Study of Cladocera invertebrates diversity in Al-Shamyia river – Iraq

Abstract

The monthly variation of cladocerans density was studied in four selected stations in Al-Shamyia river for the period from March 2012 till February 2013. In the present study 33 taxa of cladocera were identified, the genera Alona and Chydorus were represented by the highest number of species (10,4 respectively). Maximum population density recorded in station 1, it reach 9375ind./m3 in April. The results of relative abundance index showed that the species Alona rectangula, Bosmina longirostris and Simocephalus vetulus were showed highest abundant in Al-Shamyia river water. The Shanon – Weiner diversity index recorded values varied between 0 – 2.41 bit/ind.