Growth and mortality of brown trout, Salmo trutta fario in Lar dam, Iran
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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| Main Authors: | , , , , , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
2012
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| Subjects: | Biology, Fisheries, Salmo trutta fario, growth parameters, exploitation rate, Lar Dam, Iran, |
| Online Access: | http://hdl.handle.net/1834/37260 |
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