تنوع ريختي ميان جمعيت ماهي سياه كولي (Vimba vimba persa) در حوزه جنوبي درياي خزر

Morphological Diversity among the Vimba vimba persa Population Along The Southern Region of the Caspian Sea

In this study (2007) , 170 samples of Vimba vimba persa were caught from the coast of Tonekabon, Astara and Bandartorkman in the autumn 2008. In this research, 22 morphological and 6 numeral characteristics were studied. Morphological characteristics were standardized before statistical analysis to reduce the error of the allometric growth. In morphological characteristics , 4 factors were indicators of 74% characteristics diversity and in numeral characteristics 3 factors were indicators of 65% characteristics diversity between people of three populations. The method of analyzing to main factors showed that migratory population of Vimba vimba persa to three ecosystem were not completely distinctive but possibly are from different populations which according to different ecological conditions, annually migrate to these areas. In this study according to differences in the size of samples from different areas, morphological characteristics were almost the best characteristics to show the differences between three populations.