Inventaire des proies ingérées par le marbré Lithognathus mormyrus (Linnaeus, 1758) (pisces : perciformes : sparidae) dans la baie d'Alger et d' Annaba

At the time of a survey of the biology of Lithognathus mormyrus and its feeding ecology and dynamies, in the region of Algiers and Annaba, preys ingested by this species were determined from stomach contents. Food was composed entirely of benthic organisms. It has been counted more than 45 species-preys distributed in 9 taxonomic classes. The quantitative analysis of these preys and the variation of the food regime according to a certain number of parameters were treated. The young individuals fed on small Tellinids bivalves and adults, on Crustaceans Amphipods, Cumaceans, Decapodes, Molluscs, sea urchins and Polychaetes. The feeding of this fish was rich and varied in preys species and little among them were preferential. The three main sources of food were Molluscs Crustaceans and tlle Clupeids fish L. mormyrus was classified as euryphage Variations according to the region were landed from a mathematical model of prey-predators type. NOT CONTROLLED OCR