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Journals / Su Ürünleri Dergisi / 2018 / Cilt: 35 - Sayı: 1

Estimating gillnet selectivity of Bluefish (Pomatomus saltatrix) by morphology

Lüferin (Pomatomus saltatrix) morfolojisiyle galsama ağı seçiciliğinin tahmini

Akın Türker İLKYAZ
Pages
89–94
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In conclusion, a relationship of S(l)=Φ[(CGgill)/0.4952]×[1Φ((CGmax)/0.4255)] was determined between the stretched size of the mesh used in bluefish fishing and the catch rate.

📌 3 Key Takeaways

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Objective & Hypothesis:The dataset of the study consists of total length, fork length, head girth, maximum girth and weight measurements of 136 bluefish.
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Key Findings & Data: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×L2.97.
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Conclusion & Impact:In conclusion, a relationship of S(l)=Φ[(CGgill)/0.4952]×[1Φ((CGmax)/0.4255)] was determined between the stretched size of the mesh used in bluefish fishing and the catch rate.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

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×L2.97. 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=0.5092×TL0.0874; the relationship of the total length and maximum girth was Gmax=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Ggill)/0.4952]×[1Φ((CGmax)/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

Özet

Çalışmanın veri setini, 136 adet lüfer balığı üzerinde yapılan; total boy, çatal boy, operkulum çevresi, vücut çevresi ve ağırlık ölçümleri oluşturmaktadır. Türün total boyu ile çatal boyu arasında TL=1,1348×FL?0,8184, total boyu ile ağırlığı arasında ise W=0,0103×L2,97 şeklinde bir ilişki olduğu tespit edilmiştir. Örnekleme ait total boy-operkulum çevresi ve total boy-vücut çevresi arasında ise sırası ile Ggill=0,5092×TL?0,0874 ve Gmax=0,5989×TL?0,8540 şeklinde doğrusal bir ilişkinin olduğu hesaplanmıştır. Boy ile çevre arasında kurulan istatistiksel ilişkiler kullanılarak, türe ait kuramsal uzatma ağı seçicilik denklemi elde edilmiştir. Sonuç olarak, türün avcılığında kullanılabilecek ağın tam göz boyu ile yakalanma oranları arasında S(l)=?[(C?Ggill)/0,4952]×[1??((C?Gmax)/0,4255)] şeklinde bir ilişkinin olduğu tespit edilmiştir. Elde edilen bu denklemden faydalanılarak, türün yasal ve ilk üreme boyları dikkate alınarak, sürdürülebilir bir avcılık için kullanılacak sade uzatma ağının minimum tam göz boyunun ne olması gerektiği belirlenmiştir

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Cite This Article

İLKYAZ, A. T. (2018). Estimating gillnet selectivity of Bluefish (Pomatomus saltatrix) by morphology. Su Ürünleri Dergisi, Cilt: 35 - Sayı: 1, 89–94. https://ajindex.com/articles/310965

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References (7)

  1. 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,
  2. 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.
  3. 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.
  4. 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.
  5. 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).
  6. Froese, R. & Pauly, D., 2016. FishBase. World Wide Web electronic publication, http://www.fishbase.org, version (06/2016).
  7. 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 long