OCCURRENCE OF CYHEXATIN AND DICOFOL RESISTANCE IN THE EUROPEAN RED MITE, <i>PANONYCHUS ULMI</i> (KOCH) (ACARI: TETRANYCHIDAE), IN SOUTHERN ONTARIO

Pree, D. J.; Wagner, H.

doi:10.4039/ent119287-3

Cited by 23 publications

(27 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Mites used in tests were from colonies maintained on peach Prunus persica Batch seedlings as described by Pree and Wagner (1987). Populations were held in separate rearing cabinets at 24 ± 2°C, 60% RH and 18L:6D photoperiod.…”

Section: Reference Strainsmentioning

confidence: 99%

“…Most of these represent new classes of chemistries, which are reported to have unique modes of action not previously exploited for control. We have previously documented resistance in populations of the European red mite from Ontario which are resistant to organochlorine compounds (dicofol), to organotins (fenbutatin oxide) and to the ovicides, clofentezine and hexythiazox (Pree and Wagner 1987;Pree et al 2002). Colonies of P. ulmi used in those studies have been maintained and selected in the laboratory for use in other studies.…”

Section: Introductionmentioning

confidence: 95%

See 1 more Smart Citation

Baseline Susceptibility and Cross Resistances of Some New Acaricides in the European Red Mite, Panonychus ulmi*

2005

View full text Add to dashboard Cite

We have developed baseline susceptibility values for four new acaricides: bifenazate, acequinocyl, spirodiclofen and etoxazole for eggs or adult females of a susceptible laboratory population of Panonychus ulmi (Koch) (Acari: Tetranychidae). Further, we have tested diagnostic concentrations of each acaricide against populations resistant to organochlorine, organotin or IGR-type acaricides. Resistance to etoxazole (ca. 4-fold) was identified in populations resistant to the IGRs clofentezine and hexythiazox.

show abstract

Section: Reference Strainsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Baseline Susceptibility and Cross Resistances of Some New Acaricides in the European Red Mite, Panonychus ulmi*

2005

View full text Add to dashboard Cite

show abstract

“…Such control failures have been reported for organophosphorus compounds (OPs) for many decades, and more recently to the newer compounds such as bromopropylate, clofentezine, cyhexatin, fenazaquin, fenpyroximate, hexythiazox, propargite and tebufenpyrad (e.g. Graham 1991;Pree and Wagner 1987;Whalon et al 2008).…”

Section: Introductionmentioning

confidence: 98%

Resistance to chlorpyrifos and lambda-cyhalothrin along with detoxifying enzyme activities in field-collected female populations of European red mite

et al. 2008

View full text Add to dashboard Cite

The levels of susceptibility of populations of the European red mite Panonychus ulmi (Koch) (Acarina: Tetranychidae) collected from apple orchards in the Bursa region of Turkey to the insecticides chlorpyrifos and lambda-cyhalothrin, were determined by a petri leaf disk-Potter spray tower method. When compared with the susceptible population, resistance ratios at the LC 50 level ranged from 6.0-to 35.6-fold, and from 0.7-to 5.7-fold for chlorpyrifos and lambda-cyhalothrin, respectively. Kinetic parameters of general esterase activity with α-naphthyl acetate as substrate indicated that an increased activity was present in the resistant populations compared with the susceptible populations. In these strains, 1.5-and 2.2-fold higher Glutathione Stransferase (GST) activity was also detected with the substrate 1-chloro-2,4-dinitrobenzene. General esterase activity gel profiles of these populations were studied by native polyacrylamide gel electrophoresis, but no relationship between resistance ratios and band patterns was detected. The results of this study document a decreased efficacy of chlorpyrifos and lambdacyhalothrin in field populations of P. ulmi in Turkey, possibly linked to altered activities of esterases and GST.

show abstract

“…Nos Estados Unidos, os casos de resistência aos acaricidas organoestânicos têm sido relatados em T. urticae e Panonycus ulmi Koch em fruteiras (Hoyt et al, 1985;Keena & Granett, 1987;Welty et al, 1987;Hoy et al, 1988;Tian et al, 1992). Casos de resistência de ácaros aos acaricidas organoestânicos também têm sido relatados no Canadá, com detecção de populações de P. ulmi resistentes ao cihexatin (Pree & Wagner, 1987) …”

