V2EX sea squirts

Sea Squirts

Definition / 定义

sea squirts(海鞘;海樽)指一类生活在海里的滤食性海洋无脊椎动物,常固着在岩石、码头或船底等表面;受刺激时会从体内喷出水,因此得名。(生物分类上多属于被囊动物/ 海鞘纲,英文也常叫 tunicates / ascidians。)

Pronunciation / 发音

/si skwts/

Examples / 例句

Sea squirts often attach themselves to rocks and docks.
海鞘常常附着在岩石和码头上。

Because sea squirts filter seawater for food, they can be indicators of local water conditions.
由于海鞘通过过滤海水获取食物,它们可能成为当地水质状况的指示物种。

Etymology / 词源

该词由 sea(海)+ squirt(喷射)组成:海鞘的入水孔与出水孔会将水吸入并排出,受到挤压或刺激时看起来像“喷水”。在较正式的语境中,常用拉丁来源的学名相关词:ascidian(源自希腊语,意为“皮囊/小袋”)与 tunicate(源自拉丁语,指“外被/被囊”)。

Related Words / 相关词

Literary Works / 文学作品

  • Your Inner Fish(Neil Shubin):提到包括海鞘在内的早期脊索动物相关内容(常以 tunicates/sea squirts 出现)。
  • The Ancestor’s Tale(Richard Dawkins):在讨论动物演化分支时提及被囊动物(tunicates/sea squirts)。
  • The Voyage of the Beagle(Charles Darwin):在自然观察与海洋生物描写中可见对海鞘类(常以 ascidians)的提及。
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