Acta Nat. Sci.   |  e-ISSN: 2718-0638

Original article | Acta Natura et Scientia 2022, Vol. 3(1) 32-42

Age and Growth Parameters of African Catfish (Clarias gariepinus Burchell, 1822) From Asi River, Turkey

Emrah Şimşek, Zeynel Abi̇di̇n Gözler & Osman Samsun

pp. 32 - 42   |  DOI:   |  Manu. Number: MANU-2202-10-0003.R1

Published online: April 21, 2022  |   Number of Views: 201  |  Number of Download: 655


This study aimed to determine the age and growth parameters of the African catfish Clarias gariepinus (Burchell, 1822) from the Asi River. A total of 185 fish samples have been collected from the Asi River, located in the Eastern Mediterranean region of Turkey, from December 2018 to March 2019. Samplings were carried out with fyke-nets. Lengths and weights of samples ranged from 20.47 to 62.46 cm and 74.4 to 1874.2 g, respectively. The sex ratio (1:1.06) was biased toward males (p>0.05). In terms of length-weight relationship, b-values were calculated as 2.98, 2.83, and 2.94 for female, male, and whole samples, respectively. Isometric growth was determined. The Fulton condition factor (CF) value for all samples was calculated as 0.7591±0.009. The ages of fish samples ranged from I to IV, and the dominant age and total length (TL) groups of the population were the I and II age groups. The von Bertalanffy growth parameters were estimated as L_{\infty}=58.5 cm, K=0.41 year^{-1}, t_{0}=-0.7, Φ’=3.15 for females; L_{\infty}=68.3 cm, K=0.35 year^{-1}, t_{0}=-0.6, Φ’=3.21 for males and L_{\infty}=58.2 cm, K=0.39 year^{-1}, t_{0}=-0.4, Φ’=3.12 for whole collected samples. As a result, climate change and its effects, especially the construction of dams in certain parts of the river for agricultural irrigation purposes and the resulting lack of management negatively affect the natural living stocks of the Asi River. Therefore, it can be said that the C. gariepinus stocks in these areas are overexploited. Legal arrangements should be made in this region to correct these conditions._{\tfrac{_{_{}}}{}}

Keywords: Asi River Basin, Biological Parameters, Fyke-net, Overexploitation

How to Cite this Article?

APA 6th edition
Simsek, E., Gozler, Z.A. & Samsun, O. (2022). Age and Growth Parameters of African Catfish (Clarias gariepinus Burchell, 1822) From Asi River, Turkey . Acta Natura et Scientia, 3(1), 32-42. doi: 10.29329/actanatsci.2022.351.04

Simsek, E., Gozler, Z. and Samsun, O. (2022). Age and Growth Parameters of African Catfish (Clarias gariepinus Burchell, 1822) From Asi River, Turkey . Acta Natura et Scientia, 3(1), pp. 32-42.

Chicago 16th edition
Simsek, Emrah, Zeynel Abi̇di̇n Gozler and Osman Samsun (2022). "Age and Growth Parameters of African Catfish (Clarias gariepinus Burchell, 1822) From Asi River, Turkey ". Acta Natura et Scientia 3 (1):32-42. doi:10.29329/actanatsci.2022.351.04.

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