Turkish Journal of Veterinary and Animal Sciences

Yazarlar: Erhan ÇİLOĞLU, Cemalettin ŞAHİN

Konular:-

Anahtar Kelimeler:Trabzon-Yomra coasts,Whiting (Merlangius merlangus euxinus),Growth,Condition Factor,Spawning.

Özet: 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.

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