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Selectivity of some fish species caught as bycatch by bogue gillnets around North Aegean Sea

Yıl 2017, Cilt 34, Sayı 1, 103 - 110, 21.02.2017
https://doi.org/10.12714/egejfas.2017.34.1.14

Öz

In this study, gillnet selectivity of saddled seabream (Oblada melanura), common two-banded seabream (Diplodus vulgaris), annular seabream (Diplodus annularis) and Mediterranean horse mackerel (Trachurus meditterraneus) which were caught by bogue gillnets with 20, 22, 23 and 25 mm mesh size (nominal bar lenght) have been determined. Fishing trials were carried out in Noth Aegean Sea from March 2008 to February 2010. Selectivity parameters were estimated using the Select method. Most suitable selectivity models were calculated as log-normal for saddled seabream (O. melanura) and annular seabream (D. annularis), bi-modal for Mediterranean horse mackerel (T. meditterraneus) and common two-banded seabream (D. vulgaris). Optimum catch lengths for 20, 22, 23 and 25 mm mesh size were 11.15, 12.27, 12.83 ve 13.94 cm for annular seabream (D. annularis), 11.26, 12.39, 12.95 and 14.08 cm for common two-banded seabream (D. vulgaris), 15.3, 16.83, 17.59 and 19.12 cm for saddled seabream (O. melanura) and 26.68, 29.35, 30.68 and 33.35 cm for Mediterranean horse mackerel (T. mediterraneus), respectively. These findings may help us to understand that using higher than 23 mm stretched mesh size with gillnets which have been used for commercial bogue fisheries around north Aegean Sea is important for sustainability of fisheries.

