Length-weight relationships, growth parameters, mortality and condition factor of Atlantic bonito (Sarda sarda Bloch, 1793) from the Southern Black Sea

Yaşar Genç; Murat Dağtekin; Nimet Selda Başçınar; Elvan Tercan

Makale detayları

Length-weight relationships, growth parameters, mortality and condition factor of Atlantic bonito (Sarda sarda Bloch, 1793) from the Southern Black Sea

Yazarlar:

Yaşar Genç | Murat Dağtekin | Nimet Selda Başçınar | Elvan Tercan

Yayıncı:

Ordu University

Ana Başlıklar:

Post-Harvest Fisheries Technologies (Incl. Transportation) | Fish Biology | Fisheries Management

Dergi:

Turkish Journal of Maritime and Marine Sciences Vol.11 Issue 1, pp.1-13

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001341389

pISSN:

2564-7016

Anahtar kelimeler:

Özet:

 The small tuna known as the Atlantic bonito Sarda sarda is one of the most important fishery species on the Black Sea coast of Türkiye. In this study, we sought to define some population parameters of Atlantic bonito based on indirect ageing using length frequency distributions. The aim of this study is to provide data that will serve the management of the bonito fishery. For analysis, the ELEFAN routine in the LFDA and FiSAT programs was utilized. During the migration period, we collected 2110 samples from purse seine n1009, gillnet n867 and hand lines n234 fishing in the Black Sea waters of Türkiye. The fork length varied between 13.1 and 60 cm, and the female-to-male ratio was 1:0.79. The length-weight relationships LWRs were calculated W0.0037FL3.3784 and Fultons K:1.010.001. The growth was found to be positive allometric Students t-test, p  0.05. von Bertalanffy Growth Parameters VBGP were computed as L:71.59 cm, K:0.56 year-1, t0:-0.18 year. The seasonal oscillation in growth rate was calculated C: 0.98 and winter point WP: 0.54, growth performance index of Ø: 3.46, natural mortality M: 0.74 yr-1, fishing mortality F: 2.81 yr-1, total mortality Z: 3.55 yr-1 and exploitation coefficient E: 0.79 yr-1. As a result, the exploitation rate of S. sarda in the study area was found to be high.

 The small tuna known as the Atlantic bonito Sarda sarda is one of the most important fishery species on the Black Sea coast of Türkiye. In this study, we sought to define some population parameters of Atlantic bonito based on indirect ageing using length frequency distributions. The aim of this study is to provide data that will serve the management of the bonito fishery. For analysis, the ELEFAN routine in the LFDA and FiSAT programs was utilized. During the migration period, we collected 2110 samples from purse seine n1009, gillnet n867 and hand lines n234 fishing in the Black Sea waters of Türkiye. The fork length varied between 13.1 and 60 cm, and the female-to-male ratio was 1:0.79. The length-weight relationships LWRs were calculated W0.0037FL3.3784 and Fultons K:1.010.001. The growth was found to be positive allometric Students t-test, p  0.05. von Bertalanffy Growth Parameters VBGP were computed as L:71.59 cm, K:0.56 year-1, t0:-0.18 year. The seasonal oscillation in growth rate was calculated C: 0.98 and winter point WP: 0.54, growth performance index of Ø: 3.46, natural mortality M: 0.74 yr-1, fishing mortality F: 2.81 yr-1, total mortality Z: 3.55 yr-1 and exploitation coefficient E: 0.79 yr-1. As a result, the exploitation rate of S. sarda in the study area was found to be high.

 The small tuna known as the Atlantic bonito Sarda sarda is one of the most important fishery species on the Black Sea coast of Türkiye. In this study, we sought to define some population parameters of Atlantic bonito based on indirect ageing using length frequency distributions. The aim of this study is to provide data that will serve the management of the bonito fishery. For analysis, the ELEFAN routine in the LFDA and FiSAT programs was utilized. During the migration period, we collected 2110 samples from purse seine n1009, gillnet n867 and hand lines n234 fishing in the Black Sea waters of Türkiye. The fork length varied between 13.1 and 60 cm, and the female-to-male ratio was 1:0.79. The length-weight relationships LWRs were calculated W0.0037FL3.3784 and Fultons K:1.010.001. The growth was found to be positive allometric Students t-test, p  0.05. von Bertalanffy Growth Parameters VBGP were computed as L:71.59 cm, K:0.56 year-1, t0:-0.18 year. The seasonal oscillation in growth rate was calculated C: 0.98 and winter point WP: 0.54, growth performance index of Ø: 3.46, natural mortality M: 0.74 yr-1, fishing mortality F: 2.81 yr-1, total mortality Z: 3.55 yr-1 and exploitation coefficient E: 0.79 yr-1. As a result, the exploitation rate of S. sarda in the study area was found to be high.

