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IJFS 2012, 11 Back to browse issues page
Growth and mortality of brown trout, Salmo trutta fario in Lar dam, Iran
H. Fazli * , H. Azari , M. Moghim , D. Kor , E. Nabavi Jelodar , H. Taleshian
, hn_fazli@yahoo.com
Abstract:   (11598 Views)

 

  The length-weight relationship, age, growth parameters, sex ratio, mortality and exploitation rate of Salmo trutta fario were determined in Lar dam. The sex ratio (male: female) was 1:1.84 which differed significantly from the expected 1:1. The length-weight regression was (females) and (males) indicating a negative allometric growth for both sexes. Growth parameters were estimated as L = 45.0 cm, K = 0.27 yr-1, t0 = -0.23 yr. The instantaneous coefficients of natural, total and fishing mortality were estimated as 0.40 yr-1, 0.75 yr-1 and 0.35 yr-1. The results showed that S. trutta fario is moderately a rapidly-growing species in Lar dam. The exploitation rate was 0.47. Therefore, the population appeared to be in good condition in 2004.

Keywords: Salmo trutta fario, growth parameters, exploitation rate, Lar Dam
Full-Text [PDF 509 kb]   (2920 Downloads)    
Type of Study: Orginal research papers | Subject: Stock assessment
Received: 2012/03/17 | Accepted: 2015/09/13 | Published: 2015/09/13
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Fazli H, Azari H, Moghim M, Kor D, Nabavi Jelodar E, Taleshian H. Growth and mortality of brown trout, Salmo trutta fario in Lar dam, Iran. IJFS. 2012; 11 (1) :47-37
URL: http://jifro.ir/article-1-441-en.html


Volume 11, Issue 1 (1-2012) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
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