''Candoia'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of non-venomous
boa
Kwon Bo-ah (; born November 5, 1986), known professionally as BoA, is a South Korean singer, songwriter, dancer, record producer and actress. One of the most successful and influential Korean entertainers, she has been dubbed the " Queen of K- ...
s found mostly in
New Guinea
New Guinea (; Hiri Motu
Hiri Motu, also known as Police Motu, Pidgin Motu, or just Hiri, is a language of Papua New Guinea, which is spoken in surrounding areas of Port Moresby (Capital of Papua New Guinea).
It is a simplified version of ...
,
Melanesia
Melanesia (, ) is a subregion of Oceania in the southwestern Pacific Ocean. It extends from Indonesia's New Guinea in the west to Fiji in the east, and includes the Arafura Sea.
The region includes the four independent countries of Fiji, Va ...
and the
Maluku Islands
The Maluku Islands (; Indonesian: ''Kepulauan Maluku'') or the Moluccas () are an archipelago in the east of Indonesia. Tectonically they are located on the Halmahera Plate within the Molucca Sea Collision Zone. Geographically they are located eas ...
in
Indonesia
Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...
. Five
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 ...
are recognized.
Common names include the bevel-nosed boas and keel-scaled boas.
Description
The
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 the genus ''Candoia'' typically have a rounded and heavy body, with a flattened triangular-shaped head, and an upturned nose. Colors and patterns vary greatly, but most are various shades of brown to black. Species can vary in adult size from to in total length (including the tail). Males are typically smaller than females and can be distinguished by their prominent cloacal spurs.
Distribution and habitat
Snakes of the genus ''Candoia'' are found from
Samoa
Samoa, officially the Independent State of Samoa; sm, Sāmoa, and until 1997 known as Western Samoa, is a Polynesian island country consisting of two main islands (Savai'i and Upolu); two smaller, inhabited islands (Manono Island, Manono an ...
and
Tokelau
Tokelau (; ; known previously as the Union Islands, and, until 1976, known officially as the Tokelau Islands) is a dependent territory of New Zealand in the southern Pacific Ocean. It consists of three tropical coral atolls: Atafu, Nukunonu, a ...
west through
Melanesia
Melanesia (, ) is a subregion of Oceania in the southwestern Pacific Ocean. It extends from Indonesia's New Guinea in the west to Fiji in the east, and includes the Arafura Sea.
The region includes the four independent countries of Fiji, Va ...
to
New Guinea
New Guinea (; Hiri Motu
Hiri Motu, also known as Police Motu, Pidgin Motu, or just Hiri, is a language of Papua New Guinea, which is spoken in surrounding areas of Port Moresby (Capital of Papua New Guinea).
It is a simplified version of ...
and the
Maluku Islands
The Maluku Islands (; Indonesian: ''Kepulauan Maluku'') or the Moluccas () are an archipelago in the east of Indonesia. Tectonically they are located on the Halmahera Plate within the Molucca Sea Collision Zone. Geographically they are located eas ...
in indonesia.
Behavior
All species of ''Candoia'' are primarily nocturnal.
Feeding
The primary diet of ''Candoia'' species consists of frogs and lizards.
Reproduction
In the snakes of the genus ''Candoia'', breeding occurs early in the year, typically after rains. Several males will approach and pursue a single female, though, there is no combat between the males. Females seem to only
ovulate
Ovulation is the release of eggs from the ovaries. In women, this event occurs when the ovarian follicles rupture and release the secondary oocyte ovarian cells. After ovulation, during the luteal phase, the egg will be available to be fertilized ...
once every two or three years and give birth to litters averaging 10 or so neonates. The Solomon Island ground boa (''
C. paulsoni'') is an exception, as it is known to have particularly large litters, occasionally producing 30 or 40 small neonates.
Captivity
Snakes of the genus ''Candoia'' are frequently imported for the exotic pet trade, but are now being bred in captivity with some regularity by private individuals. Their small size and ease of care make them interesting captives, but wild-caught specimens are not known to acclimate well. The stress of captivity manifests itself in the form of lack of interest in food. Their natural diet often presents a problem for hobbyists mainly familiar with using rodents as food.
Species
*) Not including the
nominate 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 ...
.
T')
Type species
In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...
.
Classification
The genus ''Candoia'' is traditionally placed in the subfamily
Boinae
The Boinae are a purported subfamily of boas found in Central and South America as well as the West Indies. In the Integrated Taxonomic Information System (ITIS), the ''Boinae'' are considered an invalid synonym of Boidae.
Genera
''*) Not in ...
; however, a 2013 study comparing DNA sequences of 12 genes of over 4,000 species supported ''Candoia'' as more distantly related, with remaining members of the Boinae being more closely related to the boid subfamily
Erycinae
The Erycinae, known as the Old World sand boas, are a subfamily of nonvenomous snakes in the family Boidae. Species of the subfamily Erycinae are found in Europe, Asia Minor, Africa, Arabia, central and southwestern Asia, India, Sri Lanka, and ...
; thus ''Candoia'' was placed in the newly named subfamily Candoiinae.
References
External links
"The Candoia Page"a
Kingsnake.com Accessed 5 July 2008.
Further reading
*
Gray JE (1842). "Synopsis of the species of prehensile-tailed Snakes, or Family BOIDÆ". ''Zoological Miscellany'' 2: 41-46. (''Candoia'', new genus, p. 43).
*
Smith HM, Chiszar D, Tepedelen K, van Breukelen F (2001). "A revision of the bevel-nosed boas (''Candoia carinata'' complex) (Reptilia: Serpentes)". ''Hamadryad'' 26 (2): 283-315.
{{Taxonbar, from=Q739116
Reptiles of Southeast Asia
Snake genera
Taxa named by John Edward Gray
Reptiles of Oceania