Bottom Trawl Discard off the Karatas (Northeastern Mediterranean, Turkey)

Erdogan Cicek* and Dursun Avsar

This study was carried out in 2002 and 2003 off the Karatas, located along the northeastern Mediterranean coast of Turkey. The deep trawl net was operated with a one-hour haul duration at three stations. During the study period, based on species, a total of 90 fish, five cephalopods, and 16 crustaceans were caught. On average, 37.9% of the total catch was discarded. The discard proportion of the total catch and the mean discard for each station varied monthly, ranging from 23.4% to 44.5%, and in each station as 13.2%, 21.4%, and 3.3% for Station I, Station II, and Station III, respectively. The main component of the discard was fish (68.6%), followed by crustaceans (26.7%) and cephalopods (4.7%). Among them, the most important discard was a crustacean species, namely Charybdis longicollis (9.5% of the total catch and 25.1% of the discard biomass). Despite its insights, the study is limited by temporal and spatial scope, indicating a need for broader, year-round assessments and expanded ecological monitoring in future research.

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Published on: May 20, 2025 Pages: 4-7

Full Text PDF Full Text HTML DOI: 10.17352/gje.000109
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