Belize Biodiversity Information System

Taxonomy

Species ID	050840
Name	Van Gelder's bat
Other Common Names
Category	05 Mammals
Phylum
Subphylum
Class	Mammalia
Subclass	Theria
Suborder	Microchiroptera
Family	Vespertilionidae
Genus	Bauerus
Species	dubiaquercus
Subspecies
References	1, 2, 3, 7, 9
Scientific Synonyms	Antrozous (Bauerus) dubiaquercus Van Gelder, Baeodon meyeri Pine 1966

Comments

9* No subspecies.

Baudub-Img.JPG

Distribution

DISTRICT	References
Orange Walk	10
Cayo	5
Stann Creek	10
Toledo	11

Administrative Unit	Occurrence	Abundance	Temporal	References
Cockscomb Basin Wildlife Sanctuary	Collected as voucher.	Unknown, insuffient data	Dry season (Jan-May)	10
Gallon Jug	Captured or Mist netted and released	Common	May	10
Gallon Jug	Captured or Mist netted and released	Common	January	10
Gallon Jug	Captured or Mist netted and released	Common	December	10
Gallon Jug	Captured or Mist netted and released	Common	August	10
Gallon Jug	Captured or Mist netted and released	Common	July	10
Gallon Jug	Captured or Mist netted and released	Common	March	10
Gallon Jug	Captured or Mist netted and released	Common	April	10
Gallon Jug	Captured or Mist netted and released	Common	October	10
Gallon Jug	Captured or Mist netted and released	Common	February	10
Gallon Jug	Captured or Mist netted and released	Common	November	10
Caracol Archaeological Reserve	Captured or Mist netted and released	Unknown, insuffient data	May	5
Bladen Nature Reserve		Unknown, insuffient data	May	11
Columbia River Forest Reserve	Collected as voucher.	Unknown, insuffient data	March	11
Mountain Pine Ridge Forest Reserve	Collected as voucher.	Unknown, insuffient data	July	14
Cockscomb Basin Wildlife Sanctuary	Collected as voucher.	Unknown, insuffient data	May	12
Columbia River Forest Reserve	Collected as voucher.	Unknown, insuffient data	July	13
Mountain Pine Ridge Forest Reserve	Collected as voucher.	Unknown, insuffient data	Permanent Resident (Year-round)	4
Columbia River Forest Reserve	Unknown	Unknown, insuffient data	Permanent Resident (Year-round)	4
Bladen Nature Reserve	Collected as voucher.	Unknown, insuffient data	May	13, 4
Gallon Jug	Captured or Mist netted and released	Fairly common	Permanent Resident (Year-round)	10

ELEVATION Association	References
1-200 m	10
401-600 m	5
1-200 m	12
201-400 m	11
101-200 m	10 ,4

QUAD Distribution	References
16 45' to 17 00'; 88 15' to 88 30'	10
17 30' to 17 45'; 89 00' to 89 15'	10
16 45' to 17 00'; 88 30' to 88 45'	12
16 30' to 16 45'; 88 45' to 89 00'	13, 4
16 45' to 17 00'; 89 00' to 89 15'	5
16 45' to 17 00'; 88 45' to 89 00'	14, 6
16 30' to 16 45'; 88 30' to 88 45'	6
16 15' to 16 30'; 89 00' to 89 15'	11, 4

Holdridge Life Zone Distribution	References
Tropical moist-transition to Subtropical	10
Subtropical moist	10,5
Subtropical Lower Montane moist	14
Subtropical wet	11,4

Comments on Distribution

4* Quebrado de Oro; 1 adult male.

Graphics

Distribution map
Vocal signature with call parameters

Habitat Associations

Forest Type Associations	Seral Stage	Canopy Closure	References
Lowland broadleaf moist evergreen seasonal forests over poor soils.	all stages	71-100%	10
Transitional Broadleaf Forest Poor in Lime-loving Species	all stages	71-100%	10
Marsh and Swamp Communities	all stages	71-100%	10
Broadleaf Forest Rich in Lime-loving Species: Sapote-ramon-spice forest.	all stages	71-100%	10
Lowland broadleaf moist evergreen seasonal forest over limestone, northwestern variant.	all stages	71-100%	10
Broadleaf Forest Rich in Lime-loving Species: Sapote-Silion forest.	all stages	71-100%	10
Broadleaf Forest Rich in Lime-loving Species	Canopy unknown	Canopy unknown	5
Broadleaf hill forests over limestone in steep terrain.	Canopy unknown	Canopy unknown	14
Pine Forest and Orchard Savanna	Canopy unknown	Canopy unknown	14
Disturbed scrub	Canopy unknown	Canopy unknown	12
Broadleaf Forest with Few Lime-loving Species	Canopy unknown	Canopy unknown	12
Broadleaf hill forests over non-calcareous rocks, Santa Maria variant.	Canopy unknown	Canopy unknown	11
Broadleaf Forest with few Lime-loving Species	Canopy unknown	Canopy unknown	11
Transitional Broadleaf Forest Poor in Lime-loving Species	Canopy unknown	Canopy unknown	12
Lowland broadleaf rain forests over moderately lime-rich alluvium.	Canopy unknown	Canopy unknown	12
Lowland broadleaf rain forests over moderately lime-rich alluvium.	Canopy unknown	Canopy unknown	4
Transitional Broadleaf Forest Poor in Lime-loving Species	Canopy unknown	Canopy unknown	4

