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Home -> Kingdom Animalia -> Phylum Chordata -> Subphylum Vertebrata -> Class Reptilia -> Order Squamata -> Suborder Scleroglossa -> Family Gekkonidae -> Species Palmatogecko rangei

Palmatogecko rangei
Namib web-footed gecko



2010/02/07 04:13:58.003 US/Eastern

By Melanie Cutler

Kingdom: Animalia
Phylum: Chordata
Subphylum: Vertebrata
Class: Reptilia
Order: Squamata
Suborder: Scleroglossa
Family: Gekkonidae
Genus: Palmatogecko
Species: Palmatogecko rangei

Geographic Range

Palmatogecko rangei is found in Africa south of the Sahara Desert, mainly in Namibia.

Biogeographic Regions:
ethiopian (native ).

Habitat

As they are nocturnal, these geckos live mostly nestled in deep burrows in the desert sand where there is a moderate amount of moisture during the day. They venture out to the surface only when the desert's temperature has dropped at night.

Terrestrial Biomes:
desert or dune .

Physical Description

Namibian geckos have translucent skin, mostly a somber brown or gray color which helps them blend in with their desert environment. They have thin, spindly legs and large webbed feet, which help them dig burrows in the coastal Namib Desert. Their webbed feet also allow them to run across the fine sand in their native habitat. These webs are fleshy, but they contain tiny cartilages that support a delicate system of muscles that coordinate the fine sand-scooping motions of the feet. Additionally, the adhesive pads on their toes have rows of plates called lamellae, which are covered with thousands of microscopic hook like projections called villosities. These villosities catch any minor surface irregularity in order to aid the gecko in climbing.

Palmatogecko rangei possess large, bulb-like eyes with vertical pupils. Their eyes are are dark brown and red, and they stand out against the pinkish-brown color of the head and back of the species. Like most geckos, they lack eyelids. Instead, the eyes are covered with a transparent scale, called a spectacle, which is cleaned by periodic licking.

This species does not show marked sexual dimorphism. Although males are generally smaller, the differences between males and females are so small that they can only be determined by examining a large number of specimens. These lizards usually range in size from 10-15 cm long, and individuals have a lifespan of 1-5 years.

Some key physical features:
ectothermic ; bilateral symmetry .

Reproduction

The breeding season for the Namib web-footed gecko begins in the spring (April/May). The male geckos bites the female's neck and subsequently holds her tightly while maneuvering his tail under hers to complete copulation. Females lay eggs in pairs, although young females who have never laid eggs before may lay only one egg. The eggs are buried in a moist substrate around 30 degrees Celsius. Eggs are calcareous, around 8-11 by 7-9 mm in size, and may be either stuck together or separate. The young are hatched in about eight weeks. Depending on when the female lays the eggs (usually between May and August), the young emerge between July and October.

Key reproductive features:
gonochoric/gonochoristic/dioecious (sexes separate).

Behavior

Males often fight with one another, especially if left alone together in captivity. This a mostly solitary species.

Key behaviors:
motile .

Food Habits

Palmatogecko is a nocturnal, insectivorous animal. They are known as inefficient hunters because their prey (such as grasshoppers, small spiders, and any arthropod small enough for them to digest) can easily avoid them. However, by hunting at night, they are able to take advantage of the lack of competition from other lizards during the hours when insects and spiders are off their guard. Their large eyes and vertical pupils help the lizards see well at night.

Economic Importance for Humans: Positive

Important in the pet trade.

Conservation Status

Human activities threaten the geckos' survival. People hunt them for food, and in many areas, their habitats have been destroyed. Some laws have been passed that help to protect the lizards.

Other Comments

Palmatogecko rangei has complex vocalizations, ranging from squeaks and clicks to croaks and barks. These forms of communication are utilized when the lizard is disturbed or if it is trying to attract a mate.

Contributors

Melanie Cutler (author), University of Michigan.

References

Cogger, Harold G. 1992. Reptiles and Amphibians. Smithmark Publishers, New York. pp. 131, 146-9.

Mattison, Chris. 1991. Keeping and Breeding Lizards. Blandford, London. pp. 88-94.

Seufer, Hermann. 1985. Keeping and Breeding Geckos. TFH Publications, Germany. pp. 91-3.

World Book Encyclopedia. 1986. World Book Incorporated, Inc., Chicago. Vol. G: pp. 357-9.

2010/02/07 04:13:58.918 US/Eastern

To cite this page: Cutler, M. 1999. "Palmatogecko rangei" (On-line), Animal Diversity Web. Accessed February 09, 2010 at http://animaldiversity.ummz.umich.edu/site/accounts/information/Palmatogecko_rangei.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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