First studies showing high temephos resistance in (: from Tunisia.

Background: Despite the public health importance of , their resistance status to temephos insecticide has not, to our knowledge, been explored.

Objectives: The present study was carried out to determine the temephos resistance status of field populations of from Tunisia.

Methods: Six field populations of were collected as larvae from breeding sites of Northern and Central Tunisia. All the tests were carried out according to the WHO method.

Results: Results reported that the majority of field populations showed low and medium resistance ratios (6.2
Conclusion: The resistance ratios of this species were higher than recorded in other countries. Biochemical and molecular studies would be of great importance to identify the mechanisms involved in the recorded resistance to temephos.