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Boa constrictor imperator

Boa constrictor imperator
Boa constrictor imperator.jpg
CITES Appendix II (CITES)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Boidae
Subfamily: Boinae
Genus: Boa
Species: B. constrictor
Subspecies: B. c. imperator
Trinomial name
Boa constrictor imperator
Daudin, 1803
Synonyms
  • Boa imperator Daudin, 1803
  • Boa eques Eydoux & Souleyet, 1842
  • Boa constrictor var. isthmica Garman, 1884
  • Boa constrictor imperator
    Ihering, 1910
  • Boa constrictor sigma
    M.A. Smith, 1943
  • Boa constrictor imperator
    Forcart, 1951

Boa constrictor imperator is a nonvenomous boa constrictor subspecies found in Central America, commonly called common northern boa and common boa.

B. c. imperator is wide-ranging, with animals living in both Central America and northern parts of South America. As a result, the appearance of this snake varies greatly depending on the specific locality.

One population is found on the Cayos Cochinos (Hog Islands) off the north shore of Honduras. These are naturally hypomelanistic, which means that they have reduced melanin, thus are more lightly colored, although they retain the distinctive darker tail that is characteristic of most members of this species. The color of the tail may vary from salmon pink to orange.

Another well known population of B. c. imperator is the population from Nicaragua. While not as small as the dwarf insular island populations, adults are still smaller than the larger B. c. constrictor. The size of a mature female Nicaraguan boa is 1.1 m and 1.9 kg, while the larger female B. c. constrictor is not mature until she reaches 1.6 m and 4.5 kg. Nicaraguan individuals typically have a compact saddle pattern on their backs that is often circular in shape. These boas have a reputation for being "nippy", with some individuals being quick to bite in self-defense.

Mainland specimens from Colombia can be among the larger boas, but this subspecies also includes a number of dwarf insular populations, such as those from various Caribbean islands and the Sonoran Desert of Mexico. These populations represent the smallest of the species.

Some generalizations can be made despite the wide range in which B. c. imperator survives. As one of the smaller Boa constrictor subspecies, they average between 1.3 and 2.5 m in length when fully grown, but have been known to reach 3.7 m. They usually weigh around 6 kg (13 lb), although females are significantly larger than males. Lifespan in the wild is around 20–30 years, but 40 can be exceeded in captivity. Although B. c. imperator exhibits almost identical patterns to the other recognized subspecies of B. constrictor, this subspecies often has a darker tail, usually dark brown or very dark red. They are, however, usually just as colorful as their counterparts, and like the larger boas can be bred into a variety of different colors given the right conditions to breed.


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Wikipedia

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