Estimating gillnet selectivity of Bluefish (Pomatomus saltatrix) by morphology

Akın Türker İlkyaz

doi:10.12714/egejfas.2018.35.1.14

EN TR

Estimating gillnet selectivity of Bluefish (Pomatomus saltatrix) by morphology

Abstract

The dataset of the study consists of total length, fork length, head girth, maximum girth and weight measurements of 136 bluefish. The relationship between the total length and fork length of the product was TL=1.1348×FL-0.8184; the relationship between the total length and weight was W=0.0103×L^2.97. The relationships between the total length and head girth and between the total length and maximum girth of the sample were linear: the relationship of the total length and head girth was G_gill=0.5092×TL-0.0874; the relationship of the total length and maximum girth was G_max=0.5989×TL-0.8540. The statistical relationship between length and girth was used to obtain a theoretical gillnet selectivity equation for the species. In conclusion, a relationship of S(l)=Φ[(C-G_gill)/0.4952]×[1-Φ((C-G_max)/0.4255)] was determined between the stretched size of the mesh used in bluefish fishing and the catch rate. Using this equation, and considering the legal length and length at first maturity, the minimum mesh size of the gillnet for sustainable fishery was determined.

Keywords

Direct estimation,Sechin method,length-girth relationship,length-length relationship,length-weight relationship

Kaynakça

Acarlı, D., Ayaz, A., Özekinci, U. & Öztekin, A., 2013. Gillnet selectivity for bluefish (Pomatamus saltatrix, L. 1766) in Çanakkale Strait, Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 13: 349-353. doi: 10.4194/1303-2712-v13_2_17
Anonymous, 2016. Fisheries regulation for marine and fresh waters for commercial fishery, 2016-2020 fishing period No: 4/1. Ministry of Food, Agriculture and Livestock of Turkey, Protect and Control General Office, Ankara, Turkey.
Bal, H., Yanık, T. & Türker, D., 2015. Length-weight and length-length relationships of the bluefish Pomatomus saltarix (Linnaeus. 1766) population in the south Marmara Sea of Turkey. Alınteri Journal of Agricultural Sciences, 29 (B), 26-33.
Bok, T. D., Gokturk, D., Kahraman, A. E., Alicli, T. Z., Acun, T. & Ates, C., 2011. Length-Weight Relationships of 34 Fish Species from the Sea of Marmara, Turkey. Journal of Animal and Veterinary Advances, 10 (23), 3037-3042.
Ceyhan, T., Akyol, O., Ayaz, A. & Juanes, F., 2007. Age, growth, and reproductive season of bluefish (Pomatomus saltatrix) in the Marmara region, Turkey. ICES Journal of Marine Science, 64: 531-536. doi: 10.1093/icesjms/fsm026
Deveciyan, K., 1915. Fish and Fisheries. Düyun-i Umumiye-i Osmaniye Varidat-ı Muhassasa İdare-i Merkezi Matbaası, İstanbul, Turkey, 24-28.
Erkoyuncu, İ., Erdem, M., Samsun, O, Özdamar, E. & Kaya, Y., 1994. A research on the determination of meat yields, chemical composition and weight- length relationship of some fish species caught in the Black Sea. İstanbul University Journal of Fisheries & Aquatic Sciences, 8(1-2), 181-191.
FAO, 2016. Food and Agriculture - FishStatJ - software for fishery statistical time series. http://www.fao.org/fishery/statistics/software/fishstatj/en, (11/ 2016).

