...In the mosquitofish, the male's anal fin has a spear-shaped organ (gonopodium) that guides sperm. In some species of the same species, this is a hollow tube, and in some species, it has a complex mating organ (priapium) under the throat. Amphibians do not normally mate in the strict sense, so they have no mating organs, but the male of the North American frog Ascaphus has a mating organ that always protrudes from the cloaca like a tail, and internal fertilization occurs through mating. ... *Some of the terminology explanations that mention "priapium" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…トウゴロウイワシ類のカダヤシなどでは雄のしりびれの鰭条が精子を導く槍状の器官(gonopodium)になっている。同じ仲間にはこれが中空の管になっているものや,のどの下に複雑な交尾器官(priapium)をもっている種類もある。 両生類はふつう厳密な意味での交尾を行わないので交尾器官をもたないが,北アメリカ産のカエルの1種アスカフスAscaphusの雄は総排出腔から尾のように常時突出した交尾器官をもち,交尾によって体内受精を行う。… ※「priapium」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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