期刊
ACTA THERIOLOGICA
卷 52, 期 2, 页码 197-204出版社
SPRINGER HEIDELBERG
DOI: 10.1007/BF03194215
关键词
marsupials; daily movements; food availability; spool and line device
类别
资金
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [98/05090-6] Funding Source: FAPESP
Food supply is an important determinant of animal movements. In the present study we tested the occurrence of an inverse relationship between daily movements of Marmosops paulensis (Tate, 1931) and their food supply. This species is a member of the family Didelphidae, occurring in areas of high elevation in the Brazilian Atlantic Forest. M. paulensis moved mostly over the ground, although the understory was also used. Mean daily range of M. paulensis estimated through spool-and-line device was about 0.40 ha; no differences were noted between body sizes and sexes. As expected, there was an inverse relationship between daily movements and food supply. This relationship resulted from the clumped distribution of fruits, particularly Piper rather than the sparser distribution of arthropods.
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