Development of monogenean communities on the gills of roach fry (Rutilus rutilus)

aetiology alevines branchie branquias cours d'eau cursos de agua dactylogyrus disease prevalence ecologia ecologie ecology etiologia etiologie exploitation piscicole fish farms fish larvae freshwater ecology freshwater fishes fry gills gyrodactylus larve de poisson monogenea peces de agua dulce poisson d'eau douce rivers rutilus rutilus rutilus