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Rana Ishikawae Frog (Odorrana ishikawae)
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Description: Ishikawa's Frog, Odorrana ishikawae, is a species of frog in the Ranidae family. It is endemic to Japan. Its natural habitats are temperate forests, rivers, and intermittent rivers. The body of this species is slender. The canthus is blunt, and the tympanum is circular. The hindlimb webbing is moderate. The skin on the back is scattered with large warts which contain radiating striae and are surrounded by tubercles. There are 1-7 vomerine teeth. The tips of the fingers and the toes have large discs with circummarginal grooves. There is no dorsolateral fold. The mean snout to vent length for males is 97 mm (range 88-106)and for females it is 110 mm (range 105-117). There are a pair of vocal sacs and openings at the corners of the mouth. The males have nuptial pads that are yellowish brown and poorly developed. This species is found on the islands of Amamaioshima and Okinawajima in Japan. It lives near streams in mountainous forests. R. ishikawae breeds from January to May in small pools in the cracks of large rocks or underground on the banks of streams. The mating call has one note that lasts for 0.6 seconds. In breeding season the Ishikawae Frog (Odorrana ishikawae) can lay up to 1,000 eggs. It is threatened by habitat loss. The major threat is deforestation, along with the development around stream areas (through road and dam construction), which has led to severe fragmentation of the species' habitat.
Uploaded By: femcat38
Date: 10/9/2011
Views: 469
