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Biometry of Chub (Squalius namak Khaefi et al., 2016) in rivers of Namak Basin

Document Type : Article

Authors

1 Associate Professor, Department of Fisheries, Faculty of Natural Resources, Isfahan University of Technology, Iran

2 M.Sc. Student in Aquatic Ecology, Department of Fisheries, Faculty of Natural Resources, Isfahan University of Technology, Iran

3 Assistant Professor, Department of Fisheries, Faculty of Natural Resources, Isfahan University of Technology, Iran

Abstract

Abstract
In order to evaluate the biometry of chub (Squalius namak, Khaefi et al., 2016) populations in Khaznagh, Ghinercheh, Gharechae, Jajrud and Ghomrud rivers of Lake Namak Basin, 129 specimens were captured by a seine nets in 2010-2011. After anesthetizing in 1% clove oil solution and fixing in 10% neutralized formalin, specimens were transferred to the laboratory for further studies. Some 14 meristic characters were counted under a stereomicroscope. To extract data for morphometric characteristics, 19 distances were measured on images in ImageJ software. To reduce the effects of allometric growth, morphometric data were standardized. To analyze the differences among the populations, Kolmogorov-Smirnov, Kruskal-Wallis, ANOVA, Duncan test, PCA, CVA and Cluster analyses were used. The morphometric characteristics separated Gharachai population from Khaznagh and Qomrud in PCA and CVA Analyses. But meristics were overlapping with each other in the studied populations, and there was no significant differences among them. The result showed that some morphometric characteristics are well able to distinguish some populations of S. namak.

Keywords

References
 
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Experimental animal Biology
Volume 7, Issue 1
September 2018
Pages 107-118
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