Affiliation:
1. Universidade de São Paulo, Brazil
Abstract
We studied the ecology and natural history of the globally threatened and poorly known Akodon lindberghi Hershkovitz, 1990 in Parque Nacional da Serra da Canastra (PNSC) and Juiz de Fora (JF), southeastern Brazil. From November 1998 to September 2001 a total of 131 individuals were captured in wire-cage live-traps and 52 by pitfalls traps. They were all marked and released at the site. The largest abundances were registered during the dry season, and most of the captures occurred in open habitats. The mean body mass of the two populations was significantly different (18.1 g at PNSC versus 13.1 g at JF; H = 46.2678, g.l.=2, p<0.001). In PNSC, individuals were reproductively active from August to February, and juveniles were present from May to August. The results suggest that the changes in vegetation structure caused by deforestation and intensive agricultural activities could increase the predation rate, affecting the mean body mass of the population.
Subject
Animal Science and Zoology
Reference39 articles.
1. Changing reproductive rates in a Neotropical forest rodent, Proechimys semispinosus;ADLER G. H.;Journal of Animal Ecology,1997
2. Population ecology of a Cerrado rodent community in central Brazil;ALHO C. J. R.;Revista Brasileira de Biologia,1985
3. Patterns of habitat utilization by small mammal populations in Cerrado biome of central Brazil;ALHO C. J. R.;Mammalia,1986
4. BioEstat 3.0: Aplicações Estatísticas nas Áreas das Ciências Biológicas e Médicas;AYRES M.,2003
5. Effects of flooding and wildfire on valley side wet campo rodents in central Brazil;BORCHERT M.;Revista Brasileira de Biologia,1983
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