Age and growth of Alburnus mossulensis Heckel, ۱۸۴۳ in Azad Dam Reservoir and Komasi River in Kordestan Province, Iran

سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 219

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شناسه ملی سند علمی:

JR_JIFRO-18-4_007

تاریخ نمایه سازی: 27 بهمن 1400

چکیده مقاله:

The aim of the present study was to estimate the population parameters including length-weight relationship (LWR), condition factor (KF), relation condition factor (Kn), age, growth and mortality of Alburnus mossulensis in Azad dam and Komasi River in Kordestan Province, Iran. Of ۵۲۲ specimens, the fork length, total length and weight of A. mossulensis ranged from ۷۰ to ۱۶۴, ۷۵-۱۷۵ mm, and ۴.۳ to ۴۸.۱ g and averaged (±SD) ۱۱۴.۰ (±۱۵.۹۷), ۱۲۷.۵ (±۲۵.۲۹) mm and ۱۸.۲ (±۵.۶۱) g, respectively. The length-weight regression was W=۰.۰۰۰۳×FL۲.۷۴۳۴ indicating a negative allometric growth. The sex ratio (M:F) was ۱:۰.۴۹, for adult A. mossulensis (n=۱۳۴) which differed significantly from the expected ۱:۱ ratio (p<۰.۰۰۱). The von Bertalanffy growth parameters were estimated as L∞=۱۷۰.۳ mm, K=۰.۴۶ yr-۱, t۰=-۰.۵۹ yr. The instantaneous coefficient of natural mortality was estimated as ۰.۸۵ yr-۱. The average of condition factor (KF) was ۱.۲۷(±۰.۱۶۱). Statistically significant differences were found in KF during different seasons (p<۰.۰۰۱). There was a significantly negative correlation between FL and KF (r۲=۰.۶۰). The average of relative condition factor (Kn) was ۱.۰۶±(۰.۱۳۰). In the present study, the Kn of A. mossulensis were close to ۱ and greater than ۱ in Komasi River and reservoir, respectively. These results suggested the well-being of the fish was good in Azad Dam region. 

نویسندگان

H Fazli

Caspian Sea Ecology Research Center

G.R Daryanabard

Caspian Sea Ecology Research Center

A Janbaz

Caspian Sea Ecology Research Center

M Naderi Jolodar

Caspian Sea Ecology Research Center

R Mirzaei

Jihad-Agriculture of Kurdistan Organization

H Hoseinpour

Jihad-Agriculture of Kurdistan Organization

N Vahedi

Jihad-Agriculture of Kurdistan Organization

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