Catch Composition of Bottom Trawl Fisheries in Düzce Coast, southwestern Black Sea

Year 2017, Volume: 2 Issue: 3, 158 - 167, 30.11.2017

Tuba Öğreden Deniz Yağlıoğlu

https://doi.org/10.28978/nesciences.368342

Cited By: 2

Abstract

This study was performed to identify the catch composition of Düzce coast (southwestern
Black Sea) at depths of 30-110 meters by bottom trawl between September 2014 and August
2015. In the catch compositions of the Düzce coast, the abundance of the first, second and third
species were Merlangius merlangus with 73.12% (1290.29 kg / km2
), Gobius spp. with 9.30%
(164.04 kg/km2
) and Mullus barbatus with 9.05% (159.61 kg / km2), respectively. The other 33
species make up 8.53% of total fish biomass. When seasonal distribution was examined, the total
catch of fish were 1038.54, 2552.37, 1068.72, 5132.96 kg/km2
, of which economic (target) fish
species (Merlangius merlangus) constitute 745.72, 1726.14, 724.58, 4910.15 kg/km2
in autumn,
winter, spring and summer respectively. In this study, fishing a very high rate of discard whiting
in little sizes draws the attention. Whiting constitutes 56% of discard. Single or sporadic captures
were also recorded for Acipenser stellatus, Trachurus trachurus, Spicara smaris, Lophius
piscatorius, Serranus hepatus and Hippocampus hippocampus. Moreover, in this study, red list
status for 36 fish species belonging to 27 family in Düzce coasts were considered with the Red List
published by the International Union for conservation of Nature and Natural Resources (IUCN).
As a result of this comparison, it was determined that 2 species Critically Endangered (CR), 5
species Vulnerable (VU), 22 species Least Concern (LC), 4 species Not Evaluated (NE), 2 species
Data Deficient (DD).

Keywords

Southwestern Black Sea, Düzce coast, Bottom Trawl, Catch Composition, Turkey

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