filoplume

Japanese: filoplume
filoplume

…These feathers are also located under the main feathers and help to retain body heat. Filoplume are hair-like feathers, and it is thought that the feather lobes have degenerated, leaving only the modified shaft. The down-like feathers seen after plucking chicken feathers are filoplume, and the bristles of mustaches and other feathers are also said to be a type of filoplume.

*Some of the terminology that mentions "filoplume" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…この羽毛も正羽の下にあって,体温を保持する働きをする。糸状羽filoplumeは毛のような羽毛で,羽弁は退化し,羽軸のみ変形して残ったと考えられる。ニワトリの羽をむしったあとに見える産毛のような羽毛がこれで,また口ひげなどの剛毛も糸状羽の一種といわれる。…

※「filoplume」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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