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:: دوره 11، شماره 1 - ( 1390 ) ::
جلد 11 شماره 1 صفحات 47-37 برگشت به فهرست نسخه ها
Growth and mortality of brown trout, Salmo trutta fario in Lar dam, Iran
چکیده:   (13349 مشاهده)

 

  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.

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نوع مطالعه: پژوهشي | موضوع مقاله: Stock assessment
دریافت: 1390/12/27 | پذیرش: 1394/6/22 | انتشار: 1394/6/22
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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-fa.html

Growth and mortality of brown trout, Salmo trutta fario in Lar dam, Iran. مجله علوم شیلاتی ایران. 1390; 11 (1) :47-37

URL: http://jifro.ir/article-1-441-fa.html



دوره 11، شماره 1 - ( 1390 ) برگشت به فهرست نسخه ها
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
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