V2EX ectotherm

Ectotherm

Definition 释义

外温动物:体温主要由外界环境温度决定、依靠外部热源(如阳光、温水、地表热量)来调节体温的动物。常见例子包括多数鱼类、两栖类、爬行动物以及许多无脊椎动物。(口语里常被称为 cold-blooded “冷血的”,但两者并非完全等同。)

Pronunciation 发音(IPA)

/ktoθrm/

Examples 例句

Many reptiles are ectotherms, so they bask in the sun to warm up.
许多爬行动物是外温动物,所以它们会晒太阳来升温。

As an ectotherm, the lizard’s activity level depends strongly on the temperature of its surroundings.
作为外温动物,这只蜥蜴的活动水平会强烈受周围环境温度影响。

Etymology 词源

来自希腊语词根:ecto- 表示“外部、外面”,therm 来自 thermē(热)。字面意思是“外部的热”,强调这类动物主要依赖外界热量来维持或调节体温。

Related Words 相关词汇

Literary Works 文学作品/著作中的用例

  • Campbell Biology(《坎贝尔生物学》)在动物能量代谢与体温调节章节中频繁使用 ectotherm
  • Principles of Animal Physiology(Hill, Wyse & Anderson,《动物生理学原理》)用于对比 ectothermsendotherms 的生理差异。
  • Animal Physiology(Schmidt-Nielsen,《动物生理学》)在温度适应、代谢率与环境关系的讨论中出现。
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