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Further evidence that deltamethrin‐impregnated collars protect domestic dogs from sandfly bites
Author(s) -
Halbig P.,
Hodjati M. H.,
MazloumiGavgani A. S.,
Mohite H.,
Davies C. R.
Publication year - 2000
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1046/j.1365-2915.2000.00229.x
Subject(s) - sandfly , psychodidae , veterinary medicine , deltamethrin , biology , phlebotomus , leishmaniasis , phlebotominae , toxicology , medicine , leishmania , immunology , ecology , parasite hosting , pesticide , world wide web , computer science
Summary In many foci of zoonotic visceral leishmaniasis (ZVL), domestic dogs are important reservoir hosts of the causative Leishmania parasites transmitted by phlebotomine sandflies (Diptera: Psychodidae). We tested the protective value of impregnated dog collars (20 g plastic containing deltamethrin 800 mg ai) against Phlebotomus papatasi (Scopoli) sandflies in Iran. For each assay, the dog was sedated and caged in a net with 70–100 wild‐caught sandflies overnight (23.30–06.30 hours). Dogs wearing the collars were bitten by ∼80% fewer sandflies than before collars were fitted, i.e. 51% vs. 11% of hungry female flies exposed. Sandfly mortality rates following 20 h exposure to dogs with collars (18%) or without collars (17%) were not significantly different. Effects of collars were tested when dogs had been wearing them for 8 days. A previous trial against the sandfly P. perniciosus Newstead in France, using smaller dogs, showed that effects of such collars were not fully realized until they had been worn for 2 weeks or more; they remained effective for at least 8 months and killed significant proportions of the sandflies exposed. Present results with P. papatasi , confirming that this simple device provides effective protection against sandflies, are considered sufficiently encouraging to justify a community‐wide field trial of deltamethrin‐impregnated dog collars against ZVL vector sandflies in Iran.