Abstract
Size analyses of inorganic particles found in alimentary tracts were made for five species of Mediterranean mullets ( Mugil cephalus, Liza ramada, L. aurata, L. saliens and Chelon labrosus) from two locations. M. cephalus, L. aurata and C. labrosus from a Sardinian lagoon (characterized by a substrate of sand/fine sand sediment 500-125 μm) had a preference for fine sands (250-125 μm). M. cephalus and L. aurata from a Policoro fish pond (with a substrate of fine sand/silt-clay sediments (250-<63μm) also selected fine sands, but L. ramada selected exclusively for silt-clays (<63 μm). Correlation coefficients with statistical significance indicated the ability of M. cephalus to exploit a wider range of substrates; L. aurata, L. saliens and C. labrosus were less adaptable, and L. ramada preferred only the silt-clay fraction.
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