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Balık morfolojisine göre gırgır boylama eleğinin alıkoyma olasılığı

Year 2021, Volume 38, Issue 2, 173 - 180, 15.06.2021
https://doi.org/10.12714/egejfas.38.2.06

Abstract



Gırgır teknelerinin güvertesine yerleştirilen çift ızgaralı eleğin alıkoyma-bırakma özellikler dört tür (Sardina pilchardus, Sardinella aurita, Engraulis encrasicolus ve Boops boops) için toplam uzunluk (TL) - maksimum yükseklik (Hmax) ve TL - maksimum genişlik (Wmax) ilişkilerinden tahmin edilerek ele alınmıştır. Bu ilişkileri ortaya çıkarmak için, 3 Nisan 2017 ile 21 Mart 2018 tarihleri arasında İzmir Körfezi'nde (Türkiye) gırgır örneklemeleri yapılmıştır. Ele alınan türler için regresyon eşitlikleri tanımlandıktan sonra, Sechin'in seçicilik yaklaşımının bir uyarlaması kullanılarak, her bir türün farklı çubuk aralığındaki elekler tarafından yakalanma olasılıkları hesaplanmıştır. Sonrasında minimum yasal boy ya da ilk eşeysel olgunluk boyuna karşılık gelen optimal elek çubuk aralığı (OEÇA) değerleri, her tür için ayrı ayrı hesaplanmıştır. OEÇA değerleri sardalya (Sardina pilchardus) için 10.97 mm, yuvarlak sardalya (Sardinella aurita) için 11.29 mm, hamsi (Engraulis encrasicolus) için 7.78 mm ve kupes (Boops boops) için 17.89 mm olarak bulunmuştur. Çubuk aralığı düzenlemeleri, Ege Denizi’ndeki gırgır avcılığı için yakalama boyunun altındaki balıkların serbest bırakılması için umut verici bir yönetim önlemi olabilir.




