Age, growth and length-weight relationship of brown trout Salmo trutta L. in the upper stream of Acheloos River, Greece

E. Klossa-Kilia, and I. C. Ondrias

aqua, International Journal of Ichthyology, pp. 29-36, Volume 1, Issue 3 – December 1994


The age, growth, length-weight relationship and condition factor (k) of brown trout, Salmo trutta L. was studied in a small tributary of the Acheloos river. Totally 309 specimens were collected. The age group 1+ and 2+ formed the greatest part of the population. The annual growth was estimated with the back-calculation method based on the relationship between scale radius and body length in 101 individuals. The length-weight relationship can be described by the following equations:

W = 0.0000266 L2.865 and W = 0.0000322 L2.825 for males and females respectively. The average codition factor (k) ranged from 1.16-1.25 and 1.10-1.21 for males and females respectively.

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