Population dynamics of Euryoryzomys russatus and Oligoryzomys nigripes (Rodentia, Cricetidae) in an Atlantic forest area, Santa Catarina Island, Southern Brazil

Biotemas

Pâmela Castro Antunes¹  Luiz Gustavo Rodrigues Oliveira-Santos¹  Marilena Altenfelder Arruda Campos¹  Maurício Eduardo Graipel¹ 

关键词: Desterro Environmental Conservation Unit;    Effects of temperature and rainfall;    Sex ratio;    Small rodents;    Reproduction;   

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/10.5007/2175-7925.2009v22n2p143The population dynamics and reproductive issues of two species of rodents of the family Cricetidae, Rice Rats (Euryoryzomys russatus) and Pygmy Rice Rats (Oligoryzomys nigripes), were studied for 24 months in an Atlantic Forest area in southern Brazil. Euryoryzomys russatus presented density-dependent population fluctuation, and recruitment was positively associated with temperature. Oligoryzomys nigripes displayed the lowest abundance, greatest population fluctuation and shortest permanence time. Abundance and survival were found to be negatively correlated with temperature. The sex ratio was not biased in any of the species.

【 授权许可】

Unknown