تجزيه و تحليل تك متغيره و چندمتغيره تنوع پذيري صفات ريخت شناسي در بين جمعيت هاي كلمه در تالاب هاي گميشان ، آبي گل و آلماگل

Univariate and multivariate analysis of the morphological variability among Roach population (Rutilus rutilus caspicus) from Gomishan, Adji_Gol and Alma_Gol wetlands

A study was conducted to determine variation in morphologic characters of resident populations of the roach in Adji-Gol and Alma-Gol wetlands as well as migratory populations to Gomishan wetland. The morphologic characters including morphometric and meristic measurements were carried out and analyses were done by one way ANOVA and multivariate analysis. One way ANOVA showed significant differences in morphometric and meristic characters among the roach populations. There were differences among the populations in indices of mersistic characters including number of variables, relative frequency of variables and diversity index. In addition, the taxonomic distance index revealed that Adji-Gol and Alma-Gol populations were quite distinct from Gomishan populations. Factor analysis also showed that populations of Adji-Gol and Alma-Gol had completely separate morphologic characters. Scatter plot based on extracted factors as well as clustering revealed that there is an apparent distinction between populations. By discriminant analysis, it was found :iʹ?,t 73.4% of specimens could be classified into five different populations. In conclusion, variability was found to be higher in the morphologic characters than the meristic characters among the populations. Inter and intra population variations were higher in the Gomishan wetland specimens. Therefore, the results provided sufficient information of population separation of the roach, which could be used for management, conservation as well as exploitation.