Plateau pika | |
---|---|
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Lagomorpha |
Family: | Ochotonidae |
Genus: | Ochotona |
Species: | O. curzoniae |
Binomial name | |
Ochotona curzoniae (Hodgson, 1858) | |
Plateau pika range |
The plateau pika (Ochotona curzoniae), also known as the black-lipped pika, is a species of mammal in the pika family, Ochotonidae.
It is a small diurnal and non-hibernating mammal weighing about 140 g (4.9 oz) when fully grown. The animals are reddish tan on the top-side with more of a whitish yellow on their under-belly.
They prefer to live in elevations of 3,100 to 5,000 m (10,200 to 16,400 ft), mostly in the Tibetan Plateau, which is where the common name originates from. The species is found in China, India, and Nepal in high alpine deserts, steppe and meadows, as well as tropical and subtropical montane forests. [1]
Plateau pikas are considered to be a keystone species as they play a role in recycling nutrients in soil, providing food to predators such as; foxes, weasels, falcons, Asia pole cat, upland buzzard, and owls. They also provide microhabitats by increasing plant richness and their burrows provides nests for small birds and reptiles.
According to the Chinese biologists who have studied the wildlife of the Hoh Xil (northern part of the Tibetan Plateau), plateau pikas are the favorite food of the area's brown bears. [2] In addition to its role as a prey base, the plateau pika is important for soil health in meadows; the burrowing of the species helps to aerate the soil. The species is currently considered threatened, mostly due to aggressive poisoning campaigns by Chinese populations, predominantly to eliminate competition for food with livestock. [1]
Plateau pikas have mating systems such as monogamous and polygynandrous groups, which contain about three males and 3 to 4 females per family along with their offspring. Females can produce 2 to 5 litters of about 2 to 7 offspring with a three-week interval in between each litter which is why this group of lagomorphs are known to have the fastest growth rates of their order. Their breeding season lasts from April to August and the young do not disperse in the year of birth. Males form hierarchies and females are usually philopatric forming reproductive alliances, helping each other in the care of their offspring, males also contribute in parental care when deterring a predator by emitting an alarm call. Pikas are social animals that live in families of two to five adults and their offspring. [1] Males and females both contribute in protecting their family groups from intruders displaying aggressive behaviors towards others who are not part of their family. [3]
Since plateau pikas live in such extremely cold environments and are a non-hibernating species, they have acquired physiological adaptations to better assist with their survival. These adaptations include their high resting metabolic rate and non- shivering thermogenesis along with the production of leptin which is a thermogenesis regulatory hormone.
Unlike hibernating mammals, plateau pikas do not merely rely on excess body fat to combat extremely cold climates. One important physiological adaptation is their ability to alter the type of their adipose tissue, from white to brown, which promotes non-shivering thermogenesis. [4]
The plateau pika is considered a keystone species [5] and also considered a pest because of the degradation it causes to crops. This causes a competition in foraging [6] with the livestock of farmers such as yaks, sheep, and horses, which in turn affects their livelihood. Conservation efforts for the Plateau pika have focused on a number of strategies. One approach has been to raise awareness among local communities about the important role that the pika plays in the ecosystem and to promote more sustainable farming practices that do not rely on exterminating the animals. [7] This can involve providing alternative methods for protecting crops, such as using fencing or other physical barriers.
Another strategy has been to establish protected areas where the pika and other wildlife can thrive without interference from human activities. For example, the Sanjiangyuan National Nature Reserve in China, [8] which encompasses much of the Tibetan Plateau, has been designated as a protected area for the pika and other endangered species.
Finally, some researchers have been studying the biology and behavior of the Plateau pika in order to better understand the species and its role in the ecosystem. This information can then be used to inform conservation efforts and management strategies.
Overall, conservation efforts for the Plateau pika are aimed at ensuring the long-term survival of the species while also promoting sustainable development in the region. [9] By working to protect this important component of the high-altitude ecosystem, conservationists hope to maintain the ecological integrity and biodiversity of the region for generations to come.
