Osservazioni sui Tanaidacei del Porto d'Ischia.

Tanaids distribution has been studied along a horizontal transect in the Ischia harbour. The most important species Anatanais robustus, Tanais dulongii e Leptochelia savignyi, are present in all five stations, but the number of individuals increases towards the interior of the port. Water movement seems to be the most important factor affecting this distribution.