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Determination of Size Selectivity of Traps for Blue Crab (Callinectes sapidus Rathbun, 1896) in the Mediterranean Sea

Year 2015, Volume: 21 Issue: 2, 256 - 261, 11.03.2015
https://doi.org/10.15832/tbd.50094

Abstract

This study investigates the effects of trap selectivity of various mesh size on escape success of the blue crab (Callinectes sapidus). The study was carried out Çamlık Lagoon of Yumurtalık Gulf in the Mediterranean Sea and total of 1051 blue crabs were caught by rectangular baited trap. Using traps constructed with 30, 35, 40, 45 and 50 mm square mesh the proportion of crabs escaping through each mesh size was measured for each half centimetre carapace width (CW) class. A logistic model was fitted to the size frequency data of the retained and escaped blue crabs for each mesh size in the experiment. L50 and selection range (SR) for the 30, 35, 40, 45 and 50 mm (bar length) square meshes tested in this study was 8.47 cm and 0.85 cm; 9.31 cm and 0.39 cm; 10.40 cm and 0.31 cm; 11.72 cm and 1.17 cm; 13.17 cm and 0.89 cm respectively. The 50 mm square mesh of the trap showed relatively better selectivity considering the size at 50% sexual maturity of blue crab Callinectes sapidus, and the high rate of immature escapers

References

  • Atar H H, Ölmez M, Bekcan S & Seçer S (2001). Comparison of three different traps for catching blue crab (Callinectes sapidus Rathbun, 1896) in Beymelek lagoon. Turkish Journal of Veterinary & Animal Sciences 26: 1145-1150
  • Atar H H & Seçer S (2003). Width/length-weight relationships of the blue crab (Callinectes sapidus Rathbun, 1896) population living in Beymelek Lagoon Lake. Turkish Journal of Veterinary & Animal Sciences 27: 443-447
  • Enzenross R, Enzenross L & Bingel F (1997). Occurrence of blue crab, Callinectes sapidus (Rathbun 1896) (Crustacea, Brachyura) on the Turkish Mediterranean and the adjacent coast and its size distribution in the Bay of İskenderun. Turkish Journal Zoology 21: 113- 122
  • Gökçe G, Ergüden D, Sangün L, Çekiç M & Alagöz S (2006). Width/length-weight relationships of the blue crab (Callinectes sapidus, Rathbun 1896) population living in Çamlık Lagoon lake (Yumurtalık). Pakistan Journal of Biological Science 9: 1460-1464
  • Gökçe G, Çekiç M, Metin C & Özbilgin H (2007). Size selectivity of square mesh barriers for Callinectes sapidus (Rathbun, 1896) (Brachyura, Portunidae). Crustaceana 80(3): 277-284
  • Guillory V & Prejean P (1997). Blue crab, Callinectes sapidus, trap selectivity studies: mesh size. Marine Fisheries Review 59: 29-31
  • Helser T E & Khan D M (2001). Stock assessment of Delaware Bay blue crab (Callinectes sapidus) for 2001. Department of Natural Resources & Environmental Control, Delaware Division of Fish and Wildlife Report: 1-41
  • Millar R B (1992). Estimating the size-selectivity of fishing gear by conditioning on the total catch. The 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
  • TFG (2012). Turkish Fisheries Regulations, Number 3/1(2012-65): 1-112
  • Tokai T (1997). Maximum likelihood parameter estimates of a mesh selectivity logistic model through SOLVER on MS-Excel. Bulletin of Japan Fisheries Oceanography 61: 288-298
  • Treble R J, Millar R B & Walker T I (1998). Size-selectivity of lobster pots with escape-gaps: application of the SELECT method to the southern rock lobster (Jasus edwardsii) fishery in Victoria, Australia. Fisheries Research 34: 289−305
  • Tureli C (1999). Aspects of the biology of blue crab (Callinectes sapidus Rathbun, 1896) in İskenderun Bay (Turkey). PhD thesis, Department of Fisheries Institute of Natural and Applied Sciences University of Çukurova. (Unpublished)

Akdenizde Mavi Yengeç (Callinectes sapidus Rathbun, 1896) Tuzaklarının Boy Seçiciliğinin Belirlenmesi

Year 2015, Volume: 21 Issue: 2, 256 - 261, 11.03.2015
https://doi.org/10.15832/tbd.50094

