Epicrates maurus
| Epicrates maurus | |
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| Colombian Rainbow Boa | |
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| Species: | E. maurus
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| Binomial name | |
| Epicrates maurus (Linnaeus, 1758)
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Epicrates maurus is a species of non-venomous constrictor , in the family of Boinae, found in Amazon region of South America. Common name is Colombian rainbow boa.[2] While a terrestrial species, with its moderate size and weight it has a semi-arboreal life. Rainbow boa's are known for their attractive iridescent sheen on their scales in the sunlight.
Physical description
Size and weight- The Colombian rainbow boa is moderate in size, 3 to 5 feet average.[3] There is clear size differences between males and females, with females generally being significantly larger, in both length and girth, than males.
Coloring- Generally uniform brown in color with large dark edged vertebral rings, with light centers forming saddles, this may also appear as a slightly off-center 'S' pattern.[4] Through a process of metachrosis, they have a day to night color change. Primarily noticed in that their pattern will become a lighter almost silver and have a molted silver sides and bottom.[5] Although individuals of abnormal colors and patterns exist, for example those that exhibit pigmentation disorders such as albinism,[6] they are very rare in the wild, but are often found in captivity where these mutations are often prized.
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Colombian Rainbow Boa Daytime -
Colombian Rainbow Boa Nighttime
These pictures provide a good example of the Day to night color change, both pictures are of the same snake. Pictures were taken 3.2 hours apart.
Habitat
Colombian rainbow boas, the northernmost rainbow species, is found in the Amazon rainforest as well as the somewhat drier coastal clearings of lower Central America, Trinidad & Tobago and northern South America. As semi-arboreal snakes, young rainbow boas may climb into trees and shrubs to forage, however, they become mostly terrestrial with age.[7]
Behavior
Rainbow boas, like all boas in the Boidae family, are non-venomous snakes that subdue their prey with constriction. Like most Boids, they have special heat-sensing pits on their faces that allow them to detect the body heat of their warm-blooded prey.[8] While nocturnal, they may bask during the day when night-time temperatures are low. They are active at dawn and dusk and feed on small mammals, birds and lizards using their heat-sensing abilities to hunt in the low light. Most rainbow boas will never need a prey item larger than a large rat, as with most snakes, rainbow boas can expand their jaw to allow the consuming of items larger than the jaw would normally open (see snake skull). Wild Rainbow boas may bite when they feel threatened, as a defense. This bite can be painful, but is not dangerous. Care must still be taken against infection. Like all snakes, when in a shed cycle they will be more unpredictable and irritable due to the added stress of shedding and clouded sight.
Reproduction
Rainbow boas are solitary, associating only to mate. Boas are polygynous and ovoviviparous, thus males may mate with multiple females and give birth to live young. Females invest considerable maternal energy in their offspring since their young develop within the mother's body. The young are able to develop in a thermo-regulated, protected environment and they are provided with nutrients. Young are born fully developed and independent within minutes of birth.[4]
Captivity
This species does very well in captivity and is considered by many to be the easiest of all the Epicrates cenchria to maintain, requiring slightly less humidity than the Brazilian variant. They primarily feed on mice and rats. Commonly categorized as an 'Intermediate' species to keep by reptile distributors and breeders in the pet trade, they become quite tame with regualar handling. The species "Epicrates cenchria" and primarily the sub-species E. c. cenchria (Brazilian Rainbow)[9] and E. c. maurus (Colombian Rainbow) are growing in popularity and are widely bred in captivity with very few being imported. Breeders are attempting to produce a variety of different color and pattern "Morphs" through selective breeding. This is done by encouraging the dominant and recessive genes that code for proteins involved in chromatophore development, maintenance, or function.
See also
References
- ^ Catalogue of the specimens of snakes in the collection of the British museum 1849; British Museum (Natural History). Dept. of Zoology; Gray, John Edward, 1800-1875
- ^ "Epicrates cenchria maurus". Integrated Taxonomic Information System. Retrieved 15 April 2010.
- ^ Mattison, C. 2007. "The New Encyclopedia of Snakes". Princeton University Press. ISBN 0-691-13295-X.
- ^ a b O'Shea, M. 2007. Boas and Pythons of the World. Princeton, New Jersey: Princeton University Press. ISBN 0-691-13100-7.
- ^ R.D. Bartlett, C.2004. "Rainbow Boas and Neotropical Tree Boas". Barron's Educational Series, Inc. ISBN 0-7641-2686-5.
- ^ Ilo Hiler, Albinos. Young Naturalist. The Louise Lindsey Merrick Texas Environment Series, No. 6, pp. 28–31. Texas A&M University Press, College Station (1983).
- ^ Mehrtens JM. 1987. Living Snakes of the World in Color. New York: Sterling Publishers. 480 pp. ISBN 0-8069-6460-X.
- ^ ANIMAL BYTES — Boa Constrictor". Seaworld.org. Retrieved 2010-04-15.
- ^ "Epicrates cenchria cenchria". Integrated Taxonomic Information System. Retrieved 15 April 2010.