These ecosystems are home to minute water fleas known as Daphnia as well as crayfish and Japanese rice fish, called medaka.

这些生态系统是被称为水蚤的微小水蚤、小龙虾和日本稻鱼的家园。

Mr Yao focused on medaka, paper-clip-size fish that live in shallow water and attach their eggs to aquatic plants.

姚先生主要研究的是青鳉鱼，这种鱼只有回形针大小，生活在浅水中，将卵产在水生植物上。

The medaka that were in the mesocosms treated with imidacloprid were all, absolutely all 100 percent of the fish, were contaminated with protozoan parasites.

在接受吡虫啉处理的中系中，所有的鱼都被原生动物寄生虫污染了。

Given that a heron's average flight-speed is around 39kph (with top speeds of 96kph), the hardiest medaka eggs could travel quite a distance.

鉴于苍鹭的平均飞行速度约为 39 公里/小时（最高速度为 96 公里/小时），最坚强的青鳉卵可以飞行相当长的距离。

When the lab-reared medaka laid their eggs on strips of vegetation, the researchers took the plants out of the water for between zero and 24 hours—at conditions favourable to the unhatched eggs—before returning them.

当实验室饲养的青鳉鱼将卵产在植物带上时，研究人员将植物从水中取出， 放置 0 到 24 小时（在有利于未孵化卵的条件下）， 然后再将它们放回水中。

In a new paper in Science of Nature, Mr Yao and his colleagues report that the medaka eggs can successfully hatch after enduring up to 18 hours out of the water attached to a plant leaf.

姚先生和他的同事在《自然科学》杂志的一篇新论文中报告说，青鳉卵离开水并附着在植物叶子上长达 18 小时后可以成功孵化。