Diet overlap of juvenile salema (Sarpa salpa), bogue (Boops boops) and common two-banded sea bream (Diplodus vulgaris) in the south-eastern Adriatic


Author's address: Tatjana Dobroslavić, University of Dubrovnik, Department for Aquaculture, Ćira Carića 4, Dubrovnik, Croatia.



The food compositions of salema Sarpa salpa, bogue Boops boops and common two-banded seabream Diplodus vulgaris in Donji Molunat Bay (south-eastern Adriatic) were studied in order to evaluate the diet overlap among them. Fish were collected from March to July 2009 using a beach seine net. Three species of crustaceans were the most common prey, the most abundant being copepods. A significant overlap in the diet calculated using Schoener's index was recorded in May when the index was 0.9266 for bogue and salema, 0.6091 for bogue and common two-banded seabream, and 0.6142 for common two-banded seabream and salema.