Bonellia

Japanese: Bonellia
Bonellia

…When sex determination is influenced by the environment, the sex ratio is skewed. For example, the larvae of the marine Bonellia worm develop into females when alone, but when a female is present, one attaches to the proboscis and becomes male. The coral reef fish, the cleaner wrasse, lives in schools of one male, several females, and several immature fish, but when the males disappear, the dominant female changes sex and becomes a male. …

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…性の決定が環境に左右される場合は性比がかたよる。たとえば,海産のボネリムシBonelliaの幼生は単独では雌に発生するが,雌が存在すると吻(ふん)に付着して雄になる。サンゴ礁魚のホンソメワケベラは1匹の雄と数匹の雌と数匹の未成魚が群れを作っているが,雄がいなくなると優位の雌が性転換して雄になる。…

※「Bonellia」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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