Descrição cariotípica de duas espécies do gênero Akodon (Rodentia, Sigmodontinae) no norte do estado do Rio Grande do Sul, Brasil

Biotemas

Bruno Busnello Kubiak²  Jorge Reppold Marinho³  Caroline Badzinski¹  Daniel Galiano²  Cassiano Estevan³ 

[1] Universidade Federal da Fronteira Sul, Campus de Cerro Largo;Universidade Federal do Rio Grande do Sul;Universidade Regional Integrada do Alto Uruguai e das Missões, Campus de Erechim

关键词: Cariótipo;    Cricetidae;    Floresta com araucária;    Pequenos mamíferos;   

DOI  :  

学科分类：生物科学（综合）

来源: Universidade Federal de Santa Catarina * Centro de Ciencias Biologicas

【 摘 要 】

http://dx.doi.org/10.5007/2175-7925.2015v28n3p187Among the sigmodontine rodents, the genusAkodonis the second in numerical terms, with about 45 recognized species. In the Rio Grande do Sul state, there are 5 registered species. This article shows data on the distribution of the species of the genusAkodonin the northern Rio Grande do Sul state, as well as a description of the karyotypes of species from this region are shown. Six localities were sampled from August 2008 to May 2010. A total of 44 specimens underwent cytogenetic analysis and 2 species were identified ( Akodon montensisandAkodon paranaensis ). The karyotype ofA. montensiswas 2n = 24, FN = 44 and that ofA. paranaensiswas 2n = 44, NF = 46. Data on abundance and distribution of these species corroborate the pattern described in other studies with the rodent community in the northern portion of the state, where theAkodonspecies are seen as dominant. The fact that only A. montensis and A. paranaensis were captured is an indication that these two species are the only ones with confirmed occurrence in the northern portion of this state.

【 授权许可】

Unknown