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Title: Movement Patterns of Field Rodents in Hawaii 
Author: Tomich, P. Quentin
Date: 1970-04
Publisher: University of Hawai'i Press
Citation: Tomich PQ. 1970. Movement patterns of field rodents in Hawaii. Pac Sci 24(2): 195-234.
Abstract: The setting for a 10-year study of the ecology of the plague organism
is described. Four rodents, Mus musculas, Rattus exulans, R. rattus and R. norvegicus,
were investigated during 1959-64 by the mark-and-release method, with
numerous grids and lines of traps set in coastal fields of sugar cane and in adjacent
uncultivated lands, primarily rugged gulches. Fluctuations in population densities
are related to season, to cultural practices for sugar cane, and to the movement and
home range of rodents. Harvest of the cane is a catastrophe for rodent populations
in the fields, and few that escape to adjacent lands survive to become established
there. Patterns of movement are remarkably similar in the four species, but gradients
toward longer movements follow trends for greater body size. Significant
differences in distances moved are derived between species and between sexes within
species, in time and in different habitats. Home range and local movement of the
field rodents of Hawaii have many parallels with those of the same species as
reported in other regions of the world and in other cultural surroundings, but
direct comparisons are seldom possible because of differences in methods used and
in environmental conditions.
ISSN: 0030-8870

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