Helena Godoy Bergallo, William E. Magnusson
Factors affecting the use of space by two rodent species in Brazilian Atlantic forest
The main purpose of this study was to determine whether the maximum
distance traveled and home range area of Nectomys squamipes and Oryzomys
russatus differ between sexes, breeding seasons and species. We also evaluated
whether rainfall and food availability influenced the maximum distance traveled.
Rats were trapped monthly from February 1993 to January 1995 in an
area of Atlantic forest, Brasil. Maximum distance traveled by N. squamipes
was not related to mass and was longer during the breeding season for males.
There were no differences between seasons in the distances traveled by
O. russatus, but larger males traveled further. Food availability and rainfall
had no effect on the distance traveled by each species. Home ranges of male
N. squamipes were larger than those of females during the breeding season,
but home ranges did not differ between the sexes in O. russatus. Differences
between the two species in movement may be related to differences in mating
systems, which are probably promiscuous in N. squamipes and monogamous
in O. russatus.
Mammalia, Walter de Gruyter
Print ISSN: 0025-1461
Volume: 68, 10/2004
Pages: 121 - 132
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