Effects of a broad spectrum and biorational insecticides on parasitoids of the Nantucket pine tip moth (Lepidoptera: Tortricidae).
We examined effects of aerial application of acephate (Orthene), Bacillus thuringiensis variety kurstaki Berliner (Foray), and tebufenozide (Mimic) on larval/pupal parasitoids of the Nantucket pine tip moth, Rhyacionia frustrana (Comstock), in the southwestern Georgia coastal plain. Parasitism of tip moths in acephate-treated plots was significantly lower than in untreated plots. Bacillus thuringiensis and tebufenozide showed no significant effects on parasitism. A tachinid, Lixophaga mediocris Aldrich, comprised a significantly greater proportion of emerging parasitoids in acephate-treated than in untreated control plots, whereas a chalcidid, Haltichella rhyacioniae Gahan, was less abundant in the acephate-treated plots. Acephate has a negative, but somewhat species-specific, impact on tip moth parasitism.
McCravy
K W
KW
Department of Entomology, University of Georgia, Athens 30602, USA.
Dalusky
M J
MJ
Berisford
C W
CW
D000818:Animals; D001413:Bacillus thuringiensis; D006790:Host-Parasite Interactions; D006834:Hydrazines; D007300:Insect Control / Q000379:methods*; D007306:Insecticides; D007605:Juvenile Hormones; D009036:Moths / Q000469:parasitology*; D009946:Organothiophosphorus Compounds; D063088:Phosphoramides; D014197:Trees
D006834:Hydrazines; D007306:Insecticides; D007605:Juvenile Hormones; D009946:Organothiophosphorus Compounds; D063088:Phosphoramides; C001969:acephate; C082026:tebufenozide