Kaynakça

  • Ayaz, A., Altınağaç, U., Özekinci, U., Cengiz, Ö. & Öztekin A. (2010). Effects of hanging ratio on gillnet selectivity for annular sea bream (Diplodus annularis) in the northern Aegean Sea, Turkey. Journal of Animal and Veterinary Advances, 9(7):1137-1142.
  • Besiktepe, S., Sur, H.I., Ozsoy, E., Latif, M.A., Oguz, T. & Unluata, U. (1994). The Circulation and hydrography of the Marmara Sea. Prog Oceanog., 34: 285–334.
  • Cetinic, P., Soldo, A., Dulcic, J. & Pallaoro, A. (2002) Specific method of fishing for Sparidae species in the eastern Adriatic. Fisheries Research, 55: 131-139. doi:10.1016/S0165-7836(01)00299-5
  • Cucin D. & Regier, H.A. (1966). Dynamics and Exploitation of Lake Whitefish in Southern Georgian Bay. Journal of the Fisheries Research Board of Canada, 23(2): 221-274. doi:10.1139/f66-020
  • Erzini, K., Gonçalves, J.M.S., Bentes, L., Lino, P. G., Ribeiro, J. and Stergiou, K.I. (2003). Quantifying the roles of competing static gears: comparative selectivity of longlines and monofilament gill nets in a multi-species fishery of the Algarve (southern Portugal). Scientia Marina, 67(3): 341-352. doi:10.3989/scimar.2003.67n3341
  • Fischer, W. & Schneider, M. (1987) Fiches FAO d'identification des especes pour les besoins de la peche Meditterranee et Mer Noire. Vol. II. Zone de peche 37. Revision 1, 1529 p., Rome.
  • Froese, R. & Pauly, D. (2006) Fishbase. World Wide Web Electronic Publication URL: http:// www. fishbase.org.
  • Gonçalves, J.M.S., Bentes, L., Coelho, R., Correia, C., Lino, P.G., Monteiro, C.C., Ribeiro J. & Erzini, K. (2003) Age and growth, maturity, mortality and yield-per-recruit for two banded bream (Diplodus vulgaris Geoffr.) from the south coast of Portugal. Fisheries Research, 62: 349-359. doi: 10.1016/S0165-7836(02)00280-1
  • Kinacigil, H.T. & İlkyaz, A.T. (1997). Ege Denizi Balıkçılığı ve Sorunları. Ege Journal of Fisheries and Aquatic Sciences, 14: (3-4):351-367.
  • Kinacigil, H.T., İlkyaz, A.T., Metin, G., Ulaş, A., Soykan O., Akyol O. & Gurbet R. (2008). First reproductive length, age, and growth parameters of demersal fish stocks from fisheries management perspective in Aegean Sea (in Turkish). TUBITAK-ÇAYDAG Project No: 103Y132, 327.
  • Kolding, J. & Skålevik, Å. (2011) PasGear 2. A database package for experimental or artisanal fishery data. Version 2.5. available at http://www.imr.no/forskning/bistandsarbeid/nansis /pasgear2/en.
  • Kurkilahti, M., Appelberg, M., Hesthagen, T. & Rask, M. (2002). Effect of fish shape on gillnet selectivity: a study with Fulton’s condition factor. Fisheries research, 54:153-170. doi:10.1016/S0165-7836 (00)00301-5
  • Metin, C., Lök, A. & İlkyaz, T.A. (1998) Faklı Göz Genişliğine Sahip Dip Uzatma Ağlarında İsparoz (Diplodus annularis Linn., 1758) ve İzmarit (Spicara flexuosa Rafinesque, 1810) Balıklarının Seçiciliği. Ege Journal of Fisheries and Aquatic Sciences, 15(3-4): 293-303.
  • Millar, R.B. (1992) Estimating the Size-Selectivity of Fishing Gear by Conditioning on the Total Catch. Journal of the American Statistical Association, 87: 962-968.
  • Millar, R.B. & Holst, R. (1997) Estimation of gillnet and hook selectivity using log-linear models. Ices Journal of Marine Science, 54: 471-477. doi: 10.1006/jmsc.1996.0196
  • Millar, R.B. & Fryer, R.J. (1999) Estimating the size-selection curves of towed gears, traps, nets and hooks. Reviews in Fish Biology and Fisheries, 9: 89-116. doi: 10.1023/A:1008838220001
  • Santos, M.N., Monteiro, C.C., Erzini, K. & Lasserre, G. (1998) Maturation and gill-net selectivity of two small sea breams (genus Diplodus) from the Algarve coast (south Portugal). Fisheries Research, 36: 185-194. doi: 10.1016/S0165-7836(98)00100-3
  • Stergiou, I., K. & Erzini, K. (2002). Comparative fixed gear studies in the Cyclades (Aegean Sea): size selectivity of small-hook longlines and monofilament gill nets. Fisheries Research, 58: 25–40. doi: 10.1016/S0165-7836(01)00363-0
  • Şahin, C., Kasapoğlu, N., Gözler, M.A., Kalaycı, F., Hacımurtazaoğlu, N. & Mutlu C. (2009). Age, Growth, and Gonadosomatic Index (GSI) of Mediterranean Horse Mackerel (Trachurus mediterraneus Steindachner, 1868) in the Eastern Black Sea. Turk J Zool, 33 (2009) 157-167.
  • Trent L. & Pristas P.J. (1977). Selectivity of Gill Nets on Estuarine and Coastal Fishes from St. Andrew Bay, Florida. Fishery Bulletin, 75(1): 185-198.
  • TÜİK, (2005). Su Ürünleri İstatistikleri, http://www.tuik.gov.tr/PreTablo.do?alt_id=1005 [Erişim Tarihi, 05.10.2016].
  • Whitehead, P.J.P., Bauchot, M., Hureau, J.C., Nielsen, J. & Tortonese, E. (1986) Fishes of the north-eastern Atlantic and the Mediterranean, Volume I, II and III, Vol., UNESCO, Paris.

Kuzey Ege Denizi’nde kupes uzatma ağlarında hedef dışı av olarak yakalanan bazı balık türlerinin seçiciliği

Yıl 2017, Cilt 34, Sayı 1, 103 - 110, 21.02.2017
https://doi.org/10.12714/egejfas.2017.34.1.14

