M. Sosa et al., FOOD AND REPRODUCTIVE PATTERNS OF RHOGEES SA-MINUTILLA (CHIROPTERA, VESPERTILIONIDAE) IN AN ARID ZONE OF THE VENEZUELAN ANDES, Revista de biologia tropical, 44(2), 1996, pp. 867-875
The diet and reproductive condition of the bat Rhogeessa minutilla was
evaluated throughout a year in a thorn shrub of the xerophitic pocket
of Lagunillas in the Venezuelan Andes. The analysis of fecal samples
showed that this vespertilionid bat eats small insects (3-12 mm) which
are represented in 10 orders and 29 families. Of the global diet, 84.
9% belongs to four orders: Diptera (42.5), Hymenoptera(18.2),Lepidopte
ra(13.3) and Coleoptera(10.9). The wide range of diet and seasonal rep
lacement of the prey taxa, seem to point out that R. minutilla is an o
pportunistic species in terms of the kind of prey, but selective in it
s size and hardness. The reproductive data reveals a single peak of pr
egnancies in the March-May period, and presence of juveniles in June-J
uly. This seems to indicate a seasonal monoestrous reproductive patter
n probably as a response to the major insect availability in the rainy
season.