Study effect of the Taleghan dam on length-weight relationship of Kura barbel (Barbus lacerta, Heckel 1834)

Development of human communities such as dam construction effects the biologicalcharacteristics of aquatics inducing fishes. Hence, this study was conducted tocompare length-weight relationship of Kura barbel (Barbus lacerta, Heckel 1834)fragmented by the Taleghan Dam. In total 275 specimens of the Kura barbel werecollected from the up-and downstream of Taleghan dam using electrofishing. Theresults showed that total length (TL) and weight (W) range 209.63-30.9 mm (94.63± 8.17 SE) and 0.14-48.61 g. (28.35±7.65 SE), respectively and the length-weightrelationship was W=0.00001L 2.8592 (R2 P=0.8627) in whole specimens. Total length andW were 53.28-175.75 mm (126.27 ± 24.81 SE) and 1.52-36.78 g. (19.94 ± 8.387 SE)with length-weight relationship of w=0.00003L 2.768 (R2 =0/9681) in upstreampopulation and 53.287-175.756 mm (126.279 ± 24.811 SE) and TL and W were30.96-209.64 mm (90.96 ± 26.41 SE) and 10.14-48.61 g (6.75±6.16 SE) with lengthweightrelationship of W=0/00002L 2.7987 (R 2 =0.8497) for downstream population,respectively. Result also revealed a little differences between up-and downstreampopulations but not significant (P> 0.05). Based on the b coefficient, allometricgrowth pattern of whole specimens was negative displaying a better growth ofdownstream population.

کلیدواژه ها:

Kura barbel ، Length-weight ، Growth ، Allometric