Spatio-temporal Distribution and Population Dynamics of the Red Mullet Mullus barbatus Linnaeus, 1758 from the South-east Black Sea

Hatice Onay; Göktuğ Dalgıç; Yusuf Ceylan

doi:10.35229/jaes.1378446

TR EN

Güneydoğu Karadeniz’ de Barbunya (Mullus barbatus Linnaeus, 1758) balığının Mekansal-Zamansal Dağılımı ve Popülasyon Dinamiği

Öz

Mart 2017 ile Nisan 2018 arasında Karadeniz'in Güneydoğu sahilinden toplamda 2930 Mullus barbatus bireyi büyüme, ölüm oranları ve derinlik ile mevsime göre belirlenen dağılımları açısından incelendi. M. barbatus kış aylarında 30-45 m derinliklerinde daha yoğundur. Toplam uzunluk-ağırlık ilişkisi W=0,005L3,2344 olarak belirlendi. Tüm bireyler için Von Bertalanffy büyüme parametreleri L∞=28,19 cm, K=0,16 yıl-1, t0= -0,144 yıl olarak hesaplandı. Maksimum yaş 5 yaştır. Yüzde elli olgunluğa ulaşma toplam uzunluğu erkekler için 11,63 cm, dişiler için ise 11,68 cm olarak tahmin edildi. Barbunya balığı için doğal ölüm, toplam ölüm ve avcılık ölüm oranları üssi katsayıları sırasıyla 0,33 yıl-1, 1.001 yıl-1 ve 0,67 yıl-1 olarak hesaplandı. Popülasyonun işletme oranı 0,66 yıl-1 olarak hesaplandı. İşletme oranı 0,5'in üzerinde olması, stok üzerinde yüksek bir av baskısı olduğunu yansıtabilir.

Anahtar Kelimeler

Balık popülasyonu , Karadeniz , İşletme oranı , Mullidae , Mortalite

Spatio-temporal Distribution and Population Dynamics of the Red Mullet Mullus barbatus Linnaeus, 1758 from the South-east Black Sea

Abstract

A total of 2930 Mullus barbatus individuals collected from the Southeastern Black Sea coast between March 2017 and April 2018 were investigated regarding growth, mortality rates and the distribution determined by depth and season. M. barbatus is abundant along of 30-45 m depth in winter. Total length-weight relationship was determined as W=0.005L3.2344. Von Bertalanffy growth parameters for all individuals were calculated as L∞=28.19 cm, K=0.16 years-1, t0=-0.144 years. The maximum age was 5 years. The total length at 50% maturity was estimated as 11.63 cm in males and 11.68 cm in females. Exponential coefficients of natural mortality, total mortality, and fishing mortality rate of red mullet are estimated as 0.33 year-1, 1.001 year-1 and 0.67 year-1, respectively. The exploitation rate of population was calculated as 0.66 year-1. The fact that exploitation rate is above 0.5 may reflect a high fishing pressure on stock.

Keywords

Black Sea , Exploitation rate , Fish population , Mullidae , Mortality

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Details

Primary Language

English

Subjects

Fish Biology

Journal Section

Research Article

Authors

Hatice Onay ^*
0000-0003-3463-7360
Türkiye

Göktuğ Dalgıç
0000-0001-8619-6160
Türkiye

Yusuf Ceylan
0000-0002-7513-4957
Türkiye

Early Pub Date

December 25, 2023

Publication Date

December 31, 2023

Submission Date

October 19, 2023

Acceptance Date

December 18, 2023

Published in Issue

Year 2023 Volume: 8 Number: 4

DOI

https://doi.org/10.35229/jaes.1378446

IZ

https://izlik.org/JA29AS86HT

APA

Onay, H., Dalgıç, G., & Ceylan, Y. (2023). Spatio-temporal Distribution and Population Dynamics of the Red Mullet Mullus barbatus Linnaeus, 1758 from the South-east Black Sea. Journal of Anatolian Environmental and Animal Sciences, 8(4), 720-727. https://doi.org/10.35229/jaes.1378446

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EBSCOHost Scilit CABI

JAES/AAS-Journal of Anatolian Environmental and Animal Sciences/Anatolian Academic Sciences&Anadolu Çevre ve Hayvancılık Dergisi/Anadolu Akademik Bilimler-AÇEH/AAS