Protogyny

Japanese: protogyny
Protogyny

...Black porgy and bivalve oysters once function as female or male, then function as male or female. When females mature first, it is called protogyny, and when males mature first, it is called protandry. Both are called adjacent hermaphroditism. In the case of the Japanese brown frog, the genetic male reproductive organs first differentiate as ovaries, which transform into testes during metamorphosis.

*Some terminology explanations that mention "protogyny" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…クロダイや二枚貝のカキは,一度雌ないし雄の機能をした後,雄ないし雌として機能する。雌性が先に成熟するものを雌性先熟protogyny,逆に雄が先なら雄性先熟protandryといい,どちらも隣接的雌雄同体現象という。また,エゾアカガエルは遺伝的な雄の生殖器官もまず卵巣として分化し,変態時に精巣へ転換する。…

※「protogyny」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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