Open AccessSuspected Resistance to Methidathion in Aonidiella aurantii (Maskell) (Hemiptera: Diaspididae) from Queensland
Author(s) -
COLLINS P. J.,
LAMBKIN T. M.,
BODNARUK K. P.
Publication year - 1994
Publication title -
australian journal of entomology
Language(s) - English
Resource type - Journals
eISSN - 1440-6055
pISSN - 1326-6756
DOI - 10.1111/j.1440-6055.1994.tb01239.x
Subject(s) - methidathion , diaspididae , biology , pest analysis , instar , hemiptera , toxicology , veterinary medicine , horticulture , botany , homoptera , ecology , chlorpyrifos , pesticide , larva , medicine
The first indication of resistance to organophosphorus insecticides in red scale, Aonidiella aurantii , 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. Analysis 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.