CPUE comparison of traditional crayfish fyke net rigged with knotted net and alternatively knotless net

Dr. Mehmet Cilbiz; Rahmi Uysal; Abdulkadir Yağcı; Süleyman Oğuz Korkut; Kadir Çapkın; Mehmet Cesur

doi:10.12714/egejfas.38.1.09

TR EN

Düğümlü ağdan donanmış geleneksel kerevit pinteri ile alternatif olarak düğümsüz ağdan donanmış pinterlerin CPUE karşılaştırması

Öz

Bu çalışmada, Türkiye’de kerevit (Pontastacus leptodactylus, Eschscholtz, 1823) avcılığında kullanılmakta olan 210d/6 numara düğümlü ağdan donanmış geleneksel ağ materyali yerine, 210d//12 numara ip kalınlığındaki düğümsüz ağdan donanmış olan kerevit pinterinin verim ve mukavemetinin karşılaştırılması amaçlanmıştır. Çalışma Haziran 2017 ile Mayıs 2018 döneminde aylık olarak yürütülmüştür. Çalışmada 150 adet klasik, 150 adette alternatif ağdan donanmış olan toplam 300 adet pinter kullanılmıştır. Avlanan kerevitler, avlandıkları pinterlere göre ayrılmış ağırlık ve boy ölçümleri yapılmıştır. 1465’i alternatif pinter, 2044’ü de geleneksel pinter ile avlanmış toplam 3509 adet kerevit yakalanmıştır. Operasyon başına ortalama CPUE değeri 10.93 (g/pinter/gün) ile 281.14 (g/pinter/gün) arasında değişim göstermiştir. Geleneksel takımın ortalama CPUE değeri 98.34 (g/pinter/gün) bulunmuş iken alternatif takımınki ise 79.46 (g/pinter/gün) olarak bulunmuş olup; ortalama CPUE değerleri arasında istatistiki farklılık bulunmamıştır (p>0.05). Geleneksel pinter ağının kopma direnci değeri ortalama (±SE) 10.43±0.27 kg; 210d/12 düğümsüz ağın ki ise 14.50±0.91 kg olarak belirlenmiştir (p<0.05). Her ne kadar yüksek mukavemete sahip olsa da alternatif pinterin CPUE’unun geleneksel takıma göre %19.20 oranında düşük olması nedeniyle, kerevit avcılığında kullanımının daha verimsiz olacağı düşünülmektedir.

Anahtar Kelimeler

CPUE comparison of traditional crayfish fyke net rigged with knotted net and alternatively knotless net

Abstract

In this study, it is aimed to compare the yield and strength of the crayfish fyke rigged with knotless net with 210d/12 rope thickness with those of the traditional net material rigged with 210d/6 knotted net which is widely used in Turkey in fishing crayfish (Pontastacus leptodactylus, Eschscholtz, 1823). The study was carried out on a monthly basis between June 2017 and May 2018. In the study, a total of 300 fyke nets, equipped with 150 classical and 150 alternative nets, were used. The caught crayfishes were measured and weighted according to the fyke net they were caught in. A total of 3509 crayfish were caught, 1465 of which were caught with alternative fyke net and 2044 with traditional fyke net. Average CPUE value ranged from 10.93 (g/fyke net/day) to 281.14 (g/fyke net/day) for per fishing operation. Average CPUE value of the traditional gear was found to be 98.34 (g/fyke net/day) , while that of the alternative gear was determined as 79.46 (g/fyke net/day), and no statistically significant difference was found between average CPUE values (p>0.05). Average strength value of the traditional fyke net was determined as (± SE) 10.43 ± 0.27 kg, while that value in 210d / 12 knotless net was identified as 14.50 ± 0.91 kg (p<0.05). Although it has high strength, since the CPUE value of the alternative fyke net is lower by 19.20% compared to the traditional gear, it is believed that its use in crayfish fishing will not be profitable.

Keywords

Supporting Institution

Republic of Turkey, Ministry of Agriculture and Forest, General Directorate of Agricultural Research and Policies

Project Number

TAGEM/HAYSUD/2017/A11/P-02/1

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Details

Primary Language

English

Subjects

Fisheries Management

Journal Section

Research Article

Authors

Dr. Mehmet Cilbiz ^*
0000-0002-7686-7570
Türkiye

Rahmi Uysal
0000-0002-7342-9380
Türkiye

Abdulkadir Yağcı
0000-0002-7897-1734
Türkiye

Süleyman Oğuz Korkut
0000-0002-6576-3557
Türkiye

Kadir Çapkın
0000-0002-6822-6896
Türkiye

Mehmet Cesur
0000-0002-7482-6353
Türkiye

Publication Date

March 15, 2021

Submission Date

March 13, 2020

Acceptance Date

November 26, 2020

Published in Issue

Year 2021 Volume: 38 Number: 1

DOI

https://doi.org/10.12714/egejfas.38.1.09

IZ

https://izlik.org/JA53WP28PY

Cite

RIS / Bibtex

APA

Cilbiz, D. M., Uysal, R., Yağcı, A., Korkut, S. O., Çapkın, K., & Cesur, M. (2021). CPUE comparison of traditional crayfish fyke net rigged with knotted net and alternatively knotless net. Ege Journal of Fisheries and Aquatic Sciences, 38(1), 79-86. https://doi.org/10.12714/egejfas.38.1.09

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