 Atlantik palamudu olarak bilinen küçük orkinoslardan Sarda sarda, Türkiyenin Karadeniz kıyılarının en önemli balıkçılık türlerinden biridir. Bu çalışmada, boy frekans dağılımları kullanılarak boya dayalı olarak palamut balığının bazı popülasyon parametrelerini tanımlamaya çalışıldı. Bu çalışmanın amacı palamut balıkçılığının yönetimine hizmet edecek sonuçlar sağlamaktır. Çalışmada verilerin analizi için LFDA ve FiSAT programlarındaki ELEFAN rutini kullanıldı. Palamut balığının Türkiyenin Karadeniz sularında göçü boyunca gırgır n1009, uzatma ağları n867 ve olta n234 ile avlanan 2110 örnek toplanıldı. Örneklenen bireylerin çatal boyu 13,1 ile 60 cm arasında değişmekte olup, dişierkek oranı 1:0,79dur. Boy-ağırlık ilişkileri LWRs W0,0037FL3,3784 ve Fultons K:1,010,001 olarak hesaplanmıştır. Çalışma sonucunda büyümenin pozitif allometik olduğu bulunmuştur Students t-test, p  0,05. von Bertalanffy Büyüme Parametreleri VBGP L:71,59 cm, K:0,56 yıl-1, t0:-0,18 yıl olarak hesaplanmıştır. Büyüme oranındaki mevsimsel salınım C: 0,98 ve kış noktası WP: 0,54, Ø büyüme performansı indeksi 3,46 olarak hesaplanmıştır. Doğal ölüm M: 0.74 yr-1, balıkçılık ölüm F: 2,81 yr-1, toplam ölüm Z: 3,55 yr-1 ve sömürü katsayısı E: 0,79 yr-1 olarak hesaplanmıştır. Çalışma sonucunda Karadeniz boyunca S.sardada işletme oranının yüksek olduğu tespit edilmiştir.

Makale detayları

Length-weight relationships, growth parameters, mortality and condition factor of Atlantic bonito (Sarda sarda Bloch, 1793) from the Southern Black Sea

Yazarlar:

Yaşar Genç | Murat Dağtekin | Nimet Selda Başçınar | Elvan Tercan

Yayıncı:

Ordu University

Ana Başlıklar:

Post-Harvest Fisheries Technologies (Incl. Transportation) | Fish Biology | Fisheries Management

Dergi:

Turkish Journal of Maritime and Marine Sciences Vol.11 Issue 1, pp.1-13

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001341389

pISSN:

2564-7016

Sarda sarda

Black Sea

LFDA

ELEFAN

Condition factor

Growth parametersSarda sarda

Karadeniz

LFDA

ELEFAN

Kondisyon faktörü

Büyüme parametreleri

Sayı

Makale detayları

Yazarlar: Yaşar Genç | Murat Dağtekin | Nimet Selda Başçınar | Elvan Tercan

Yayıncı: Ordu University

Ana Başlıklar: Post-Harvest Fisheries Technologies (Incl. Transportation) | Fish Biology | Fisheries Management

Dergi: Turkish Journal of Maritime and Marine Sciences Vol.11 Issue 1, pp.1-13

Belge Tipi: Makale

Yayın Tarihi: 1/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001341389

pISSN: 2564-7016

Sayı

Yazarlar:

Yaşar Genç | Murat Dağtekin | Nimet Selda Başçınar | Elvan Tercan

Yayıncı:

Ordu University

Ana Başlıklar:

Post-Harvest Fisheries Technologies (Incl. Transportation) | Fish Biology | Fisheries Management

Dergi:

Turkish Journal of Maritime and Marine Sciences Vol.11 Issue 1, pp.1-13

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001341389

pISSN:

2564-7016