Overview

Distribution

Range Description

This species is known from Puerto Rico, Virgin Islands and throughout Lesser Antilles south to St. Vincent and Barbados (Simmons, 2005).
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Geographic Range

Brachyphylla cavernarum is found on Puerto Rico and throughout the Lesser Antilles south to St. Vincent and Barbados (Nowak, 1994).

Biogeographic Regions: neotropical (Native )

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Physical Description

Morphology

Physical Description

On average, B. cavernarum ranges from 65-118 mm in length, with a forearm length of 51-69 mm. The upper parts are ivory yellow in color with hairs that are tipped with sepia. Patches on the shoulders, neck and sides are paler and the underside is brown.

The muzzle is conical shaped and the lower lip has a V-shaped groove that is edged by tubercles. The nose leaf is vestigial, and the ears are small and separate. The tail is vestigial and concealed in the base of the interfemoral membrane, which is well developed. The molar teeth are broad and well ridged (Nowak, 1994).

Average mass: 45 g.

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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
The biology of this bat is poorly known. Individuals have been observed in a variety of habitats ranging from the xeric Guanica State Forest to the mesic Luquillo Experimental Forest, in Puerto Rico. It roost in caves; however, it is present in some habitats where cave are absent, indicates that it can uses other roosts. Its diet consists of insects, pollen, and especially fruit (like mango, papaya, and sapodilla). It forages in the canopy or take fruit that has to fallen to the ground. Information about it reproductive patters are fragmentary (Gannon et al., 2005). Twelve females from the Island of Caicos carried similar-sized fetuses in March (Buden, 1977), and on St. Croix from one colony gave birth during a three-week period in late May and early June (Bond and Seaman, 1958; Nellis and Ehle, 1977 in Gannon et al. 2005). They have also been found roosting in buildings and other man-made structures (Allen, 1939).

Systems
  • Terrestrial
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Habitat

B. cavernarum roost in caves in Puerto Rico and other Caribbean Islands. The name contains the word "caverna", referring to the caves in which they live. They have also been found roosting in buildings and other man-made structures (Allen, 1939). B. cavernarum emerge in the evening to forage in forested tropical habitats.

Terrestrial Biomes: forest ; rainforest ; scrub forest

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Trophic Strategy

Food Habits

Brachyphylla cavernarum is opportunistic in feeding habits, consuming fruit, pollen, flowers, nectar and insects. They are considered primarily nectarivores (Nowak, 1994).

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Associations

Known predators

Brachyphylla cavernarum is prey of:
Epicrates inornatus
Diptera
Secernentia nematodes
Streblidae
Labidocarpidae
Macronyssidae

Based on studies in:
Puerto Rico, El Verde (Rainforest)

This list may not be complete but is based on published studies.
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Known prey organisms

Brachyphylla cavernarum preys on:
pollen
fruit

Based on studies in:
Puerto Rico, El Verde (Rainforest)

This list may not be complete but is based on published studies.
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Life History and Behavior

Reproduction

Reproduction

Brachyphylla cavernarum reproduces sexually. Births occur most often during a three week period in late May and early June. The colonies during this time consist mostly of females with one offspring. There are very few males or non-reproductively active females found in maternity colonies (Allen, 1939).

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Brachyphylla cavernarum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Species: 2
Species With Barcodes: 1

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2008

Assessor/s
Rodriguez, A. & Dávalos, L.

Reviewer/s
Medellín, R. (Chiroptera Red List Authority) & Schipper, J. (Global Mammal Assessment Team)

Justification
Listed as Least Concern in view of its abundance within its restricted distribution, its presumed large population, occurrence in a number of protected areas, tolerance to some degree of habitat modification, and because its habitat is unlikely to be declining fast enough to qualify for listing in a more threatened category.

History
  • 1996
    Lower Risk/least concern
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Conservation Status

Brachyphylla cavernarum is not currently considered at risk of becoming endangered although habitat modification, cave disturbance, and extermination by humans may pose significant threats to population status.

