Suspected Resistance to Methidathion in Aonidiella aurantii (Maskell) (Hemiptera: Diaspididae) from Queensland

Abstract

The first indication of resistance to organophosphorus insecticides in red scale, Aonidiella auranlii, from Australia is noted from the Mundubbera region, Queensland. Samples of scale-infested fruit were dipped in a commercial formulation of methidathion and the mortality of sessile first instars was recorded. Analy+\ of variance revealed that two populations contained significant numbers of first instars surviving the insecticide treatment. Presence of resistance to methidathion in red scale populations would limit its usefulness in pest management programs and may indicate cross-resistance to other organophosphates.

Mating disruption of California red scale, Aonidiella aurantii Maskell (Homoptera: Diaspididae), using biodegradable mesoporous pheromone dispensers

“…The economic importance of this armoured scale is due to the fruit damage and the cost of the management tools to defeat it, as well as the difficulty in efficiently applying insecticide treatments. Traditional chemical control of CRS, including fumigation with hydrocyanic acid (HCN)7, 8 at the beginning of the last century, and subsequently the use of organophosphate and carbamate insecticides,9–11 has been affected by the development of resistance to insecticides. Consequently, growers have had to rely on new integrated and biological control programmes.…”

Role of Esterase Enzymes in Monitoring for Resistance of California Red Scale, <I>Aonidiella aurantii</I> (Homoptera: Diaspididae), to Organophosphate and Carbamate Insecticides

“…This pest has developed resistance to organophosphate and carbamate insecticides in South Africa (Georgala 1975(Georgala , 1988Nel et al 1979), Australia (Collins et al 1994), and California (Vehrs and GraftonCardwell 1994;Grafton-Cardwell and Vehrs 1995;Grafton-Cardwell et al 1997, 2001. The standard bioassay method for testing resistance in this pest consists of dipping Þrst instar scale-infested green citrus fruit in insecticide solutions and evaluating scale mortality after molting (Ϸ10 d) (Walker et al 1991).…”

Uso de semioquímicos en el control de plagas. Estudios básicos y de aplicación

“…Sin embargo, está ampliamente demostrado que estos diaspinos han sido capaces de desarrollar resistencias contra numerosos insecticidas utilizados para su control, tales como organofosforados y carbamatos (Yust et al, 1943a;Yust et al, 1943b;Collins et al, 1994;Grafton-Cardwell y Vehrs, 1995;Grafton-Cardwell et al, 1998). Debido a este fenómeno, el uso de aceites minerales como estrategia de control está ampliamente expandido, a pesar de ser potencialmente fitotóxicos (Grout y Richards, 1991a;Grafton-Cardwell y Reagan, 1995;Tan et al, 2005;Urbaneja et al, 2008).…”

“…traditional chemical control is affected by the development of resistances to insecticides, such as hydrocyanic acid, chlorpyrifos, or methidation (Yust et al, 1943a;Collins et al, 1994;Grafton-Cardwell and Vehrs, 1995;Levitin and Cohen, 1998). Consequently, efforts have been directed to the introduction of new integrated and biological control programs.…”

“…Traditional chemical control for CRS has been affected by the development of resistances to insecticides, including fumigation with hydrocyanic acid (HCN) in the beginning of the last century (Yust et al, 1943a,b), and the use of organophosphate and carbamate insecticides (Collins et al, 1994;Grafton-Cardwell and Vehrs, 1995;Grafton-Cardwell et al, 1998).…”