Age, Growth, and Gonadosomatic Index (GSI) of Mediterranean Horse Mackerel (Trachurus mediterraneus Steindachner, 1868) in the Eastern Black Sea

Authors

CEMALETTİN ŞAHİN
NAZLI KASAPOĞLU
A. MUTLU GÖZLER
FERHAT KALAYCI
NECATİ HACIMURTAZAOĞLU
CENGİZ MUTLU

DOI

10.3906/zoo-0805-26

Abstract

The aim of this study was to calculate the basic population parameters of Trachurus mediterraneus off the coast of the Eastern Black Sea. Average total length was estimated as 13.52 ± 1.884 cm for the entire population, 13.08 ± 1.594 cm for males, and 13.62 ± 1.804 for females. Average weight was 20.27 ± 8.819 g for the entire population, 18.65 ± 7.626 g for males, and 21.31 ± 9.184 g for females. Age of the fish ranged between 0 and 5 years. Length-weight, age-length, and age-weight relationships were estimated for the population, where W = 0.0089 × L^{2.9552}; L_t = 26.09 (1 - e{-0.125(t + 4.002)}); and W_t = 136.56 (1 - e{-0.125(t + 4.002)}). Total mortality rates were Z = 3.73 year^{-1} and M = 0.29 year^{-1} for natural deaths, and F = 3.44 year^{-1} for fishing mortality.

Keywords

Mediterranean horse mackerel, T. mediterraneus, Eastern Black Sea, age, growth, gonadosomatic index (GSI)

First Page

157

Last Page

167

Recommended Citation

ŞAHİN, CEMALETTİN; KASAPOĞLU, NAZLI; GÖZLER, A. MUTLU; KALAYCI, FERHAT; HACIMURTAZAOĞLU, NECATİ; and MUTLU, CENGİZ (2009) "Age, Growth, and Gonadosomatic Index (GSI) of Mediterranean Horse Mackerel (Trachurus mediterraneus Steindachner, 1868) in the Eastern Black Sea," Turkish Journal of Zoology: Vol. 33: No. 2, Article 5. https://doi.org/10.3906/zoo-0805-26
Available at: https://journals.tubitak.gov.tr/zoology/vol33/iss2/5