Sex-ratio, relation taille-masse et coefficient de condition de la thonine commune <Euthynnus alletteratus> (rafinesque, 1810) des côtes Tunisiennes

Abstract

The study is an attempt to estimate sex-ratio, length-weight relationship and condition factor of little tunny Euthynnus alletteratus collected from Tunisian waters. A total of 536 specimens of Euthynnus alletteraus were collected from January 2008 to September 2009. The fork length is ranged between 19,2 and 97,8 cm. The females significantly outnumber the males and the sex-ratio varies according to the length. The growth in length is faster than in weight for males and females. The condition factor computed for female Euthynnus lletteratus was 1,606, while for the male was 1,587.