Fatty acid composition of Artemia urmiana in five separated stations from the Urmia Lake Ramin Manaffar*1, Alireza Asem2, Amin Eimanifar3, Behrooz Atashbar1 1) Artemia and Aquatic Animals Research Institute, Urmia Uni, Urmia, Iran 2) Protectors of Urmia Lake National Park Society (NGO), Urmia, Iran 3) Iranian Artemia Research Center (I.A.R.C.), Urmia, Iran Summary: Physico-chemical parameters are very important factors to determine the characteristics of Artemia populations in different locations. So, widely competitive studies were being done about characterization of Artemia in diverse geographical habitats. In resent study, percentages of fatty acids of A. urmiana had been analyzed in separated stations from the Urmia Lake. With regard to results, percentages of fatty acids have variation between studied stations. By the way, Pca analyses shows that there is no geographical arrangement between disserted sites. This obtained can be led us that ecological parameters are main factors to conclude Artemia characteristics and cause ecological speciation in this genus. Home