Skip to main content Accessibility help

The size selectivity of whiting (Merlangius merlangus euxinus) caught by gillnet in the eastern Black Sea of Turkey

  • Ferhat Kalaycı (a1) and Tuncay Yeşılçıçek (a1)


The size selectivity of traditional gillnets for whiting, (Merlangius merlangus euxinus) was investigated in the eastern Black Sea between June 2010 and June 2011. Experimental fishing operations were carried out by using gillnets of 16, 17, 18, 20 and 22 mm mesh size. A total of 2038 specimens belonging to 16 different fish species were caught during the experiment. The Share Each Length's Catch Total method was used to fit gillnet selectivity curves. Gillnet selectivity was best described by a bi-modal selectivity curve. The modal catch sizes were estimated as 14.81, 15.74, 16.66, 18.51 and 20.37 cm for 16, 17, 18, 20 and 22 mm mesh sizes, respectively. Modal lengths and spread values increased with increasing mesh size. The majority of fish (71.8%) caught by 16 mm mesh size were less than the length at first sexual maturity.


Corresponding author

Correspondence should be addressed to: F. Kalaycı, Recep Tayyip Erdoğan University, Faculty of Fisheries, Rize-53100, Turkey email:


Hide All
Ayaz, A., Altınagaç, U., Özekinci, U., Özen, A., Altın, A. and Işmen, A. (2011) Effect of twine thickness on selectivity of gillnets for bogue, Boops boops, in Turkish waters. Mediterranean Marine Science 12, 358368.
Aydın, M. (1997) Estimation of the parameters of the selectivity of the gillnets used in whiting fishery. MSc thesis. Karadeniz Technical University, Trabzon, Turkey.
Aydın, M. and Düzgüneş, E. (2007) Estimation of selectivity of gillnets used in the Bodrum Peninsula, Turkish Journal of Aquatic Life (3–5:5–8), 456466.
Baranov, F.I. (1948) Theory and assessment of fishing gear. Moscow: Pishchepromizdat. English version issued as ‘Theory of fishing with gill nets’. Translated from Russian by Ontario Department of Land and Forests, Toronto, 45 pp.
Constat (1998) Gillnet software. Hjørring, Denmark.
Dinçer, A.C. and Bahar, M. (2008) Multifilament gillnet selectivity for the red mullet (Mullus barbatus) in the eastern Black Sea coast of Turkey, Trabzon. Turkish Journal of Fisheries and Aquatic Sciences 8, 355359.
Erzini, K., Gonçalves, J.M.S., Bentes, L., Moutopoulos, D.K., Casal, J.A.H.C., Soriguer, M.C., Puente, E., Errazkin, L.A. and Stergiou, K.I. (2006) Size selectivity of trammel nets in southern European small-scale fisheries. Fisheries Research 79, 183201.
Fabi, G., Sbrana, M., Biagi, F., Grati, F., Leonori, I. and Sartor, P. (2002) Trammel net and gillnet selectivity for Lithognathus mormyrus (L., 1758), Diplodus annularis (L., 1758), Mullus barbatus (L., 1758), in the Adriatic and Ligurian Seas. Fisheries Research 54, 375388.
Fabi, G. and Grati, F. (2008) Selectivity of gillnets for Solea solea (Osteichthyes: Soleidae) in the Adriatic Sea. Scientia Marina 72, 253263.
Fonseca, P., Martins, R., Campos, A. and Sobral, P. (2005) Gill-net selectivity off the Portuguese western coast. Fisheries Research 73, 323339.
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 of Turkey. PhD thesis. Karadeniz Technical University, Trabzon, Turkey.
Genç, Y., Zengin, M., Başar, S., Tabak, İ., Ceylan, B., Çiftçi, Y., Üstündağ, C., Akbulut, B. and Şahin, T. (1999) Economic marine products research project. Ministry of Agriculture and Rural Affairs of Turkey. TAGEM /IY/96/17/03/001. Central Fisheries Research Institute, Trabzon, 156 pp.
