Development of different strains of Plasmodium vivax in two species of Anopheles
Collins, W.E.; Contacos, P.G.; Richardson, B.B.; Skinner, J.C.
American Journal of Tropical Medicine and Hygiene 25(3): 372-375
1976
ISSN/ISBN: 0002-9637 PMID: 779500 Document Number: 96766
Females of Anopheles freeborni Aitken were fed on monkeys (Aotus trivirgatus) or men infected with various strains of Plasmodium vivax. Of those females that had oocysts on the gut wall, a higher proportion of those infected with New World strains of P. vivax had infections in the salivary glands than those infected with Asian, particularly South Vietnamese, strains. Females of A. maculatus Theo. supported development of all strains of P. vivax from oocysts to heavily infected salivary glands. The results suggest that strains of P. vivax that were introduced into the United States from Vietnam would be less likely to be transmitted by the native species A. freeborni than would malaria from some other areas. Anopheles freeborni with oocyst infections had salivary gland infections at a higher rate with strains of Plasmodium vivax from the New World than with strains from Asia, particularly those from South Viet Nam. A. maculatus supported development from oocysts to heavily infected salivary glands for all the strains of P. vivax tested. The results suggest that P. vivax introduced into the USA from Viet Nam would be less likely to be transmitted by native A. freeborni mosquitoes than would malaria from some other areas. [AS].