BULLETIN FLORIDA STATE MUSEUM


family Phyllostomatidae: Glossophaga soricina (Glossophaginae),
Phyllostomus discolor (Phyllostominae), and Phylloderma stenops
(Phyllostominae). Mean body weights for these species are given in
Table 11. The dimorphism in body weights between male and female P.
discolor is significant (P < .05, Student's t-test).
 FOOD SELECTION.-Nectar and pollen are consumed by guild
 members almost exclusively in the dry season, as large flowers
 suitable for bats are in bloom only then (see Phenology). The few data
 available suggest that during the wet season fruit and insects become
 dietary staples (Table 12). Insects were not present in the food samples
 of G. soricina on BCI, probably because of poor sample size and the
 fact that this species moved out of the study area during the wet

 TABLE 11.-WEIGIITS OF OMNIVOROUS BATS ON BCI. COLUMN HEADINGS AaE DEFINED
 IN TABLE 1.

 Bat species X S.D. N Wgt/wgt,,
 G. soricina 9.8 1.0 9 -
 P. discolor 42.2 3.9 27 4.36
 males 44.6 3.6 17 -
 females 39.7 2.1 10
P. stenops 61.8 1 1.42

TABLE 12.-SEASONAL USE OF POLLEN AND FRUIT BY TIHE OMNIVORE GUILD. NUMBERS
 INDICATE POLLEN SWABS AND FECAL SAMPLES COMBINED.

 Dry season Wet season
Food species samples samples
 P. discolor (N = 23)
Pollen:
 Ochroma lagopus 6
 Pseudobombax septenatum 6
 Unknown 202 1
Fruit:
 Cecropia exima 2
 Unknown 124 3
Insects: 3
 G. soricina (N = 6)
Pollen:
 Ochroma lagopus 3
 Unknown 201 1
Fruit:
 Cecropia exima 1
 Piper 109 1
 P. stenops (N = 2)
Fruit:
 Unknown 110 1
 Unknown 151 1


Vol. 24, No. 4