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Table 1 Difference amongst countries in criteria to declare a fruit fly incursion, the size of the area to be treated and for declaring eradication (c 2015)

From: Establishing criteria for the management of tephritid fruit fly outbreaks

Criteria New Zealand system
(for Bactrocera tryoni and Bactrocera dorsalis)
Australian system
(for Bactrocera tryoni)
Californian system
(for Bactrocera dorsalis)
Trigger for a fruit fly incursion Detection of any juvenile life stage found in locally ground fruit or gravid female fly for eradication
OR
Detection of 1 or more* adult male flies for eradication
* depends on the circumstance of the finds
Detection of any juvenile life stage found in locally ground fruit or gravid female fly for eradication
OR
Detection of 5 or more adult male flies in 14 days within 1 km radius
Detection of any juvenile life stage found in locally ground fruit or gravid female fly for eradication
OR
Detection of 6 (urban) or 8 (commercial) adult (non-gravid) flies within 28 days and 4.8 km
Size of ERZ Depends on the circumstance of the eradication and largely dictated by trading partners 15 km radius 8.2 km radius
Declaring a Successful Eradication Depends on the circumstance of the eradication and largely dictated by trading partners The greater period of trapping with zero flies detected (of any life stage) within the ERZ@:
One generation (egg to egg) plus 4 weeks
OR
12 weeks
(No minimum trapping density is specified)
Three fruit fly generations (egg to egg) with zero flies detected (of any life stage)
(No minimum trapping density is specified)