Proceedings of the Hawaiian Entomological Society (2013) 45, 31-43

Luc Leblanc, Roger I. Vargas and Rudolph Putoa (2013)
From eradication to containment: Invasion of French Polynesia by Bactrocera dorsalis (Hendel) (Diptera: Tephritidae) and releases of two natural enemies: A 17-year case study
Proceedings of the Hawaiian Entomological Society 45, 31-43
Abstract: Four economic species of Bactrocera flies have sequentially invaded French Polynesia: B. kirki (Froggatt) in 1928, B. tryoni (Froggatt) in 1970, B. dorsalis (Hendel), detected on Tahiti in 1996, and B. xanthodes (Broun), detected on the Austral Islands in 1998. Following a failed attempt to eradicate B. dorsalis, documented in this paper, it became established and the dominant fruit fly, displacing B. kirki and B. tryoni. Two braconid parasitoids were introduced from Hawaii and established: Fopius arisanus (Sonan) (released in 2002) and Diachasmimorpha longicaudata (Ashmead) (released in 2007). By 2009 mean parasitism for fruit flies infesting common guava (Psidium guajava), