Determination of the Effect of Different Catching Methods Made with Gillnets on the Selectivity of Bogue (Boops boops Linneus, 1758)
Öz
This study was carried out to determine the effect of different fishing methods on gillnets selectivity. A total of 20 operations were performed on the shores of Canakkale province by applying stationary set and drive in fishing methods with gillnets which have 20, 22, 23, 25 mm mesh sizes. As a result of these operations, 976 Bogue (Boops boops) were caught. Just after the length and weight values were measured, selectivity analyses were performed. According to results, optimum catch lengths were calculated for gillnets which mesh sizes are 20, 22, 23 and 25 mm as 16.25 cm, 17.87 cm, 18.68 cm, 20.31 cm for the setting method and 19.13 cm, 21.04 cm, 22 cm, 23.91 cm for the drive-in fishery method, respectively. Therefore, optimum catch lengths for the drive-in fishery method were found 3 - 3.5 cm higher than the stationary setting method. The results of the research showed that the fishing method considerably effects gillnets selectivity.
Anahtar Kelimeler
Fishing Method Selectivity Canakkale Strait Gillnet Bogue (Boops boops)
Kaynakça
- Altinağac, U., Ayaz, A., Özekinci, U., & Öztekin A. (2008). Edremit Körfezi Dip Uzatma Ağlarının Teknik Özellikleri Ve Yapısal Farklılıkları. Journal of Fishery Sciences, 2(3): 432-439.
- Ayaz, A., Altınağaç, U., Öztekin A., & Özekinci, U. (2009). The Effect of Seasons on Gill Net Selectivity. Aquatic Sciences And Engineering, 34(4):116-121. Doi:https://doi.org/10.26650/ASE2019575395.
- 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.
- Clarke, J.R. (1960). Report on selectivity of fishing gear. ICNAF Spec. Publ., 2: 27-36.
- Gabriel, O., Lange, K., Dahm, E. & Wendt, T. (Eds.) (2005). Von Brandt’s Fish catching methods of the World, Blackwell, Oxford, UK, 536 pp.
- Gulland J.A., (1969). Manual of Methods For Fish Stock Assessment, Part I, Fish Population Analysis, Man FAO. Fish Sci., 4: 154.
- Hamley, J.M. (1975). Review of gillnet selectivity. Journal of the Fisheries Research Board of Canada,32:1943-1969. Doi:https://doi.org/10.1139/f75-233.
- Hickford, M.J.H. & Schiel, D.R. (1996). Gillnetting in southern New Zealand, Duration effects of sets and entanglement modes of fish. Fishery Bulletin, 94 (4): 669-677.
- Kınacıgil, H.T., İlkyaz, A.T., Metin, G., Ulaş, A., Soykan, O., Akyol, O., & Gurbet, R. (2008). Balıkçılık Yönetimi Açısından Ege Denizi Demersal Stoklarının İlk Ürüme Boyları, Yaşları Parametrelerinin Tespiti. TÜBİTAK-ÇAYDAG Proje No: 103Y132, 327p.
- Kolding, J. & Skålevik, Å. (2011). PasGear 2. A database package for experimental or artisanal fisherydata.Version 2.5. available at http://www.imr.no/forskning/bistandsarbeid/nansis/pasgear2/en.
- Kumova, C. A., Altinağac, U., Öztekin, A., Ayaz, A., & Aslan, A. (2015). Effect of Hanging Ratio on Selectivity of Gillnets for Bogue Boops boops L 1758. Turkish Journal of Fisheries and Aquatic Sciences, 15(2): 567-573. Doi: 10.4194/1303-2712-v15_2_43.
- 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., & 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:https://doi.org/10.1023/A:1008838220001.
- 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: https://doi.org/10.1006/jmsc.1996.0196.
- Monteiro, P., Bentes, L., Coelho, R., Correia, C., Goncalves, J.M.S., Lino, P.G., Ribeiro, J., & Erzini, K. (2006). Age and growth, mortality, reproduction and relative yield per recruit of the bogue, Boops boops Linne, 1758 (Sparidae), from the Algarve (south of Portugal) longline fishery. Journal of Applied Ichthyology, 22, 345-352. Doi: https://doi.org/10.1111/j.14390426.2006.00756.x.
- Von Brandt, A. (1975). Enmeshing nets: gillnets and entangling nets - the theory of their efficiency, Proc. EIFAC Symp.
