Dirty animals - Osondobutsu

Japanese: 汚損動物 - おそんどうぶつ
Dirty animals - Osondobutsu

...These organisms include organisms from various groups, ranging from bacteria, fungi, diatoms, and seaweeds to invertebrates such as protozoa, sponges, coelenterates, cytozoans, annelids, tentacles, mollusks, and protochordata. Some of the sessile organisms are useful for fisheries, such as seaweed, oysters, and ascidians, but many are fouling animals that attach to artificial structures such as ship bottoms, water pipes, fishing gear, and aquaculture facilities, hindering the purpose and efficiency of their installation. Attached organisms on artificial structures in the water are originally from reefs and have migrated there, but as the number of structures increases, their habitats expand from structure to structure. ...

*Some of the terminology that refers to "fouling animals" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…このような生物には細菌,菌類,ケイ藻,海藻から原生動物,海綿動物,腔腸動物,曲形動物,環形動物,触手動物,軟体動物,原索動物などの無脊椎動物まで,いろいろな生物群に属するものが含まれている。付着生物にはノリ,カキ,マボヤなど水産上有用なものもあるが,多くは船底,導水管,漁具,養殖施設などの人工構造物に付着して,それらの設置目的や使用効率を阻害する汚損動物fouling animalである。水中の人工構造物上の付着生物は,元来は岩礁などに生息していたものが移住してきたものであるが,構造物が増えると構造物から構造物へと生息場所が拡大するようになる。…

※「汚損動物」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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