Faunistic survey of Ephemeroptera in Hablehrood River

Mayflies belonging to the order of Ephemeroptera compose of the most diverse and common inhabitants of aqua systems and are considered as biological and quality index. In this study, biodiversity of Ephemeroptera in Hablehrood River, east of Tehran Province, from 4 sampling points (Simindasht, Mazdaran, Khomedeh and Namrood) was studied. Samples collected weekly through June-September 2016. Samples collected manually by simple forceps from under the bottom rocks and transferred in Ethanol 70% to laboratory for further identification. Total frequencies of the identified genera were compared among different months and sampling points. Five different genera (Acentrella, Baetis, Centroptillum, Cloedes, Rhitrogena) belonging to two families, Baetidae and Heptagenidae, were collected from Hablehrood River, which Acentrella was the most frequent genus (49.7%). Results showed that the most frequency percentage of the collected samples belonged to Khomedeh station through both June and September. Mean number of collected samples of each genus showed no significant difference among different sampling months and sampling points. A part of Hableh Rud river that passes through Tehran province, has a valuable diversity of Ephemeroptera and it is needed to provide optimal habitat for its macrobenthose regarding rural and agricultural pollutions.