N any small marine gastropod mollusc of the group or order Pteropoda, in which the foot is expanded into two winglike lobes for swimming and the shell is absent or thin-walled 翼足目软体动物 (Also called sea butterfly)
In the first year of their life, pink salmon eat more pteropods than anything else.
这也是细鳞大马哈鱼在出生后一年内吃得最多的东西。
Dr Riebesell is particularly interested in the ecosystem role of pteropods, also called sea butterflies.
里贝塞博士特别感兴趣的是生态系统中翼足类的作用，它也被称作海底蝴蝶。
But though the mesocosms may shed light on the fate of the pteropods, the outlook for the salmon will remain conjectural.
尽管中型实验生态系可以清楚地阐明翼足类动物的命运，但粉鲑的命运仍然是我们的猜测。
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