Volume 45, Issue 4
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Seven anopheline species from Costa Marques, Rondonia, Brazil were compared with for susceptibility to infection by . Laboratory-reared F progeny of field-collected and the test anopheline species were fed at the same time on the same patients, all of whom had gametocytes in peripheral blood before treatment. Mosquitoes were dissected on day 8 after infection for oocysts and on days 14–16 after infection for sporozoites. The mean numbers of oocysts and the percent of salivary gland infections for and were similar and far exceeded those found in the other anopheline species tested. and were less susceptible to infection by oocyst measurements than . However, for oocyst-infected and , the percent of mosquitoes with salivary gland infections and the numbers of sporozoites in the salivary glands were similar to and were both susceptible to infection, but the sporozoite infection rates and the numbers of sporozoites observed in the salivary glands were very low. and both developed oocysts, but were never observed to have sporozoites in the salivary glands. These studies implicate some anopheline species as potential malaria vectors, but also show that species previously incriminated by ELISA techniques are not vectors of malaria parasites in Costa Marques, Rondonia, Brazil.


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