Journals / Turkish Journal of Veterinary and Animal Sciences / 2004 / Cilt: 28 - Sayı: 5

Age, Growth, and Mortality Rates of the European Anchovy (Engraulis encrasicolus L. 1758) off the Turkish Black Sea Coast

Türkiye’nin Karadeniz Sahillerindeki Hamsi Balığının (Engraulis encrasicolus L. 1758) Yaş, Büyüme ve Ölüm Oranları

Pages
901–910
Publication Date
2004-05-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The exploitation rates (E) of 0.66 and 0.71 for each season indicate that the population is being heavily exploited.

📌 3 Key Takeaways

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Objective & Hypothesis:This study was conducted during the Engraulis encrasicolus fishing seasons of 1998-1999 and 1999-2000, and some basic characteristics of this population off the Turkish coast of the Black Sea were examined.
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Key Findings & Data:Weight-length relationships and von Bertalanffy growth equations were estimated as W = 0.0083 L2.872 and Lt = 15.66[1 – e-0.3368 (t+2.526)] and W = 0.0076 L {2.919} and L t = 17.07 [1 – e–0.2836 (t+2.1047)] for the 1998-1999 and 1999-2000 fishing seasons, respectively.
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Conclusion & Impact:The exploitation rates (E) of 0.66 and 0.71 for each season indicate that the population is being heavily exploited.
🔬Design:Research Article
📍Scope:2000 Verileri
⚙️Variables:Hamsi · Engraulis encrasicolus · Karadeniz

Abstract

This study was conducted during the Engraulis encrasicolus fishing seasons of 1998-1999 and 1999-2000, and some basic characteristics of this population off the Turkish coast of the Black Sea were examined. Weight-length relationships and von Bertalanffy growth equations were estimated as W = 0.0083 L2.872 and Lt = 15.66[1 – e-0.3368 (t+2.526)] and W = 0.0076 L {2.919} and L t = 17.07 [1 – e–0.2836 (t+2.1047)] for the 1998-1999 and 1999-2000 fishing seasons, respectively. For the 1998-1999 fishing season total (Z), natural (M), and fishing (F) mortality rates were Z = 1.44 year-1, M = 0.49 year-1 and F = 0.95 year-1 and for the 1999-2000 season they were Z = 1.60 year-1, M = 0.46 year-1 and F = 1.44 year-1, respectively. The exploitation rates (E) of 0.66 and 0.71 for each season indicate that the population is being heavily exploited.

Özet

Bu çalıflma Karadeniz’in Türkiye sahilinde 1998-1999 ve 1999-2000 av sezonlarında avlanan hamsi balı¤ının bazı temel özelliklerini incelemek için yürütülmüfltür. Uzunluk-a¤ırlık iliflkisi ve von Bertalanffy büyüme parametreleri 1998-1999 ve 1999- 2000 av sezonunda W = 0.0083L 2.872, Lt = 15.66[1-e -0.3368 (t+2.526)] ve W = 0.0076 L 2.919, Lt = 17.07 [1-e –0.2836 (t+2.1047)] olarak hesaplanmıfltır. Toplam (Z), do¤al (M) ve avcılık (F) ölümleri sırasıyla, 1998-1999 av sezonu için Z = 1,44 yıl-1, M = 0,49 yıl-1, F = 0,95 yıl-1 ve 1999-2000 sezonu için Z = 1,60 yıl-1, M = 0,46 yıl-1, F = 1,44 yıl-1 olarak hesaplanmıfltır. Her iki sezon için sırasıyla 0,66 ve 0,71 olarak hesaplanan stoktan yararlanma oranı (E), populasyonun yo¤un bir flekilde av baskısı altında oldu¤unu göstermektedir.

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Cite This Article

SAMSUN, O., SAMSUN, N., KARAMOLLAOĞLU, A. C. (2004). Age, Growth, and Mortality Rates of the European Anchovy (Engraulis encrasicolus L. 1758) off the Turkish Black Sea Coast. Turkish Journal of Veterinary and Animal Sciences, Cilt: 28 - Sayı: 5, 901–910. https://ajindex.com/articles/122505

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