BULLETIN FLORIDA STATE MUSEUM


TABLE 3.-BIMONTHLY SAMPLES OF IMPORTANT FOOD GENERA IN DIETS OFArtibeus AND
 Vampyrodes. NUMBERS INDICATE FECAL SAMPLES WITH A GIVEN FOOD
 PRESENT. SAMPLING PERIODS BEGIN AT MID-MONTH.

 Food species Jan-Mar Mar-May May-Jul Jul-Sep Sep-Nov Nov-Jan
 Artibeus jamaicensis
 Ficus spp. 18 25 25 35 21 17
 Cecropia spp. 3 3
 Spondias spp. 1 8 6
 Quararibea 9
 Pollen 1
 Total fecal samples* 20 30 32 39 35 37
 Artibeus lituratus
 Ficus spp. 2 4 2 1 4
 Spondias spp. 1 1 1
 Pollen 1
 Total fecal samples* 3 4 5 2 7
 Artibeus phaeotis
 Ficus spp. 2 1 2 1 3
 Cecropia spp. 1 5
 Spondias spp. 8
 Total fecal samples* 5 6 9 1 11
 Vampyrodes caraccioloi
 Ficus spp. 1 2 4 3 1
 Pollen 2
 Total fecal samples* 3 3 4 3 2
 *Includes genera of lesser importance not shown here.


 Feeding niche breadths based on frequency of occurrence of food
species in the diet are presented in Table 4. Large niche breadth values
represent food generalists and small values food specialists. A.
phaeotis stands alone at the generalist extreme of this index. Among
the other species, A. jamaicensis has an intermediate position;


TABLE 4.-FEEDING NICHE BREADTHS OF CANOPY FRUGIVORES. SAMPLE SIZES FOR
 CALCULATING NICHE BREADTHS ARE FROM TABLE 2.

 Genera of known Species of known Niche breadth
Bat species food plants food plants (log. B)
V. pusilla 2 4 0.94
C. trinitatum 3 4 1.33
A. phaeotis 10 12 2.10
V. helleri 2 3 1.01
C. villosum 1 3 1.01
V. caraccioloi 4 5 1.04
A. jamaicensis 9 16 1.61
A. lituratus 5 7 1.33


Vol. 24, No. 4