Length-weight relationship and ‎some growth parameters of ‎Rutilus kutum (Kaminski 1901) in ‎the South Caspian Sea

Forouhar Vajargah, Mohammad; Sattari, Masoud; Imanpur, Javid; Bibak, Mehdi

doi:10.30473/eab.2020.44344.1681

Document Type : Article

Authors

¹ Ph.D. in Aquatic Ecology, Faculty of Natural ‎Resources Sowmehsara, Guilan University, Guilan, ‎Iran

² Professor, Fish Health and Diseases, Department of ‎Fisheries, Faculty of Natural Resources, University of ‎Guilan, Sowmehsara, Guilan university, Guilan, Iran

³ Associate Professor, Department of Fisheries, Faculty ‎of Natural Resources Sowmehsara, Guilan university, ‎Guilan, Iran

⁴ Ph.D., Department of Fisheries, Faculty of Natural ‎Resources Sowmehsara, Guilan university, Guilan, ‎Iran ‎

https://doi.org/10.30473/eab.2020.44344.1681

Abstract

Length-weight relationship and some growth parameters of Rutilus kutum were studied. In total, 112 specimens of kutum were collected randomly from beach seines at the southern shores of the Caspian Seafrom October 2016 to May 2017. The mean (±SD) total length, fork length, and weight for the whole population were 38.58±8.14, 35.57±7.65 cm and 659.48±334.06 g, respectively. The minimum and maximum length and weight of fish in different seasons were 16.5 and 51cm as well as 45 and 1525g, respectively. The mean (±SD) gonadosomatic and hepatosomatic indices for the whole population were 4.67±5.28 and 7.86±5.83, respectively. Analyses of length-weight relationships showed a strong correlation between these two parameters (R²=0.90). The length-weight ratio in males, females and total population were W= 0.821 L^2.4278, W=0.01 L^3.0025, W=0.041 L^2.6224,respectively. The t-test analysis showed a negative allometric growth pattern for males and the whole population, whereas females followed isometric growth pattern. The mean (±SD) condition factor (CF) were 1.10±0.41 in males, 1.01±0.11 in females and 1.07±0.35 in the whole population. The mean CF was higher in males in comparison with females, although the differences were not statistically significant.

Keywords

20.1001.1.23222387.1399.9.1.1.4

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Experimental animal Biology

Length-weight relationship and ‎some growth parameters of ‎Rutilus kutum (Kaminski 1901) in ‎the South Caspian Sea

References

References

Volume 9, Issue 1 - Serial Number 1
September 2020
Pages 11-20

Length-weight relationship and ‎some growth parameters of ‎Rutilus kutum (Kaminski 1901) in ‎the South Caspian Sea

References

References

Volume 9, Issue 1 - Serial Number 1September 2020Pages 11-20

Volume 9, Issue 1 - Serial Number 1
September 2020
Pages 11-20