European Journal of Zoological Research
Abstract
Author(s): Sara Mansouri, Maryam Fallahi Capoorchali and Maryam Shapoori
This research was done to assess the density of Cladocera an Anzali Swamp and Compare it with its density in
estuarine regions and the Caspian Sea. Therefore, sampling was done during 7 months with 45-day interval from
March, to September, 2011 at 5 stations including 3 stations in Anzali wetland, 1 station in estuary and 1 station in
the Caspian Sea using 30-micron Planktonic nets. According to the achieved data, only 6 genera were found in this
branch whose most density was at west swamp entry station with 41 numbers per liter. The maximum Cladocera
density was seen during April with 22 numbers per liter. The results of such study showed that compared with three
regions of Anzali Swamp, estuary and the Caspian Sea, the density of Cladocera was more in Anzali Swamp, then in
estuary and it had the least density in the Caspian Sea. The statistical Analysis and one way variance results showed
that the average Cladocera zooplanktonic density had a significant difference at various stations as well as different
months. Also, there was a relation between physio- chemical factors and Cladocera density. Such relation was
straight between pH and water temperature with Cladocera while it was inverted between transparencies and
electrical conductive with their density.
