Study on population structure of Kutum (Rutilus frisii kutum Kamenskii, 1901) in southern of Caspian Sea using Truss network system

Introdouction: In this study we investigated morphological structure of cyprinid fish, kutum (Rutilus frisii kutum Kamenskii, 1901) in Caspian Sea using truss network system. Samples were collected from two main fishing areas of this species in the western (Bandare-Astara) and the eastern (Bandare-Kiyashahr) shore of Guilan province. Truss distance as well as eye diameter, interorbital, total length, fork length width of 23 samples were measured. Univariate analysis (One-way ANOVA) of 14 characteristics among the samples showed significant differences with varying degrees that showed relatively high phenotypic diversity in the kutum, (Rutilus frisii kutum Kamenskii, 1901). In principle, any measured distances between landmarks of a form may serve as characters for morphometric analyses. We described methodologicaly a geometric protocol for a cyprinid fish species morphological character measurments, the truss network system which enforces systematic coverage of the form and which exhaustively and redundantly archives the landmark configuration.