US Federal List: no special status

CITES: no special status

IUCN Red List of Threatened Species: least concern

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Population

Population
It is one of the most commons fruit-eating bats in some Caribbean Islands (Gannon et al., 2005).

Population Trend
Unknown
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Threats

Threats

Major Threats
There are no major threats at present.
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Management

Conservation Actions

Conservation Actions
Found in protected areas.
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Relevance to Humans and Ecosystems

Benefits

Economic Importance for Humans: Negative

It is not likely that these bats significantly impact humans negatively, though they may be accused of damaging fruit crops (Nowak, 1994).

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Economic Importance for Humans: Positive

No specific benefits of B. cavernarum have been identified, although it is quite likely that they are responsible for the pollination of tropical plants, especially fruiting trees (Nowak, 1994). Their guano can also be harvested to be used as fertilizer.

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Wikipedia

Antillean Fruit-eating Bat

The Antillean Fruit-eating Bat (Brachyphylla cavernarum) is one of two leaf-nosed bat species belonging to the Brachyphylla genus. The species occurs in the Caribbean from Puerto Rico to St. Vincent and Barbados. Fossil specimens have also been recorded from New Providence, Bahamas.

Contents

Taxonomy

Three subspecies of Brachyphylla cavernarum are recognized. Brachyphylla cavernarum cavernarum is the largest of the subspecies and occurs from St. Croix to St. Vincent. Brachyphylla cavernarum intermedia is of intermediate size and occurs in Puerto Rico and the Virgin Islands with the exception of St. Croix. Brachyphylla cavernarum minor occurs in Barbados and is characterized by its small size.[2]

Physical description

The Antillean Fruit-eating Bat has white to yellow-white hair at the base with darker coloration in the dorsum. Mature individuals measure from 65 to 118  millimeters (2½ to 4⅝ inches) with a forearm length ranges of 51 to 69 millimeters (2 to 2¾ inches) in length. The average weight is 45 grams (1⅝ ounces).[3]

Ecology

The Antillean Fruit-eating Bat occurs in Puerto Rico, the Virgin Islands and the Lesser Antilles up to St. Vincent and Barbados. Individuals roost in a variety of settings which include unused buildings, caves, dense tree tops, crevices, large wells, and cliffs. Sites without direct sunlight are preferred by the species although large colonies have been found in sunlit areas. The species occurs in dry arborescent vegetation on St. John.[2]

The Antillean Fruit-eating Bat has a varied diet which includes fruits, pollen, nectar, and insects. Fruits consumed in the wild include papaya, mango, Indian almond, manjack (Cordia spp.), royal palm, and sapodilla. In captivity the species has been observed consuming bananas, apples, pears, melons, peaches, and the flowers of the Kapok, sausage tree, royal palm, portia tree, and Jatobá. Confirmed insects consumed include one mite species (Macronyssidae), two batfly species (Streblidae), one tick species (Argasidae), and two bat-mite species (Labidocarpidae). These bats feed in the canopy of the forest and in the ground.[2]

Behavior

The Antillean Fruit-eating Bat move out from the roost synchronically one hour after sunset and 20 minutes after the Jamaican fruit bat (Artibeus jamaicensis). This synchronization is also evident when returning to the roosts which happens just before the break of dawn.[2]

See also

References

  1. ^ Chiroptera Specialist Group (1996). Brachyphylla cavernarum. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 28 November 2006. Database entry includes justification for why this species is of least concern
  2. ^ a b c d Pierre Swanepoel and Hugh. H Genoways (15 December 1983). "Brachyphylla cavernarum" (PDF). Mammalian Species (American Society of Mammalogists) 205: 6. http://biomicro.sdstate.edu/pederses/batpdf/Brachyphylla.pdf. Retrieved 2006-11-27. 
  3. ^ Mietzel, M. (2002). "Brachyphylla cavernarum". Animal Diversity Web. University of Michigan Museum of Zoology. http://animaldiversity.ummz.umich.edu/site/accounts/information/Brachyphylla_cavernarum.html. Retrieved November 28, 2006. 
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