Elako - Elako

Japanese: エラコ - えらこ
Elako - Elako

It is a marine animal belonging to the order Sedentary, class Polychaeta, and family Scutellaria. It has local names such as Kawakamuri and Mate. It is distributed in northern Japan, where many tubes grow in clusters between the rocks on the coast. The tubes are made of a thin, tough membrane, with fine sand grains on the surface. The body of the insect is about 10 centimeters long, and on its head there is a tuft of gills consisting of 45 to 50 gill filaments, which protrude from the entrance of the tube and open like a flower to breathe and catch food. Each gill filament has 5 to 6 eye spots lined up in a row. The body is well muscular, and is used as fishing bait. Some people eat it raw along the coast of Iwate Prefecture, and it is also sold as salted fish. Near the entrance of the eel's tube, there are many colonies of Ningyohydra, a coelenterate with a body length of about 1 millimeter, and if you touch it, it will swell red.

[Minoru Imajima]

Main species of worms (1) [specimen illustrations]
©Tomita Hyakushu ">

Main species of worms (1) [specimen illustrations]


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

環形動物門多毛綱定在目ケヤリ科に属する海産動物。カワカムリ、マテなどの地方名がある。北日本に分布し、海岸の岩の間に多数の管が一かたまりになって群生する。管は薄くてじょうぶな膜で、表面に細かい砂粒をつけている。虫体の体長は10センチメートル内外で、頭部には45~50本の鰓糸(さいし)からなる房状の鰓冠(さいかん)があり、これを管の入口から出して花のように開き、呼吸したり餌(えさ)をとっている。おのおのの鰓糸には5~6個の眼点が1列に並んでいる。体は筋肉質がよく発達しており、釣りの餌に用いられる。また、岩手県の沿岸ではなまのまま食べる人があり、また塩辛が市販されている。エラコの管の入口付近には、体長1ミリメートルほどの腔腸(こうちょう)動物のニンギョウヒドラが多数群生しており、これに触れると赤くはれる。

[今島 実]

ゴカイ類のおもな種類(1)〔標本画〕
©冨田百秋">

ゴカイ類のおもな種類(1)〔標本画〕


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