<abstract xmlns="http://www.w3.org/1999/xhtml"><sec id="j_1905-7415.0903.399_s_001_w2aab3b7b5b1b6b1aab1c16b1Aa"><h3>Background</h3><p>The use of mosquito coils is a common method of protection against mosquito bites and mosquito borne diseases. These coils are widely marketed and used by households in Malaysia to prevent mosquito associated problems.</p></sec><sec id="j_1905-7415.0903.399_s_002_w2aab3b7b5b1b6b1aab1c16b2Aa"><h3>Objective</h3><p>To determine the bioefficacy of commercial <italic>d</italic>-allethrin and <italic>d</italic>-<italic>trans</italic> allethrin spatial repellents against the dengue vector <italic>Aedes aegypti</italic>.</p></sec><sec id="j_1905-7415.0903.399_s_003_w2aab3b7b5b1b6b1aab1c16b3Aa"><h3>Method</h3><p>We evaluated the knockdown and mortality effects of spatial repellents containing <italic>d</italic>-allethrin (0.3% w/w) and <italic>d</italic>-trans allethrin (0.1% and 0.15% w/w) on <italic>Ae. aegypti</italic> in a Peet Grady Chamber, relative to a reference product (0.2% w/w <italic>d</italic>-allethrin).</p></sec><sec id="j_1905-7415.0903.399_s_004_w2aab3b7b5b1b6b1aab1c16b4Aa"><h3>Results</h3><p>The spatial repellent containing 0.3% <italic>d</italic>-allethrin had the shortest knockdown times (KT<sub>50</sub> and KT<sub>90</sub>) and these were significantly different from the other products including the reference coil except the 0.15% <italic>d</italic>-trans allethrin coil. The spatial repellent containing 0.3% <italic>d</italic>-allethrin elicited a mortality response of 96%, which was significantly different from the mortality response to the other coils, except for the 0.15% <italic>d</italic>-trans allethrin formulation.</p></sec><sec id="j_1905-7415.0903.399_s_005_w2aab3b7b5b1b6b1aab1c16b5Aa"><h3>Conclusions</h3><p>Spatial repellents containing 0.3% <italic>d</italic>-allethrin or 0.15% <italic>d</italic>-<italic>trans</italic> allethrin had higher efficacies against <italic>Ae. aegypti</italic> than repellents containing 0.2% w/w <italic>d</italic>-allethrin or 0.1% <italic>d</italic>-trans allethrin and their use by households could offer better relief from <italic>Ae. aegypti</italic>.</p></sec></abstract>

BackgroundThe use of mosquito coils is a common method of protection against mosquito bites and mosquito borne diseases. These coils are widely marketed and used by households in Malaysia to prevent mosquito associated problems.ObjectiveTo determine the bioefficacy of commercial d-allethrin and d-trans allethrin spatial repellents against the dengue vector Aedes aegypti.MethodWe evaluated the knockdown and mortality effects of spatial repellents containing d-allethrin (0.3% w/w) and d-trans allethrin (0.1% and 0.15% w/w) on Ae. aegypti in a Peet Grady Chamber, relative to a reference product (0.2% w/w d-allethrin).ResultsThe spatial repellent containing 0.3% d-allethrin had the shortest knockdown times (KT50 and KT90) and these were significantly different from the other products including the reference coil except the 0.15% d-trans allethrin coil. The spatial repellent containing 0.3% d-allethrin elicited a mortality response of 96%, which was significantly different from the mortality response to the other coils, except for the 0.15% d-trans allethrin formulation.ConclusionsSpatial repellents containing 0.3% d-allethrin or 0.15% d-trans allethrin had higher efficacies against Ae. aegypti than repellents containing 0.2% w/w d-allethrin or 0.1% d-trans allethrin and their use by households could offer better relief from Ae. aegypti.

Comparative efficacy of spatial repellents containing <italic>d</italic>-allethrin and <italic>d-trans</italic> allethrin against the major dengue vector <italic>Aedes aegypti</italic> (Linnaeus)

Asian Biomedicine

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Comparative efficacy of spatial repellents containing -allethrin and  allethrin against the major dengue vector  (Linnaeus)

BackgroundThe use of mosquito coils is a common method of protection against mosquito bites and mosquito borne diseases. These coils are widely marketed and...

Comparative efficacy of spatial repellents containing d-allethrin and d-trans allethrin against the major dengue vector Aedes aegypti (Linnaeus)

Article Category: Brief communication (Original)

Published Online: Jan 31, 2017

Page range: 313 - 320

DOI: https://doi.org/10.5372/1905-7415.0903.399

Keywords
-allethrin, -trans allethrin, mosquito, spatial repellent

© 2015 Fatma M. A. El-garj, Silas W. Avicor, Mustafa F.F. Wajidi, Zairi Jaal

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Comparative efficacy of spatial repellents containing d-allethrin and d-trans allethrin against the major dengue vector Aedes aegypti (Linnaeus)

Article Category: Brief communication (Original)

Published Online: Jan 31, 2017

Page range: 313 - 320

DOI: https://doi.org/10.5372/1905-7415.0903.399

Keywords-allethrin, -trans allethrin, mosquito, spatial repellent

© 2015 Fatma M. A. El-garj, Silas W. Avicor, Mustafa F.F. Wajidi, Zairi Jaal

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
-allethrin, -trans allethrin, mosquito, spatial repellent