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Nerodia
''Nerodia'' is a genus of nonvenomous colubrid snakes commonly referred to as water snakes due to their aquatic behavior. The genus includes nine species, all native to North America. Description ''Nerodia'' species vary greatly, but all are relatively heavy-bodied snakes, sometimes growing to 1.2 m (4 feet) or longer in total length. They have flattened heads, with small eyes that have round pupils, and keeled dorsal scales. Species like '' N. fasciata'' display distinct banding, whereas other species, like '' N. erythrogaster'', have blotching, and those like '' N. rhombifer'' have diamond-shaped patterning. Most species are brown or olive green, or some combination thereof with markings being brown, or black. Yellow or cream-colored accenting is common. Behavior Water snakes, as their name implies, are largely aquatic. They spend the vast majority of their time in or very near permanent sources of water. Often, they can be found basking on tree branches that overhang slow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerodia Rhombifer2
''Nerodia'' is a genus of nonvenomous colubrid snakes commonly referred to as water snakes due to their aquatic behavior. The genus includes nine species, all native to North America. Description ''Nerodia'' species vary greatly, but all are relatively heavy-bodied snakes, sometimes growing to 1.2 m (4 feet) or longer in total length. They have flattened heads, with small eyes that have round pupils, and keeled dorsal scales. Species like '' N. fasciata'' display distinct banding, whereas other species, like '' N. erythrogaster'', have blotching, and those like '' N. rhombifer'' have diamond-shaped patterning. Most species are brown or olive green, or some combination thereof with markings being brown, or black. Yellow or cream-colored accenting is common. Behavior Water snakes, as their name implies, are largely aquatic. They spend the vast majority of their time in or very near permanent sources of water. Often, they can be found basking on tree branches that overhang slow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerodia Fasciata
The banded water snake or southern water snake (''Nerodia fasciata'') is a species of mostly aquatic, nonvenomous, colubrid snakes endemic to the Midwest and Southeastern United States. Geographic range ''N. fasciata'' is natively found from Indiana, south to Louisiana, and east to Florida. In 1992, its congener ''Nerodia sipedon'' (northern or common water snake) and it were found in three sites in California by the US Fish and Wildlife Service (USFWS). In 2009, more than 300 banded water snakes were caught in suburbs of Los Angeles by the Nerodia Working Group of USFWS. Then in May 2016, the species was found in the Colorado River basin near Yuma, Arizona. Further trapping did indeed catch large numbers of them, indicating that a thriving invasive population exists in that area. Description Adults of the banded water snake measure from in total length, with a record size (in the Florida subspecies) of in total length. In one study, the average body mass of adult banded w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerodia Erythrogaster
''Nerodia erythrogaster'', commonly known as the plain-bellied water snake or plainbelly water snake, is a familiar species of mostly aquatic, nonvenomous, colubrid snake endemic to the United States. Description The plain-bellied water snake is a large, thick-bodied, solid-colored snake. Subspecies can be brown, gray, olive green, greenish-gray, and black in color. Some lighter colored snakes display dark dorsal blotches. This snake can be distinguished from other water snakes by its plain, unmarked underside varying in color from red to yellow. It gets its common name because it has no marking on its underside. Its scientific name ''erythrogaster'' comes from the Greek word “''erythros''” meaning red and “''gaster''” meaning belly. This species exhibits geographically defined phenotypic variation which results in a number of different subspecies. Adults vary in size from 24 to 40 inches (76–122 cm) in total length. Juvenile snakes have banding patterns similar t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerodia Clarkii
''Nerodia clarkii'', commonly known as the salt marsh snake, is a species of semiaquatic, nonvenomous, colubrid snake found in the southeastern United States, in the brackish salt marshes along the Gulf of Mexico from Florida to Texas, with a population in northern Cuba. Etymology The specific name, ''clarkii'', is in honor of American surveyor and naturalist John Henry Clark (1830-1885). Description Salt marsh snakes grow to a total length (including tail) of to , and are highly variable in pattern and coloration. Populations of the Gulf salt marsh snake ('' N. c. clarkii'') from the vicinity of Corpus Christi, Texas, to the Gulf Hammock region of Florida are gray, tan or yellow with four brown to black longitudinal stripes. Populations in Florida from Tampa Bay south to Miami and northward along the Atlantic coast to the vicinity of Cape Canaveral are referred to as the mangrove salt marsh snake (''N. c. compressicauda''). This subspecies exhibits many colors and pattern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerodia Rhombifer
''Nerodia rhombifer'', commonly known as the diamondback water snake, is a species of nonvenomous natricine colubrid endemic to the central United States and northern Mexico. There are three recognized subspecies of ''N. rhombifer'', including the nominotypical subspecies. Taxonomy and systematics The species was first described as ''Tropidonotus rhombifer'' by Edward Hallowell in 1852. Description The diamondback water snake is predominantly brown, dark brown, or dark olive green in color, with a black net-like pattern along the back, with each spot being vaguely diamond-shaped. Dark vertical bars and lighter coloring are often present down the sides of the snake. In typical counter-colored fashion, the underside is generally a yellow or lighter brown color, often with black blotching. The dorsal scales are heavily keeled, giving the snake a rough texture. The dorsal scales are arranged in 25 or 27 rows at midbody. There are usually 3 postoculars. Adult males have multip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerodia Cyclopion
