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Am. J. Trop. Med. Hyg., 23(2), 1974, pp. 274-281
Copyright © 1974 by The American Society of Tropical Medicine and Hygiene

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Release of Chemosterilized Males for the Control of Anopheles Albimanus in El Salvador

I. Characteristics of the Test Site and the Natural Population*

Samuel G. Breeland{dagger}, Geoffrey M. Jeffery{dagger}, Clifford S. Lofgren AND Donald E. Weidhaas{ddagger}
Central America Malaria Research Station, San Salvador, El Salvador

Studies between 1968 and 1971 in the Apastepeque area of El Salvador revealed characteristics of a natural population of Anopheles albimanus which suggested that the site was suitable for a feasibility study of the chemosterilized male release technique for the control of a natural, isolated population of the species. The site is characterized by year-round anopheline breeding in an isolated 100-acre volcanic lake (Lake Apastepeque), augmented by rainy season breeding in a nearby pasture (Laguna Ciega). The dispersal of the adult mosquito population is restricted to an area of about 15 km2, being limited by blood and shelter sources. Densities of adult A. albimanus fluctuated in a repetitive and predictable seasonal pattern that resulted in the formulation of release schedules and evaluation methodology for field releases of sterile males during 1972.

Accepted for publication September 1, 1973.


* This research was supported in part by contract funds from the Army Medical Research and Development Command.

Address reprint requests to: Bureau of Tropical Diseases, Center for Disease Control, 1600 Clifton Road, Atlanta, Georgia 30333.


{dagger} Central America Malaria Research Station, San Salvador, El Salvador, Malaria Program, Center for Disease Control, Health Services and Mental Health Administration, Public Health Service, U. S. Department of Health, Education, and Welfare, Atlanta, Georgia 30333. This program was supported by the Agency for International Development, U. S. Department of State.


{ddagger} Insects Affecting Man Research Laboratory, Agricultural Research Service, USDA, Gainesville, Florida 32604.






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Copyright © 1974 by the American Society of Tropical Medicine and Hygiene.