Necturus

Japanese: Necturus
Necturus

...In other words, the native species is in a larval or neotenic form, and when thyroid hormone is added to it, metamorphosis occurs. There are many species of salamanders and newts (caudelas) that have gills for life and exhibit a larval form (all from North America, such as the Texas ground newt Typhlomolge rathbuni , the mud puppy Necturus , and the amphiuma Amphiuma means , which has gills inside its body). These can also be interpreted as fixed neotenic forms. ...

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…つまり原産地のものは幼生形すなわちネオテニー形であり,これに甲状腺ホルモンを補給すると変態が起こる。サンショウウオおよびイモリの仲間(有尾両生類)には終生えらをもつなど幼生的な形態を示す種がいろいろある(いずれも北アメリカ産でテキサスホライモリTyphlomolge rathbuni,マッドパピーNecturus,えらを体内にもつアンヒューマAmphiuma means)。これらはネオテニー形が固定したものと解釈することもできる。…

※「Necturus」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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