[The insecticidal action of the synthetic pyrethroid Decis on the rodent flea]. / Izuchenie insektsitsidnogo deistviia sinteticheskogo piretroida--detsisa na blokh gryzunov.

A new aspect of insecticide action of synthetic pyrethroid "Decis" as a system poison for wild rodent flea control is discussed. Rapid decay of the insecticide gives an opportunity to use it in grain baits in the natural foci of plague.

[Effect of nematoda Aphanitylenchus sp. on the reproductive capacity of fleas Ceratophyllus consimilis]. / Vliianie nematod Aphanitylenchus sp. na reproduktivnuiu sposobnost' blokh Ceratophyllus consimilis.

The paper presents results of experimental studies of the effect of Allantonematidae on the reproduction of fleas. It has been established that the pairing of non-infected females with males infected with nematodes reduces the fecundity rate while the pairing of non-infected males with females infected with nematodes causes a complete stopping of reproduction of laboratory population. The conclusion was drawn on the role of allantonematides in the regulation of abundance of fleas of rodents in nature.