- Turkish Journal of Veterinary and Animal Sciences
- Vol: 25 Issue: 6
- Determination of Some Population Parameters and Reproduction Period of Whiting (Merlangius merlangus...
Determination of Some Population Parameters and Reproduction Period of Whiting (Merlangius merlangus euxinus Nordmann, 1840) on the Trabzon-Yomra Coast in the Eastern Black Sea
Authors : Erhan Çiloğlu, Cemalettin Şahin
Pages : 831-837
View : 7 | Download : 3
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :In this study, the growth, age composition, sex ratio, condition factor and spawning period of whiting (Merlangius merlangus euxinus Nordmann, 1840) on the eastern part of the Trabzon-Yomra coast were investigated. During the study, a total of 1730 fish (1122 females and 608 males) ranging in age from group I to IX were examined. The chi squared test was used to calculate ratios between female and male specimens and no significant difference was found (P>0.05), and the relative growth length and the relative growth weight differences between females and males were not found to be statistically significant (P>0.05). The calculated length-weight relationships for females and males are as follows, respectively: W=0.0037L3.259, W=0.0042L3.206. Von Bertalanffy growth constants were estimated to be L\infity=52.500 cm, K=0.092, t0=-1.759 for females and L\infity=37.190 cm, K=0.114, t0=-2.390 for males. The results of this investigation show that reproduction takes place throughout the year with a peak from January to August and fish reach sexual maturity at age I.Keywords : Trabzon-Yomra coasts, Whiting (Merlangius merlangus euxinus), Growth, Condition Factor, Spawning.