copepod

" Water flees fleas" are not insects but copepods, a crustation crustacean like lubster lobsters and crubs crabs but extremely small.

水蚤不昆虫而桡脚，像龙虾或螃蟹那样有甲壳，但非常小。

3.Food, temperature and predation pressure directly act on the value of venturous revenue and are major environmental factors affecting DVM of the copepod.

3．食、温度和捕食压力直接影响风险收益值大小，影响桡足垂直迁移主要环境因子。