The higher exploitation rate (E=0.62) and younger individuals from the landings are evidence of heavy fishing pressure on bluefish in the Sea of Marmara.
📌 3 Key Takeaways
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Objective & Hypothesis:A total of 2813 bluefish from the Sea of Marmara were monthly collected from commercial coastal artisanal fisheries, purse seines, landing at Istanbul fish market between January 2003 and December 2004.
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Key Findings & Data:The maximal catch length in the study samples was 45.3 cm and mean length was 16.9 cm ± 0.01 (8.4 – 45.3 cm).
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Conclusion & Impact:The higher exploitation rate (E=0.62) and younger individuals from the landings are evidence of heavy fishing pressure on bluefish in the Sea of Marmara.
🔬Design:Research Article
📍Scope:2003 Verileri
⚙️Variables:Domain Parameters
Abstract
A total of 2813 bluefish from the Sea of Marmara were monthly collected from commercial coastal artisanal fisheries, purse seines, landing at Istanbul fish market between January 2003 and December 2004. The maximal catch length in the study samples was 45.3 cm and mean length was 16.9 cm ± 0.01 (8.4 – 45.3 cm). Total (Z), natural (M) and fishing (F) mortalities of bluefish from Marmara Sea were found as 0.60 year-1, 0.36 year-1and 0.96 year-1, respectively. The higher exploitation rate (E=0.62) and younger individuals from the landings are evidence of heavy fishing pressure on bluefish in the Sea of Marmara.
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Cite This Article
AKYOL, O., CEYHAN, T. (2022). Exploitation and mortalities of bluefish (Pomatomus saltatrix L.) in the Sea of Marmara, Turkey. Journal of Applied Biological Sciences, Cilt: 1 - Sayı: 3, 25–27. https://ajindex.com/articles/560349
. Briggs JC. 1960. Fishes of world-wide (circumtropical) distribution. Copeia, 3:171-180. [2]. Tortonese E. 1986. Pomatomidae. In: Whitehead et al., eds. Fishes of the Northeastern Atlantic and Mediterranean. Vol. II,, UNESCO, pp.812-813. [3]. Froese R, Pauly D. 2005. Pomatomus saltatrix. In: Froese, R., Pauly, D., eds. Fishbase (www.fishbase. org), Worldwide Web Electronic Publication, Version(09/2005). [4]. Üner S. 1961. Bluefish (in Turkish). Balık ve Balıkçılık Dergisi, 9 (7):18-22. [5]. DIE. 2004. Fishery statistics 2002 (in Turkish). T.C. Başbakanlık Devlet İstatistik Enstitüsü, Yayın No. 2883, Ankara, 37 p. [6]. FAO. 2000. Fishstat Plus: Universal Software for Fishery Statistical Time Series. Version 2.3. FAO Fisheries Dept., Fishery Information, Data and Statistics Unit. Rome. [7]. Pauly D. 1980. A Selection of simple methods for the assessment of tropical fish stocks. FAO Fisheries Circular, No.729, Rome, 54 p. [8]. Pauly D. 1983. Some simple methods for the assessment of tropical fish stocks. FAO Fisheries Technical Paper, 234, Rome, 52 p. [9]. Gayanilo FC, Sparre P, Pauly D. 1994. The FAO-ICLARM stock assessment tools (FISAT) user’s guide. FAO Computerized Information Series No.6, Rome, 186 p. [10]. Beverton RJH, Holt SJ. 1957. On the dynamics of exploited fish populations. UK Ministry Agriculture and Fisheries, Fish Invest. (Ser.2) 19:533 p. [11]. Erkoyuncu İ. 1995. Fisheries biology and population dynamics (in Turkish). On Dokuz Mayıs Üniv. Sinop Su Ürünleri Fak. Yayın No.95, 265 p. [12]. Türgan G. 1959. About the biology of Pomatomus saltatrix L. (in Turkish). Hidrobiologi Mecmuası, İ.Ü. Fen Fak. Hidrobiologi Araş. Enst. Cilt V (1-4):144-180.