Thesis (BS Biology) -- University of the Philippines Mindanao, 2011

Monthly population of bats was determined by using mist netting method for nine consecutive months from May 2010 to January 2011. A total of six species was identified with Ptenochirus jagori being the most abundant followed by, Cynopterus brachyotis, Ptenochirus minor, Macroglossus minimus, Rousettus amplexicaudatus and Haplonycteris fischeri. The high number of caught individuals in some months coincided with the flowering of the fruit trees. More males were captured than females except for R. amplexicaudauts because all captured individuals were females. These female individuals may have had high demand nutritionally in the months where they were caught. High number of males for most individuals could be accounted for the possible presence of roosting sites nearby for these species. The number of adults was also more dominant than juveniles except for C. brachyotis because of the ability of this species to survive in heavily disturbed areas. Other farms near Alcon growing similar crops may have attracted other bats resulting to low number of caught individuals