Jeju Gotjawal

Archive for June, 2010

red-side water snake (Rhabdophis tigrinus tigrinus) 유혈목이

by on Jun.01, 2010, under reptile

Characteristics : It is about 60~140cm in length. This species in Jeju is usually longer than 1m. The body color changes distinctively according to the location. In Northen, color is green and it has a red stripe. It has an olive-colored pattern on its neck, and the black spots on its yellow stomach. Going Southern, you can see its green color being faded. In Jeju, its body is olive-colored and white or olive color pattern is clear around the neck. Its fang is hidden on the back of its mouth.

Ecology : One of snakes in Korea can be found very well. They like the edge of the water. Meeting people, they run away at once, so we don’t have to have some fear. They hibernate in a gap of rock ar a pile of stones. They make a pair from September to October. Then they lay 10~30 eggs on bush or grass in the next year(from June to July). They like a frog, also live on a loach or fish in rice field or pond.

Where you can see this species at Dongbaekdongsan : It is often observed at a pond and around swampy land. Especially around Monmulkak(먼물깍). It is commonly observed in summer.

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Dybowskii’s brown frog (Rana dybowskii) 북방산개구리

by on Jun.01, 2010, under amphibian

Characteristics : Its body is 4~7cm long. It has irregular brown, deep brown or black spots on its back. It also has a black stripe around its eardrums, and spots on its nose. The distinct eardrums are usually round-shaped. Its body is thin and narrow, and protuberance is clear. Its nostrils lean to forward of its mouth and the side line is bended toward the eardrums. The size of eardrums is 2/3 or 3/4 of its eyes, and its web is well developed. A male is smaller than a female.

Ecology : When it lays eggs, you can see it in waterside but it lives in field or forest after laying eggs. It usually lays eggs on February to April but also on January in Jeju. It lays eggs in pond, puddle, riverside and valley.

Where you can see this species at Dongbaekdongsan : On egg-laying season, you can see adults which come to lay eggs and its eggs in the pond or marsh easily. And after that season, you can observe that it lives in a grazing land or forest.

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Japanese tree frog (Hyla japonica) (청개구리)

by on Jun.01, 2010, under amphibian

Characteristics : It is usually green on the back, and has deep green or dark brown irregular patterns in yellowish green background. A male has a big weeping pocket in the vicinity of pharynx but female doesn’t. The trunk is flat and slim. The size of an adult is about 2.5~4cm both in female and male. Suction cups are developed on toes.

Ecology : It lives in flat lands, shrub or on leaves except in breeding season. From April to July, it lays 400~800 eggs in pond, valley, pool and many places, and the eggs are divided to 20~30 in one place. The eggs are deep yellowish brown and the lower part of the eggs called vegetal pole is light colored.

Where you can see this species at Dongbaekdongsan : a pond, wetland or on the trees around wetland. You can easily find adults crying at a wetland around Monmulkak(먼물깍) especially in summer evening.

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