Genç, Y., Mutlu, C., Zengin, M., Aydın, İ., Zengin, B. and Tabak, İ. (2002) Determination of the Eastern Black Sea fishing power effect on demersal fish stocks. Ministry of Agriculture and Rural Affairs of Turkey. Final Report TAGEM /IY/96/17/03/006. Central Fisheries Research Institute, Trabzon, 122 pp.
Gregoire, F. and Lefebvre, L. (2003) Estimation of gillnet selectivity for Atlantic herring (Clupea harengus harengus L.) from the west coast of Newfoundland, 1997–2001. Canadian Industry Report of Fisheries and Aquatic Sciences 272.
Hamley, J.M. (1975) Review of gillnet selectivity. Journal of the Fisheries Research Board of Canada 32, 19431969.
Holst, R., Madsen, N., Fonseca, P., Moth-Poulsen, T. and Campos, A. (1998) Manual for gillnet selectivity, European Commission, Danimarka 43 pp.
Hovgard, H. and Lassen, H. (2000) Manual on estimation of selectivity for gillnet and longline gears in abundance surveys. ROME: FAO, Fisheries Technology Paper, 397 pp.
Ismen, A. (1995) The biology and population parameters of the whiting (Gadus merlangus euxinus Nordmann, 1840) in the Turkish coast of the Black Sea. PhD thesis. Middle East Technical University Institute of Marine Sciences, Mersin, Turkey.
Karakulak, F.S. and Erk, H. (2008) Gillnet and trammel net selectivity in the northern Aegean Sea, Turkey. Scientia Marina 72, 527540.
Millar, R.B. (1992) Estimating the size-selectivity of fishing gear by conditioning on the total catch. Journal of the American Statistical Association 87, 962968.
Millar, R.B. and Holst, R. (1997) Estimation of gillnet and hook selectivity using log-linear models. ICES Journal of Marine Science 54, 471477.
Millner, R.S. (1985) The use of anchored gill and tangle nets in the sea fisheries of England and Wales. Lowestoft: Ministry of Agriculture, Fisheries and Food. Directorate of Fisheries Research, Laboratory Leaflet No. 57.
Ministry of Agriculture and Rural Affairs of Turkey (2012) Fisheries regulation for marine and fresh waters for commercial fishery, 2012–2016 fishing period No. 3\1. Ankara: Ministry of Agriculture and Rural Affair of Turkey, 73 pp.
Özekinci, U. (2005) Determination of the selectivity of monofilament gillnets used for catching the annular sea bream (Diplodus annularis L., 1758) by length–girth relationships in İzmir Bay (Aegean Sea). Turkish Journal of Veterinary and Animal Sciences 29, 375380.
Park, H.H., Millar, R.B., Bae, B.S. and An, H.C. (2011) Size selectivity of Korean flounder (Glyptocephalus stelleri) by gillnets and trammel nets using an extension of SELECT for experiments with differing mesh sizes. Fisheries Research 107, 196200.
Santos, M.N. and Lino, P.G. (2010) Aspects of the fishery, maturation and net selectivity of the wedge sole (Dicologoglossa cuneata) off south-western Iberia: implications for fishery management. Journal of the Marine Biological Association of the United Kingdom 90, 14651474.
Samsun, S. (2005) The research on some reproduction and feeding characteristics of the whiting (Gadus merlangus euxinus Nordmann,1840). PhD thesis. Ondokuz Mayıs University, Samsun, Turkey.
Sparre, P. and Venema, S.C. (1998) Introduction to tropical fish stock assessment. Part 1. Manual. Rome: FAO, Fisheries Technology Paper No. 306-1, Rev. 2, 407 pp.
TUIK (2011) Fishery statistics 2010. Ankara: Turkish Statistical Institute Printing Division, 58 pp.


Related content

Powered by UNSILO

The size selectivity of whiting (Merlangius merlangus euxinus) caught by gillnet in the eastern Black Sea of Turkey

  • Ferhat Kalaycı (a1) and Tuncay Yeşılçıçek (a1)


Altmetric attention score

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.