Sayede Amene Hossaini; Mohammad Forouhar Vajargah; Mohammad Javad Vesaghi
Abstract
Morphometric and meristic traits typically are used to identify the stocks. The aim of this study was to identify the biological status of Aphanius vladykovi in four regions: Dehcheshme River, Shalamzar Lake, Madar-o-Dokhtar Spring and Chehelgazi Spring. 20 samples in each region were used to biological ...
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Morphometric and meristic traits typically are used to identify the stocks. The aim of this study was to identify the biological status of Aphanius vladykovi in four regions: Dehcheshme River, Shalamzar Lake, Madar-o-Dokhtar Spring and Chehelgazi Spring. 20 samples in each region were used to biological assess and 23 morphological and 8 meristic characters were examined. The final data were normalized and analyzed with Excel and SAS software version 9.1 with Duncan analysis of variance and to determine the length-weight relationship was used W=aLb regression equation. Regression coefficients growth pattern, with Pauli applicable method showed fish growth in the Shalamzar region was allometric and in other regions was isometric. Also variance analysis of main components revealed that among the areas were observed significantly different at 5% level at characters of: the minimum height of the body, distance behind the dorsal fin, ventral and pectoral fin spacing, the base of the pectoral and ventral fins, diameter of the gill cover, distance from tip of snout to ventral fin, body weight, number of pectoral, anal and caudal fin rays, number of lateral line scales and the number of gill raker and filaments, that suggesting the possible impact of these features in distinguish the populations of this species.
