Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Methyl bromide fumigation of Tongan watermelons against Bactrocera xanthodes (Diptera: Tephritidae) and analysis of quarantine security.

Abstract

A methyl bromide quarantine fumigation schedule of 32 g/m3 for 4 h at 21-26°C and under normal atmospheric pressure is reported for watermelons grown in Tonga and shipped to New Zealand. This fumigation schedule is effective against Bactrocera xanthodes, which was recorded from watermelons for the first time in 1985. A work plan permitting resumption of watermelon trade from Tonga to New Zealand specifies production, culling, inspection, treatment, holding and transport conditions which must be fulfilled to ensure that defined maximum pest limits are not exceeded.