| Greater long-tailed hamster Temporal range: Late Pliocene to Recent | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Rodentia |
| Family: | Cricetidae |
| Subfamily: | Cricetinae |
| Genus: | Tscherskia Ognev, 1914 |
| Species: | T. triton |
| Binomial name | |
| Tscherskia triton | |
The greater long-tailed hamster (Tscherskia triton) is a rodent native to Siberia, the Korean Peninsula, and China. It is the only member of the genus Tscherskia.
The genetic diversity of Tscherskia triton has a positive correlation to population density when using microsatellite markers.
Climate change and human activity have had an influence on the genetic variation of this species. [3]
Male greater long-tailed hamsters exhibit high aggression during both the breeding and non-breeding seasons. Female greater long-tailed hamsters mainly show aggression during the non-breeding season. [4]
The giant panda, also known as the panda bear or simply panda, is a bear species endemic to China. It is characterised by its white coat with black patches around the eyes, ears, legs and shoulders. Its body is rotund; adult individuals weigh 100 to 115 kg and are typically 1.2 to 1.9 m long. It is sexually dimorphic, with males being typically 10 to 20% larger than females. A thumb is visible on its forepaw, which helps in holding bamboo in place for feeding. It has large molar teeth and expanded temporal fossa to meet its dietary requirements. It can digest starch and is mostly herbivorous with a diet consisting almost entirely of bamboo and bamboo shoots.
Hamsters are rodents belonging to the subfamily Cricetinae, which contains 19 species classified in seven genera. They have become established as popular small pets. The best-known species of hamster is the golden or Syrian hamster, which is the type most commonly kept as a pet. Other hamster species commonly kept as pets are the three species of dwarf hamster, Campbell's dwarf hamster, the winter white dwarf hamster and the Roborovski hamster.
A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes, floods, fires, disease, and droughts; or human activities such as genocide, speciocide, widespread violence or intentional culling. Such events can reduce the variation in the gene pool of a population; thereafter, a smaller population, with a smaller genetic diversity, remains to pass on genes to future generations of offspring. Genetic diversity remains lower, increasing only when gene flow from another population occurs or very slowly increasing with time as random mutations occur. This results in a reduction in the robustness of the population and in its ability to adapt to and survive selecting environmental changes, such as climate change or a shift in available resources. Alternatively, if survivors of the bottleneck are the individuals with the greatest genetic fitness, the frequency of the fitter genes within the gene pool is increased, while the pool itself is reduced.
The Père David's deer, also known as the milu or elaphure, is a species of deer native to the subtropical river valleys of China. It grazes mainly on grass and aquatic plants. It is the only extant member of the genus Elaphurus. Some experts suggest demoting Elaphurus to a subgenus of Cervus. Based on genetic comparisons, Père David's deer is closely related to Eld's deer.
Voles are small rodents that are relatives of lemmings and hamsters, but with a stouter body; a longer, hairy tail; a slightly rounder head; smaller eyes and ears; and differently formed molars. They are sometimes known as meadow mice or field mice.
The house mouse is a small mammal of the order Rodentia, characteristically having a pointed snout, large rounded ears, and a long and almost hairless tail. It is one of the most abundant species of the genus Mus. Although a wild animal, the house mouse has benefited significantly from associating with human habitation to the point that truly wild populations are significantly less common than the semi-tame populations near human activity.
Oryza sativa, having the common name Asian cultivated rice, is the much more common of the two rice species cultivated as a cereal, the other species being O. glaberrima, African rice. It was first domesticated in the Yangtze River basin in China 13,500 to 8,200 years ago.
The Mongolian gerbil or Mongolian jird is a rodent belonging to the subfamily Gerbillinae. Their body size is typically 110–135 mm, with a 95–120 mm tail, and body weight 60–130 g, with adult males larger than females. The animal is used in science and research or kept as a small house pet. Their use in science dates back to the latter half of the 19th century, but they only started to be kept as pets in the English-speaking world after 1954, when they were brought to the United States. However, their use in scientific research has fallen out of favor.
Campbell's dwarf hamster is a species of hamster in the genus Phodopus. It was given its common name by Oldfield Thomas in honor of Charles William Campbell, who collected the first specimen in Mongolia on July 1, 1902. It is distinguished from the closely related Djungarian hamster as it has smaller ears and no dark fur on its crown. Campbell's dwarf hamster typically has a narrow dorsal stripe compared to the Djungarian hamster and brown or gray fur on the stomach. This hamster may be raised in captivity and kept as a small pet.