References

  • Anonymous. (2020). Notification 5/1. The commercial fish catching regulations in 2020-2024 fishing period. Republic of Turkey Ministry of Agriculture and Forestry, General Directorate of Fisheries and Aquaculture, Ankara (in Turkish).
  • Armstrong, D. W., Ferro, R. S. T., Maclennan, D. N. & S. A. (1990). Gear selectivity and the conservation of fish. Journal of Fish Biology, 37, 261-262. DOI:10.1111/j.1095-8649.1990.tb05060.x
  • Ben-Yami, M. (1994). Purse seining manual. Oxford, UK: A Division of Blackwell Scientific Publications Ltd.
  • Brčić, J., Herrmann, B. & Sala, A. (2018a). Predictive models for codend size selectivity for four commercially important species in the Mediterranean bottom trawl fishery in spring and summer: Effects of codend type and catch size. PLoS One, 13(10), e0206044, DOI:10.1371/journal.pone.0206044
  • Brčić, J., Herrmann, B., Mašanović, M., Šifner, S.K. & Škeljo, F. (2018b). CREELSELECT - A method for determining the optimal creel mesh: Case study on Norway lobster (Nephrops norvegicus) fishery in the Mediterranean Sea. Fisheries Research, 204, 433-440. DOI:1016/j.fishres.2018.03.020
  • Cihangir, B. & Ünlüoğlu, A. (2015). Status of small pelagic fishes in the Aegean Sea. In T. Katağan, A. Tokaç, Ş. Beşiktepe, & B. Öztürk B (Ed.), The Aegean Sea marine biodiversity, fisheries, conservation and governance (pp. 303-323). Turkish Marine Research Foundation (TUDAV).
  • Efanov, S. F., Istomin, I.G. & Delmatov, A. A. (1987). Influence of the form of fish body and mesh on selective properties of trawls. ICES C.M. 13.
  • FAO, (2020). FAO Yearbook. Fishery and Aquaculture Statistics 2018. http://www.fao.org/documents/card/en/c/cb1213t, DOI: 10.4060/cb1213t
  • Herrmann, B., Larsen, R.B., Sistiaga, M.B., Madsen, N., Aarsæther, K.G., Grimaldo, E. & Ingolfsson, O. (2016). Predicting size selection of cod (Gadus morhua) in square mesh codends for demersal seining: simulation-based approach. Fisheries Research, 184, 36-46. DOI: 10.1016/j.fishres.2015.07.015
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  • Matsushita, Y. & Ali, R. (1997). Investigation of trawl landings for the purpose of reducing the capture of non-target species and sizes of fish. Fisheries Research, 29, 133-143. DOI: 10.1016/S0165-7836(96)00534-6
  • Mendes, B., Fonseca, P. & Campos, A. (2006). Relationships between opercula girth, maximum girth and total length of fish species caught in gillnet and trammel net selectivity surveys off the Portuguese coast. Journal of Applied Ichthyology, 22, 209-213. DOI: 10.1111/j.1439-0426.2006.00734.x
  • Misund, O. A. & Beltestad, A. K. (1994). Size selection of mackerel and saithe in purse seine. ICES CM, 1994/B:28.
  • Sechin, Y. T. (1969). A mathematical model for the selectivity curve of a gillnet. Rbyn. Khoz., 45, 56-58.
  • Stergiou, K. I. & Erzini, K. (2002). Comparative fixed gear studies in the Cyclades (Aegean Sea): Size selectivity of small-hook longlines and monofilament gillnets. Fisheries Research, 58, 25-40. DOI:10.1016/S0165-7836(01)00363-0
  • Soykan, O., İlkyaz, A. T., Metin, G. & Kınacıgil, H. T. (2015). Growth and reproduction of Boops boops, Dentex macrophthalmus, Diplodus vulgaris and Pagellus acarne (Actinopterygii: Perciformes: Sparidae) from East-Central Aegean Sea, Turkey. Acta Ichthyologica et Piscatoria, 45, 39-55. DOI:10.3750/AIP2015.45.1.05
  • STECF, (2015). Landing Obligation - Part 6 (Fisheries targeting demersal species in the Mediterranean Sea) (STECF-15-19). Publications Office of the European Union, EUR 27600 EN, JRC 98678, 268 p.
  • Tokaç, A., Herrmann, B., Gökçe, G., Krag, L. A., Nezhad, D. S., Lök, A., Kaykaç, H., Aydın, C. & Ulaş, A. (2016). Understanding the size selectivity of red mullet (Mullus barbatus) in Mediterranean trawl codends: A study based on fish morphology. Fisheries Research, 17, 81-93. DOI:10.1016/j.fishres.2015.09.002
  • Tosunoğlu, Z., Doğanyılmaz, Y. & Özbilgin, H. (2003a). 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., Doğanyılmaz, Y. & Özbilgin, H. (2003b). Determination of the appropriate hanging ratios to ease the escape of juvenile red mullet (Mullus barbatus L., 1758) and annular sea bream (Diplodus annularis L., 1758) from trawl cod-end. Turkish Journal of Veterinary and Animal Sciences, 27, 1193-1199.
  • Tosunoğlu, Z., Aydın, C., Metin, G., Kaykaç, M.H. & Düzbastılar, F. O. (2018a). Researches on Izmir Bay (Aegean Sea, Turkey) purse seine fishery (in Turkish). Ege University Scientific Research Project Coordination Unit, Project No: 2017/SUF/002, 75 p (Unpublished).
  • Tosunoğlu, Z., Karakuzu, R. O., Gökçe, G. & Kaykaç, M. H. (2018b). Fish morphology and barrier trap bar spacing in lagoon fisheries along the Aegean Coast of Turkey. Mediterranean Fisheries and Aquaculture Research, 1, 49-56.
  • Tosunoğlu, Z., Düzbastılar, F. O., Kaykaç, M. H., Aydın, C., Metin, G. & Güleç, Ö. (2020). Effect of Sorting Grid System on Izmir Bay Purse Seine Fishery: Species-Size Selectivity and Survival Rates (in Turkish). TUBITAK 118O317 Final Report, Ankara, 112 p (Unpublished).
  • Zar, J. H. (1999). Biostatistical analysis. 4 th ed. New Jersey, NJ, USA: Prentice- Hall, Upper Saddle River, New Jersey.

Retention probability of purse seine grating sieve based on fish morphology

Year 2021, Volume 38, Issue 2, 173 - 180, 15.06.2021
https://doi.org/10.12714/egejfas.38.2.06

Abstract



The retention-releasing patterns of the double-grid grating sieve placed on the deck of the purse seiners were revealed for four case species (Sardina pilchardus, Sardinella aurita, Engraulis encrasicolus and Boops boops) using a simulated data predicted from total length (TL) – maximum height (Hmax) and TL – maximum width (Wmax) regressions. To calculate these relationships, samples were collected during commercial purse seine operations between 3 April 2017 and 21 March 2018 in Izmir Bay, Aegean Sea (Turkey). Optimal Bar Spacing (OBS) values corresponding to minimum landing sizes or the length at first maturity were calculated separately for each species. OBS values were found 10.97 mm for sardine (Sardina pilchardus), 11.29 mm for round sardine (Sardinella aurita), 7.78 mm for anchovy (Engraulis encrasicolus) and 17.89 mm for bogue (Boops boops). The bar spacing regulations may constitute a promising management measure to release undersized fish for the purse seine fishery in the Aegean Sea.



