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1.1 Tarentola gomerensis
The gomero wall gecko or La Gomera gecko (Tarentola gomerensis), also known as Perenquén in Canary Islands, is a species of lizards in the Gekkonidae family (Joger and Bischoff, 1991). It is endemic to Spain. Its natural habitats are temperate shrubland, Mediterranean-type shrubby vegetation, rocky areas, rocky shores, pastureland, plantations, rural gardens, and urban areas (Miras et al., 2005).
Geckos are lizards belonging to the infra order Gekkota found in warm climates throughout the world (Borsuk-Bianlynicka, 1990). They range in size from 1.6 cm to 60 cm in length. Unlike lizards, geckos are usually nocturnal and great climbers. They come in various patterns and colour (Piper et al., 2007). According to Rogner, 1992, a medium sized genus of about 20 species is found predominantly in Africa, the canary Island and the Middle East, but with a few species in Europe and Tropical America (Carranza et al., 2002).
Geckos are unique among lizards in vocalization, making chirping sounds in social interactions with other geckos. The house gecko (Hemidactylus frenatus) is a native of South eastern Asia and Northern parts of Africa (Cook et al., 1990). They have been introduced to many other countries including Nigeria.
Hemidactylus frenatus is a well-adapted escape artist, managing to get out of the smallest space and taking advantage of any loss of concentration. These geckos are very close to human habitation where they feed on insects, worms and spiders. They are mainly in the ceiling, nooks and at the back of calendars during the day time but are active at night (Telford, 1979). They move with remarkable agility usually in search or pursuit of insect preys.
Like all vertebrates, geckos are susceptible to parasitism in their niche (Domrow et al., 1980). Geckos are infested by ticks, mites and helminths. Direct and indirect contacts with geckos clearly represent a substantial risk to human health. Other species of geckos (as shown in fig.1, fig.2, fig.3 and fig.4) include; Gehyra mutilata (Four-clawed house gecko) ,Gekko monarchus (Warty house gecko), Gekko smithii (Smith’s giant gecko), and Hemidactylus frenatus (Asian house gecko) (Carranza, 2001).