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Nature:瑞士学者揭示博比特虫抗猎食行为

摘要 : 2016年9月12日,国际学术权威刊物自然出版集团旗下子刊《Scientific Reports》杂志在线发表了瑞士巴塞尔大学Daniel Haag-Wackernagel研究员的一篇研究论文,研究观测到某些种类的鱼会迫使这种像蠕虫一样的威胁物撤退到沙子中。

2016年9月12日,国际学术权威刊物自然出版集团旗下子刊《Scientific Reports》杂志在线发表了瑞士巴塞尔大学Daniel Haag-Wackernagel研究员的一篇研究论文,研究观测到某些种类的鱼会迫使这种像蠕虫一样的威胁物撤退到沙子中。

博比特虫是一种可怕的“伏击”捕食者。它会将自己埋在太平洋铺满沙子的海底,并且利用像蠕虫一样的触角引诱猎物。如果有鱼游动到非常靠近博比特虫的地方,它会被后者的咽腔抓住并被拖进其洞穴中。

科学家如今相似眶棘鲈会像鸟群一样围攻捕食者——博比特虫的隐藏地,并且从嘴中喷射水流,从而迫使后者躲避到洞穴的更深处。他们表示,这种行为表明,很多鱼类可能比此前认为的更加聪明。

原文链接:

Novel mobbing strategies of a fish population against a sessile annelid predator

原文摘要:

When searching for food, foraging fishes expose themselves to hidden predators. The strategies that maximize the survival of foraging fishes are not well understood. Here, we describe a novel type of mobbing behaviour displayed by foraging Scolopsis affinis. The fish direct sharp water jets towards the hidden sessile annelid predator Eunice aphroditois (Bobbit worm). We recognized two different behavioural roles for mobbers (i.e., initiator and subsequent participants). The first individual to exhibit behaviour indicating the discovery of the Bobbit directed, absolutely and per time unit, more water jets than the subsequent individuals that joined the mobbing. We found evidence that the mobbing impacted the behaviour of the Bobbit, e.g., by inducing retraction. S. affinis individuals either mob alone or form mobbing groups. We speculate that this behaviour may provide social benefits for its conspecifics by securing foraging territories for S. affinis. Our results reveal a sophisticated and complex behavioural strategy to protect against a hidden predator.

来源: Scientific Reports 浏览次数:0

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