Differences in the otolith shape between the Marmara and Northern Aegean Sea stocks of blotched picarel (Spicara maena Linnaeus, 1758)
Burak Saygılı, Ali İşmen, Mukadder Arslan İhsanoğlu
Faculty of Marine Science and Technology, Çanakkale Onsekiz Mart University, TR-17100, TURKEY
In this study, the differences between the otolith morphometry of Spicara maena individuals in the North Aegean Sea and Marmara Sea have been investigated. The samples were obtained with set nets and line fishing in the North Aegean Sea: Dikili, Altınoluk, and Küçükkuyu, and Marmara Sea: Karabiga, Bandırma, and Tekirdağ shores between February and October 2013. In total, 155 individuals from the North Aegean Sea and 168 individuals from the Marmara Sea were sampled. The coordinates and distance of the points on otolith were determined with image analysis program Image J 1.47v. The otolith shapes of the stocks were compared by the discriminant analysis method. The differences between the otoliths of the individuals sampled from North Aegean Sea and Marmara Sea are statistically significant (P<0.05). The discriminant analysis successfully explained the difference between the two stocks at 73.5%. The results showed that the S.maena stocks obtained from the North Aegean Sea and the Marmara Sea might be different.
Keywords: Blotched picarel, Spicara maena, Marmara Sea, North Aegean Sea, otolith morphometry
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