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1 December 2006 Irradiation as a Phytosanitary Treatment for White Peach Scale (Homoptera: Diaspididae)
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Abstract

Irradiation was examined as a potential phytosanitary treatment to control white peach scale, Pseudaulacaspis pentagona (Targioni-Tozzetti) (Homoptera: Diaspididae), a serious quarantine pest of papaya, Carica papaya L., in Hawaii. Dose–response tests were conducted with second-stage nymphs, adult females without eggs, and adult females with eggs at a series of irradiation doses between 60 and 150 Gy to determine the most tolerant stage. The adult female with eggs was the most tolerant stage. In large-scale validation tests 35,424 adult female scales with and without eggs irradiated at a dose of 150 Gy produced no F1 generation adults with eggs. Irradiation treatment with a minimum absorbed dose of 150 Gy should provide quarantine security for white peach scale on exported papaya and other commodities.

Peter A. Follett "Irradiation as a Phytosanitary Treatment for White Peach Scale (Homoptera: Diaspididae)," Journal of Economic Entomology 99(6), 1974-1978, (1 December 2006). https://doi.org/10.1603/0022-0493-99.6.1974
Received: 15 May 2006; Accepted: 1 August 2006; Published: 1 December 2006
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