蜉蝣稚虫形态多样性及其适应性变化

Morphological Diversity of Mayfly Nymphs and its Adaptive Derivation

根据蜉蝣稚虫的生活环境 ,可简单地将其分为静水区种类和流水区种类。静水区种类可生活于水体中、底质表面和底质中三种不同的小栖境 ,流水区种类可生活于水体中、底质表面和底质缝隙间三类小栖境。形态各异的不同种类蜉蝣稚虫生活在不同的小环境 ,表明种类演化和形态变化与环境有密切关系。

Mayfly nymphs can be divided into lentic and lotic groups.Lentic nymphs can live freely in the water,amid the slit and bury themselves in the stream bed.Lotic nymphs can be found in the water current,adhering to the substrate,inhabiting aquatic vegetation or hiding under stones.Different kinds of mayfly nymphs with diverse morphology prefer different aquatic habitats.This indicates that there is a close relationship between species divergence,nymphal morphology derivation and microhabitat.