Overnight access to sugar and response to DDT in Anopheles albimanus Wied

A study was made of the response of A. albimanus females to DDT after overnight access to sugar solutions. Tarsal contact with the solutions had a statistically significant protective effect proportional to the strength of the solution. Prior access to sugar can produce considerable experimental error and thus invalidate DDT susceptibility tests. Reports of DDT resistance among anophelines should be treated with caution when the tests were conducted on insects that had access to sugar.