Potential Effects Of Pyrethrin Incorporated In Sucrose Baits Against Phlebotomus Duboscqi Neveu Lemaire (diptera: Psychodidae) In Leishmaniasis Control Strategies
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Date
2010-11-06
Journal Title
Journal ISSN
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Publisher
Webmedcentral
Abstract
Background: Due to challenges of controlling
leishmaniasis in Kenya through the vector, the efficacy
of pyrethrin EC (Pymos™ 0.6% W/V) a mosquito
adulticide was evaluated against Phlebotomus
duboscqi while incorporated in sucrose as a possible
complementary method.
Methods: Pyrethrin was prepared into concentrations
of 0.08, 0.25and 0.5 mg/ml using 10% sucrose. Ten
male and female sand flies were each aspirated into
jars and fed separately with the prepared solutions
using cotton wool pads placed atop experimental jars
and mortality monitored each day. The experiments
were replicated three times.
Results: Significant mortality (P< 0.05) for both sexes
was observed. The concentration of 0.08mg/ml gave
low adult mortality in 24 hours but amplified with time.
In the 0.25 bioassay, mortality of females were 10
(33.3%) and males had 21 (70%) in 24 hours. The LD50
for females and males tied at 0.1 mg/ml in 48 hours of
exposure. The concentration of 0.25 mg/ml was ideal
at 48 hours of feeding where majority of the sand flies
succumbed to the insecticide. There were significant
mortality differences (P <0.05) between the
concentrations but no significant difference (P>0.05)
was observed in male and female mortality at 48 hours
of exposure however. Although we cannot rule out
sand fly mortality due to contact with the test material,
the results of this study however suggest that control
strategies using low-dose pyrethrin-sugar
combinations as baits may be effective against
phlebotomine sand flies and other sugar feeding pests
of medical importance.
Description
Keywords
Pyrethrin sucrose baits, Phlebotomus duboscqi, Leishmaniasis, Vector control
Citation
Ireri L, Mucheru O, Ngure P, Kepha S, Kimutai A, Cirindi J, Tonui W. Potential Effects Of Pyrethrin Incorporated In Sucrose Baits Against Phlebotomus Duboscqi Neveu Lemaire (diptera: Psychodidae) In Leishmaniasis Control Strategies . WebmedCentral PARASITOLOGY 2010;1(11):WMC001086