Interspecific Competition of Almond Moth, Indian Meal Moth, and Raisin Moth in Malathion-Treated and Untreated Almonds13

Abstract

Interspecific competition of almond moth, Cadra caulella (Walker); Indian meal moth, Plodia interpunclella (Hübner); and raisin moth, Cadra figulilella (Gregson) was determined under laboratory conditions with and without malathion. In the absence of malathion, Indian meal moth was the predominant speeics. Almond and raisin moths were approximately equal in numbers. The Indian meal moths reduced the numbers of almond and raisin moths. Malathion produced different mortalities for the 3 species; the Indian meal moth was the most susceptible. As the Indian meal moth was reduced in numbers, the almond and raisin moths survived in greater numbers.