Synergism of permethrin by formamidines in resistant and susceptible strains of Heliothis virescens: A comparison of chlordimeform, amitraz, and a metabolite
| dc.contributor.author | Mosupi, Pharoah Opelo Pedro, 1961- | |
| dc.creator | Mosupi, Pharoah Opelo Pedro, 1961- | en_US |
| dc.date.accessioned | 2013-04-03T13:29:07Z | |
| dc.date.available | 2013-04-03T13:29:07Z | |
| dc.date.issued | 1990 | en_US |
| dc.identifier.uri | http://hdl.handle.net/10150/278560 | |
| dc.description.abstract | Laboratory tests conducted to evaluate the ability of three formamidines (chlordimeform, amitraz, and N'-(2,4-dimethylphenyl)- N-methylformamidine SN-49844, a metabolite of amitraz) to synergize permethrin in tobacco budworm (TBW) showed no synergism in susceptible larvae, but did show synergism in resistant larvae. Chlordimeform (CDF) and N'-(2,4-dimethylphenyl)-N-methylformamidine SN-49844 showed higher degrees of synergism than amitraz. Selection of cross-bred larvae of tobacco budworm using permethrin ± formamidine mixtures at LD 80 for four generations produced strong tolerance to all agents used in the selection. A test for cross-resistance to cypermethrin and to methyl parathion in a permethrin-selected strain of tobacco budworm showed resistance levels of 58-fold, and 48-fold, respectively, compared with susceptible TBW. | |
| dc.language.iso | en_US | en_US |
| dc.publisher | The University of Arizona. | en_US |
| dc.rights | Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. | en_US |
| dc.subject | Biology, Entomology. | en_US |
| dc.title | Synergism of permethrin by formamidines in resistant and susceptible strains of Heliothis virescens: A comparison of chlordimeform, amitraz, and a metabolite | en_US |
| dc.type | text | en_US |
| dc.type | Thesis-Reproduction (electronic) | en_US |
| thesis.degree.grantor | University of Arizona | en_US |
| thesis.degree.level | masters | en_US |
| dc.identifier.proquest | 1342668 | en_US |
| thesis.degree.discipline | Graduate College | en_US |
| thesis.degree.name | M.S. | en_US |
| dc.identifier.bibrecord | .b26592770 | en_US |
| refterms.dateFOA | 2018-06-06T00:05:09Z | |
| html.description.abstract | Laboratory tests conducted to evaluate the ability of three formamidines (chlordimeform, amitraz, and N'-(2,4-dimethylphenyl)- N-methylformamidine SN-49844, a metabolite of amitraz) to synergize permethrin in tobacco budworm (TBW) showed no synergism in susceptible larvae, but did show synergism in resistant larvae. Chlordimeform (CDF) and N'-(2,4-dimethylphenyl)-N-methylformamidine SN-49844 showed higher degrees of synergism than amitraz. Selection of cross-bred larvae of tobacco budworm using permethrin ± formamidine mixtures at LD 80 for four generations produced strong tolerance to all agents used in the selection. A test for cross-resistance to cypermethrin and to methyl parathion in a permethrin-selected strain of tobacco budworm showed resistance levels of 58-fold, and 48-fold, respectively, compared with susceptible TBW. |
