The Bismarck ringed python (''Bothrochilus boa'') is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

of snake in the genus '' Bothrochilus''Mehrtens JM. 1987. Living Snakes of the World in Color. New York: Sterling Publishers. 480 pp. . found on the islands of the

Bismarck Archipelago The Bismarck Archipelago (, ) is a group of islands off the northeastern coast of New Guinea in the western Pacific Ocean and is part of the Islands Region of Papua New Guinea. Its area is about 50,000 square km. History The first inhabitants o ...

. No

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

are recognized.

Description

Adults grow to a length of . The color pattern consists of a series of brilliant orange and black rings in juveniles, but this fades in about a year as the snakes mature. Adults are usually a shade of brown with black rings, or a uniform blackish brown. Usually, there is a light spot behind the eye. Some specimens may have black rings that are irregular, incompletely formed or even absent. The

scales Scale or scales may refer to: Mathematics * Scale (descriptive set theory), an object defined on a set of points * Scale (ratio), the ratio of a linear dimension of a model to the corresponding dimension of the original * Scale factor, a number w ...

are highly

iridescent Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear to gradually change color as the angle of view or the angle of illumination changes. Examples of iridescence include soap bubbles, feathers, butterfl ...

Distribution and habitat

Found on the

island An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island ...

s of the

, including

Umboi Umboi (also named Rooke or Siassi) is a volcanic island between the mainland of Papua New Guinea and the island of New Britain. It is separated from New Britain by the Dampier Strait and Huon Peninsula, and New Guinea by the Vitiaz Strait. It ha ...

New Britain New Britain ( tpi, Niu Briten) is the largest island in the Bismarck Archipelago, part of the Islands Region of Papua New Guinea. It is separated from New Guinea by a northwest corner of the Solomon Sea (or with an island hop of Umboi the Dam ...

, Gasmata (off the southern coast),

Duke of York Duke of York is a title of nobility in the Peerage of the United Kingdom. Since the 15th century, it has, when granted, usually been given to the second son of English (later British) monarchs. The equivalent title in the Scottish peerage was Du ...

and nearby Mioko, New Ireland and nearby

Tatau Tatau is a town, and the capital of the Tatau District (4,945.8 square kilometres) in Bintulu Division, Sarawak, Malaysia. The district's reported total population for Tatau (year 2010 census) was 30,383. Tatau became a district in 1987. Bef ...

(off the east coast), the

New Hanover Island New Hanover Island, (german: Neuhannover), also called Lavongai, is a large volcanic island in the New Ireland Province of Papua New Guinea. This region is part of the Bismarck Archipelago and lies at . Measuring some , it had a population of 5, ...

s and

Nissan Island Nissan Island (also Green Island or Sir Charles Hardy Island) is the largest of the Green Islands of Papua New Guinea. It is located at , about 200 km east of Rabaul on New Britain and about 200 km north-west of Bougainville. The isl ...

, the type locality given is "Nouvelle Irlande" (New Ireland). The Bismarck ringed python inhabits rain forests in open and/or cultivated areas, and is often found in piles of

coconut The coconut tree (''Cocos nucifera'') is a member of the palm tree family ( Arecaceae) and the only living species of the genus ''Cocos''. The term "coconut" (or the archaic "cocoanut") can refer to the whole coconut palm, the seed, or the ...

husks.

Behavior

These snakes are

nocturnal Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed sens ...

and

fossorial A fossorial () animal is one adapted to digging which lives primarily, but not solely, underground. Some examples are badgers, naked mole-rats, clams, meerkats, and mole salamanders, as well as many beetles, wasps, and bees. Prehistoric eviden ...

Feeding

Their diet consists primarily of small rodents, for which they actively forage. They have been reported to enter houses and agricultural structures in search of prey. Hatchlings feed on lizards and juvenile rodents.

Reproduction

Oviparous Oviparous animals are animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive method of most fish, amphibians, most reptiles, and all pterosaurs, dinosaurs (including birds), and ...

, they lay up to a dozen eggs that are generally "brooded" by the female, although this is not always the case.

References

External links

* {{Taxonbar, from=Q595156 Bothrochilus Reptiles of Papua New Guinea Snakes of Asia Taxa named by Leopold Fitzinger Reptiles described in 1837