References

  • Anonymous. (2020). Notification 5/1. The commercial fish catching regulations in 2020-2024 fishing period. Republic of Turkey Ministry of Agriculture and Forestry, General Directorate of Fisheries and Aquaculture, Ankara (in Turkish).
  • Armstrong, D. W., Ferro, R. S. T., Maclennan, D. N. & S. A. (1990). Gear selectivity and the conservation of fish. Journal of Fish Biology, 37, 261-262. DOI:10.1111/j.1095-8649.1990.tb05060.x
  • Ben-Yami, M. (1994). Purse seining manual. Oxford, UK: A Division of Blackwell Scientific Publications Ltd.
  • Brčić, J., Herrmann, B. & Sala, A. (2018a). Predictive models for codend size selectivity for four commercially important species in the Mediterranean bottom trawl fishery in spring and summer: Effects of codend type and catch size. PLoS One, 13(10), e0206044, DOI:10.1371/journal.pone.0206044
  • Brčić, J., Herrmann, B., Mašanović, M., Šifner, S.K. & Škeljo, F. (2018b). CREELSELECT - A method for determining the optimal creel mesh: Case study on Norway lobster (Nephrops norvegicus) fishery in the Mediterranean Sea. Fisheries Research, 204, 433-440. DOI:1016/j.fishres.2018.03.020
  • Cihangir, B. & Ünlüoğlu, A. (2015). Status of small pelagic fishes in the Aegean Sea. In T. Katağan, A. Tokaç, Ş. Beşiktepe, & B. Öztürk B (Ed.), The Aegean Sea marine biodiversity, fisheries, conservation and governance (pp. 303-323). Turkish Marine Research Foundation (TUDAV).
  • Efanov, S. F., Istomin, I.G. & Delmatov, A. A. (1987). Influence of the form of fish body and mesh on selective properties of trawls. ICES C.M. 13.
  • FAO, (2020). FAO Yearbook. Fishery and Aquaculture Statistics 2018. http://www.fao.org/documents/card/en/c/cb1213t, DOI: 10.4060/cb1213t
  • Herrmann, B., Larsen, R.B., Sistiaga, M.B., Madsen, N., Aarsæther, K.G., Grimaldo, E. & Ingolfsson, O. (2016). Predicting size selection of cod (Gadus morhua) in square mesh codends for demersal seining: simulation-based approach. Fisheries Research, 184, 36-46. DOI: 10.1016/j.fishres.2015.07.015
  • Hovgard, H. & Lassen, H. (2000). Manual on estimation of selectivity for gillnet and longline gears in abundance surveys. FAO Fisheries Technical Paper No. 397, 84 pp.
  • Lucchetti, A., Sala, A., Kholeif, S. & Notti, E. (2015). Towards sustainable fisheries management. Nova Science Publishers, Inc., New York, 276 pp.
  • Matsushita, Y. & Ali, R. (1997). Investigation of trawl landings for the purpose of reducing the capture of non-target species and sizes of fish. Fisheries Research, 29, 133-143. DOI: 10.1016/S0165-7836(96)00534-6
  • Mendes, B., Fonseca, P. & Campos, A. (2006). Relationships between opercula girth, maximum girth and total length of fish species caught in gillnet and trammel net selectivity surveys off the Portuguese coast. Journal of Applied Ichthyology, 22, 209-213. DOI: 10.1111/j.1439-0426.2006.00734.x
  • Misund, O. A. & Beltestad, A. K. (1994). Size selection of mackerel and saithe in purse seine. ICES CM, 1994/B:28.
  • Sechin, Y. T. (1969). A mathematical model for the selectivity curve of a gillnet. Rbyn. Khoz., 45, 56-58.
  • Stergiou, K. I. & Erzini, K. (2002). Comparative fixed gear studies in the Cyclades (Aegean Sea): Size selectivity of small-hook longlines and monofilament gillnets. Fisheries Research, 58, 25-40. DOI:10.1016/S0165-7836(01)00363-0
  • Soykan, O., İlkyaz, A. T., Metin, G. & Kınacıgil, H. T. (2015). Growth and reproduction of Boops boops, Dentex macrophthalmus, Diplodus vulgaris and Pagellus acarne (Actinopterygii: Perciformes: Sparidae) from East-Central Aegean Sea, Turkey. Acta Ichthyologica et Piscatoria, 45, 39-55. DOI:10.3750/AIP2015.45.1.05
  • STECF, (2015). Landing Obligation - Part 6 (Fisheries targeting demersal species in the Mediterranean Sea) (STECF-15-19). Publications Office of the European Union, EUR 27600 EN, JRC 98678, 268 p.
  • Tokaç, A., Herrmann, B., Gökçe, G., Krag, L. A., Nezhad, D. S., Lök, A., Kaykaç, H., Aydın, C. & Ulaş, A. (2016). Understanding the size selectivity of red mullet (Mullus barbatus) in Mediterranean trawl codends: A study based on fish morphology. Fisheries Research, 17, 81-93. DOI:10.1016/j.fishres.2015.09.002
  • Tosunoğlu, Z., Doğanyılmaz, Y. & Özbilgin, H. (2003a). 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., Doğanyılmaz, Y. & Özbilgin, H. (2003b). Determination of the appropriate hanging ratios to ease the escape of juvenile red mullet (Mullus barbatus L., 1758) and annular sea bream (Diplodus annularis L., 1758) from trawl cod-end. Turkish Journal of Veterinary and Animal Sciences, 27, 1193-1199.
  • Tosunoğlu, Z., Aydın, C., Metin, G., Kaykaç, M.H. & Düzbastılar, F. O. (2018a). Researches on Izmir Bay (Aegean Sea, Turkey) purse seine fishery (in Turkish). Ege University Scientific Research Project Coordination Unit, Project No: 2017/SUF/002, 75 p (Unpublished).
  • Tosunoğlu, Z., Karakuzu, R. O., Gökçe, G. & Kaykaç, M. H. (2018b). Fish morphology and barrier trap bar spacing in lagoon fisheries along the Aegean Coast of Turkey. Mediterranean Fisheries and Aquaculture Research, 1, 49-56.
  • Tosunoğlu, Z., Düzbastılar, F. O., Kaykaç, M. H., Aydın, C., Metin, G. & Güleç, Ö. (2020). Effect of Sorting Grid System on Izmir Bay Purse Seine Fishery: Species-Size Selectivity and Survival Rates (in Turkish). TUBITAK 118O317 Final Report, Ankara, 112 p (Unpublished).
  • Zar, J. H. (1999). Biostatistical analysis. 4 th ed. New Jersey, NJ, USA: Prentice- Hall, Upper Saddle River, New Jersey.