Froese, R. & Pauly, D., 2016. FishBase. World Wide Web electronic publication, http://www.fishbase.org, version (06/2016).
Froese, R., 2006. Cube law, condition factor and weight-length relationships: history, meta-analysis and recommendations. Journal of Applied Ichthyology, 22, 241-253. doi: 10.1111/j.1439-0426.2006.00805.x
Haimovici, M. & Krug, L. C., 1996. Life history and fishery of the enchova Pomatomus saltatrix in southern Brazil. Marine and Freshwater Research, 47, 357-363. doi: 10.1071/MF9960357
Hoşsucu, H., 2000. Fisheries III (Fishing methods). Ege University, Faculty of Fisheries, Publication No 59, Bornova/İzmir, Turkey.
Hovgård, H. & Lassen, H., 2000. Manual on estimation of selectivity for gillnet and longline gears in abundance surveys. FAO Fisheries Technical Paper No: 397, Rome, 84P.
İlkyaz, A. T., 2005. Determination of Gillnet Size-Selectivity by the Direct Estimation Method. PhD Thesis Supervisor: Prof. Dr. H. Tuncay Kınacıgil, Ege University Institute of Science, Bornova, İzmir, Turkey, 131P.
İlkyaz, A. T., Metin, G., Soykan, O. & Kınacıgil, H. T., 2010. Growth and Reproduction of Large-Scaled Gurnard (Lepidotrigla cavillone Lacepède, 1801) (Triglidae) in the Central Aegean Sea, Eastern Mediterranean. Turkish Journal of Zoology, 34(4), 471-478.
Kailola, P. J., Williams, M. J., Stewart, P. C., Reichelt, R. E., McNee, A. & Grieve, C., 1993. Australian Fisheries Resources. Bureau of Resource Sciences, Canberra, Australia, 422 P.
Kalaycı, F., Samsun, N., Bilgin, B. & Samsun, O., 2007. Length-Weight Relationship of 10 Fish Species Caught by Bottom Trawl and Midwater Trawl from the Middle Black Sea, Turkey. Turkish Journal of Fisheries and Aquatic Sciences, 7, 33-36.
Kawamura, G., 1972. Gillnet mesh selectivity curve developed from length-girth relationship. Bulletin of the Japanese Society for the Science of Fish, 38, 1119-1127. doi: 10.2331/suisan.38.1119
Lucena, F. M., O’Brien, C.M. & Reis, E.G., 2000. The effect of fish morphology and behaviour on the efficiency of gill nets, their selectivity and by-catch: two examples from southern Brazil. ICES Efficiency, Selectivity and Impacts of Passive Fishing Gears, CM 2000/J:11.
Reis, E. G. & Pawson, M. G., 1999. Fish morphology and estimating selectivity by gillnets. Fisheries Research, 39, 263-273. doi: 10.1016/S0165-7836(98)00199-4
Ricker, W. E., 1973. Linear regressions in fishery research. Journal of the Fisheries Research Board of Canada, 30, 409-434. doi: 10.1139/f73-072
Safran, P., 1992. Theoretical analysis of the weight-length relationship in fish juveniles. Marine Biology, 112, 545-551. doi: 10.1007/BF00346171
Salerno, D.J., Burnett, J., & Ibara, R.M., 2001. Age, growth, maturity, and spatial distribution of Bluefish, Pomatomus saltatrix (Linnaeus), off the Northeast Coast of the United States, 1985-96. Journal of Northwest Atlantic Fishery Science, 29, 31-39. doi: 10.2960/J.v29.a3
Sechin, Y. T., 1969. A mathematical model for the selection curve of a gillnet. Rybnoe Khoziaistvo, 45 (9), 56-58.
Sümer, Ç., Özdemir, S. & Erdem, Y., 2010. Determination of Selectivity Monoflament and Multiflament Gillnets with Different Mesh Size for bluefish (Pomatomus saltatrix L., 1766). Ege University Journal of Fisheries & Aquatic Sciences, 3, 121-124.
Trent, L. & Pristas, P. J., 1977. Selectivity of gill nets on estuarine and coastal fishes from St. Andrew Bay, Florida. Fishery Bulletin, 75, 185-198.
Türgan, G., 1959. About biology of Pomatomus saltatrix L. (Bluefish). Hidrobiology Magazine, 5, 144-180.
van der Elst, R., 1976. The biology of the Elf, Pomatomus saltatrix (Linnaeus), in the coastal waters of Natal. Game fish of the East Coast of South Africa I. Oceanographic Research Institute, Investigation Report No: 4-4, 1-59.
van der Elst, R.P. & Adkin, F., 1991. Marine linefish: Priority species and research objectives in southern Africa. Oceanographic Research Institute, Special publication No: 1, 132p.
Whitehead, P. J. P., Mauchot, M. L., Hureau, J. C., Nielsen, J. & Tortonese, E., 1986. Fish of the North-eastern Atlantic and the Mediterranean. Vol. II: UNESCO.
Wilk, S. J., 1977. Biological and fisheries data on Bluefish, Pomatomus saltatrix (Linnaeus). National Marine Fisheries Service, Northeast Fisheries Center, Sandy Hook Laboratory Technical Series Reports 11, 56p.

Ayrıntılar

Birincil Dil

İngilizce

Konular

-

Bölüm

Araştırma Makalesi

Yazarlar

Akın Türker İlkyaz ^*
0000-0003-2650-3223
Türkiye

Yayımlanma Tarihi

15 Mart 2018

Gönderilme Tarihi

9 Ocak 2018

Kabul Tarihi

5 Mart 2018

Yayımlandığı Sayı

Yıl 2018 Cilt: 35 Sayı: 1

DOI

https://doi.org/10.12714/egejfas.2018.35.1.14

IZ

https://izlik.org/JA37BZ99EM

Kaynak Göster

RIS / Bibtex

APA

İlkyaz, A. T. (2018). Estimating gillnet selectivity of Bluefish (Pomatomus saltatrix) by morphology. Ege Journal of Fisheries and Aquatic Sciences, 35(1), 89-94. https://doi.org/10.12714/egejfas.2018.35.1.14