I policheti dello stagno salmastro di acquatina: problematiche della dispersione nelle specie lagunari

EnA hypothesis concerning the type of dispersal among Mediterranean lagoons is discussed. Polychaetes of Acquatina lake (Lecce, Italy) were studied as an example, to individuate life-cycles and length of larval phases. Faunistical exchange between the lake and the sea seems to be absent, so that larval phases should not be responsible for dispersal of brakish-water Polychaete species. Other mechanism such as resting stages are probably involved in dispersal