Effects of topical application of fipronil spot-on on dogs against the Chagas disease vector Triatoma infestans
We assessed the insecticidal effects of fipronil spot-on applied to experimental dogs on the blood-feeding success and other vital parameters of the Trypanosoma cruzi vector Triatoma infestans. In the first trial, the cumulative mortality of 30 third or fourth instar nymphs exposed to eight fipronil...
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2009
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00359203_v103_n3_p298_Gurtler http://hdl.handle.net/20.500.12110/paper_00359203_v103_n3_p298_Gurtler |
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paper:paper_00359203_v103_n3_p298_Gurtler2023-06-08T15:01:52Z Effects of topical application of fipronil spot-on on dogs against the Chagas disease vector Triatoma infestans Chagas disease Disease vectors Dogs Fipronil Insecticides Triatoma infestans fipronil animal experiment article Chagas disease controlled study dog female insect control insecticidal activity male nonhuman parasite vector population dynamics population size Triatoma infestans Triatominae Trypanosoma cruzi vector control Administration, Topical Animals Argentina Chagas Disease Disease Reservoirs Dog Diseases Dogs Insecticides Pyrazoles Triatoma Canis familiaris Triatoma infestans Trypanosoma cruzi We assessed the insecticidal effects of fipronil spot-on applied to experimental dogs on the blood-feeding success and other vital parameters of the Trypanosoma cruzi vector Triatoma infestans. In the first trial, the cumulative mortality of 30 third or fourth instar nymphs exposed to eight fipronil-treated dogs differed significantly from those exposed to untreated dogs at 1 week post-treatment, but not at baseline or at 2-6 weeks post-treatment. In the second trial, the effects of multiple exposures to fipronil-treated dogs on bug population dynamics were assessed. A population of 80-84 bugs of various life stages were allowed to colonize eight closed experimental huts, and then exposed twice weekly to control or treated dogs over a period of 110 days and censused at monthly intervals. Throughout the trial, multiple exposure to fipronil did not significantly affect bug population size, fecundity, hatching, molting, survival, blood-feeding success and degree of engorgement. Only when engorgement was taken to include only fully fed bugs, did fipronil significantly reduce their degree of engorgement relative to bugs exposed to control dogs. We conclude that at tested dosages fipronil spot-on would have little effect in controlling (peri)domestic Tri. infestans or protecting dogs from contact with the bugs. © 2008 Royal Society of Tropical Medicine and Hygiene. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00359203_v103_n3_p298_Gurtler http://hdl.handle.net/20.500.12110/paper_00359203_v103_n3_p298_Gurtler |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Chagas disease Disease vectors Dogs Fipronil Insecticides Triatoma infestans fipronil animal experiment article Chagas disease controlled study dog female insect control insecticidal activity male nonhuman parasite vector population dynamics population size Triatoma infestans Triatominae Trypanosoma cruzi vector control Administration, Topical Animals Argentina Chagas Disease Disease Reservoirs Dog Diseases Dogs Insecticides Pyrazoles Triatoma Canis familiaris Triatoma infestans Trypanosoma cruzi |
| spellingShingle |
Chagas disease Disease vectors Dogs Fipronil Insecticides Triatoma infestans fipronil animal experiment article Chagas disease controlled study dog female insect control insecticidal activity male nonhuman parasite vector population dynamics population size Triatoma infestans Triatominae Trypanosoma cruzi vector control Administration, Topical Animals Argentina Chagas Disease Disease Reservoirs Dog Diseases Dogs Insecticides Pyrazoles Triatoma Canis familiaris Triatoma infestans Trypanosoma cruzi Effects of topical application of fipronil spot-on on dogs against the Chagas disease vector Triatoma infestans |
| topic_facet |
Chagas disease Disease vectors Dogs Fipronil Insecticides Triatoma infestans fipronil animal experiment article Chagas disease controlled study dog female insect control insecticidal activity male nonhuman parasite vector population dynamics population size Triatoma infestans Triatominae Trypanosoma cruzi vector control Administration, Topical Animals Argentina Chagas Disease Disease Reservoirs Dog Diseases Dogs Insecticides Pyrazoles Triatoma Canis familiaris Triatoma infestans Trypanosoma cruzi |
| description |
We assessed the insecticidal effects of fipronil spot-on applied to experimental dogs on the blood-feeding success and other vital parameters of the Trypanosoma cruzi vector Triatoma infestans. In the first trial, the cumulative mortality of 30 third or fourth instar nymphs exposed to eight fipronil-treated dogs differed significantly from those exposed to untreated dogs at 1 week post-treatment, but not at baseline or at 2-6 weeks post-treatment. In the second trial, the effects of multiple exposures to fipronil-treated dogs on bug population dynamics were assessed. A population of 80-84 bugs of various life stages were allowed to colonize eight closed experimental huts, and then exposed twice weekly to control or treated dogs over a period of 110 days and censused at monthly intervals. Throughout the trial, multiple exposure to fipronil did not significantly affect bug population size, fecundity, hatching, molting, survival, blood-feeding success and degree of engorgement. Only when engorgement was taken to include only fully fed bugs, did fipronil significantly reduce their degree of engorgement relative to bugs exposed to control dogs. We conclude that at tested dosages fipronil spot-on would have little effect in controlling (peri)domestic Tri. infestans or protecting dogs from contact with the bugs. © 2008 Royal Society of Tropical Medicine and Hygiene. |
| title |
Effects of topical application of fipronil spot-on on dogs against the Chagas disease vector Triatoma infestans |
| title_short |
Effects of topical application of fipronil spot-on on dogs against the Chagas disease vector Triatoma infestans |
| title_full |
Effects of topical application of fipronil spot-on on dogs against the Chagas disease vector Triatoma infestans |
| title_fullStr |
Effects of topical application of fipronil spot-on on dogs against the Chagas disease vector Triatoma infestans |
| title_full_unstemmed |
Effects of topical application of fipronil spot-on on dogs against the Chagas disease vector Triatoma infestans |
| title_sort |
effects of topical application of fipronil spot-on on dogs against the chagas disease vector triatoma infestans |
| publishDate |
2009 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00359203_v103_n3_p298_Gurtler http://hdl.handle.net/20.500.12110/paper_00359203_v103_n3_p298_Gurtler |
| _version_ |
1768543984272015360 |