| Elaphe schrenckii | |
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Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Colubridae |
| Genus: | Elaphe |
| Species: | E. schrenckii |
| Binomial name | |
| Elaphe schrenckii (Strauch, 1873) | |
| Synonyms [2] | |
List
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Elaphe schrenckii is a species of nonvenomous snake in the family Colubridae. The species is indigenous to Northeast Asia.
Common names for E. schrenckii include Amur rat snake, Manchurian black racer, Manchurian black water snake, Russian rat snake, Schrenck's rat snake, and Siberian rat snake.
Elaphe schrenckii, formerly E. schrenckii schrenckii, is similar to the Korean rat snake E. anomala , which was once thought to be a subspecies of E. schrenckii and was classified as E. schrenckii anomala. However, under the current taxonomic arrangement of Elaphe they are no longer considered as members of the same species. The Korean Ratsnake is currently classified as E. anomala while the Amur Ratsnake remains as E. schrenckii.
The specific name, schrenckii, is in honor of zoologist Leopold von Schrenck. [3]
The species E. schrenckii is on the China Species Red List with a classification of "Vulnerable VU". [4] : 530 It is an officially protected species in Russia [ citation needed ] and South Korea. [1] [5] Globally it is considered to be of "least concern" by the International Union for Conservation of Nature. [1]
Endemic to Northeast Asia, E. schrenckii is found in China, Korea, Mongolia, and Russia. It occurs in Russia and China, to the east to Chabarowsk in the Amur region, west to the Chingan mountains, and north to Manchuria (Northeastern China). The common name, Russian rat snake, is misleading as only a small portion of the geographic range of E. schrenckii is in Russia. [6] It has been reported from Chinese provinces of Jilin, Heilongjian, and the Quingyuan area of Liaoning. (Ji Daming e.a., 1985). [7]
In the Netherlands the species occurs as an introduced exotic around Groningen airport near Eelde, where it was first seen in the mid nineteen nineties. Reportedly, pet snakes were released into the wild by someone who did not expect that they would survive the winter. However, the snakes which were hardier than expected bred, and the species is now gradually increasing its range. [8]
As one common name, Manchurian black water snake, suggests, this species inhabits fairly moist biotopes such as forest clearings, scrub, farmland, hiding amongst cavities in trees, piles of stone or wood, and when threatened can flee up a tree or into the water. E. schrencki has been noted up to 6 m (20 ft) high in trees. This species occurs up to 2,000 m (6,600 ft) altitude and can live in cooler areas than many other snakes. [9]
E. schrenckii can reach a total length (including tail) of 1.4–1.8 m (4.6–5.9 ft). It is among the largest and most robust of all the rat snake species. It varies greatly in colouration, from creme saddles to dark brown saddles. Many captive bred specimens have been line bred to produce clean yellow saddles. The northern, darker, is the most common variety. This species has 200-236 ventral scales, 55-78 subcaudal scales, and 21-23 rows of dorsal scales.[ citation needed ]
E. schrenckii feeds primarily on small mammals, birds, and bird eggs. It is often found in wetlands, but also found in a wide variety of mainly moist environments such as scrub land, farmland, river banks, swamp land, gardens, stones, log piles, forests, and up in trees. The Manchurian black water snake is an excellent swimmer (hence one common name) and is a very good climber, as it is semi-arboreal. This snake is believed to be mostly crepuscular (active only at dawn and dusk).
Adult females of E. schrenckii lay from 6 to 30 eggs in June or July. They may retain their eggs for a time, as they may deposit them in a well-advanced state. Eggs usually hatch within 40 days.[ citation needed ]
Rat snakes are members – along with kingsnakes, milk snakes, vine snakes and indigo snakes – of the subfamily Colubrinae of the family Colubridae. They are medium to large constrictors and are found throughout much of the Northern Hemisphere. They feed primarily on rodents. Many species make attractive and docile pets and one, the corn snake, is one of the most popular reptile pets in the world. Like all snakes, they can be defensive when approached too closely, handled, or restrained. However, rat snake bites are not dangerous to humans. Like nearly all colubrids, rat snakes pose no threat to humans. Rat snakes were long believed to be completely nonvenomous, but recent studies have shown that some Old World species do possess small amounts of venom, though the amount is negligible relative to humans.