A pika is a small, mountain-dwelling mammal native to Asia and North America. With short limbs, a very round body, an even coat of fur, and no external tail, they resemble their close relative, the rabbit, but with short, rounded ears. The large-eared pika of the Himalayas and nearby mountains lives at elevations of more than 6,000 m (20,000 ft).
The Tibetan fox, also known as the Tibetan sand fox, is a species of true fox endemic to the high Tibetan Plateau, Ladakh plateau, Nepal, China, Sikkim, and Bhutan, up to elevations of about 5,300 m (17,400 ft). It is listed as Least Concern in the IUCN Red List, on account of its widespread range in the Tibetan Plateau's steppes and semi-deserts.
The mountain weasel, also known as the pale weasel, Altai weasel or solongoi, primarily lives in high-altitude environments, as well as rocky tundra and grassy woodlands. This weasel rests in rock crevices, tree trunks, and abandoned burrows of other animals or the animals it previously hunted. The home range size of this animal is currently unknown. Geographical distribution for this species lies in parts of Asia from Kazakhstan, Tibet, and the Himalayas to Mongolia, northeastern China, and southern Siberia. The most common area for this species, however, is Ladakh, India. The conservation status, according to the IUCN, is near threatened because it is considered to be in significant decline and requires monitoring mainly because of habitat and resource loss.
The northern pika is a species of pika found across mountainous regions of northern Asia, from the Ural Mountains to northern Japan and south through Mongolia, Manchuria and northern Korea. An adult northern pika has a body length of 12.5–18.5 centimeters (4.9–7.3 in), and a tail of 0.5–1.2 centimeters (0.20–0.47 in). The pika sheds its fur twice annually, bearing a reddish-brown coat in the summer and grayish-brown coat in winter. It feeds on various plant material and makes "hay piles" for winter use.
Blyth's vole is a species of rodent in the family Cricetidae. It was previously the only species in the genus Phaiomys, but was moved to Neodon in 2016. It is found in mountainous regions in northern India, Nepal and China. It is a burrowing rodent and lives in small colonies. It has a wide distribution and faces no particular threats so the International Union for Conservation of Nature has assessed its conservation status as being of "least concern".
The Chinese zokor is a species of rodent in the family Spalacidae. It is endemic to China, ranging from Qinghai Province eastwards to Beijing in steppe and alpine grasslands. Henri Milne-Edwards first described it in 1867. Eradication programs in the 1990s in Qinghai Province resulted in a population decline to less than a third of the former population. It is considered common and has been assessed as Least Concern by IUCN.
The Daurian pika is a small relative of rabbits and hares in the order Lagomorpha. It is well known for its “barking” alarm call, and for its peculiar habit of making hay to help survive the winter. There are 4 recognized subspecies, Ochotona dauurica annectens, O.d. bedfordi, O.d. dauurica, and O.d. mursavi. Daurian pikas, like other lagomorphs, are characterized by a secondary set of incisor teeth. They are sexually monomorphic, with thick reddish coats. Pikas have no external tail, and their ears are large and rounded. The auditory bullae, a feature of the skull of daurian pikas are small in comparison to many other pikas. This is thought to be related to their fairly low altitude habitat preference. They are considered keystone species within their habitat.
The Chinese red pika is a species of mammal in the family Ochotonidae. Typical of a pika it has short limbs, a small tail and round ears. Specific to the Chinese red pika has distinctive red color in its pelt. The Chinese pika typically lives in rocky terrain at altitudes between 600 and 1200 meters. and is endemic to the East Qinghai, West Gansu and Northern Sichuan provinces of China and Eastern Tibet.
Glover's pika is a species of mammal in the family Ochotonidae. It was first described in 1922, by Michael Rogers Oldfield Thomas. The summer dorsal pelage is grayish rufous, grayish brown, or tea brown in colour. The winter pelage is similar to the summer pelage, but is lighter in tone. Endemic to China, it is found in high altitudes of northeastern Tibet, southwestern Qinghai, western Sichuan, and northwestern Yunnan. It is a generalist herbivore, and is known to construct haypiles. It is rated as a species of least concern by the International Union for Conservation of Nature. It is also regionally red listed as least concern in China.
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