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| Registros recuperados: 14 | |
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| BARROS, A. T. M.; GOMES, A.; KOLLER, W. W.. |
| Horn flies from wild populations were collected on cattle and exposed to filter papers impregnated with cypermethrin, permethrin, or diazinon and mortality was assessed after two hours. Resistance to cypermethrin was detected in all populations, with resistance ratios (RR) ranging from 27.6 to 91.3-fold. Permethrin bioassays provided apparently low levels of resistance (RR<5), however, resistant flies were found in 96.9% of the populations based on diagnostic concentrations. From both pyrethroid bioassays, resistance was detected in 97.4% of the populations. On the other hand, a high susceptibility to diazinon (RR d 1.1) was detected in all populations. Pyrethroid products, most cypermethrin (92.3%) and deltamethrin (66.7%), were used in all ranches... |
| Tipo: Artigo de periódico |
Palavras-chave: Mosca-do-chifre; Piretróide; Mato Grosso do Sul; Brasil; Horn flies; Pyrethroid; Organophosphate.; Haematobia Irritans; Sanidade Animal.; Resistência a Pesticida; Animal health; Brazil; Pesticide resistance.. |
| Ano: 2007 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/326335 |
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| CAMPAGNOLLA, C.; PLAPP JUNIOR, F. W.. |
| Third-instar tobacco budworms, Heliothis, susceptible or resistant to pyrethroids were tested by exposure to residues of insecticides in glass liquid scintilillation vials. These biossays were done to find alternative insecticides or insecticide combinations for control of larvae resistant to pyrethroids, to evaluate the effect of synergists on insecticide toxicity and resistance, and to establish the main mechanisms of resistance present. Insecticides effective for control of resistant third-instar tobacco budworms included profenofos, sulprofos, acephate, endusulfan, methomyl, and thiodicarb. Cypermethrin combined with chlordimeform, piperonyl butoxide nor chlordimeform produced more thenfive-fold synergism. The only synergistic insecticide combination... |
| Tipo: Separatas |
Palavras-chave: Bugs; Insecticide; Pyrethroid; Resistence; Susceptibility; Insect; Pest; Tobacco budworms; Heliothis Virescens; Lepidoptera; Noctuidae; Chemical control; Synergism; Toxicity. |
| Ano: 1989 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/9883 |
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| Fernandes,F.F.. |
| In order to monitor the susceptibility of Boophilus microplus to acaricides and improve control measures, the effects of cypermethrin, deltamethrin and permethrin on larvae obtained in the city of Goiânia in the Brazilian state of Goiás were studied. Although these pyrethroids are already sold as acaricides, their cost-benefit efficiency has been questioned. Fasting 14-21 day-old larvae were immersed in solutions of the acaricides under test, maintained at 27±1° C, and relative humidity over 80%, and observed under the stereoscope within an apparatus originally designed for studying the non-parasitic phase of the tick life cycle. The observed toxicological effects were: excitability, repetitive motion, decreased motor ability, detachment, paralysis,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ixodidae; Boophilus microplus; Tick control; Pyrethroid; Acaricide resistance. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352001000500004 |
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| Pereira,Alexandre Igor Azevedo; Ramalho,Francisco de Sousa; Bandeira,Catarina de Medeiros; Malaquias,José Bruno; Zanuncio,José Cola. |
| Podisus nigrispinus (Dallas) (Heteroptera: Pentatomidae) was exposed to gammacyhalothrin to study the stimulatory effect of low concentrations of this pyrethroid. The doses studied were 23.4375, 11.7188, 5.8594, 2.9297, 1.4648, 0.7324 mg.litre-1 and water, as control. The third, fourth, and fifth instars of P. nigrispinus were shorter with all the doses of this insecticide. The survival and longevity of this predator was highest with the lowest doses. The oviposition period of P. nigrispinus decreased as the doses increased. The lowest pre-and postoviposition periods were found with 11.7188 mg.litre-1 of gammacyhalothrin. The dose 0.7324 mg.litre-1 increased the clutch interval. The egg viability was similar between the treatments. The number of eggs per... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Predator; Pyrethroid; Stink bug; Hormesis; Biology. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500013 |