Galsama Ağları İle Yapılan Farklı Avcılık Yöntemlerinin Kupes (Boops Boops Linneus, 1758) Seçiciliğine Etkisinin Belirlenmesi
Öz
Bu çalışma; farklı avcılık yöntemlerinin, galsama ağları seçiciliği üzerindeki etkisini belirlemek amacıyla yapılmıştır. Çanakkale ili kıyılarında 20, 22, 23, 25 mm göz genişliğine sahip galsama ağları ile dönek ve voli yöntemleri uygulanarak, toplamda 20 deneme yapılmıştır. Bu denemeler sonucunda 976 adet Kupes (Boops boops) balığı yakalanmıştır. Operasyonlar sonucunda yakalanan Kupes balıklarının toplam boyları ve ağırlıkları tespit edildikten sonra seçicilik analizleri gerçekleştirilmiştir. Analiz sonuçlarına göre 20, 22, 23 ve 25 mm göz genişliğine sahip galsama ağlarında optimum yakalama boyları dönek yönteminde sırasıyla 16,25 cm, 17,87 cm, 18,68 cm, 20,31 cm, voli yönteminde ise 19,13 cm, 21,04 cm, 22 cm, 23,91 cm olarak hesaplanmıştır. Bu sonuçlara göre voli yöntemi ile yakalanan balıkların optimum yakalama boylarının dönek yöntemi ile avlananlardan 3- 3,5 cm daha büyük olduğu belirlenmiştir. Araştırma sonuçları avcılık yönteminin galsama ağları seçiciliğini etkilediğini göstermiştir.
Anahtar Kelimeler
Avcılık Yöntemi Seçicilik Çanakkale Boğazı Galsama Ağları Kupes (Boops boops)
Kaynakça
- Altinağac, U., Ayaz, A., Özekinci, U., & Öztekin A. (2008). Edremit Körfezi Dip Uzatma Ağlarının Teknik Özellikleri Ve Yapısal Farklılıkları. Journal of Fishery Sciences, 2(3): 432-439.
- Ayaz, A., Altınağaç, U., Öztekin A., & Özekinci, U. (2009). The Effect of Seasons on Gill Net Selectivity. Aquatic Sciences And Engineering, 34(4):116-121. Doi:https://doi.org/10.26650/ASE2019575395.
- 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.
- Clarke, J.R. (1960). Report on selectivity of fishing gear. ICNAF Spec. Publ., 2: 27-36.
- Gabriel, O., Lange, K., Dahm, E. & Wendt, T. (Eds.) (2005). Von Brandt’s Fish catching methods of the World, Blackwell, Oxford, UK, 536 pp.
- Gulland J.A., (1969). Manual of Methods For Fish Stock Assessment, Part I, Fish Population Analysis, Man FAO. Fish Sci., 4: 154.
- Hamley, J.M. (1975). Review of gillnet selectivity. Journal of the Fisheries Research Board of Canada,32:1943-1969. Doi:https://doi.org/10.1139/f75-233.
- Hickford, M.J.H. & Schiel, D.R. (1996). Gillnetting in southern New Zealand, Duration effects of sets and entanglement modes of fish. Fishery Bulletin, 94 (4): 669-677.
- Kınacıgil, H.T., İlkyaz, A.T., Metin, G., Ulaş, A., Soykan, O., Akyol, O., & Gurbet, R. (2008). Balıkçılık Yönetimi Açısından Ege Denizi Demersal Stoklarının İlk Ürüme Boyları, Yaşları Parametrelerinin Tespiti. TÜBİTAK-ÇAYDAG Proje No: 103Y132, 327p.
- Kolding, J. & Skålevik, Å. (2011). PasGear 2. A database package for experimental or artisanal fisherydata.Version 2.5. available at http://www.imr.no/forskning/bistandsarbeid/nansis/pasgear2/en.
- Kumova, C. A., Altinağac, U., Öztekin, A., Ayaz, A., & Aslan, A. (2015). Effect of Hanging Ratio on Selectivity of Gillnets for Bogue Boops boops L 1758. Turkish Journal of Fisheries and Aquatic Sciences, 15(2): 567-573. Doi: 10.4194/1303-2712-v15_2_43.
- 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., & 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:https://doi.org/10.1023/A:1008838220001.
- 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: https://doi.org/10.1006/jmsc.1996.0196.
- Monteiro, P., Bentes, L., Coelho, R., Correia, C., Goncalves, J.M.S., Lino, P.G., Ribeiro, J., & Erzini, K. (2006). Age and growth, mortality, reproduction and relative yield per recruit of the bogue, Boops boops Linne, 1758 (Sparidae), from the Algarve (south of Portugal) longline fishery. Journal of Applied Ichthyology, 22, 345-352. Doi: https://doi.org/10.1111/j.14390426.2006.00756.x.
- Von Brandt, A. (1975). Enmeshing nets: gillnets and entangling nets - the theory of their efficiency, Proc. EIFAC Symp.
Ayrıntılar
| Birincil Dil | Türkçe |
|---|---|
| Konular | Balıkçılık Yönetimi |
| Bölüm | Araştırma Makaleleri |
| Yazarlar | |
| Yayımlanma Tarihi | 21 Aralık 2020 |
| Gönderilme Tarihi | 14 Ekim 2020 |
| Yayımlandığı Sayı | Yıl 2020 Cilt: 3 Sayı: 2 |
