An Invasion Report of The New Zealand Mud Snail, Potamopyrgus antipodarum (Gray, 1843) in Turkish Freshwaters: Delice River and Kocabaş Stream

This study is combined the data from two different studies that carried outdifferent regions and time, presenting some information on the populationstructure (dominance, local distribution etc.) of Potamopyrgus antipodarum(Gray, 1843). According to our data, this species was found in the four differentlocalities in the Delice River with various population densities. However, only ofsmall population was found in the Kocabaş Stream. This species was the seconddominant species in the Delice River with 31.43 % after Physella acuta(Draparnaud, 1805) (46.88%). On the other hand, the species was not reachednoticeable aggregates in the Kocabaş Stream. In this paper, supporting factors thatpaving the way P. antipodarum invasion are discussed for the study area.