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[Field efficacy of repellent formulation containing para-menthane-3,8-diol and lemongrass against Culicoides pachymerus (Diptera: Ceratopogonidae) in Colombia].

AbstractINTRODUCTION:
Culicoides pachymerus is a major pest species for the inhabitants of the western Boyacá province of Colombia.
OBJECTIVE:
The effect of a repellent lotion based on p-menthane-3,8-diol (16%) and lemongrass oil (2%) was evaluated against the bites of C. pachymerus.
MATERIALS AND METHODS:
The repellent lotion was compared simultaneously with a control (no treatment) by human landing catches of C. pachymerus on the forearms of paired volunteers situated near human dwellings. Protection percentage and protection time for 3 to 6 h after repellent application was calculated. The test was repeated ten times.
RESULTS:
Only two females of C. pachymerus were collected on arms with the repellent treatment. In contrast, the mean biting rate in the untreated control was 47.7 midges/person/10 min. Mean protection percentage of the repellent was 100% up to 4 h and 99.5% up to 5 h. Protection time was 332.2 and 338.2 min in the two replicates where bites of C. pachymerus were confirmed. In the remaining eight replicates protection time exceeded the test duration.
CONCLUSION:
The repellent showed high efficacy against C. pachymerus, up to 5 h post-application.
AuthorsErika Santamaría, Olga Lucía Cabrera, Yaneth Zipa, Raúl Hernando Pardo
JournalBiomedica : revista del Instituto Nacional de Salud (Biomedica) Vol. 32 Issue 3 Pg. 457-60 (Sep 2012) ISSN: 2590-7379 [Electronic] Colombia
Vernacular TitleEficacia en campo de un repelente a base de para-mentano-3,8-diol y aceite de limonaria contra Culicoides pachymerus (Diptera: Ceratopogonidae) en Colombia.
PMID23715194 (Publication Type: Clinical Trial, Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Cyclohexane Monoterpenes
  • Insect Repellents
  • Plant Extracts
  • Menthol
  • terpin
Topics
  • Administration, Cutaneous
  • Animals
  • Ceratopogonidae (drug effects, physiology)
  • Colombia
  • Cyclohexane Monoterpenes
  • Cymbopogon
  • Feeding Behavior (drug effects)
  • Female
  • Humans
  • Insect Bites and Stings (prevention & control)
  • Insect Repellents (administration & dosage, pharmacology)
  • Menthol (analogs & derivatives, pharmacology)
  • Myrtaceae
  • Plant Extracts (isolation & purification, pharmacology)
  • Plant Leaves (chemistry)
  • Skin Cream
  • Time Factors

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