Abstract
This study was carried out to determine the temporal and spatial distribution of Liocarcinus depurator (Crustacea: Decapod) caught by beam trawl in the southeast Black Sea between December 2012 and November 2013. Sampling was executed at depths from shoreline to deeper 30 m by using a 2 m wide beam trawl from İyidere, Merkez and Çayeli stations. L. depurator was determined most intensely (1000 m2) at 0-5 m depth at Çayeli station and during the summer season. L. depurator started to migrate from shallow to deeper in autumn and left the coast completely in winter. It approached the shore again in the spring and spread at all depths in the summer season. In addition, while it was distributed in three different habitats according to CPUE values, the highest CPUE value was calculated at Çayeli station, which has a macroalgae structure.
Highlights
Blue-leg swimcrab Liocarcinus depurator is distributed in the North Sea, Atlantic Ocean, Mediterranean Sea and Black Sea (Horton & Lilley, 2008)
L. depurator started to migrate from shallow to deeper in autumn and left the coast completely in winter. It approached the shore again in the spring and spread at all depths in the summer season. While it was distributed in three different habitats according to catch per unit effort (CPUE) values, the highest CPUE value was calculated at Çayeli station, which has a macroalgae structure
CPUE and abundance analyses according to location, depth and season groups were performed according to One-way analysis of similarity (ANOSIM) (Clarke & Warwick, 1994)
Summary
Blue-leg swimcrab Liocarcinus depurator is distributed in the North Sea, Atlantic Ocean, Mediterranean Sea and Black Sea (Horton & Lilley, 2008). It is a wide species of bathymetry, temperature and habitat (Zariquiey-Álvarez, 1968, Minervini et al, 1982; Pérès & Picard, 1965; Christiansen, 1982). It is found in a variety of substrates, it is most commonly found in mud, coastal-littoral mud and both mid-shore and culletfilled sands (Schembri & Lanfranco, 1984). Studies on crab species in the Black Sea are generally on taxonomy and records
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