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Tropical House Gecko
gekko
Tropical House Gecko, photographed in western Delray Beach, Palm Beach County, in April 2015.
tropical house gekko
 

Usually the problem with invasives is that they displace native species. The story of this guy, the tropical house gecko, Hemidactylus mabouia, is different in that it has displaced another invasive, the Mediterranean house gecko. Which, if you think about it, is pretty much of a wash.

Two things identify the tropical house gecko: the first is when and where you're mostly likely to see it. On a house wall at night close to a light. The send is those marks on the back, which vaguely look like chevrons. However, depending on the lighting conditions, the marks might not be all that apparent.

It's a small critter, going about five inches from snout to tail. It is extremely wary and is quick to scoot (as we know all too well from numerous failed attempts to photograph it). There is no danger that It will attempt to sell you insurance.

Tropical house geckos are natives of sub-Saharan tropical Africa, Madagascar and the Mozambique Channel Islands. They've become naturalized residents of the Caribbean and tropical South America.

Sometime in the late 20th century, they made the move to Florida, most likely with the help of agricultural and foliage trade with Puerto Rico and Brazil, according to the folks at the Florida Fish and Wildlife Conservation Commission. The FWC says the presence of the tropical house gecko was first documented in Florida in 1990 but was likely here before that.

They're now found in at least 15 counties concentrated in South and Central Florida, according to the FWC. Other sources have it in 21 counties.

 
 
tropical house gekko
 

In 2012, a tropical house gecko was found in Fredrick, MD, mostly likely having hitched a ride on a furniture truck.

In 2013, several tropical house geckos were spotted near a Walmart in Brownsville, Texas, a more likely point on the map for the lizard to gain a foothold.

The FWC said it might be the most predacious of the geckos, hunting anole hatchlings and other geckos as well as insects and other invertebrates. The fact that it hunts at night when most other Florida lizards, native and exotic, are active only during the day might be one major reason for the tropical house gecko's rapid population growth. In turn, its enemies include the Cuban treefrog (another invasive) and the tokoy gecko.

Other names for the tropical house gecko include wood slave, cosmopolitan house gecko and amerafrican house gecko.

 
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Photographs by David Sedore
     
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