Bottom trawl selectivity parameters of four fish species from Karataş coasts of Turkey in Northeastern Mediterranean Waters

Erdogan CICEK


The bottom trawl selectivity parameters (22mm cod-end mesh size) were determined for Saurida undosquamis, Mullus barbatus, Upeneus pori, and Pagellus erythrinus along Karatas coasts of Turkey in northeastern Mediterranean waters during fishing season for the year 2002-2003. The lengths at first capture (L50) values for S. undosquamis, M. barbatus, U. pori and P. erythrinus were 12.57, 9.27, 10.20 and 7.20cm, respectively. When lengths at first maturity of these species were taken into consideration, it was concluded that bottom trawl fisheries carried out in breeding areas creates a high fishing pressure (overfishing) on all species and enlarging the mesh size of the net is not enough to prevent the high fishing pressure on these species.


Selectivity parameters, Fisheries, Saurida, Mullus, Upeneus, Pagellus.

Full Text:



Akyuz, E. 1957. Observation on the Iskenderun red mullet (Mullus barbatus) and its environment. Proceedings of General Council Mediterranean 4: 305-326.

Anonymous. 2006. Regulation of commercial fishery in marine and freshwater fishery 2006-2008 37/1. Republic of Turkey, Ministry of Agriculture and Rural Affairs, General Directorate of Protection and Control, Ankara.

Ben-Yami, M. & Glaser, T. 1974. The invasion of Saurida undosquamis (Richardson) into the Levant Basin-an example of biological effect of interoceanic canals. Fish. Bull. 72: 359-373.

Bilecenoglu, M.; Kaya, M.; Cihangir, B. & Çiçek, E. 2014. An updated checklist of the marine fishes of Turkey. Turkish Journal of Zoology 38: 901-929.

Bingel, F. & Avşar, D. 1988. Food items of Saurida undosquamis in the Northern Cilician Basin (Eastern Mediterranean). Rapports et Proces-Verbaux des Reunions de la Commission Internationale pour l’Expolaration Scientific de le Mer Mediterranee 31: V-II9.

Bingel, F. 1987. Quantitative fisheries on eastern Mediterranean. Middle East Technical University, Institute of Marine Sciences, METU, Erdemli, Mersin, 312s (in Turkish).

Bingel, F.; Ozsoy, E. & Ünlüata, Ü. 1993. A review of the state of the fisheries and the environment of the Northeastern Mediterranean (northern Levantine Basin), Studies and Reviews. General Fisheries Council for the Mediterranean, No: 65, Rome, 74p.

Caddy, J-F. 1993. Some future perspectives for assessment and management of Mediterranean Fisheries. Scientia Marina 57: 121-130.

Çelik, Ö. & Torcu, H. 2000. Biology on red mullet (Mullus barbatus Linnaeus, 1758) in Edremit Bay Aegean Sea. Turkish Journal of Veterinary & Animal Sciences 24: 287-295 (in Turkish).

Çiçek, E.; Avşar, D.; Yeldan, H. & Ozütok, M. 2002. Population characteristics, growth, reproduction and mortality of Por's goatfish (Upeneus pori Ben-Tuvia & Golani, 1989) inhabiting in Babadıllimanı Bight (Northeastern Mediterranean-Turkey). Workshop on Lessepsian Migration Proceedings, 20-21 July 2002, Gökçeada, 92-99.

Çiçek, E.: Karataş, M.; Avşar, D. & Moradi, M. 2014. Catch Composition of the bottom trawl fishery along the Coasts of Karataş-Adana (Northeastern Mediterranean Sea). International Journal of Aquatic Biology 2(5): 229-237.

Genç, Y. 2000. Population parameters and bio-ecological features of the red mullet (Mullus barbatus ponticus Ess., 1927) Stocks from the Eastern Black Sea Coast. PhD Thesis, Black Sea Technical University, Trabzon, 182p.

Genç, Y.; Mutlu, C.; Aydin, İ.; Zengin, B. & Tabak, İ. 2002. Effects of fishery on demersal fish stocks in the Eastern Black Sea Coast. Republic of Turkey, Ministry of Agriculture and Rural Affairs, General Directorate of Agricultural Research, TAGEM/IY/97/17/03/006, Trabzon, 114p (in Turkish).

Gucu, A.C. & Bingel, F. 1994. Study on the red mullet fishery in northeastern Mediterranean. Aegean University Journal of the Faculty of Science 16: 1027-1035 (in Turkish).

Gucu, A.C. 2000. Fish stocks in northeastern Mediterranean 20-years’ time series. 1st National Marine Science Congress, 30 May-2 June, Ankara, 160-164.

Gucu, A.C. 2001. Ecosystem changes and Turkish fisheries in the eastern Mediterranean. Workshop on Technological Development in Fisheries, 19-21 June 2001, İzmir (in Turkish).

