Volume 10, Issue 3 (Winter 2020)
J. Aqua. Eco 2020, 10(3): 61-72 |
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Sadeghinejad Masouleh E, Radkhah A R. Study on growth characteristics and age structure of Mesopotamian chub (Squalius berak Heckel, 1843) in the Kashkan River, Lorestan province. J. Aqua. Eco 2020; 10 (3) :61-72
URL: http://jae.hormozgan.ac.ir/article-1-890-en.html
URL: http://jae.hormozgan.ac.ir/article-1-890-en.html
Abstract: (2638 Views)
The present study aimed to investigate some biological characteristics of Mesopotamian chub (Squalius berak) in the Kashkan River, Lorestan province. 60 specimens of Mesopotamian chub were captured from the Kashkan River using electrofishing equipment in September 2018. Biometry and weight of fish specimens were measured using a caliper and digital scale, respectively. Then, length-length and length-weight relationships (LWR), growth pattern, condition factor, and age of the fish samples were studied. Based on the results, the mean length of males and females were 197.39 mm and 257.88 mm, respectively. Also, the mean weight of males was 101.2 g, and for females was 258.76 g. Results showed that male and female fish follow isometric and positive allometric growth patterns, respectively. The condition factor values for male and female fish were 1.06 and 1.13, respectively, indicating a desirable status for this fish species in the Kashkan River. In addition, the age range of fish was between 2+ to 5+ years and the highest frequency (41.93 %) was in the 3+ age group.
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This work is licensed under a Creative Commons — Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)