GENETIC DIVERSITY IN HEADWATER-SPECIFIC MAYFLIES BASED ON THE MITOCHONDRIAL 16S RRNA GENE SEQUENCES

摘要

Headwaters are unique components of catchments as they usually support a taxonomically and ecologically unique fauna. This paper, focuses on an endemic Japanese dipteromimid mayflies, which have possibly very limited dispersal ability, and are restricted to headwaters. Its ecological relationships (its dispersal ability) and genetic variation were discussed and compared with some other mayfly species living in other water systems. Dipteromimid mayflies showed greater interpopulation genetic distancesthan those of any other of the mayfly species examined.