Öz

Bu çalışmada 20, 22, 23 ve 25 mm ağ göz genişliğine sahip kupes uzatma ağlarından yakalanan Melanur (Oblada melanura), Karagöz (Diplodus vulgaris), Isparoz (Diplodus annularis) ve Sarıkuyruk İstavrit (Trachurus meditterraneus) türlerinin uzatma ağı seçiciliği belirlenmiştir. Balikçilik denemeleri Mart 2008 - Şubat 2010 tarihleri arasinda Kuzey Ege Denizi’nde gerçekleştirilmiştir. Seçicilik parametreleri SELECT metot kullanılarak tahmin edilmiştir. En uygun seçicilik modelinin melanur (O. melanura) ve ısparoz (D. annularis) için log-normal, sarıkuyruk istavrit (T. meditterraneus) ve karagöz (D. vulgaris) için ise bi-modal olduğu belirlenmiştir. 20, 22, 23 ve 25 mm ağ göz genişliğinde optimum yakalama boyları sırası ile Isparoz (D. annularis) için 11.15, 12.27, 12.83 ve 13.94 cm, Karagöz (D. vulgaris) için 11.26, 12.39, 12.95 ve 14.08 cm, Melanur (O. melanura) için 15.3, 16.83, 17.59 ve 19.12 cm ve sarıkuyruk istavrit (T. mediterraneus) için 26.68, 29.35, 30.68 ve 33.35 cm olarak tespit edilmiştir. Bu sonuçlar Kuzey Ege Denizi’nde kupes avcılığında kullanılan uzatma ağlarında 23 mm ağ gözü genişliğinden daha büyüğünün kullanımının sürdürülebilir avcılık açısından önemli olduğunu ortaya çıkarmıştır.

