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

Autores

  • Pâmela Castro Antunes
  • Marilena Altenfelder Arruda Campos
  • Luiz Gustavo Rodrigues Oliveira-Santos
  • Maurício Eduardo Graipel

DOI:

https://doi.org/10.5007/2175-7925.2009v22n2p143

Resumo

The 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.

Biografia do Autor

Pâmela Castro Antunes

Departamento de Ecologia e Zoologia, Centro de Ciências Biológicas
Universidade Federal de Santa Catarina, CEP 88040-970, Florianópolis – SC, Brasil

Marilena Altenfelder Arruda Campos

Instituto Nacional de Pesquisas da Amazônia, Laboratório de Etnoecologia Indígena
Manaus – AM, Brazil

Luiz Gustavo Rodrigues Oliveira-Santos

Departamento de Ecologia e Zoologia, Centro de Ciências Biológicas
Universidade Federal de Santa Catarina, CEP 88040-970, Florianópolis – SC, Brasil

Maurício Eduardo Graipel

Departamento de Ecologia e Zoologia, Centro de Ciências Biológicas
Universidade Federal de Santa Catarina, CEP 88040-970, Florianópolis – SC, Brasil

Downloads

Publicado

2009-08-11

Edição

Seção

Artigos