influences of sex, total length and weight on content of omega-3 in edible tissue of two crustacean species (penaeus semisulcatus and thenus orientalis) from the persian gulf

in current research relationship between eicosapentaenoic acid (epa) and docosahexaenoic acid (dha) (% of total fatty acids) in edible tissue (muscle) of green tiger shrimp (penaeus semisulcatus) and lobster (thenus orientalis) collected from persian gulf, was investigated with some biological factors (total length, total weight and sex). results showed that in all two species, epa and dha percent was decreased in relation to increase of total length and weight, that was significantly for all relationships in green tiger shrimp and relationship between dha and total length for lobster (p<0.03). the result also showed that: there were highly significant differences between the sexes in epa levels of p.semisulcatus, with males showing higher levels than females (12.38 and 10.56 respectively).