Trol Torbasinda Farklı Görüntüleme Sistemleri İle Görsel Seçicilik Değerlendirmeleri

Bu çalışmada Kasım 2013 ile Nisan 2014 arasında İskenderun Körfezi’nde 10 trol operasyonu gerçekleştirilmiştir. Bu operasyonlarda İskenderun Körfezi trol balıkçılığında trol ağ torbasında modifiye edilen görüntüleme sistemleri ile video ve resimleme çalışmaları yapılmıştır. Bu çalışmalar sonucunda bölge trol balıkçılığındaki seçicilik çalışmalarını destekler nitelikte görüntüler alınmıştır. Bu çalışmalarda kullanılan modifiye sitemeler hazır bulunan sualtı kameralarına nazaran daha efektif ve maliyeti düşük olmaktadır.

Anahtar Kelimeler:

Trol Torbası Görüntüleme, Trol Kamerası

Visual Selectivity Evaluations with Different Imaging Systems in Trawl Codends

In this study, 10 trawl operations were made between November 2013 and April 2014 in the Iskenderun Bay. In these opeartions, video and imaging records were carried out with systems modified in the trawl hauling in the Iskenderun Bay. As a result of these studies, images were obtained in support of the selectivity studies in the region trawl fish. Modification underwater trawl cam used in these studies are more effective and less costly than commercial trawl cameras.

Keywords:

Trawl Codend Visual Trawl Cam, East Mediterranean,

PDF

___

Alverson, D.L., Freeberg, M.H., Murawski S.A. ve Pope, J.G., 1994. A Global Assesment of Fisheries Bycatchs and Discards. FAO Fisheries Techinical Paper No:229. Rome 233s. Bahamon, N., Sarda, F. ve Suuronen, P. 2007. Potential Benefits from Improved selectivity in the Northwest Mediterranean Multispecies Trawl Fishery. ICES journal of Marine Science. Short Communication.1-4pp. Ben-Yami, M. 1964. Study of the Mediterranean trawl net. Modern Fishing Gear of the World, 2, 213-221. Dahm, E.1991. Doubtful Improvement of the Selectivity of Herring Midwater Trawls by means of Square Mesh Codends and Constructional Modifications of Diamond Mesh Codends. ICES C.M. B:2, 8 pp. Bryan, D. R., Bosley, K. L., Hicks, A. C., Haltuch, M. A. ve Wakefield, W. W. 2014. Quantitative video analysis of flatfish herding behavior and impact on effective area swept of a survey trawl. Fisheries Research, 154: 120-126. Demirci, S. 2009. Size selectivity of square and diamond mesh trawl codend for fish with different body shapes. Ph.D. thesis. Mustafa Kemal University. Hatay, 101 pp. Demirci, S., Doğru Z. ve Şimşek E. 2017. Effect of shortening the length of codend on brushtooth lizardfish caught in square mesh codend of otter trawl in Eastern Mediterranean. Indian Journal of Fisheries, 64(3): 29-34, DOI: 10.21077/ijf.2017.64.3.71048-05 Dremière, P. Y., Fiorentini, L., Cosimi, G., Leonori, I., Sala, A. and Spagnolo, A. 1999. Escapement from the main body of the bottom trawl used for the Mediterranean international trawl survey (MEDITS). Aquatic Living Resources, 12(3), 207-217. Efanov, S. F., Istomin, I.G. and Delmatov, A.A. 1987. Influence of the form of fish body and mesh on selective properties of trawls. ICES C.M., B:13, 22p. Lange, K. 1986. Observation of trawl gear by means of underwater TV. Marine Technology, 1(2): 50. Larsson, P. O., Claesson, B. ve Nyberg, L. 1988. Catches of Undersized Cod in Codends with Square and Diamond Meshes. ICES C.M., 57: 8 pp. Mac Lennan, D.N. 1992. Fishing Gear Selectivity. Fisheries Research, 13: 201-204. Main, J. ve Sangster, G. I. 1978. A new method of observing fishing gear using a towed wet submersible. Progress in Underwater Science, 3: 259-267. Özbilgin, H., Kınacıgil, H. T. ve İlkyaz, A. 2004. Dip Trol Ağlarında Balık Davranışları. Ege Üniversitesi Su Ürünleri Dergisi, 19 (1-2): 159-266. Sand, R. F. 1959. Midwater trawl design by underwater observations. Modern Fishing Gear of the World, 1: 209-212. Stergiou, K. I. Petrakis, G. ve Politou, C. Y. 1997. Size Selectivity of Diamond Square Mesh Cod-ends for Nephrops norvegicus in the Agean Sea. Fisheries Research, 29: 203-209. Stewart, P. A. M. 2002. A Review of Studies of Fishing Gear Selectivity in the Mediterranean. FAO COPEMED, Report No:9, 57 pp. Priestley, R., Wardle, C. S. ve Hall, C. D. 1985. The Marine Laboratory remote controlled fishing gear observation vehicle. ICES CM. Tokaç, A. Özbilgin, H. and Tosunoğlu, Z. 2004. Comparision of the Selectivity of PA and PE Codends. Fisheries Research, 67: 317-327pp. Tosunoğlu, Z. 2006. Investigation of the Relationship Between First Body Shape and Hanging Ratio for L50 Selection Length in a Traditional Trawl Codend. TÜBİTAK Journal of Veterinary and Animal Sciences, 30: 1-5. Tosunoğlu, Z., Özbilgin, H. and Tokaç, A. 2002. Effects of the protective bags on the cod-end selectivity in Turkish bottom trawl fishery. ICES FTFB WG Meeting, Sete, France, June 6-8. Valdemarsen, J. W. ve Suuronen, P. 1993. Modifying fishing gear to achieve ecosystem objectives. In, M. and Valdimarsson, G. editors, Responsible fisheries in the marine ecosystem. Food and Agriculture Organization of the United Nations and CABI-Publishing, Rome, Italy and Wallingford, UK. 321-341pp. Wickham, D. A. ve Watson, J. W. 1976. Scuba diving methods for fishing systems evaluation. Marine Fisheries Review, 38(7): 15-23. Wileman, D. A. Ferro, R. S. T. Fonteyne, R. ve Millar, R. B. 1996. Manual of methods of measuring the selectivity of towed fishing gears. ICES Cooperative Research Report No. 215. 126pp. Workman, I. K., Watson, J. W. and Mitchell, J. 1986. Underwater methods and equipment used by fishing gear researches in the Southeastern United States to study and evaluate trawling gear. FAO Expert Consultation on selective Shrimp Trawl Development, Mazatlan, Mexico.