بررسي اپي فيتها و چراكنندگان موجود در كشت و پرورش جلبك قرمز در حوضچه هاي فايبرگلاس

Epiphites and Grazer in Gracilaria corticata cultivation in fiber glass tanks

In order to determination of epiphytes and grazers in Gracicaria corticata cultivation in fiber glass tanks three treatment was chosen (500,1000 and 2000 gr/m2) and this survey was done at during Winter 2001 to Autumn 2002.In study maximum and minimum of epiphytes had showed in Winter, Summer and Spring and Autumn respectively. Navicula, Nitzschia, Thalassiosira, Enteromoropha and Ulva are common epiphytes that observed in Winter and Oscillatoria and Peridinium were other groups which observed in Summer density and diversity of epiphytes in Summer and Autumn was showed groups of Navicula and Nitzschia (Spring) and Chatoceros (Autumn). In study some grazer so Isopoda, Amphipoda, Small crabs, Nemertin and Nereis recognaized showed those density was high in Winter and Summer. In survey density higher of Gracilaria corticata have most epiphytes than others.