Abstract

Bu çalışmada mavi yengeç (Callinectes sapidus)’in tuzaktan kaçma başarısı üzerinde çeşitli göz açıklığına sahip tuzakların seçicilik etkileri incelenmiştir. Araştırma Akdeniz’de Yumurtalık körfezi, Çamlık Lagününde yürütülmüş dikdörtgen şekilli yemli tuzaklar kullanılarak toplam 1051 adet mavi yengeç yakalanmıştır. 30, 35, 40, 45 ve 50 mm kare gözlü ağ ile donatılmış tuzaklarla her bir tuzaktan kaçan yengeçlerin oranı 0.5 cm lik karapaks genişlik (CW) sınıfında ölçülerek tespit edilmiştir. Denemede her göz açıklığı için tuzaklarda kalan ve kaçan mavi yengeçlerin boy frekans verilerine göre lojistik bir model kullanılmıştır. Araştırmada kullanılan 30, 35, 40, 45 ve 50 mm’lik kare gözlü ağların % 50 seçicilik boyu (L50) ve seçicilik aralığı (SR) sırasıyla 8.47 cm ve 0.85 cm; 9.31 cm ve 0.39 cm; 10.40 cm ve 0.31 cm; 11.72 cm ve 1.17 cm; 13.17 cm ve 0.89 cm olarak belirlenmiştir. Tuzaktan kaçan ergin olmayan mavi yengeçlerin yüksek oranı ve % 50 cinsi olgunluk boyu dikkate alındığında 50 mm’lik kare gözlü ağa sahip tuzak, diğer tuzaklara göre daha yüksek seçicilik göstermiştir.

References

  • Atar H H, Ölmez M, Bekcan S & Seçer S (2001). Comparison of three different traps for catching blue crab (Callinectes sapidus Rathbun, 1896) in Beymelek lagoon. Turkish Journal of Veterinary & Animal Sciences 26: 1145-1150
  • Atar H H & Seçer S (2003). Width/length-weight relationships of the blue crab (Callinectes sapidus Rathbun, 1896) population living in Beymelek Lagoon Lake. Turkish Journal of Veterinary & Animal Sciences 27: 443-447
  • Enzenross R, Enzenross L & Bingel F (1997). Occurrence of blue crab, Callinectes sapidus (Rathbun 1896) (Crustacea, Brachyura) on the Turkish Mediterranean and the adjacent coast and its size distribution in the Bay of İskenderun. Turkish Journal Zoology 21: 113- 122
  • Gökçe G, Ergüden D, Sangün L, Çekiç M & Alagöz S (2006). Width/length-weight relationships of the blue crab (Callinectes sapidus, Rathbun 1896) population living in Çamlık Lagoon lake (Yumurtalık). Pakistan Journal of Biological Science 9: 1460-1464
  • Gökçe G, Çekiç M, Metin C & Özbilgin H (2007). Size selectivity of square mesh barriers for Callinectes sapidus (Rathbun, 1896) (Brachyura, Portunidae). Crustaceana 80(3): 277-284
  • Guillory V & Prejean P (1997). Blue crab, Callinectes sapidus, trap selectivity studies: mesh size. Marine Fisheries Review 59: 29-31
  • Helser T E & Khan D M (2001). Stock assessment of Delaware Bay blue crab (Callinectes sapidus) for 2001. Department of Natural Resources & Environmental Control, Delaware Division of Fish and Wildlife Report: 1-41
  • Millar R B (1992). Estimating the size-selectivity of fishing gear by conditioning on the total catch. The 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
  • TFG (2012). Turkish Fisheries Regulations, Number 3/1(2012-65): 1-112
  • Tokai T (1997). Maximum likelihood parameter estimates of a mesh selectivity logistic model through SOLVER on MS-Excel. Bulletin of Japan Fisheries Oceanography 61: 288-298
  • Treble R J, Millar R B & Walker T I (1998). Size-selectivity of lobster pots with escape-gaps: application of the SELECT method to the southern rock lobster (Jasus edwardsii) fishery in Victoria, Australia. Fisheries Research 34: 289−305
  • Tureli C (1999). Aspects of the biology of blue crab (Callinectes sapidus Rathbun, 1896) in İskenderun Bay (Turkey). PhD thesis, Department of Fisheries Institute of Natural and Applied Sciences University of Çukurova. (Unpublished)
There are 13 citations in total.

Details

Primary Language English
Journal Section Makaleler
Authors

Süleyman Özdemir

Gökhan Gökçe

Mustafa Çekiç This is me

Publication Date March 11, 2015
Submission Date December 17, 2013
Published in Issue Year 2015 Volume: 21 Issue: 2

Cite

APA Özdemir, S., Gökçe, G., & Çekiç, M. (2015). Determination of Size Selectivity of Traps for Blue Crab (Callinectes sapidus Rathbun, 1896) in the Mediterranean Sea. Journal of Agricultural Sciences, 21(2), 256-261. https://doi.org/10.15832/tbd.50094

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