Concealing coloration

Japanese: concealing coloration(英語表記)concealingcoloration
Concealing coloration

… The body color of animals is by no means meaningless, and is thought to have various functions. Body colors can be broadly divided into concealing coloration and signal coloration according to function. The former falls into the category of so-called protective coloration, and is a color thought to increase the survival value of an animal by making its presence less conspicuous. …

From [Camouflage]

…The body colors of green caterpillars and grasshoppers on green leaves, moths with complex patterns resting on tree trunks, nightjars with colors similar to tree nubs, grasshoppers and bird eggs with colors and patterns that mimic the pebbles in sand and riverbeds, mice that are almost invisible on the leaf litter in forests, and loaches and gobies that blend into the sand and mud at the bottom of the water are all typical examples of protective coloration. Such body colors are generally called cryptic coloration because they hide the presence of the animal in its environment. In the narrow sense, protective coloration often refers to a color or pattern that shows a concealing effect due to similarity of color or pattern with the environment, but there are several other forms of cryptic coloration. …

*Some of the terminology that refers to "concealing coloration" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

… 動物の体色は決して無意味なものではなく,さまざまな機能をもっていると考えられる。体色を機能によって大別すれば,隠蔽色concealing colorationと標識色signal colorationとになる。前者はいわゆる保護色の範疇(はんちゆう)に入るもので,その動物の存在を目だたなくすることによって,生存価を高めると考えられるような色である。…

【保護色】より

…緑色の葉の上の緑色の芋虫やキリギリス,木の幹にとまっている複雑な模様のガ,木のこぶに似た色のヨタカ,砂地や河原の小石に見まがう色や斑紋をもつバッタや鳥の卵,林の中の落葉層の上ではほとんど目につかないハツカネズミ類,水底の砂泥にまぎれてしまうドジョウやハゼの仲間などの体色は,いずれも保護色の典型である。 このような体色は,いわばその動物の存在を環境の中に隠してしまうものであるために,一般的には隠蔽色concealing coloration(またはcryptic coloration)と呼ばれる。狭義の保護色とは,環境との色彩ないしは模様の類似によって隠蔽効果を示すものを指す場合が多いが,隠蔽色にはこのほかにもいくつかの形式のものがある。…

※「concealing coloration」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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