Morphometric Structuring of the Anchovy (Engraulis encrasicolus L.) in the Black, Aegean and Northeastern Mediterranean Seas

Authors : Cemal TURAN, Deniz ERGÜDEN, Mevlüt GÜRLEK, Nuri BAŞUSTA, Funda TURAN

Pages : 865-871

View : 15 | Download : 4

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The status of populations of anchovies in Turkish terrestrial waters was preliminarily investigated using morphometric characters with the truss network system. Samples were taken from the main fishing areas of each sea, comprising the central insert ignore into journalissuearticles values(Sinop); and eastern insert ignore into journalissuearticles values(Trabzon); Black Sea, the Aegean Sea insert ignore into journalissuearticles values(İzmir); and the eastern Mediterranean insert ignore into journalissuearticles values(İskenderun);. Plotting discriminant functions 1 and 2, explaining 93% of between-group variability, revealed a high degree of dissimilarity among the anchovy samples, indicating that the anchovies in each sea represent different aggregations. The overall random assignment of individuals into their original group was high insert ignore into journalissuearticles values(80%);. Pairwise comparisons using multivariate analysis of variance insert ignore into journalissuearticles values(MANOVA); showed highly significant differences between all the samples insert ignore into journalissuearticles values(P < 0.001);. Univariate analysis of variance insert ignore into journalissuearticles values(ANOVA); revealed significant differences with varying degrees between the means of the 4 samples for 16 out of 25 standardized morphometric measurements. Principal components analysis insert ignore into journalissuearticles values(PCA); indicated that the observed differences were mainly from the measurements taken from the head.
Keywords : Anchovy, Engraulis engrasicolus, stock identification, morphometric characters, the truss network system