PRESENCE OF ANILOCRA-FRONTALIS EDWARDS,H.MILNE, 1840 (ISOPODA, FLABELLIFERA) ON THE SOUTHERN ATLANTIC COAST OF THE IBERIAN PENINSULA - SPECTRUM OF PARASITISM AND PARASITIC RELATIONSHIP WITH GOBIUS-PAGANELLUS LINNAEUS, 1758 (PISCES, GOBIIDAE)

Analysis of the occurrence of Anilocra frontalis H. Milne Edwards, 184 0, on intertidal fish of the Spanish-Atlantic coast over four years ha s broadened the known spectrum of parasitism to seven species. The abu ndance of the goby Gobius paganellus Linnaeus, 1758 and its high index of parasitation by Anilocra frontalis, has permitted a more detailed analysis of the parasite-host relationship. In more than 90% of the ca ses the parasites are situated between or immediately behind the eyes. There is a positive correlation between length of parasite and length of host, and a slightly higher percentage of parasitism in the males and in the smaller specimens of Gobius paganellus. Finally, there are great variations in the percentage of infection of Gobius paganellus a t neighbouring points of the coast.