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Experimental and statistical investigations of the global chemical composition of six trawling fish of the Gulf of Gabès (Mediterranean Sea)

Published online by Cambridge University Press:  06 July 2010

Aida Koubaa ,
Abdelwaheb Abdelmouleh ,
Abderrahmen Bouain  and
Nourhène Boudhrioua Mihoubi
Aida Koubaa*
Affiliation:
Laboratoire de Biologie Animale, Faculté des Sciences de Sfax BP 802—Sfax (Tunisia)
Abdelwaheb Abdelmouleh
Affiliation:
Laboratoire de Biotechnologie, Institut National des Sciences et Technologies de la Mer —Sfax (Tunisia)
Abderrahmen Bouain
Affiliation:
Laboratoire de Biologie Animale, Faculté des Sciences de Sfax BP 802—Sfax (Tunisia)
Nourhène Boudhrioua Mihoubi
Affiliation:
Groupe de Génie des Procédés Agroalimentaires, Ecole Nationale des Ingénieurs de Sfax—(Tunisia)
*
Correspondence should be addressed to: A. Koubaa, Laboratoire de Biologie Animale, Faculté des Sciences de Sfax BP 802-Sfax (Tunisia) email: aydakoubaa@yahoo.fr
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Abstract

The aim of this work is to study the variation of the global chemical composition of six fish species (Lithognathus mormyrus, Mullus barbatus, Mullus surmuletus, Pagellus erythrinus, Pagrus caeruleostictus and Dentex maroccanus) caught by the trawl of the Gulf of Gabès (Mediterranean Sea). The variations of the chemical contents of the fish as a function of size, sex, organs and parts of the muscle were examined between December 2005 and May 2006. ANOVA indicated that the global chemical composition was significantly affected by two factors: species and body locations (parts of the muscle). The correlation matrix established between the chemical contents showed two highly significant correlations (fat–moisture and protein–ash). The discriminant analysis allowed the distribution in the space of fish species into five groups according to their moisture, proteins, fat and ash contents. The analysis of the fat content in the parts of the fish body revealed the presence of a concentration gradient.

Keywords

fishtrawling catchchemical compositiondiscriminant analysis
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 91 , Issue 8 , December 2011 , pp. 1689 - 1695
Copyright
Copyright © Marine Biological Association of the United Kingdom 2010

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