TY - JOUR ID - 3207 TI - Age determination and growth rate of Capoeta trutta in Azad Dam Lake, Kurdistan Province, Iran JO - Caspian Journal of Environmental Sciences JA - CJES LA - en SN - 1735-3033 AU - Fazli, H AU - Daryanabard, G AU - Naderi Jelodar, M AU - Mirzaei, R AU - Hosseinpour, H AU - Taleshian, H. AU - Bagherzadeh, F AD - Caspian Sea Ecology Research Center (CSERC), Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research, Education and Extension Organization (AREEO), Sari, Iran AD - Department of Fisheries, Jihad-Agriculture of Kurdistan Organization, Sanadaj, Iran Y1 - 2018 PY - 2018 VL - 16 IS - 4 SP - 395 EP - 404 KW - Growth parameters KW - Condition factor KW - Capoeta trutta KW - Azad Dam KW - Iran DO - 10.22124/cjes.2018.3207 N2 - A total of 148 specimens of Capoeta trutta caught from Azad Dam Lake, Kurdistan Province, northwest of Iran were examined during 2015-2016 for assessing growth parameters. The total length (TL) and weight (W) of C. trutta ranged from 4.0 to 29.0 cm and 0.9 to 274.0 g,  average (± SD)  = 19.3 (± 4.0) cm and 80.3 (± 44.7) g, respectively. The length-weight regression was W = 0.0121 × TL2.9317 indicating isometric growth. The sex ratio (M:F) was 1:0.33, differed significantly from the expected 1:1 (P < 0.001). The von Bertalanffy growth parameters were estimated as L∞ = 29.6 mm, K = 0.33 yr-1, t0 = -0.57 yr. The instantaneous coefficient of natural mortality was estimated as 0.58 yr-1. The averaged condition factor (KF) was 1.00 ± 0.11, by significantly differences among seasons (P < 0.001). In the present study, the relative condition factor (Kn) of C. trutta were close to 1 suggesting the well-being condition of the fish in Azad Dam region. UR - https://cjes.guilan.ac.ir/article_3207.html L1 - https://cjes.guilan.ac.ir/article_3207_54f56a073ca49a36ec082d8fa81b14f0.pdf ER -