Acta Adriatica, Vol. 61 No. 1, 2020.
Original scientific paper
https://doi.org/10.32582/aa.61.1.6
Growth characteristics of the European hake, Merluccius merluccius (Linnaeus, 1758), inhabiting northeastern Mediterranean
Hulya Girgin
; Faculty of Veterinary, Dokuz Eylül University, 35890, Kiraz, Izmir, Turkey2*Faculty of Fisheries, Firat University, 23119, Elazig, Turkey
Nuri Başusta
; Faculty of Fisheries, Firat University, 23119, Elazig, Turkey
Abstract
In this study, the age and some growth characteristics of the European hake, Merluccius mer-luccius, from the northeastern Mediterranean were examined during 2015-2016 fishing season. A total of 661 European hake ranging from 9.8 to 51.6 cm in total length was captured by commercial trawler. Female/male ratio was 1/1.15. Age determination was conducted using the sagittal otoliths. Ages of examined individuals ranged from 1 to 7 years. The von Bertalanffy growth parameters fitted to the average measured total lengths-at-age for each sex separately and estimated as L∞= 93.98 cm, k= 0.114 year-1, t0= -0.597 year for females, as L∞= 77.65 cm , k= 0.153 year-1, t0= -0.343 year for males and as L∞= 84.44 cm, k= 0.135 year-1, t0= -0.469 year for combined sexes. The growth performance value (Φ) of the European hake population was computed as 2.98 for combined sexes. Mean condition factor value for population was 0.654±0.021; the highest condition factor was found as 1.01 in fish at age 7.
Keywords
European hake; Merluccius merluccius; age; growth; northeastern Mediterranean; condition factor
Hrčak ID:
240316
URI
Publication date:
30.6.2020.
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