The Mourning Gecko (Lepidodactylus lugubris) is a fascinating species primarily known for its parthenogenetic reproduction, meaning females can produce offspring without the need for males. In fact, nearly all individuals of this species are female, and they reproduce through a process called parthenogenesis. This unique reproductive strategy allows populations to rapidly establish and expand in new environments, making them excellent colonizers. As a result, Mourning Geckos have successfully spread to a wide range of locations across the Indo-Pacific and beyond, including tropical islands, coastal regions, and even urban areas. Despite their small size, typically reaching just 3.5 to 4 inches in length, these geckos are remarkably resilient and adaptable.

Another interesting aspect of the Mourning Gecko is its social behavior. These geckos are known to form small colonies, often sharing communal spaces with multiple individuals. Within these colonies, they display a unique hierarchy, with dominant females exhibiting more aggressive behaviors to assert their status. Despite their parthenogenetic nature, Mourning Geckos still engage in pseudo-mating behaviors, which are thought to stimulate egg production. This social and reproductive adaptability, along with their ability to thrive in a wide variety of habitats, has contributed to their successful spread across numerous islands and regions. Additionally, they are nocturnal, feeding on a varied diet of insects, fruit, and nectar, which helps them thrive in both natural and urban settings.