Kaynakça

  • Ayaz, A., Altınağaç, U., Özekinci, U., Cengiz, Ö. & Öztekin A. (2010). Effects of hanging ratio on gillnet selectivity for annular sea bream (Diplodus annularis) in the northern Aegean Sea, Turkey. Journal of Animal and Veterinary Advances, 9(7):1137-1142.
  • Besiktepe, S., Sur, H.I., Ozsoy, E., Latif, M.A., Oguz, T. & Unluata, U. (1994). The Circulation and hydrography of the Marmara Sea. Prog Oceanog., 34: 285–334.
  • Cetinic, P., Soldo, A., Dulcic, J. & Pallaoro, A. (2002) Specific method of fishing for Sparidae species in the eastern Adriatic. Fisheries Research, 55: 131-139. doi:10.1016/S0165-7836(01)00299-5
  • Cucin D. & Regier, H.A. (1966). Dynamics and Exploitation of Lake Whitefish in Southern Georgian Bay. Journal of the Fisheries Research Board of Canada, 23(2): 221-274. doi:10.1139/f66-020
  • Erzini, K., Gonçalves, J.M.S., Bentes, L., Lino, P. G., Ribeiro, J. and Stergiou, K.I. (2003). Quantifying the roles of competing static gears: comparative selectivity of longlines and monofilament gill nets in a multi-species fishery of the Algarve (southern Portugal). Scientia Marina, 67(3): 341-352. doi:10.3989/scimar.2003.67n3341
  • Fischer, W. & Schneider, M. (1987) Fiches FAO d'identification des especes pour les besoins de la peche Meditterranee et Mer Noire. Vol. II. Zone de peche 37. Revision 1, 1529 p., Rome.
  • Froese, R. & Pauly, D. (2006) Fishbase. World Wide Web Electronic Publication URL: http:// www. fishbase.org.
  • Gonçalves, J.M.S., Bentes, L., Coelho, R., Correia, C., Lino, P.G., Monteiro, C.C., Ribeiro J. & Erzini, K. (2003) Age and growth, maturity, mortality and yield-per-recruit for two banded bream (Diplodus vulgaris Geoffr.) from the south coast of Portugal. Fisheries Research, 62: 349-359. doi: 10.1016/S0165-7836(02)00280-1
  • Kinacigil, H.T. & İlkyaz, A.T. (1997). Ege Denizi Balıkçılığı ve Sorunları. Ege Journal of Fisheries and Aquatic Sciences, 14: (3-4):351-367.
  • Kinacigil, H.T., İlkyaz, A.T., Metin, G., Ulaş, A., Soykan O., Akyol O. & Gurbet R. (2008). First reproductive length, age, and growth parameters of demersal fish stocks from fisheries management perspective in Aegean Sea (in Turkish). TUBITAK-ÇAYDAG Project No: 103Y132, 327.
  • Kolding, J. & Skålevik, Å. (2011) PasGear 2. A database package for experimental or artisanal fishery data. Version 2.5. available at http://www.imr.no/forskning/bistandsarbeid/nansis /pasgear2/en.
  • Kurkilahti, M., Appelberg, M., Hesthagen, T. & Rask, M. (2002). Effect of fish shape on gillnet selectivity: a study with Fulton’s condition factor. Fisheries research, 54:153-170. doi:10.1016/S0165-7836 (00)00301-5
  • Metin, C., Lök, A. & İlkyaz, T.A. (1998) Faklı Göz Genişliğine Sahip Dip Uzatma Ağlarında İsparoz (Diplodus annularis Linn., 1758) ve İzmarit (Spicara flexuosa Rafinesque, 1810) Balıklarının Seçiciliği. Ege Journal of Fisheries and Aquatic Sciences, 15(3-4): 293-303.
  • Millar, R.B. (1992) Estimating the Size-Selectivity of Fishing Gear by Conditioning on the Total Catch. Journal of the American Statistical Association, 87: 962-968.
  • Millar, R.B. & Holst, R. (1997) Estimation of gillnet and hook selectivity using log-linear models. Ices Journal of Marine Science, 54: 471-477. doi: 10.1006/jmsc.1996.0196
  • Millar, R.B. & Fryer, R.J. (1999) Estimating the size-selection curves of towed gears, traps, nets and hooks. Reviews in Fish Biology and Fisheries, 9: 89-116. doi: 10.1023/A:1008838220001
  • Santos, M.N., Monteiro, C.C., Erzini, K. & Lasserre, G. (1998) Maturation and gill-net selectivity of two small sea breams (genus Diplodus) from the Algarve coast (south Portugal). Fisheries Research, 36: 185-194. doi: 10.1016/S0165-7836(98)00100-3
  • Stergiou, I., K. & Erzini, K. (2002). Comparative fixed gear studies in the Cyclades (Aegean Sea): size selectivity of small-hook longlines and monofilament gill nets. Fisheries Research, 58: 25–40. doi: 10.1016/S0165-7836(01)00363-0
  • Şahin, C., Kasapoğlu, N., Gözler, M.A., Kalaycı, F., Hacımurtazaoğlu, N. & Mutlu C. (2009). Age, Growth, and Gonadosomatic Index (GSI) of Mediterranean Horse Mackerel (Trachurus mediterraneus Steindachner, 1868) in the Eastern Black Sea. Turk J Zool, 33 (2009) 157-167.
  • Trent L. & Pristas P.J. (1977). Selectivity of Gill Nets on Estuarine and Coastal Fishes from St. Andrew Bay, Florida. Fishery Bulletin, 75(1): 185-198.
  • TÜİK, (2005). Su Ürünleri İstatistikleri, http://www.tuik.gov.tr/PreTablo.do?alt_id=1005 [Erişim Tarihi, 05.10.2016].
  • Whitehead, P.J.P., Bauchot, M., Hureau, J.C., Nielsen, J. & Tortonese, E. (1986) Fishes of the north-eastern Atlantic and the Mediterranean, Volume I, II and III, Vol., UNESCO, Paris.

Ayrıntılar

Konular Fen
Bölüm Makaleler
Yazarlar

Gökhan Subakan Bu kişi benim
CANAKKALE ONSEKIZ MART UNIV
Türkiye


Alkan Öztekin
CANAKKALE ONSEKIZ MART UNIV
0000-0003-3914-9788
Türkiye


İsmail Burak DABAN
CANAKKALE ONSEKIZ MART UNIV
Türkiye


Adnan Ayaz Bu kişi benim
CANAKKALE ONSEKIZ MART UNIV
Türkiye

Yayımlanma Tarihi 21 Şubat 2017
Başvuru Tarihi 11 Ekim 2016
Kabul Tarihi 10 Ocak 2017
Yayınlandığı Sayı Yıl 2017, Cilt 34, Sayı 1

Kaynak Göster

APA Subakan, G. , Öztekin, A. , Daban, İ. B. & Ayaz, A. (2017). Selectivity of some fish species caught as bycatch by bogue gillnets around North Aegean Sea . Ege Journal of Fisheries and Aquatic Sciences , 34 (1) , 103-110 . DOI: 10.12714/egejfas.2017.34.1.14