Selectivity of monofilament gillnets with different mesh sizes used in fishing of pearl mullet, (Alburnus tarichi (Güldenstädt, 1814)) in Lake Van

Mustafa Akkuş; Adem Sezai Bozaoğlu; Ahmet Raif Eryaşar

doi:10.12714/egejfas.40.1.08

EN TR

Selectivity of monofilament gillnets with different mesh sizes used in fishing of pearl mullet, (Alburnus tarichi (Güldenstädt, 1814)) in Lake Van

Abstract

This study was carried out between September 2020 and March 2021 to determine the selectivity of monofilament gillnets used in pearl mullet, Alburnus tarichi (Güldenstädt, 1814), fishing in Lake Van. The SELECT method was applied to determine the selectivity. The best model for the selectivity of monofilament gillnets used in pearl mullet fishing was determined as the log-normal model. The optimum catch lengths of monofilament gillnets with 20, 22 and 24 mm mesh sizes were calculated as 21.69 cm, 23.84 cm and 26.01 cm, respectively. Catch per unit effort was determined as 10.03 kg/90 m/day at 20 mm, 15.91 kg/90 m/day at 22 mm and 12.99 kg/90 m/day at 24 mm. The average catch per unit effort was determined as 151 unit/90 m/day at 20 mm, 151 unit/90 m/day at 22 mm, and 110 unit/90 m/day at 24 mm. According to the results of optimum catch length and daily average catch per unit effort, using monofilament gillnets with 22 mm mesh size was more convenient for sustainable pearl mullet fishing in Lake Van.

Keywords

Van Gölü İnci Kefali (Alburnus tarichi (Güldenstädt,1814)) avcılığında kullanılan farklı ağ göz açıklığına sahip monofilament sade uzatma ağlarının seçiciliği

Öz

Bu çalışma, Van Gölü inci kefali, Alburnus tarichi (Güldenstädt, 1814), avcılığında kullanılan monofilament sade uzatma ağlarının seçiciliğinin belirlenmesi amacıyla 2020 Eylül ve 2021 Mart tarihleri arasında gerçekleştirilmiştir. Seçiciliğin belirlenmesinde SELECT metod kullanılmıştır. İnci kefali avcılığında kullanılan monofilament galsama ağlarının seçiciliği için en iyi modelin log-normal modeli olduğu belirlenmiştir. 20, 22 ve 24 mm ağ göz genişliğine sahip monofilament sade uzatma ağlarının optimum yakalama boyları sırasıyla 21,69 cm, 23,84 cm ve 26,01 cm olarak hesaplanmıştır. Birim av verimi 20 mm de 10,03 kg/90 m/gün, 22 mm de 15,91 kg/90 m/gün ve 24 mm de 12,99 kg/90 m/gün olarak tespit edilmiştir. Adet olarak ortalama birim av verimi 20 mm de 151 adet/90 m/gün, 22 mm de 151 adet/90 m/gün ve 24 mm de 110 adet/90 m/gün olarak belirlenmiştir. Optimum yakalama boyu ve günlük ortalama birim av verimi sonuçlarına göre, Van Gölü’nde sürdürülebilir inci kefali avcılığı için 22 mm ağ göz genişliğindeki monofilament galsama uzatma ağlarının kullanılmasının daha uygun olduğu belirlenmiştir.

Anahtar Kelimeler

Supporting Institution

Van Yüzüncü Yıl Üniversitesi Bilimsel Araştırmalar Projeleri Koordinasyon Birimi

Project Number

FHD-2020-8664

Thanks

Projeyi destekleyerek, bu çalışmanın gerçekleşmesini sağlayan Van Yüzüncü Yıl Üniversitesi Bilimsel Araştırmalar Projeleri Koordinasyon Birimi'ne teşekküre ederiz.

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Details

Primary Language

English

Subjects

Fisheries Management

Journal Section

Research Article

Authors

Mustafa Akkuş ^*
0000-0002-8900-9495
Türkiye

Adem Sezai Bozaoğlu
0000-0003-4078-5159
Türkiye

Ahmet Raif Eryaşar
0000-0001-7656-6113
Türkiye

Publication Date

March 15, 2023

Submission Date

November 11, 2022

Acceptance Date

February 10, 2023

Published in Issue

Year 2023 Volume: 40 Number: 1

DOI

https://doi.org/10.12714/egejfas.40.1.08

IZ

https://izlik.org/JA54ET29KR

Cite

RIS / Bibtex

APA

Akkuş, M., Bozaoğlu, A. S., & Eryaşar, A. R. (2023). Selectivity of monofilament gillnets with different mesh sizes used in fishing of pearl mullet, (Alburnus tarichi (Güldenstädt, 1814)) in Lake Van. Ege Journal of Fisheries and Aquatic Sciences, 40(1), 56-61. https://doi.org/10.12714/egejfas.40.1.08