BONACCORSO: A PANAMANIAN BAT COMMUNITY


pulp and the other carried a fresh Spondias radlkoferi fruit in its
mouth. From several morphological features, particularly the small
teeth and narrow esophagus, Paradiso (1967) concluded that C. senex
probably feeds on a "soft fruit or fluid" diet. Its small teeth and lack of
facial hair suggest that it possibly feeds on very juicy, over-ripe fruit
or decaying fruit. The amount of rotting fruit on the forest floor was in-
credibly large on BCI and potentially could have provided an abun-
dant food resource for such a bat. I have tentatively designated it a
"scavenging frugivore".
 An alternative suggestion is that Centurio may feed on very juicy
fruits still clinging to trees. S. R. Humphrey (pers. comm.) believes
from analysis of jaw structure that Centurio is best adapted for
feeding on large, ripe, soft fruits that have very thick pericarps, such
as papayas and mangos.

NECTAR-POLLEN-FRUIT-INSECT OMNIVORE GUILD
 BODY SIzE.-The nectar-pollen-fruit-insect omnivore guild
(hereafter called the omnivore guild) contains three species, all of the


 25-



 \ Carollia castanea N=37
 20
 S\--- C. perspicillata N=112

 UlS
 U I I

 15- I


 S10-\
 O I \
 I I /
 u
 C 5- \


 0 2 4 6 8 10 12
 HOURS AFTER SUNSET

FIGURE 8.-Frequency of capture through the night as a measure of flight activity for
two groundstory frugivorous species.