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Importance of Flies (Diptera Brachycera) in the Distribution of Helminth Eggs from Municipal Sewage-Treatment Plants

JURIS P, VILAGIOVA I, PLACHY P
Veterinarni Medicina 40, 1995, 289-292

Screenings were carried out in four mechanico-biological municipal wastewater treatment plants in two climatico-geographic regions of Slovakia (submontane region: Levoca, Poprad and Tatranska Lomnica, lowland region: Michalovce). Ovoscopical studies traced the occurrence of helminth eggs in stabilized sludges in sludge beds. The flies (Diptera-Brachycera) are considered as potencial biological vectors of helminth eggs. The stabilized sludges in sludge beds showed the presence of a wide range of helminth eggs Ascaris sp. 0-184 spec. Hymenolepis sp. 0-5 spec. Toxocara sp. 0-17 spec. Taenia sp. 0-2 spec. Trichuris sp. 0-17 spec. a Capillaria sp. 0-4 spec./100 g of sample dry matter. In the areas of four sewage treatment plants 461 fly specimens (358 females, 103 males) were captured, belonging to 31 species. On three specimens of Protophormia terraenovae ectoparasites (mites) were detected. No eggs were found on the body surface of the flies


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