Doğu Karadeniz (Hopa-Sinop) bölgesinde mezgit balığının Merlangius merlongus euxinus (Nordmann 1840) biyolojisi ve populasyon dinamiği

Abstract

- 61 - SUMMARY This study is on whiting (Merlangius merlangus euxinus Nordmann, 18^0), due to its emportance in Turkey's fishing as a shallow water species. If palagic species at the Eastern Black Sea are omitted, whiting, with a percentage of 75.5 % appears as an important catch. Our investigations have been conducted in two different areas, one being in between Sinop and Giresun, and the other in beetween Giresun and Hopa at the Eastern Black Sea. Trawl data from 21 preselected stations have been evaluated. As a result a number of findings have been made on morphology, biology, length constants, age-weight relations, death and loss Indices, stock use, and bio-mass properties of these fishes. Trawl materials and catch compo sition have also been evaluated besides fishing activities of the future.