water moccasin

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water moccasin

or

cottonmouth,

highly venomous snakesnake,
common name for an elongated, limbless reptile of the order Squamata, which also includes the xlizards. Most snakes live on the ground, but some are burrowers, arboreal, or aquatic; one group is exclusively marine. In temperate climates they hibernate.
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, Ancistrodon piscivorus, of the swamps and bayous of the S United States. Like the closely related copperhead, it is a pit viperpit viper,
poisonous snake of the family Crotalidae, primarily a New World family. Like the Old World true vipers (family Viperidae), pit vipers have long, hollow, erectile fangs that are folded back against the roof of the mouth except when the snake is striking.
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 and has a heat-sensitive organ for detecting warm-blooded prey. The young are born live. The young snake is a pale reddish brown with transverse dark brown bands edged with white; as it ages the colors dull to a blotched olive or brown and then to an unmarked olive or blackish in old specimens. The maximum length is 6 ft (2 m), the average from 3 to 4 ft (90–120 cm). A good climber, the water moccasin often relaxes on branches overhanging the water. If startled it erects its head and shows the white interior of its mouth—hence the name cottonmouth. It eats both warm-blooded and cold-blooded animals. It is aggressive in the wild state but may become quite tame in captivity. It is classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
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, subphylum Vertebrata, class Reptilia, order Squamata, family Crotalidae.

water moccasin

[′wȯd·ər ‚mäk·ə·sən]
(vertebrate zoology)
Agkistrodon piscivorus. A semiaquatic venomous pit viper; skin is brownish or olive on the dorsal aspect, paler on the sides, and has indistinct black bars. Also known as cottonmouth.

water moccasin

(also cottonmouth) highly poisonous snake found in southern U.S. [Zoology: NCE, 2490]
References in periodicals archive ?
The effect of reproductive condition on thermoregulation in female Agkistrodon piscivorus near the northwestern range limit.
Nearly half (n = 125, 49.8%) of all snakes observed were cottonmouths (Agkistrodon piscivorus), and cottonmouths comprised 22.9-73.3% of snakes detected on any given survey (Fig.
Lipid reserves of the Eastern Cottonmouth (Agkistrodon piscivorus) at the northern edge of its range.
Robert Dowler, Presidente-electo, presento el Premio Wilks otorgado a Jason Strickland, Angelo State University, por su presentacion "Phylogeography of the cottonmouth, Agkistrodon piscivorus, determined by AFLP and venom protein profiles." El Comite del Premio Wilks del 2011 fue Troy Baird, Michael Tobler, Michael Dixon, Paula Williamson, y Earl Zimmerman.
tridactylum include the cottonmouth, Agkistrodon piscivorus Lacepede (Liner 1954), and the mud snake, Farancia abacura Holbrook (Ernst & Barbour 1989); however, neither of these two predators have been observed in this locality despite nine years of survey (J.
Fifteen individuals of seven species of snakes were collected including the brown snake, Storeria dekayi; the redbelly snake, Storeria occipitomaculata, the cottonmouth, Agkistrodon piscivorus; the ringneck snake, Diadophis punctatus; the eastern ribbon snake, Thamnophis sauritus; the black racer, Coluber constrictor; and the rough earth snake, Virginia striatula.
melanoleucus) and the viperid Agkistrodon piscivorus by Johnson et al.
El ganador del afio 2011 del Premio Wilks fue Jason Strickland, Angelo State University, por su ponencia titulada "Filogeografia del mocasin, Agkistrodon piscivorus, determinado por AFLP y los perfiles de proteinas del veneno."
Western cottonmouths, Agkistrodon piscivorus, are pit vipers that inhabit a wide variety of habitats (Gloyd and Conant, 1990; Werler and Dixon, 2000).
The western cottonmouth, Agkistrodon piscivorus leucostoma, is an iteroparous pit viper that inhabits a wide variety of habitats (Gloyd and Conant, 1990; Werler and Dixon, 2000).