Produção Nacional
Revisado por pares
Nine karyomorphs for spiny rats of the genus Proechimys (Echimyidae, Rodentia) from North and Central Brazil
2005; Brazilian Society of Genetics; Volume: 28; Issue: 4 Linguagem: Inglês
10.1590/s1415-47572005000500007
ISSN1678-4685
AutoresTaís Machado, Maria José de Jesus Silva, E R Leal-Mesquita, Ana Paula Carmignotto, Yatiyo Yonenaga-Yassuda,
Tópico(s)Genetic diversity and population structure
ResumoSpiny rats of the genus Proechimys are morphologically diverse, widely distributed and have diploid numbers ranging from 2n = 14-16 to 2n = 62. In this paper we present cytogenetical data and brief comments on morphological and biogeographical issues related to spiny rats. In our sample of 42 spiny rats collected from 12 Brazilian Amazonian tropical rainforest and the Cerrado (Brazilian savanna) sites we detected nine karyological entities: four different karyomorphs with 2n = 30, three with 2n = 28, one with 2n = 15 and one with 2n = 44. Based on qualitative morphological characters these karyomorphs can be allocated to five species within the goeldii, guyannensis and longicaudatus species groups.
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