Food Habits

Trophic

INSECTIVORE

References on Trophic Level

8

Lifestage	Food Item Consumed	Part of Food Item
Adult	Insects	Adult stage

Comments on General Food Habits

8* White (1969) related the "bulldog-like" anterio-dorsal upturning of the cheek teeth in B. dubiaquercus to feeding strategy and speculated that this species might take food exclusievly in flight, using the upturned cheek teeth to obtain a secure hold on large insects. Martin and Schmidly (1982) noted that the pelvic girdle of B. dubiaquercus was less robust than that of its nearset realtive, Antrozous pallidus, and suggested that, unlike the pallid bat, B. dubiaquercus probably does not alight on the ground to capture prey.

Life History

Life History Narrative

*8 Few reproductive data are available for B. dubiaquercus. In April, a pregnant female with one fetus (22 mm in crown-rump length) and a male with testes 4 mm in length were collected in Honduras (Pine et al. 1971), and a lactating female was taken in Chiapas (Medellin L. et al., in press). In Costa Rica, two "post-lactating" females were collected in July and a male with testes 4 mm in length was collected in June (Dinerstein, 1985). Specimens have been collected in a variety of tropical forest habitats, including lowland, premontane, and montane evergreen rainforest; moist, montatne pine-oak forest; and lowland tropical deciduous forest (Dinerstein, 1985; Engstrom and Wilson, 1981; McCarthy, in press; Medellin L. et al., in press; Pine, 1966; Pine et al. 1971, Van Gelder, 1959). All sepcimens have been taken during flight; roosting sites are unknown. White (1969) related the "bulldog-like" anterio-dorsal upturning of the cheek teeth in B. dubiaquercus to feeding strategy and speculated that this species might take food exclusievly in flight, using the upturned cheek teeth to obtain a secure hold on large insects. Martin and Schmidly (1982) noted that the pelvic girdle of B. dubiaquercus was less robust than that of its nearset realtive, Antrozous pallidus, and suggested that, unlike the pallid bat, B. dubiaquercus probably does not alight on the ground to capture prey.

Life History References

8

References

1  McCarthy, T. J. 1993. Checklist: Mammals of Belize. BAS Newsletter
   25 (2-3).

2  Hall, E. R. 1981. Mammals of North America. Second ed. John Wiley &
   Sons. New York. 1:238

3  Koopman, Karl F. 1993. Chiroptera. in  Wilson, D. E., and D. M. Reeder,
   eds, Mammalian species of the world, 2nd ed, Smithsonian Institution
   Press, Washington, D.C., pp. 137-241.

4  McCarthy, T. J., M. Blake. 1987.  Noteworthy bat records from the Maya
   Mountains Forest Reserve, Belize.  Mammalia v. 51, No. 1, pp.161-164

5  Howell, D. 1990. The Bats of Caracol. Parts I and II. 22 pp. Unpub.
   report for Wildlife Conservation Society.

6  McCarthy, T. J. 1987. Distributional records of bats from the Caribbean
   lowlands of Belize and adjacent Guatemala and Mexico. In: Studies in
   Neotropical Mammalogy: Essays in Honor of Philip Hershkovitz (B.D.
   Patterson and R.M. Timm, eds.). Fieldiana:n.s. No. 39:137-162.

7  Engstrom, M. D., D. E. Wilson. 1981.  Systematics of Antrozous
   dubiaquercus (Chiroptera: Vespertilionide), with comments on the status
   of Bauerus van Gelder.  Annals of Carnegie Museum. 50(15):371-383.

8  Engstrom, M. D., T. E. Lee, and D. E. Wilson. 1987. Bauerus
   dubiaquercus.  The American Society of Mammalogists.  Mammalian Species.
   No. 282:1-3.

9  Koopman, Karl F. 1994. Chiroptera: Systematics (in) Handbook of Zoology.
   W. de Gruyter. Berlin-NY. p.46.

10 Miller, B. W. 2000. Community ecology of the non-phyllostomid bats of
   NW Belize, with notes on country wide distributions and ecology. PhD.
   dissertaion.  Durrell Institute of Conservation and Ecology, University
   of Kent, Cantebury, U.K.

11 CM. 1997. Carnegie Musuem, Division of mammals. Data imported on
   date: 06/13/00.

12 USNM. 1995. Collections data from mammal department, United States
   National Museum. Imported on date: 06/13/00.

13 AMNH. 1996. Bat holdings provided by Nancy Simmons, unpublished listing
   of catalog.

14 ROM. 1995. Collections data from mammal department, Royal Ontario
   Museum.