[Trials to introduce Romanomermis culicivorax (Nematoda: Mermithidae), mosquito larva parasites, into the reservoirs of Voronezh and Moscow Province].

Possibility of using Romanomermis culicivorax for mosquito control in the town of Voronezh and Moscow Province has been assessed. The infection rate of mosquito larvae didn't exceed 26% when preparasitic juveniles were released into water bodies at a ratio of 1-3 thousand per 1 m2 and temperature 18-25 degrees C. There were no evidences of mermithid settlement and hibernation in the water bodies of Voronezh. High efficacy of using R. culicivorax in mosquito larvae control can only be expected in these regions under hot summer conditions.