[Joint parasitism of Microsporidia (Nosematidae) and Mermithidae (Nematoda) in the larvae of blood-sucking mosquitoes (Diptera, Culicidae)].

A double infection of the larvae of Aedes flavescens and A. cantans with Thelohania opacita and larvae of Mermithidae was established. The double infection is not accompanied by the rise of pathogenic effect of the parasites on the hosts. Mermithids parasitizing mosquitoes infected with microsporidians inhibit the development of Protozoa. The inhibition degree depends on the duration of contacts of coparasites as well as on the developmental phase of microsporidians at the moment of penetration of nematodes.