Produção Nacional
Dinâmica populacional de marsupiais e roedores no Parque Municipal da Lagoa do Peri, Ilha de Santa Catarina, sul do Brasil
2006; SAREM; Volume: 13; Issue: 1 Linguagem: Inglês
ISSN
1666-0536
AutoresMaurício Eduardo Graipel, Jorge José Cherem, Emygdio L. A. Monteiro‐Filho, Luiz Glock,
Tópico(s)Animal Ecology and Behavior Studies
ResumoPopulation dynamics of marsupials and rodents in Parque Municipal da Lagoa do Peri, Santa Catarina Island, southern Brazil. A two-year mark-recapture study of small mammals was conducted in an area of Atlantic Forest hillside in the state of Santa Catarina, Brazil. Four species of marsupial and seven species of rodent were captured during 12 132 trap-nights. Aspects of population dynamics and natural history are dis- cussed for each common species. The sex ratio was biased toward males for all species. Oryzomys russatus, Didelphis aurita and Akodon montensis had the highest population densities, the least amount of variation in population density and an inverse relationship between survivorship rates and population densities. Micoureus paraguayanus, Nectomys squamipes and O. angouya, registered the higher population densities after continual sur- vivorship rates. The recruitment rates were low for most species ( 50%). Population densities of D. aurita, O. nigripes and O. aff. judex increased in cold and dry periods. The marsupials reproduced seasonally from late winter until the end of the summer, whereas rodents reproduced throughout the year. No species were long-lived, with average life-span < six months.
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