Details

Primary Language English
Subjects Fisheries
Journal Section Articles
Authors

Zafer TOSUNOĞLU
EGE ÜNİVERSİTESİ
0000-0002-1168-9611
Türkiye


Sinan MAVRUK (Primary Author)
ÇUKUROVA ÜNİVERSİTESİ
0000-0003-1958-0634
Türkiye


Nazlı KASAPOĞLU
Central Fisheries Research Institute
0000-0001-5526-778X
Türkiye

Supporting Institution Ege University Scientific Research Project Coordination Unit; Ministry of Agriculture and Forestry, General Directorate Agriculture Research and Policies
Project Number 2017/SUF/002; TAGEM/HAYSUD/2015/A11/P02/8
Thanks The present study was funded by the Ege University Scientific Research Project Coordination Unit (Project No. 2017/SUF/002) and Ministry of Agriculture and Forestry, General Directorate Agriculture Research and Policies (Grant number: TAGEM/HAYSUD/2015/A11/P02/8). The authors would like to thank the captain and crew of purse seiner Afala and also researchers involved in the projects.
Publication Date June 15, 2021
Application Date October 28, 2020
Acceptance Date January 21, 2021
Published in Issue Year 2021, Volume 38, Issue 2

Cite

APA Tosunoğlu, Z. , Mavruk, S. & Kasapoğlu, N. (2021). Retention probability of purse seine grating sieve based on fish morphology . Ege Journal of Fisheries and Aquatic Sciences , 38 (2) , 173-180 . DOI: 10.12714/egejfas.38.2.06