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Flight Range of the Funestus-Minimus Subgroup of Anopheles in the Philippines

First Experiment with Stained Mosquitoes¹

Domingo Santiago, Field Staff
"Malaria Investigations,"

The distance which anopheline mosquitoes can fly is discussed in a general way, with citations from the literature. The first flight-experiment in the Philippines is reported. In this experiment, stained mosquitoes of the malaria-carrying species were liberated, some being recaptured later at various distances from the liberating point. Of the funestus-minimus subgroup, A. minimus var. flavirostris was recaptured 0.5 kilometer from the liberating point; A. mangyanus with 0.9 kilometer of this point, and A. filipinae at 1 kilometer from the point.

¹ This experiment was carried out by "Malaria Investigations," a project jointly supported by the Bureau of Science, Manila, and the International Health Division of the Rockefeller Foundation. The senior author is chief and the junior author is field inspector of "Malaria Investigations." They are indebted to the following members of the staff for assistance: Misses A. Capistrano and A. Reyes, microscopists; Mr. A. Nono, chief field inspector; and Messrs. F. Guinto and C. Tobias, assistants. Also to Mr. F. E. Baisas, chief field director of the Malaria Control Section of the Bureau of Health, assigned to "Malaria Investigations" through the courtesy of the director of the Philippine Bureau of Health. They are particularly indebted to the Rev. Father Miguel Selga, S.J., director of the Weather Bureau of the Philippines, for the use of a recording anemometer during the experiment.