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Age, growth and reproduction of European hake (Merluccius merluccius (Linn., 1758)) in the Central Aegean Sea, Turkey
Sokan, O.; Ilkyaz, A.T.; Metin, G.; Kinacigil, H.T. (2015). Age, growth and reproduction of European hake (Merluccius merluccius (Linn., 1758)) in the Central Aegean Sea, Turkey. J. Mar. Biol. Ass. U.K. 95(4): 829-837. http://dx.doi.org/10.1017/S002531541400201X
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154; e-ISSN 1469-7769
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Merluccius merluccius (Linnaeus, 1758) [WoRMS]; Merluccius merluccius (Linnaeus, 1758) [WoRMS]
    Marien/Kust
Author keywords
    European hake; Aegean Sea
Auteurs  Top 
  • Sokan, O.
  • Ilkyaz, A.T.
  • Metin, G.
  • Kinacigil, H.T.
Abstract
    Specimens of European hake were collected by a traditional demersal trawl between July 2004 and June 2007 from İzmir Bay, Central Aegean Sea. A total of 2108 individuals were sampled during the study and the female: male sex ratio of the stock was 1:0.89. The length–weight relationship was W = 0.00341L3.24 (R2 = 0.994) for all individuals. A high gonadosomatic index was evident over most of the year but it was minimal from August to October. The estimated age composition was 1–5 years; the length and weight at infinity were calculated as L∞ = 54.53 cm and W∞ = 1455.77 g respectively. In addition, growth coefficient was found to be k = 0.315 y−1 and t o  = −0.223 y (R2 = 0.99). Total mortality ratio of the stock was calculated as Z = 1.539 y−1, while natural and fishing based mortality ratio were estimated as M = 0.579 y−1 and F = 0.959 y−1 respectively, with the exploitation ratio (E) of the stock estimated to be 0.624.
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