Ali ULAŞ, ALtan LÖK, F. Ozan DÜZBASTILAR

Dip trolünün torba kısmından kaçan kırma mercan balığının (Pagellus erythrinus Linnaeus, 1758) ölüm oranları: Su sıcaklığının etkisi

Ocak-Şubat 2011 ve Eylül 2012 tarihleri arasında toplam 24 trol çekimi yapılmıştır. 800 gözlü kesimli dip trol ağından kaçan kırma mercan (Pagellus erythrinus) bireylerini yakalamak için örtü kullanılmıştır. 40 mm kare, 44 ve 50 mm rombik gözlü trol torbalarından kaçan bireylerin ölüm oranları 7 gün boyunca yapılan gözlemler ile tespit edilmiştir. Ayrıca su sıcaklığının kırma mercan ölümleri üzerine etkisi de incelenmiştir. Kırma mercan’ın ölüm oranları düşük bulunmuştur (0,05). Her iki mevsim için de ağ göz boyutu ve şekli istatistiksel olarak önemli bir faktör değildir (p>0,01).

Mortality of Common pandora (Pagellus erythrinus Linnaeus, 1758) escaping from demersal trawl codends: Water temperature effect

In total, 24 replicate hauls were conducted on January-February in 2011 and September in 2012. A tailored bottom trawl with 800 meshes around the mouth was used with covers to retain individuals of common pandora (Pagellus erythrinus). Mortality of fish escaping through 40 mm square, 44 and 50 mm diamond mesh codends was investigated by collecting and monitoring the escapees from the codend covers for 7 days. We also observed possible water temperature effect in the escape mortality of common pandora. The escape mortality of common pandora was negligible (0.05). Mesh size and shape was not a significant factor (p>0.01) for the both seasons.

