Polyparasitism by monogenea in wild Hemichromis elongatus (Guichenot, 1861) (Pisces: Cichlidae): A study model encouraging the prevention of heavy parasitic infections in fish farms

The present paper aims to study the occurrence of monogenean species infecting gills wild Hemichromis elongatus (Pisces). Fish specimens were caught with nets, fixed in 10% formalin and then dissected. Monogenean found removed under a stereomicroscope needle, mounted between slide cover slip drop hematoxylin eosin. Among five parasite found, only O. voltaensis C. euzeti infesting their host alone. There significant differences mono-parasitism polyparasitism both load infection rate, which higher simultaneous infestations. These ectoparasites best exploit common when they co-occur. This phenomenon observed natural conditions is threat fish farming where high densities favor transmission. We therefore recommend quarantining native captured wild, periodic pond sanitization deworming.