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Gehyra vorax


By Elizabeth Holmes

Species: Gehyra vorax

Geographic Range

Gehyra membranacruralis can be found on certain islands of the south Pacific Ocean. These islands include but are not limited to, Fiji, New Guinea, Tonga, and Vanuatu (Beckon,1999).

Biogeographic Regions
oriental (Native ); australian (Native )

Habitat

Gehra vorax is found in tropical climates. It can sometimes be found in human habitations, especially buildings with suitable hiding places. These spaces are abundant in plaited bamboo, reed walls, or thatched roofs (Beckon,1999). Gehyra membranacruralis can be found on larger trees, basking in the sun on the trunk, during the day. It relies on its cryptic coloring for protecion from its predators. It can also be found on the "crowns of coconuts and sago palms" (McCoy, 1980). Gehyra membranacruralis have also been known to inhabit mangrove forests, woodland grasslands, and lowland forests (Alcala, 1986).

Terrestrial Biomes
savanna or grassland ; scrub forest

Physical Description

Characteristics of Gehyra membranacruralis include its broadened toe pads and coarse granular scales. The pattern of scales on its back resembles a six-pointed star. Each large scale is surrounded by six small scales. Because it is nocturnal, Gehyra membranacruralis has pupils which narrow to vertical slits in bright light, but expand in the dark.

The head is of moderate size and is slightly depressed. All digits are clawed, the fifth digit with a minute claw. Digits all "strongly dilated with an undivivded series of 11-18 lamellae under the median toes" (McCoy, 1980). The hindlimbs of Gehyra membranacruralis have a distinct fold along their posterior edges. Its color is light or dark brown with irregular lighter and darker flecking over the dorsum, limbs, and tail. The venter of Gehyra membranacruralis is cream to yellow, with bright yellow or orange on the underside of its tail (McCoy, 1980). If grasped, Gehyra membranacruralis will shed pieces of its skin.

Reproduction

Like some other members of the family Gekkonidae, Gehyra membranacruralis uses vocalizations when trying to find a mate or marking its territory. This species is oviparous, laying two eggs at a time. Gehyra membranacruralis lays its eggs under loose bark, in tree hollows, or in the ceilings of houses (McCoy, 1980).

Behavior

Gehyra membranacruralis is arboreal and secretive, but often lives near human habitations. This lizard was introduced to certain islands of the south Pacific Ocean by accident, due to human immigration and commerce. The species was apparently carried unknowingly aboard the sailing crafts of early Pacific settlers (Beckon 1999).

Food Habits

Gehyra membranacruralis is a carnivore that eats insects, spiders, and smaller geckos (McCoy 1980).

Economic Importance for Humans: Positive

At one time, Gehyra membranacruralis was considered a source of food for people living on the smaller islands of the south Pacific Ocean.

Conservation Status

IUCN Red List of Threatened Species [Link]
Not Evaluated.

US Federal List [Link]
No special status

CITES [Link]
No special status

Conservation of this gecko is dependent upon the survival of its natural habitat. In past years it was hunted for food on smaller islands, but on larger islands a more profitable species was found (Beckon 1992).

Other Comments

Gehyra membranacruralis was recently described, originally being referred to the species Gehyra oceania (Beckon, 1992).

For More Information

Find Gehyra vorax information at

Contributors

Elizabeth Holmes (author), Michigan State University, James Harding (editor), Michigan State University, , 205 Museum, Michigan State University, East Lansing, MI 48824.

References

Alcala, A. 1986. Amphibians and Reptiles. Guide to Philippine Flora and Fauna, 10: 58-59.

Beckon, W. 1992. The Giant Pacific Geckos of the Genus Gehyra: Morphological Variation, Distribution, and Biogeography. Copeia, 2: 443-460.

Beckon, W. "Reptiles of Fiji" (On-line). Accessed November 1, 1999 at http://ice.ucdavis.edu/~beckon/reptiles.htm.

McCoy, M. 1980. Reptiles of the Solomon Islands. WAU Ecology Institute.

To cite this page: Holmes, E. 2000. "Gehyra vorax" (On-line), Animal Diversity Web. Accessed June 01, 2012 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Gehyra_vorax.html

Disclaimer: The Animal Diversity Web is an educational resource written largely by and for college students. ADW doesn't cover all species in the world, nor does it include all the latest scientific information about organisms we describe. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control.

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