Length-weight relationship and condition factor of seven fish species from Shahrbijar River, Southern Caspian Sea basin, Iran
Description:- Department of Fisheries, Faculty of Natural Resources, University of Guilan. Box 1144, Some-e Sara, Guilan, Iran.
- Department of Fisheries, Faculty of Natural Resources, University of Tehran, Box 4111, Karaj, Iran.
- Department of Natural Resources (Fisheries Division), Isfahan University of Technology, Isfahan, Iran.
-Department of Fisheries, Faculty of Natural Resources, Islamic Azad University, Science and Research Branch, Tehran.
* Corresponding author’s Email: asadi.shil@gmail.com
Text:Abstract
Length-weight relationship and condition factor were estimated in seven fish species, includingBarbus cyri,Capoeta gracilis,Alburnoides eichwaldii,Pseudorasbora parva,Ponticolacyrius,Cobitis keyvaniandAcanthalburnus microlepisfrom Shahrbijar River, Guilan Province, Iran. A total of 416 specimens ranging from 18 to 135 mm in total length and from 0.06 to 19.25 g in total weight were collected. Based on the results, growth coefficient values “b” ranged from 2.615 (inB. cyri) through 3.001 (inA. microlepis). All length-weight relationships were significant (p<0.05), with r2 higher than 0.819. The five species viz.C. gracilis,P.parva,C.keyvani,P.cyrius, and B. cyri showed allometric (b<3<b) while two species viz.A. microlepisand A. eichwaldiishowed isometric (b=3) growth patterns. Condition factor ranged from 0.57 (inC.keyvani) through 1.11 (inP.cyrius). All linear regressions were highly significant (p<0.05). The present study provides the first baseline information on the length - weight relationships of the seven fish species from Shahrbijar River which may be useful for further fisheries management of these species.
Keywords: Shahrbijar River, Freshwater fishes, Morphometrics, Allometry, Caspian Sea basin.
Author:Asadi H.*; Sattari M.1; Motalebi Y.; Zamani-Faradonbeh M.;
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