The green water snake (''Nerodia cyclopion'') is a common species of nonvenomous natricine snake endemic to the southeastern United States. Geographic range ''N. cyclopion'' is distributed from the Florida panhandle westward to Louisiana, and northward through the Mississippi Valley into southern Illinois. Stejneger, L., and T. Barbour (1917). ''A Check List of North American Amphibians and Reptiles''. Cambridge, Massachusetts: Harvard University Press. 125 pp. (''Natrix cyclopion'', pp. 94-95). More precisely, it is found in southwestern Alabama, southeastern Arkansas, northwestern Florida, southern Illinois, southwestern Indiana, western Kentucky, Louisiana, southern Mississippi, southeastern Missouri, western Tennessee, and southeastern Texas. The type locality is New Orleans, Louisiana. Description ''N. cyclopion'' differs from most other species of North American water snakes by having one or more small scales under the eye, giving the appearance of a ring of small plat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Water Snake
The green water snake (''Nerodia cyclopion'') is a common species of nonvenomous natricine snake endemic to the southeastern United States. Geographic range ''N. cyclopion'' is distributed from the Florida panhandle westward to Louisiana, and northward through the Mississippi Valley into southern Illinois. Stejneger, L., and T. Barbour (1917). ''A Check List of North American Amphibians and Reptiles''. Cambridge, Massachusetts: Harvard University Press. 125 pp. (''Natrix cyclopion'', pp. 94-95). More precisely, it is found in southwestern Alabama, southeastern Arkansas, northwestern Florida, southern Illinois, southwestern Indiana, western Kentucky, Louisiana, southern Mississippi, southeastern Missouri, western Tennessee, and southeastern Texas. The type locality is New Orleans, Louisiana. Description ''N. cyclopion'' differs from most other species of North American water snakes by having one or more small scales under the eye, giving the appearance of a ring of small plat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerodia Clarkii Clarkii
''Nerodia clarkii clarkii'', the Gulf salt marsh snake, is a subspecies of '' N. clarkii'' that is indigenous to the south-eastern United States. It is a nonvenomous, colubrid snake that inhabits coastal salt marshes and brackish estuaries along the coast of the Gulf of Mexico from Florida to Texas. Description The Gulf salt marsh snake is a moderately stout aquatic snake. Adult specimens attain an average total length (including tail) of , with the record maximum total length at . The color pattern in this subspecies is variable, but adults tend to have a dorsum that ranges from dark gray to reddish-brown with four yellowish longitudinal stripes down the body, two on each side. The belly is dark gray to reddish-brown with one to three rows of pale spots. Reproduction The Gulf salt marsh snake reaches sexual maturity at three years. Females give birth to 2-44 live young that range from in total length. Their typical lifespan is up to 20 years. Diet ''N. c. clarkii'' is pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nerodia Erythrogaster Neglecta
The copperbelly water snake or copperbelly (''Nerodia erythrogaster neglecta'') is a subspecies of nonvenomous colubrid snake endemic to the Central United States. Description Copperbelly water snakes have a solid dark (usually black but bluish and brown) back with a bright orange-red belly. They grow to a total length of . They are not venomous. The longest total length on record is for a specimen from the northern edge of their range. Newborn copperbellies are in total length, and in a year are about in total length. They are patterned with two-toned, reddish-brown, saddle-like crossbanding with reddish-orange chins and lips. Their bellies are light orange. They are cryptic, camouflaged, secretive and hardly ever seen. Habitat Copperbellies live in lowland swamps or other warm, quiet waters. Lowland and some upland woods are almost always part of the swamp habitat. Recent studies have shown that at least of more or less continuous swamp-forest habitat is necessary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snake
Snakes are elongated, limbless, carnivorous reptiles of the suborder Serpentes . Like all other squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Many species of snakes have skulls with several more joints than their lizard ancestors, enabling them to swallow prey much larger than their heads (cranial kinesis). To accommodate their narrow bodies, snakes' paired organs (such as kidneys) appear one in front of the other instead of side by side, and most have only one functional lung. Some species retain a pelvic girdle with a pair of vestigial claws on either side of the cloaca. Lizards have evolved elongate bodies without limbs or with greatly reduced limbs about twenty-five times independently via convergent evolution, leading to many lineages of legless lizards. These resemble snakes, but several common groups of legless lizards have eyelids and external ears, which snakes lack, although this rule is not universal (see Amphisbaen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roger Conant (herpetologist)
Roger Conant (May 6, 1909 – December 19, 2003) was an American herpetologist, author, educator and conservationist. He was Director Emeritus of the Philadelphia Zoo and adjunct professor at the University of New Mexico. He wrote one of the first comprehensive field guides for North American reptiles in 1958 entitled: ''A Field Guide to Reptiles and Amphibians of Eastern and Central North America'', in the Peterson Field Guide series. Biography Born in Mamaroneck, New York, Conant lost his father when he was young. When he was a teenager he took a job at a local zoo to help his mother make ends meet, which, along with participating in the Boy Scouts of America, began his lifelong passion for reptiles. He was the first Eagle Scout in Monmouth County Council, New Jersey in 1924. He moved to Toledo, Ohio in 1929 and worked as Curator of Reptiles, and later General Curator at the Toledo Zoo from 1929 to 1935. In 1935 he returned to Philadelphia and became the Curator of Reptiles at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colubridae
Colubridae (, commonly known as colubrids , from la, coluber, 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest species of the family date back to the Oligocene epoch. Colubrid snakes are found on every continent except Antarctica. Description While most colubrids are not venomous (or have venom that is not known to be harmful to humans) and are mostly harmless, a few groups, such as genus ''Boiga'', can produce medically significant injuries. In addition, the boomslang The boomslang (, , or ; ''Dispholidus typus'') is a large, highly venomous snake in the family Colubridae. Taxonomy and etymology Its common name means "tree snake" in Afrikaans and Dutch – ''boom'' meaning "tree", and ''slang'' meaning "sna ..., the twig snakes, and the Asian genus ''Rhabdophis'' have caused human fatalities. Some colubrids are described as snake dentition, opisthoglyphous (often called "rear-fanged"), meaning they have elongated, grooved teet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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