Anopheles Mosquitoes and Avian Malaria

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Mayne (1) reported in 1928 finding oocysts of avian malaria (provisionally identified as belonging to the species P. praecox, Grassi and Feletti, 1890) in anopheles mosquitoes (A. subpictus), some experimentally fed on an infected sparrow, others caught in a room where malaria-infected birds were being kept. These findings suggest the possibility of such infections in nature, which might vitiate a natural infection index of anopheles mosquitoes dissected in the course of a malaria survey.

It therefore seems worthwhile to report some negative findings observed in the course of experiments in connection with malaria studies at the Bureau of Science in Manila.

Culex fatigans and Aedes aegypti kept in screened boxes, in some experiments 1 by 1 by 1 foot, in others 2 by 2 by 2 feet in size, will feed freely on canaries kept continuously in wire cages in the same boxes.