PDF

___

Suuronen, P., Lehtonen, E., & Jounela, P. (2005). Escape mortality of trawlcaught Baltic cod (Gadus morhua) - the effect of water temperature, fish size and codend catch. Fisheries Research, 71, 151-163. DOI: 10.1016/j.fishres.2004.08.022
Tosunoğlu, Z., Özbilgin, H., & Özbilgin, Y.D. (2003). Body shape and trawl codend selectivity for nine commercial fish species. Journal of the Marine Biological Association of the United Kingdom, 83, 1309-1313. DOI: 10.1017/S0025315403008737
Tosunoğlu, Z., Aydın, C., Salman, A., & Fonseca, P. (2009). Selectivity of diamond, hexagonal and square mesh codends for three commercial cephalopods in the Mediterranean. Fisheries Research, 97, 95-102. DOI: 10.1016/j.fishres.2009.01.006
Sangster, G.I., Lehmann, K., & Breen, M. (1996). Commercial fishing experiments to assess the survival of haddock and whiting after escape from four sizes of diamond mesh codends. Fisheries Research, 25, 323- 345. DOI: 10.1016/0165-7836(95)00430-0
Soykan, O., Akgül, Ş.A., & Kınacıgil, H.T. (2016). Catch composition and some other aspects of bottom trawl fishery in Sığacık Bay, central Aegean Sea, eastern Mediterranean. Journal of Applied Ichthyology, 32(3), 542–547. DOI: 10.1111/jai.13042
Suuronen, P., Erickson, D.L., & Orrensalo, A. (1996). Mortality of herring escaping from pelagic trawl codends. Fisheries Research, 25: 305-321. DOI: 10.1016/0165-7836(95)00446-7
Suuronen, P. (2005). Mortality of fish escaping trawl gears. FAO Fisheries Technical Paper 478, Rome, Italy.
Ricker, W.E., 1973. Linear regressions in fishery research. Journal of the Fisheries Research Board of Canada, 30(3), 409-434. DOI: 10.1139/f73-072
Metin, C., Tokaç, A., Ulaş, A., Düzbastılar, F.O., & Lök, A. (2004). Survival of red mullet (Mullus barbatus L., 1758) after escape from a trawl codend in the Aegean Sea. Fisheries Research, 70, 49-53. DOI: 10.1016/j.fishres.2004.06.013
Metin, G., İlkyaz, A.T., Soykan, O., & Kınacıgil, H.T. (2013). Biological characteristics of the common pandora, Pagellus erythrinus (Linnaeus, 1758), in the central Aegean Sea. Turkish Journal of Zoology, 35(3), 307- 315. DOI: 10.3906/zoo-0904-4
Özbilgin, H., & Wardle, C.S. (2002). Effect of seasonal temperature changes on the escape behaviour of haddock, Melanogrammus aeglefinus, from the codend. Fisheries Research, 58 (3): 323-331. DOI: 10.1016/S0165-7836(01)00394-0
Özbilgin, H., & Tosunoğlu, Z. (2003). Comparison of the selectivities of double and single codends. Fisheries Research, 63: 143-147. DOI: 10.1016/S0165-7836(03)00005-5
Özbilgin, H., Tosunoğlu, Z., Tokaç, A., & Metin, G. (2007). Seasonal variation in the trawl codend selectivity of blotched picarel (Spicara smaris). ICES Journal of Marine Science, 64, 1569-1572. DOI: 10.4194/trjfas.2011.0203
Düzbastılar, F.O. (2014). Determining escape mortality of red bandfish (Cepola macrophthalma) escaping from bottom trawl (in Turkish). Ege Journal of Fisheries and Aquatic Sciences, 31(2), 61-68. DOI: 10.12714/egejfas.2014.31.2.02
Düzbastılar, F.O., Laleli, T., Özgül, A. & Metin, G. (2015). Determining the severity of skin injuries of red mullet, Mullus barbatus (Actinopterygii: Perciformes: Mullidae), inflicted during escape from trawl codend. Acta Ichthyologica Et Piscatoria, 45(1), 75-83. DOI: 10.3750/AIP2015.45.1.08
Düzbastılar, F.O., Aydın, C. & Gül, B. (2016). Mortality of non-target flatfishes escaping from demersal trawl codends. Journal of Applied Ichthyology, 32, 1194-1204. DOI: 10.1111/jai.13220
Düzbastılar, F.O., Aydın, C., Metin, G., Lök, A. & Ulaş, A. (2010c). Survival of fish after escape from a 40 mm streched diamond mesh trawl codend in the Aegean Sea. Scienta Marina, 74(4), 755-761. DOI: 10.3989/scimar.2010.74n4755
Düzbastılar, F.O., Breen, M., Aydın, C., Özbilgin, H., Özgül, A., Ulaş, A., Metin, G., Gül, B. & Lök, A. (2017). Seasonal variation in mortality of red mullet (Mullus barbatus) escaping from codends of three different sizes in the Aegean Sea. Scienta Marina, 81(3): 339-349. DOI: 10.3989/scimar.04600.19A
Fulton, T.W. (1904). The rate of growth of fishes. Fisheries Board of Scotland Annual Report 22. Edinburgh (Part 3).
Düzbastılar, F.O., Özbilgin, H., Aydın, C., Metin, G. & Ulaş, A. (2010b). Mortalities of fish escaping from square and diamond mesh codends in the Aegean Sea. Fisheries Research, 106, 386-392. DOI: 10.1016/j.fishres.2010.09.008
Gilman, E., Suuronen, P., Hall, M. & Kennelly, S. (2016). Causes and methods to estimate cryptic sources of fishing mortality. Journal of Fish Biology, 83, 766-803. DOI: 10.1111/jfb.12148
Lehtonen, E., Tschernij, V. & Suuronen, P. (1998). An improved method for studying survival of fish that escape trawl-codend meshes. Fisheries Research, 38, 303-306. DOI: 10.1016/S0165-7836(98)00163-5
Ingólfsson, O.A., Soldal, A.V., Huse, I. & Breen, M. (2007). Escape mortality of cod, saithe, and haddock in a Barents Sea Trawl Fishery. ICES Journal of Marine Science, 64, 1836-1844. DOI: 10.1093/icesjms/fsm150
He, P. & Wardle, C.S. (1988). Endurance at intermediate swimming speeds of Atlantic mackerel, Scomber scombrus L., herring, Clupea harengus L., and saithe, Pollachius virens L. Journal of Fish Biology, 33, 348-360. DOI: 10.1111/j.1095-8649.1988.tb05468.x
Guijarro, B. & Massuti, E. (2006). Selectivity of diamond- and square-mesh codends in the deepwater crustacean trawl fishery off the Balearic Islands (western Mediterranean). ICES Journal of Marine Science, 63, 52-67. DOI: 10.1016/j.icesjms.2005.08.011
Carscadden, J.E. & Frank, K.T. (2002). Temporal variability in the condition factors of Newfoundland capelin (Mallotus villosus) during the past two decades. ICES Journal of Marine Science, 59, 950-958. DOI: 10.1006/jmsc.2002.1234
Deval, M.C., Bök, T., Ateş, C. & Özbilgin, H. (2006). Selectivity of PE and PA material codends for rose shrimp Parapenaus longirostis in Turkish twin rigged beam trawl fishery. Fisheries Research, 81, 72-79. DOI: 10.1016/j.fishres.2006.05.007
Düzbastılar, F.O., Özgül, A., Aydın, İ., Gül, B. & Soykan, O. (2010a). A preliminary study on the survival of brown comber, Serranus hepatus (Actinopterygii, Perciformes, Serranidae), escaping from the codend of a bottom trawl. Acta Ichthyologica Et Piscatoria, 40, 27-36. DOI: 10.3750/AIP2010.40.1.04
Barton, B.A. & Schreck, C.B. (1987). Metabolic cost of acute physical stress in juvenile steelhead. Transactions of the American Fisheries Society, 116, 257-263. DOI: 10.1577/1548-8659(1987)116<257: MCOAPS>2.0.CO;2
Bolger, T. & Connolly, P.L. (1989). The selection of suitable indices for the measurement and analysis of fish condition. Journal of Fish Biology, 34: 171-182. DOI: 10.1111/j.1095-8649.1989.tb03300.x
Broadhurst, M.K., Suuronen, P., & Hulme A. (2006). Estimating collateral mortality from towed fishing gear. Fish and Fisheries, 7: 180-218. DOI: 10.1111/j.1467-2979.2006.00213.x
Brown, J.A., Johansen, P.H., Colgan, P.W. & Mathers, R.A. (1987). Impairment of early feeding behaviour of largemouth bass by pentachlorophenol exposure: a preliminary assessment. Transactions of the American Fisheries Society, 116: 71-78. DOI: 10.1577/1548-8659(1987)116<71:IOEFBO>2.0.CO;2