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Revista Médica Electrónica
versión On-line ISSN 1684-1824
Resumen
SERRATE-SILVEIRA, Isabel de la Caridad et al. Effectiveness of temephos 1% in Culex quinquefasciatus larvae. Matanzas, 2019. Rev.Med.Electrón. [online]. 2022, vol.44, n.1, pp. 116-129. Epub 28-Feb-2022. ISSN 1684-1824.
Introduction:
temefos is the most widely used product for focal treatment. It exists in different formulations and is applied for drinking water tanks, in the form of sand-like granules at a concentration of 1 %.
Objective:
to determine the duration of temefos effectiveness, in its Costa Rican formulation Biolarv G1, in a Matanzas population of Culex quinquefasciatus.
Materials and methods:
a laboratory bioassay was performed, using the F1 of a Matanzas strain of Culex quinquefasciatus, which was subjected to the effects of Biolarv G1, lot 1180829. Three variants of drinking water replacement were used.
Results:
the effectiveness was 100% of larval mortality until the 7th day when 100 % of wáter was replaced. For the replacement of 50 % of water, average mortality was 97.5 % from the 1st to the 17th day. In the case of 30 % water replacement, mortality was 100 % up to the 27th day.
Conclusions:
it was shown that temefos, in its formulation Biolarv G1, can be more effective in replacements of 30 % of water, with a durability of about 30 days, which facilitates the protection of reservoirs during work cycles designed for surveillance and anti-vector control in Cuba.
Palabras clave : temephos 1 %; culicides; Culex quinquefasciatus larvae.