Phodopus, a genus of rodents in the hamster subfamily Cricetinae—a division of the larger family Cricetidae—is a lineage of small hamsters native to central Asia that display unusual adaptations to extreme temperatures. They are the only known hamsters that live in groups and, in some cases, rely on significant contributions by males to the raising of offspring. They are nocturnal and active throughout the year; they do not hibernate. Species of Phodopus, together with members of the genera Cricetulus, Allocricetulus and Tscherskia are called dwarf hamsters because of their small size relative to other hamsters.
The Siamese fighting fish, commonly known as the betta, is a freshwater fish native to Southeast Asia, namely Cambodia, Laos, Myanmar, Malaysia, Indonesia, Thailand, and Vietnam. It is one of 76 species of the genus Betta, but the only one eponymously called "betta", owing to its global popularity as a pet; Betta splendens are among the most popular aquarium fish in the world, due to their diverse and colorful morphology and relatively low maintenance.
Malus sieversii is a wild apple native to the mountains of Central Asia in southern Kazakhstan. It has recently been shown to be the primary ancestor of most cultivars of the domesticated apple. It was first described as Pyrus sieversii due to its similarities with pears in 1833 by Carl Friedrich von Ledebour, a German naturalist who saw them growing in the Altai Mountains.
The masked palm civet, also called the gem-faced civet or Himalayan palm civet, is a viverrid species native to the Indian subcontinent and Southeast Asia. It has been listed as least concern on the IUCN Red List since 2008 as it occurs in many protected areas, is tolerant to some degree of habitat modification, and widely distributed with presumed large populations that are unlikely to be declining.
The Chinese striped hamster, also known as the striped dwarf hamster, is a species of hamster. It is distributed across North Asia from southern Siberia through Mongolia and northeastern China to northern North Korea. An adult Chinese striped hamster weighs 20 to 35 g, and has a body length of 72 to 116 mm with a tail of 15 to 26 mm. It is smaller and has a much shorter tail than the greater long-tailed hamster, Tscherskia triton, which inhabits much of the same range.
The red goral is a species of even-toed ungulate in the subfamily Caprinae in the family Bovidae. It is found in India, Tibet and Myanmar. Its natural habitats are seasonal mountainous areas 1,000 to 2,000 meters above sea level. It is threatened by habitat loss and hunting.
Buff-throated monal-partridge, also known as buff-throated partridge or Szechenyi's monal-partridge, is a member of the family Phasianidae in the order Galliformes. It is endemic to western China.
The cave nectar bat, dawn bat, common dawn bat, common nectar bat or lesser dawn bat is a species of megabat within the genus Eonycteris. The scientific name of the species was first published by Dobson in 1871.
The Amur leopard is a leopard subspecies native to the Primorye region of southeastern Russia and northern China. It is listed as Critically Endangered on the IUCN Red List, as in 2007, only 19–26 wild leopards were estimated to survive in southeastern Russia and northeastern China.
The Yangtze finless porpoise is a species of toothed whale in the family Phocoenidae, the porpoise family. It is endemic to the Yangtze River in China, making it the country's only known freshwater cetacean following the possible extinction of the baiji, a freshwater dolphin also native to the Yangtze. The Yangtze finless porpoise is considered critically endangered and it is estimated that only about 1,249 in 2023 remain. This small toothed whale faces many of the same threats as the baiji: High human activity on the Yangtze, such as illegal fishing, pollution, boat traffic, and dam construction. Due to the rapidly declining population of the species, the Chinese government and conservation charities are working to help save it from extinction.
Phrynocephalus vlangalii, also known as the Qinghai toad-headed agama, the Ching Hai toadhead agama, the Pylzow's toadhead agama, or gecko toadhead agama, is a species of viviparous agamid lizard endemic to the Tibetan Plateau in China. This lizard lives in burrows at high elevations of 2,000 to 4,600 meters. It is also known for its aggression, especially between females during mating season since females usually only have one mate. P. vlangalii curls its tail and shows a patch on its underbelly as defense displays against conspecifics. This lizard also has a variety of gut microbiota that help perform metabolic and biological functions depending on the altitude at which the lizard lives.
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