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This article relies largely or entirely upon a single source. Please help improve this article by introducing appropriate citations to additional sources. (July 2010) This article needs additional citations for verification. Please help improve this article by adding reliable references. Unsourced material may be challenged and removed. (July 2010) This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. Please improve this article by introducing more precise citations where appropriate. (July 2010) Puerto Rican Boa Conservation status Least Concern (IUCN 3.1) Scientific classification Kingdom: Animalia Phylum: Chordata Class: Reptilia Order: Squamata Family: Boidae Subfamily: Boinae Genus: Epicrates Species: E. inornatus Binomial name Epicrates inornatus (Reinhardt, 1843) The Puerto Rican Boa is a slender, terrestrial, viviparous boa with a dark brown coloration. It grows up to be about six to nine feet long. It feeds on small mammals, birds and lizards. As a member of the rainbow boas (genus Epicrates), it belongs to the family of the true boas (Boidae). It is currently on the endangered species list. Contents 1 Distribution 2 Current status 3 See also 4 References Distribution The Puerto Rican Boa is endemic to the island of Puerto Rico. It is more common on the karst region in the north-western tip of the island. The boa feeds by seizing the prey in its jaws, wrapping several coils around the victim, and then constricting until the prey has suffocated. The prey is then swallowed head first. The feeding habits of the very young are unknown. Pregnant females give birth to about twenty-three to twenty-six live young boas. Young boas have never been kept in captivity because their feeding patterns have never been studied. Since the karst region in which the Puerto Rican Boa lives usually has many caves, the Boa has the opportunity to feed on bats. It was previously unknown how the boa managed to capture the bats on flight. Observations revealed that boas hang at the opening of the cave, waiting until bats fly out of it. Then they grab a bat with their jaws before killing it via constriction. Current status Historic records, some dating back to the 18th century, indicate that during the first few centuries of Spanish colonization in Puerto Rico the boa was relatively abundant, and oil produced from the snake's fat was utilized extensively as an export. Impacts to the boa resulting from the oil trade were undoubtedly heightened by a concurrent reduction of habitat. Deforestation of the island began during this period and continued until, by the early 20th century, very little natural forest remained. When an expedition from the U.S. Natural Museum visited Puerto Rico in 1900, the boa had become so rare that no specimens could be collected. Predation by the mongoose, introduced into Puerto Rico in the 20th century, has been postulated as a further cause for the boa's present status, but there is no direct evidence to support this idea. There is an indication that the boa has recovered somewhat in recent years, although not to the degree that protective measures can be dropped. See also Puerto Rico portal Biology portal Amphibians and Reptiles portal List of amphibians and reptiles of Puerto Rico Fauna of Puerto Rico List of endemic fauna of Puerto Rico References Mayer, G.C. & Tolson P.J. (2009). "Epicrates inornatus". IUCN Red List of Threatened Species. Version 2011.1. International Union for Conservation of Nature. http://www.iucnredlist.org/apps/redlist/details/7821. Retrieved 24 June 2011.