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为什么乌贼交配后会完全失去体力?

时间:2012-11-01 18:35:12  来源:  作者:

dumpling乌贼(如上图),交配是一件大事。交配的时间能长达3个小时,其中有大量的体力活动。交配后的乌贼就会非常精疲力竭,以至于游泳能力都暂时没有了,需要30分钟才能恢复过来。
It's worth pointing out, by the way, that mating halves the swimming endurance of both sexes — not just the males. Yeah... the researchers were surprised, too:
值得提出来的是,交配对双方游泳能力都有影响,而不仅仅是雄性才如此!对此,研究人员也感到惊讶。
"We expected males to be more strongly affected than females," writes Amanda Michelle Franklin, a zoologist at the University of Melbourne and first author on the study, "because males are more active during copulation. The males physically restrain the female, pump jets of water into her mantle and jet, change colour and ink more than females do." Females, on the other hand, appear "relatively quiescent, only occasionally jetting or visibly elongating the mantle. "
我们一般认为雄性会比雌性要消耗更多的体能——阿曼达米希尔富兰克林,墨尔本大学的动物学家——写道,“因为雄性在交配中会更主动。雄性会从身体上控制雌性,向其喷出一波波的水。而雌性呢,则表现地较为安静,只是在很少的时候喷射或者伸展她的大套膜。
And yet, the researchers note, "swimming endurance was clearly reduced by mating and the magnitude of this effect was similar for both sexes."
但是,研究人员说到,”很明显,游泳的忍耐力由于交配而减弱了,而且其影响的程度对于两性来说都是一样的。
The researchers hypothesize that the downside to squid feeling knackered after a round of sex is that it leaves them ill-equipped to handle basic functions important to their survival — things like predator-avoidance. How's that for a tradeoff?
研究人员猜测乌贼感到精疲力尽后带来的副作用是:它们失去了对生存很重要的基本功能——比如防御捕食者。有得必有失啊!
Check out the full study, free of charge, over at Biology Letters.
想要了解完整的研究,请关注《生物密码》,这是免费的。
 

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