| Rana amurensis | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Amphibia |
| Order: | Anura |
| Family: | Ranidae |
| Genus: | Rana |
| Species: | R. amurensis |
| Binomial name | |
| Rana amurensis Boulenger, 1886 | |
Rana amurensis (Khabarovsk frog, Siberian wood frog, Heilongjiang brown frog or Amur brown frog) is a species of true frog found in northern Asia. Rana coreana was previously included in this species as a subspecies. [1] [2]
It ranges across western Siberia, as well as northeastern China, northeastern Mongolia, and on the northern Korean Peninsula and on Sakhalin. [3] Found at latitudes up to 71° N, it is the northernmost wild amphibian species. [4] Favoring lowlands, it is seldom encountered at elevations of more than 600 m. [1] A habitat generalist, Rana amurensis favors open ground, but is also found in both deciduous and coniferous forests. In the winter, it hibernates on pond bottoms.
According to the IUCN, the chief threat to the species is habitat loss, as it is only mildly tolerant of disturbance. In addition, it has become a frequent subject of hunting in Russia since the 1990s. It is not considered threatened on a global scale though. [1]
Adults are light brown with smooth skin and irregular dark brown and yellow stripes, with a body length of 2–2.5 cm (0.79–0.98 in). [5]
Rana amurensis favors beetles, and consumes 1.2–2.5 g (0.0026–0.0055 lb) of food per day. The average lifespan is three years. Their breeding season is very early, starting in late February in Korea. An egg sac contains 30-60 eggs. [5]
Lithobates sylvaticus or Rana sylvatica, commonly known as the wood frog, is a frog species that has a broad distribution over North America, extending from the boreal forest of the north to the southern Appalachians, with several notable disjunct populations including lowland eastern North Carolina. The wood frog has garnered attention from biologists because of its freeze tolerance, relatively great degree of terrestrialism, interesting habitat associations, and relatively long-range movements.
Rana is a genus of frogs commonly known as the Holarctic true frogs, pond frogs or brown frogs. Members of this genus are found through much of Eurasia and western North America. Many other genera were formerly included here. These true frogs are usually largish species characterized by their slim waists and wrinkled skin; many have thin ridges running along their backs, but they generally lack "warts" as in typical toads. They are excellent jumpers due to their long, slender legs. The typical webbing found on their hind feet allows for easy movement through water. Coloration is mostly greens and browns above, with darker and yellowish spots.
The pickerel frog is a small North American frog, characterized by the appearance of seemingly "hand-drawn" squares on its dorsal surface.
The California red-legged frog is a species of frog found in California (USA) and northern Baja California (Mexico). It was formerly considered a subspecies of the northern red-legged frog. The frog is an IUCN near-threatened species as of 2021, has a NatureServe conservation status of imperiled as of 2015, and is a federally listed threatened species of the United States that is protected by law.
The Columbia spotted frog is a North American species of frog. It is green to brown in color with spots on the dorsal surface. The belly and upper lip are white in color. Individuals can be distinguished from other Rana species by their shorter back legs, narrow snout, and upturned eyes. Since they spend most of their time in the water, they also have more webbing in their hind feet than similar species. Although not threatened, this animal has been studied as a model species for the effects of habitat fragmentation.
The crawfish frog is a medium-sized species of frog native to the prairies and grasslands of the central United States. It gets its name because it inhabits the burrows of crayfish for most of the year. They have defined golden or black circles all over their body.
The northern red-legged frog is a species of amphibian, whose range is the coastal region stretching from southwest British Columbia to southern Mendocino County in Northern California, and is protected in Oregon and California. As a member of the genus Rana, this species is considered a true frog, with characteristic smooth skin and a narrow waist. This frog requires still waters for breeding, and is rarely found at any great distance from its breeding ponds or marshes.
The Oregon spotted frog is a member of the frog family Ranidae of order Anura. It is a medium-sized aquatic frog endemic to the Pacific Northwest and historically well distributed in the Puget Trough/Willamette Valley province and the Cascade Mountains of south-central Washington and Oregon. It is relatively rare within its range and is listed globally as vulnerable.
The Huanren frog is a species of true frog found in East Asia. It was originally believed to be endemic to Huanren County, Liaoning, China, but was later also found in South Korea; it is presumed to be present in North Korea, as well. It is closely related to the Dybowski's frog, Rana dybowskii, and specimens collected before 1991 were incorrectly identified as that species. Distinguishing factors include the absence of a vocal sac.
Dybowski's frog is a species of true frog found in Northeast Asia. It is found in the Russian Far East, the Korean Peninsula, and the Japanese island of Tsushima. It may also exist in northeastern China, but this has not been confirmed.
Pelophylax nigromaculatus, is a species of true frog found in East Asia, first described in 1861. This widespread and common frog has many common names, including dark-spotted frog, black-spotted pond frog, and black-spotted frog.
The Iberian frog, also known as Iberian stream frog, is a species of frog in the family Ranidae found in Portugal and Spain. Its natural habitats are rivers, mountain streams and swamps. It is threatened by habitat loss, introduced species, climate change, water contamination, and increased ultraviolet radiation.
The plateau brown frog or plateau wood frog is a species of frog in the family Ranidae, endemic to the plateau region of western China. It was previously included in Rana chensinensis but it now considered a valid species. It is a common frog in suitable habitats that include alpine meadows, marshland and grassland. It hibernates in streams. It is not considered threatened by the IUCN.
Rana longicrus, also known as the Taipa frog or long-legged brown frog, is a species of frog in the family Ranidae. It is distributed to northern and central Taiwan.
The Pyrenean frog or Pyrenees frog is a species of frogs in the family Ranidae found in the Pyrenees mountains of France and Spain. Its natural habitats are fast-moving mountain streams and their surroundings. The IUCN lists it as "endangered".
The carpenter frog is a species of true frog found on coastal plain of the Atlantic coast of the United States between central New Jersey and northeastern Florida.
The Korean brown frog is a species of frog in the genus Rana. It is native to the Korean Peninsula and Shandong, China.
Sanguirana igorota is a species of true frog, family Ranidae. It is endemic to Cordillera Central of the island of Luzon, Philippines. Its closest relative is Sanguirana luzonensis, and it has even been considered synonym of that species; a later study suggests still unresolved relationships between S. igorota, S. luzonensis, and S. tipanan. Common name Taylor's Igorot frog has been coined for this species.
Rana ulma is a species of frog in the family Ranidae. It is endemic to Okinawa Islands, in the central Ryukyu Islands of Japan. It is currently only known from northern Okinawa Island and from Kume Island. Common names Okinawa frog and Ryukyu brown frog have been used for this species; the latter can refer to this species or to Rana kobai. The specific name ulma means "coral island" in Uruma dialect of Okinawa.
Data related to Rana amurensis at Wikispecies
