Karehiba - Karehiba

Japanese: カレヒバ - かれひば
Karehiba - Karehiba

A marine animal belonging to the order Coelenterata, class Hydrozoa. It forms colonies that are dark brown and reach a height of about 8 cm, and are named after their shape, which resembles a cypress twig. The trunk has many alternate branches that spread out on one plane. Hydropods that contain individual worms are lined up on the trunk and branches, and the mouth edges of these hydropods are smooth and have a single lid. In addition, reproductive pods that contain gametes are formed in roughly two vertical rows on one side of the trunk, which are spindle-shaped with small, round mouths and about five prominent longitudinal ribs on the walls. They are common in shallow waters in northern Honshu and various parts of Hokkaido, and can be found attached to rocks and other objects.

[Mayumi Yamada]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

腔腸(こうちょう)動物門ヒドロ虫綱有鞘(ゆうしょう)目に属する海産動物。群体を形成し、その群体は濃褐色で高さ8センチメートルほどに達し、その形がヒノキの小枝に似ているのでこの名がある。幹には多くの枝が互生し、それらは一平面上に広がっている。幹と枝上には個虫を包むヒドロ莢(きょう)が並んでおり、そのヒドロ莢の口縁は平滑で1個の蓋(ふた)がある。また幹の片面上には生殖体を包む生殖莢がほぼ2縦列をなして生じ、これらは紡錘形で、口は丸くて小さく、壁には5本ほどの顕著な縦肋(じゅうろく)がみられる。本州北部と北海道各地の浅海に普通で、岩などに付着してみられる。

[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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>>:  Karehaga (Leaf Moth) - Gastropacha orientalis

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