This jellyfish belongs to the phylum Coelenterata, class Scyphomedusa, order Cubic Jellyfish, family Acanthomedusae. The umbrella is almost cubic and lantern-shaped. It is about 3-3.5 cm high and 2.5-3 cm wide, with four pale pink tentacles, the base of which forms a leaf-like foot made of agar. This species is generally tropical, but can be found in Japan in the summer along the coasts from the west coast of Hokkaido to Okinawa. The nematocyst venom is quite strong and can be quite painful to touch. At night, when fishermen use lights to catch shrimp, these jellyfish gather around the lights, which can sometimes interfere with shrimp fishing. In Otaru, Hokkaido, it is sometimes called Takoteren, and in other parts of Honshu, it is sometimes called Ira. [Mayumi Yamada] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
腔腸(こうちょう)動物門ハチクラゲ綱立方(りっぽう)クラゲ目アンドンクラゲ科に属するクラゲ。傘はほぼ立方形で行灯形。傘高3~3.5センチメートル、幅2.5~3センチメートルほどで、淡紅色の4本の触手があり、その基部は寒天質の葉状の足を形成する。この種は一般に熱帯性であるが、日本でも北海道西岸から沖縄付近まで、各地の沿岸で夏季にみられる。刺胞毒(しほうどく)は相当強く、これに触れるとかなり痛む。夜間、漁師が灯火を使ってエビなどを捕獲するときに、このクラゲも灯火に集まってくるので、エビ漁の妨げになることがあるという。北海道の小樽(おたる)ではタコテレレン、本州各地ではイラとよばれることがある。 [山田真弓] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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