Journal of Economic Entomology (2002) 95, 1169-1173

J. Larry Zettler, Peter A. Follett and Richard F. Gill (2002)
Susceptibility of Maconellicoccus hirsutus (Homoptera: Pseudococcidae) to methyl bromide
Journal of Economic Entomology 95 (6), 1169-1173
Abstract: Eggs, crawlers, early nymphs, late nymphs, and adults of the pink hibiscus mealybug, Maconellicoccus hirsutus (Green), were tested for their susceptibility to methyl bromide in 2-h laboratory fumigations at ambient conditions (25°C, 95% RH). Dose–response tests indicated that the egg was the most susceptible life stage with an LC₉₉ of 20.2 mg/liter. Based on probit analysis of dose–response data, no significant differences were observed among susceptibilities of the crawler, early stage or late stage nymphs, or adults at either the LC₅₀ or LC₉₉ level, but late stage nymphs were more tolerant than early stage nymphs in a separate paired comparison test. Confirmatory tests showed that a dose of 48 mg/liter methyl bromide, the USDA-Animal Plant Health Inspection Service treatment dose schedule for mealybugs at 21–26°C, produced 100% mortality of all life stages. On the basis of these results, we conclude that the methyl bromide treatment schedule for mealybugs will provide quarantine security for M. hirsutus infesting commodities for export or import.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Peter A. Follett, J. Larry Zettler

Research topic(s) for pests/diseases/weeds:
quarantine treatments/regulations/aspects

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Maconellicoccus hirsutus