The corn snake, sometimes called red rat snake is a species of North American rat snake in the family Colubridae. The species subdues its small prey by constriction. It is found throughout the southeastern and central United States. Though superficially resembling the venomous copperhead and often killed as a result of this mistaken identity, the corn snake lacks functional venom and is harmless. The corn snake is beneficial to humans because it helps to control populations of wild rodent pests that damage crops and spread disease.
Pantherophis obsoletus, also known commonly as the western rat snake, black rat snake, pilot black snake, or simply black snake, is a nonvenomous species of snake in the family Colubridae. The species is native to central North America. There are no subspecies that are recognized as being valid. Its color variations include the Texas rat snake. Along with other snakes of the eastern United States, like the eastern indigo snake and the eastern racer, it is called “black snake”.
The beauty rat snake, also called the beauty ratsnake, the beauty snake, or the cave racer, is a species of snake in the family Colubridae. The species is native to the eastern and southeastern regions of Asia. It is a long, thin, semi-arboreal species of snake with several recognized subspecies. This constrictor feeds on rodents, and though it is favored in some locations as a natural pest control or pet, it is also considered an invasive species in other locations.
Peter Leopold von Schrenck was a Russian zoologist, geographer and ethnographer.
Elaphe is a genus of snakes in the family Colubridae. Elaphe is one of the main genera of the rat snakes, which are found in many regions of the northern hemisphere. Elaphe species are medium to large constrictors by nature.
The mandarin rat snake is a species of nonvenomous colubrid snake endemic to Asia. It is closely related to Euprepiophis conspicillata, the Japanese forest rat snake. Mandarin rat snakes are one of the most popular rat snakes found in the pet trade.
Coelognathus radiatus, commonly known as the radiated ratsnake, copperhead rat snake, or copper-headed trinket snake, is a nonvenomous species of colubrid snake.
Pantherophis bairdi is a species of harmless snake in the family Colubridae. The species is native to the southwestern United States and adjacent northeastern Mexico. No subspecies are recognized as being valid.
The Japanese rat snake is a medium-sized colubrid snake found throughout the Japanese archipelago as well as on the Russian-administered Kunashir Island. In Japanese it is known as the aodaishō or "blue general". It is non-venomous. It is hunted by eagles and tanukis.
Elaphe carinata, the king ratsnake, is a species of Colubrid snake found in Southeast and East Asia.
The Italian Aesculapian snake is a species of snake in the Colubridae family.
Coelognathus is a genus of seven species of rat snakes in the subfamily Colubrinae of the family Colubridae. The species, which are native to South Asia and Southeast Asia, were formerly assigned to the genus Elaphe. Based on morphological evidence and protein similarities, in 2001, Helfenberger revalidated the name Coelognathus that had originally been proposed by Leopold Fitzinger in 1843. The distinction between Coelognathus and Elaphe was further supported by mitochondrial DNA sequence and additional morphological evidence in 2005.
Elaphe quatuorlineata is a member of the family Colubridae. The four-lined snake is a non-venomous species and one of the largest of the European snakes.
Pantherophis alleghaniensis, commonly called the eastern rat snake, is a species of non venomous snake in the family Colubridae. The species is endemic to North America.
Elaphe anomala commonly known as the Korean rat snake, GuReongEe is a non-venomous species of colubrid snake known from China and Korea. Its common names include Amur ratsnake, southern Amur ratsnake. It is a semi-arboreal snake that can be found in grasslands, dry scrub, rocky areas, and on the banks of rivers and lakes. It grows to 150–180 cm (59–71 in).
Elaphe dione, commonly known as Dione's rat snake, the steppe rat snake, or the steppes rat snake, is a species of snake in the family Colubridae. The species is native to Asia and Eastern Europe. There are no subspecies that are recognized as being valid. A large specimen from Putyatin Island measured up to 90 cm (3.0 ft) in length.
Euprepiophis perlaceus, also known as Sichuan rat snake or pearl-banded rat snake, is a species of snake in the family Colubridae snake. It is endemic to western Sichuan Province in China. This snake is designated as Endangered by the IUCN Red List. It is found in the Palearctic.
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