Gurbet, R.; Hossucu, H.; Ilkyaz, A.T. & Ozekinci, U. 1997. The study on the comparison of selectivity of 40 and 44 mm mesh size in the trouser bottom trawls. Mediterranean Fisheries Congress, 9-11 April 1997, Izmir, Turkey, 77–91 (in Turkish).

Ismen, A. & Ismen, P. 2001. Reproduction biology, fecundity and population dynamics of species belonging to Mullidae family. M.K.U. Research Foundation, No: 99/E-3702, 27p (in Turkish).

Ismen, A. 2003. Maturity and fecundity of lizardfish (Saurida undosquamis Richardson, 1848) in İskenderun Bay (Eastern Mediterranean). Turkish Journal of Zoology 27: 231-238.

Lök, A.; Tokac, A.; Tosunoglu, Z.; Metin, C. & Ferro, R.S.T. 1997. The effect of different cod-end design on bottom trawl selectivity in Turkish fisheries of the Aegean Sea. Fisheries Research 36: 1-14.

Main, J.; Sangster, G.I.; Kynoch, R.J. & Ferro, R.S.T. 1992. An experiment to measure the selectivity of cod-ends using two designs of cover. Scottish Fisheries Working Paper No: 2/92, 11p.

Mert, İ.; Doğan, M.; Türkmen, M.; Karataş, B. & Yavuzkan, Y. 1983. Study on spawning period of economical important fish species caught from Antalya Bay. Republic of Turkey, Ministry of Agriculture and Rural Affairs, General Directorate of Fisheries, Project no: 82-A050050-7, Antalya, 34p (in Turkish).

Metin, C. 1995. Effects of square mesh on modern deep trawl nets selectivity. Phd Thesis, Ege University, İzmir, 77p.

Ozbilgin, H. & Tosunoglu, Z. 2003. Comparison of the selectivity of double and single codends. Fish. Res. 63: 143-147.

Ozyurt, C.E. 2003. The Determination of mesh size for some commercially important demersal fish species captured by deep trawl net at Babadıllimanı Bight (Silifke-Mersin). Phd Thesis, Cukurova University, Adana, 124p (in Turkish).

Pipitone, C.; Badalamenti, F.; D’anna, G. & Patti, B. 2000. Fish biomass increase after a four-year trawl ban in the Gulf of Castellammare (NW Sicily, Mediterranean Sea). Fisheries Research 48: 23-30.

Pope, J.A.; Margets, A.R.; Hamley I.M. & Akyuz, E.F. 1975. Manual of methods for fish stock assessment. Part 3. selectivity of fishing gear. FAO Technical Paper, No: 41, Rome, 165p.

Quignard, J.P. & Tomasini, J.A. 2000. Mediterranean fish diversity. Biologia Marina Mediterranea 7: 1-66.

Reeves, S.A.; Armstrog, D.W.; Freyer, R.J. & Coull, K.A. 1992. The effect of mesh size cod-end extension length and cod-end diameter on selectivity of Scottish trawls and seines. ICES Journal of Marine Science 49: 279-328.

Sari, M. & Tokac, A. 1995. Experimental methods on trawl selectivity. E.U. Journal of Fisheries and Aquatic Sciences 12: 171-183.

Sparre, P. & Venema, S.C. 1992. Introduction to tropical fish stock assessment-Part I: Manual. FAO Fisheries Technical Paper, No: 306/1, Rome, 376p.

Sparre, P.; Ursin, E. & Venema, S.C. 1989. Introduction to tropical fish stock assessment-Part II: Manual. FAO Fisheries Technical Paper, No: 306/2, Rome, 429p.

Tokac, A.; Lök, A.; Metin, C.; Tosunoglu Z. & Ulaş, A. 1995. Selectivity research for demersal fish resource in trawl fishery. TUBİTAK, Project No: DEBAG-105, Izmir, 80p (in Turkish).

Tokac, A.; Ozbilgin, H. & Tosunoglu, Z. 2004. Effect of PA and PE material on codend selectivity in Turkish bottom trawl. Fisheries Research 67: 317-327.

Tosunoglu, Z. & Tokac, A. 1997. Improvement of deep trawl net selectivity. Fisheries Congress, 9-11 April 1997, Izmir, Turkey, 103-109 (in Turkish).

Türeli, C. & Erdem, Ü. 1997. The growth performance of red mullet (Mullus barbatus Linnaeus, 1758) and brushtooth lizardfish (Saurida undosquamis (Richardson, 1848)) from the coastal region of Adana Province (İskenderun Bay, Turkey). Turkish Journal of Zoology 21: 329-334.


  • There are currently no refbacks.