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Mediterranean house gecko

life science Maturity 5-7 Next article →

The Mediterranean house gecko, known scientifically as Hemidactylus turcicus, is a highly successful lizard species.

Hemidactylus turcicus, Chambers Co., TX; 15 Sept 2018
Hemidactylus turcicus, Chambers Co., TX; 15 Sept 2018

It is native to the Mediterranean region, but it has spread globally. You can find it in East Africa, South America, and the Caribbean. It is also common in the Southern and Southeastern United States. Many people call it the "moon lizard" because it emerges at night. A study in Portugal showed that it is totally nocturnal. This means it is most active around 02:00.

Mediterranean house gecko ambush
Mediterranean house gecko ambush

This gecko has many unique physical features that help it survive. It is a very small lizard with large, lidless eyes. These eyes feature elliptical or vertical pupils that can change size. The skin is often purple or tan with black spots. Many geckos have stripes on their tails. Their bellies are somewhat translucent, meaning they are partially see-through. The tail is cylindrical and tapers toward the end. It is covered with large, keeled tubercles, which are bumpy scales.

The gecko uses special anatomy to move and hunt effectively. It possesses sticky toe pads that allow it to climb. These pads have structures called lamellae underneath the digits. There are 6 to 8 lamellae under the inner digits. There are 8 to 10 under the fourth finger. There are 9 to 11 under the fourth toe. These structures help the gecko grip surfaces. This allows it to navigate the cracks in old brick buildings. It can also live in mountain cliffs or caves.

As a predator, the Mediterranean house gecko is quite voracious. It is a visual hunter that prefers living prey over dead prey. Its diet includes crickets, grasshoppers, cockroaches, spiders, and beetles. It also eats moths, butterflies, ants, isopods, and snails.

Mediterranean house gecko ambush
Mediterranean house gecko ambush

Geckos are often attracted to outdoor lights. Lights draw in insects, which provides a steady food source. This allows the gecko to hunt in open areas near the light. It can even intercept female crickets that are attracted to male cricket calls.

Reproduction in this species involves specific behaviors and biological processes. Geckos reach sexual maturity within four months to one year. Males produce clicking sounds to attract females. Females respond with their own squeaks. During mating, they may engage in copulatory biting. Stronger bites can lead to higher fertilization success. Fertilization is internal, meaning it happens inside the female. The breeding season usually runs from April to August.

Hemidactylus turcicus
Hemidactylus turcicus

Female geckos have a unique way of managing fertilization. They can store sperm in a funnel-shaped organ called the infundibulum. This organ allows them to store sperm for up to five months. Because of this, scientists do not know the exact gestation time. They estimate it is around 40 to 60 days. Most females lay an average clutch size of two eggs. Eggs are typically laid between mid-May and August. Interestingly, neither parents provide any care for the offspring. Males may even bite the juveniles.

The spread of this gecko is linked to human environments. It often lives in areas near people, such as university campuses or cemeteries. It finds shelter in human homes, like inside walls or under baseboards. It also uses trash piles and attics for nesting. This reliance on human habitation helps the species proliferate, much like rodents. Unlike many other reptiles, this gecko is highly resistant to pesticides. This makes it very difficult to control in urban areas.

History shows how much we have learned about this species. George Boulenger described many reptiles in his 1890 book, Fauna of British India. Researchers have tracked the gecko's movement for decades. In 1974, it was known in the Southwestern United States. It has since spread to states like Florida, Georgia, and Texas. More recently, it has been found in Pennsylvania and Tennessee. It has even been reported in Indiana. Its ability to adapt to different climates makes it one of the most successful geckos in the world.

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File:Hemidactylus turcicus, Chambers Co., TX; 15 Sept 2018.jpg
Hemidactylus turcicus, Chambers Co., TX;...
File:Hemidactylus turcicus.jpg
Hemidactylus turcicus.jpg
File:Mediterranean house gecko ambush.jpg
Mediterranean house gecko ambush.jpg
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