda¹, Miguel T Rodrigues²

Affiliations

¹ Departamento de Genética e Biologia Evolutiva, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil .
² Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, Brazil .

Abstract

The karyotype of the big-headed Amazon River turtle, Peltocephalus dumerilianus, is characterized based on a sample of seven juveniles from Reserva Biológica do Rio Trombetas, Pará State, Brazil (1°30' S, 56°34' W). Here we present the first results on GTG and CBG-banding patterns, Ag-NOR staining and FISH, with telomeric and 45S rDNA sequences as probes. A cytogenetic comparison with related Podocnemidae is also provided.

Keywords: Pelomedusoides; big-headed Amazon River turtle; molecular cytogenetics.