Natural history and demography of Thalpomys lasiotis (Thomas, 1916), a rare and endemic species from the Brazilian savanna

• Autorzy: Ribeiro R. , Rocha C. R. , Marinho-Filho J.
• Języki publikacji: EN

Abstrakty

EN

Hairy-eared cerrado mouse Thalpomys lasiotis is an endemic species of the cerrado biome. It can be found in open habitats, but its distribution is patchy and population numbers are unknown. In this paper, we describe, for the first time, aspects related to the ecology and natural history of T. lasiotis, detailing demographic parameters such as population densities, reproduction, home range, and longevity of this endemic and rare species. We captured, marked, and recaptured 55 individuals of T. lasiotis in Águas Emendadas Ecological Station, located in the northeast of the Federal District, Brazil. We found significant differences on population numbers and densities between the dry and wet seasons. Densities and population numbers apparently are affected by the seasonality of food resources. Moreover, the breeding season is seasonal, and both males and females were reproductively active during the wet season. T. lasiotis showed a permanence time ranging from 2–9 months, which means that individuals can survive for at least 9 months in natural habitats. The home ranges of males and females of T. lasiotis were not significantly different. However, males have larger home ranges than females and the mean distance moved by males was higher than the distance moved by females, which is consistent with the hypothesis that males belonging to polygynous species tend to move greater distances to avoid agonistic encounters and to search sexual partners.

• Wydawca: -
• Czasopismo: Acta Theriologica
• Rocznik: 2011
• Tom: 56
• Numer: 3
• Opis fizyczny: p.275-282,fig.,ref.

Twórcy

autor

Ribeiro R.

• Departamento de Zoologia, Campus Universitario Darcy Ribeiro, Instituto de Biologia, Universidade de Brasilia, Asa Nortc, Brasilia, DF 70910-900, Brazil

autor

Rocha C. R.

• Departamento de Zoologia, Campus Universitario Darcy Ribeiro, Instituto de Biologia, Universidade de Brasilia, Asa Nortc, Brasilia, DF 70910-900, Brazil

autor

Marinho-Filho J.

• Departamento de Zoologia, Campus Universitario Darcy Ribeiro, Instituto de Biologia, Universidade de Brasilia, Asa Nortc, Brasilia, DF 70910-900, Brazil

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Identyfikatory

DOI

10.1007/s13364-011-0026-0