RESUMO
Studies on the susceptibility of mosquitos in the USSR to imported species and strains of human malaria parasites have revealed that Anopheles atroparvus, A. messeae, and A. sacharovi are highly susceptible to strains of Plasmodium vivax from Africa, Asia, and South America. There was no significant variation in the level of adaptation to the various vector species.In experiments on infection of A. atroparvus and A. messeae with imported strains of P. falciparum from Africa and southern Asia, all the results were negative.It was possible to infect A. subalpinus with an African strain of P. falciparum, sporozoites being found in the salivary glands of all the mosquitos studied.Contradictory results have been obtained on the development of tropical strains of P. falciparum in A. sacharovi. In most experiments the parasite did not develop but in 5 experiments, oocysts and sporozoites were seen in 9 mosquitos.Attempts to infect A. atroparvus with West African strains of P. ovale and P. malariae were unsuccessful.