Section: Introductionunclassified

Suscetibilidade de populações de Brevipalpus phoenicis (Geijskes, 1939) (Acari: Tenuipalpidae) a acaricidas organoestânicos em citros

Konno

Franco

Omoto

2001

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

RESUMO: Brevipalpus phoenicis (Geijskes, 1939) é uma das principais pragas da cultura de citros no Brasil. Os acaricidas organoestânicos representam mais 40% da área tratada de citros para o controle de B. phoenicis. O objetivo do presente trabalho foi o de coletar informações básicas para a implementação de um programa de manejo da resistência de B. phoenicis a acaricidas organoestânicos em pomares de citros do Estado de São Paulo preservando, dessa forma, a vida útil dos acaricidas deste grupo químico. Inicialmente, as linhas básicas de suscetibilidade aos acaricidas óxido de fenbutatin e cihexatin foram obtidas para uma população suscetível de referência de B. phoenicis através de um bioensaio de contato residual. Baseado na curva de concentração-resposta dessa população para os dois acaricidas, a concentração diagnóstica de 180 mg de [IA] L -1 de água destilada foi definida para ser utilizada em programas de monitoramento da suscetibilidade de populações de B. phoenicis a esses acaricidas. Posteriormente, foi realizado um levantamento da suscetibilidade aos acaricidas óxido de fenbutatin e cihexatin em 26 populações de B. phoenicis coletadas em pomares comerciais com diferentes regimes de uso de acaricidas organoestânicos nos últimos cinco anos. Todas as populações apresentaram suscetibilidade a óxido de fenbutatin e cihexatin semelhante ao da população suscetível de referência, com exceção de uma população que apresentou uma porcentagem de sobrevivência a cihexatin (10,7%) significativamente maior do que a da população suscetível (1,92%) na concentração diagnóstica. Portanto, apesar do intenso uso de acaricidas organoestânicos para controle de B. phoenicis em citros no Estado de São Paulo, as populações desse ácaro ainda apresentam uma alta suscetibilidade aos acaricidas óxido de fenbutatin e cihexatin. Palavras-chave: Citrus, óxido de fenbutatin, cihexatin, resitência, pesticidas SUSCEPTIBILITY OF Brevipalpus phoenicis (GEIJSKES, 1939) (ACARI: TENUIPALPIDAE) TO ORGANOTIN ACARICIDES IN CITRUSABSTRACT: Brevipalpus phoenicis (Geijskes, 1939) is one of the most important citrus pests in Brazil. Organotin acaricides represent more than 40% of the acaricide-treated citrus area for controlling B. phoenicis. For preserving the life-time of organotin acaricides, the objective of this research was to collect basic information for implementing a resistance management program of B. phoenicis to organotin acaricides in citrus groves from the State of São Paulo, Brazil. Initially, baseline susceptibility data of the susceptible reference population of B. phoenicis to fenbutatin oxide and cyhexatin were obtained with the use of a residual contact bioassay. Based on concentration-response data of this population to these acaricides, a diagnostic concentration of 180 mg of [AI] L -1 of distilled water was defined for both fenbutatin oxide and cyhexatin in order to be used in a program for monitoring the susceptibility of B. phoenicis to these acaricides. Then, a survey of the susceptibility to fenbutatin oxide and cyhexat...

show abstract

OCCURRENCE OF CYHEXATIN AND DICOFOL RESISTANCE IN THE EUROPEAN RED MITE, PANONYCHUS ULMI (KOCH) (ACARI: TETRANYCHIDAE), IN SOUTHERN ONTARIO

Cited by 23 publications

References 9 publications

Baseline Susceptibility and Cross Resistances of Some New Acaricides in the European Red Mite, Panonychus ulmi*

Baseline Susceptibility and Cross Resistances of Some New Acaricides in the European Red Mite, Panonychus ulmi*

Resistance to chlorpyrifos and lambda-cyhalothrin along with detoxifying enzyme activities in field-collected female populations of European red mite

Suscetibilidade de populações de Brevipalpus phoenicis (Geijskes, 1939) (Acari: Tenuipalpidae) a acaricidas organoestânicos em citros

Contact Info

Product

Resources

About