...The muscles where the arms attach to the plate are well developed, so some species use their arms to move around or swing their arms around to gather and eat plankton (Armstrong's brittle star). Others have complex arms that branch out multiple times (Okinoteru-mozuru). They are dioecious. ... From 【Male Crane】...A general term for echinoderms belonging to the Gorgonocephalidae family of the Ophiopods. The arms that arise from an almost pentagonal disk branch out from the base, then branch out 10 to 20 times, becoming more complex and gradually thinner like vines. The shape of these arms gave them the name "hand-shaped vines and sea vines." The net-like arms, which are made of vines, are useful for catching and eating zooplankton. Large ones can reach an overall diameter of 40 to 50 cm. *Some of the terminology that refers to "Okinotedzurumozuru" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…腕が盤に付着する部分の筋肉がよく発達しているので,腕を使って移動したり,腕を振り回してプランクトンを集めて食べるものもある(ウデフリクモヒトデ)。また腕の先が何回も枝分れして複雑になっているものもある(オキノテヅルモズル)。雌雄異体。… 【テヅルモヅル】より…クモヒトデ綱テヅルモヅル科Gorgonocephalidaeに属する棘皮(きよくひ)動物の総称。ほぼ五角形の盤から生じた腕は,基部から分岐し,さらに10~20回も枝分れして複雑になり,だんだん細くなってつるのようになる。このような腕の形態から〈手蔓藻蔓〉という名がつけられた。つるがからんで網のようになった腕は動物プランクトンをとらえて食べるのに役だっている。大型なものは全体の直径が40~50cmにもなる。… ※「オキノテヅルモズル」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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