Infección estacional por metacercarias de diplostomum, austrodiplstomum, mordax y tylodelphys destructor en el pejerrey chileno, basilichthys australis, en el Lago Riñihue de Chile / Seasonal Infection by metacercaries of diplostomum, austrodiplstomum, mordax and tylodelphys destructor in the chilean silverside, basilichthys australis, in Lago Riñihue, Chile

RESUMEN

Between 1993 and 1994, 129 specimens basilichthys australis, from Lake Riñihue (39º50's; 72º20'W) in the south of Chile were examined, in order to determine the prevalence and mean intensity of infections by diplostomum mordax y tylodelphys destructor metacercariae in the brain of fishes. Prevalence and mean intensity of D. mordax and mean intensity of T. destructor not showed seasonal significant differeces. Prevalence of T. destructor was higher in summer than in winter, spring and autumm. No association between intensity of infection by D. mordax and T. destructor and body condition of the host was observed