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| RODRIGUES, S. R.; SANCHES, C. S.; FIALHO, E. M. L. M.; ISMAEL, A. P. K.; BARROS, A. T. M. de. |
| A mosca-dos-chifres é considerada um sério problema econômico à pecuária devido aos prejuízos causados à produção e gastos com controle. Este estudo objetivou conhecer o perfil da comercialização e uso dos produtos inseticidas para controle da mosca-dos-chifres no município de Aquidauana, MS. De nov/1999 a nov/2000, informações foram obtidas em estabelecimentos agropecuários na cidade de Aquidauana e em entrevistas com produtores rurais e gerentes de fazendas. Um total de 29 produtos indicados para o controle da mosca foram encontrados nos estabelecimentos, pertencentes aos grupos dos piretróides (58,6%), organofosforados (3,4%), fenil pirazoles (3,4%), lactonas macrocíclicas (3,4%) e associações entre inseticidas (31,0%). A cipermetrina foi o princípio... |
| Tipo: Folhetos |
Palavras-chave: Mosca-dos-chifres; Controle; Organofosforado; Piretróide; Aquidauana; Conjtrol; Insecticide; Organophosphate; Pyrethroid; Resistance; Haematobia Irritans; Inseticida; Resistência. |
| Ano: 2002 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/810751 |
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| Blanc, Mélanie; Cormier, Bettie; Hyötyläinen, Tuulia; Krauss, Martin; Scherbak, Nikolai; Cousin, Xavier; Keiter, Steffen H.. |
| Transgenerational effects induced by environmental stressors are a threat to ecosystems and human health. However, there is still limited observation and understanding of the potential of chemicals to influence life outcomes over several generations. In the present study, we investigated the effects of two environmental contaminants, coumarin 47 and permethrin, on exposed zebrafish (F0) and their progeny (F1–F3). Coumarin 47 is commonly found in personal care products and dyes, whereas permethrin is used as a domestic and agricultural pyrethroid insecticide/insect repellent. Zebrafish (F0) were exposed during early development until 28 days post-fertilization and their progeny (F1–F3) were bred unexposed. On one hand, the effects induced by coumarin 47... |
| Tipo: Text |
Palavras-chave: Pyrethroid; Endocrine disrupter; Epigenetic; Transgenerational; Neurotoxic. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00652/76393/77411.pdf |
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| Gonçalves,José R.; Faroni,Lêda R.D'A.; Guedes,Raul N.C.; Oliveira,Carlos R.F. de. |
| The presence of natural enemies in stored grains and the need of pest control alternatives led to the assessment of the effect of insecticides on the mite species Acarophenax lacunatus (Cross & Krantz), an egg parasite of the stored grain pest Rhyzopertha dominica (Fabr.). The insecticides bifenthrin, deltamethrin, pirimiphos-methyl and fenitrothion were tested at 0.4, 0.5, 0.8 and 10 ppm, respectively. Insecticide treated wheat grains were spread in petri dishes and infested with 25 adults of R. dominica. Seven days later, three mites were added to each dish, in four replicates. The number of adults of R. dominica, grain weight loss and instantaneous rate of increase (r i) of A. lacunatus were lower when the grain was treated with deltamethrin.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stored grain pest; Mite; Pyrethroid; Organophosphate; Biological control. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000200016 |
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| Chernaki-Leffer,Andreia Mauruto; Sosa-Gómez,Daniel Ricardo; Almeida,Lúcia M.; Lopes,Ivani de Oliveira Negrão. |
| Susceptibility of Alphitobius diaperinus (Panzer) (Coleoptera, Tenebrionidae) to cypermethrin, dichlorvos and triflumuron in southern Brazil. The lesser mealworm, Alphitobius diaperinus (Panzer), is an important insect pest in poultry houses in Brazil. Susceptibility of the lesser mealworm collected from eight poultry houses in Paraná state, southern Brazil, was evaluated for cypermethrin, dichlorvos and triflumuron. Adult A. diaperinus were tested in bioassays with cypermethrin and dichlorvos. Larvae were fed rabbit feed wetted with a triflumuron-water solution. Concentration-mortality regressions were estimated using Probit analysis and resistance ratios were calculated based on the susceptible population. Among the field populations evaluated,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insect growth regulator; Lesser mealworm; Poultry house; Pyrethroid; Organophosphates. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000100020 |
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| Registros recuperados: 14 | |
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