Infection of Salmincola edwardsii (Copepoda: Lernaeopodidae) in an age-structured population of Arctic charr - a long-term study

aetiology age groups animal aquatique aquatic animals branchie branquias copepoda disease prevalence ecologia ecologie ecology ectoparasites enfermedades de los peces epidemiologia epidemiologie epidemiology etiologia etiologie fish diseases freshwater fishes gills grupos de edad host parasite relations invertebrados invertebrates maladie des poissons parasite parasites peces de agua dulce periodicidad periodicity poisson d'eau douce population ecology salvelinus alpinus seasonality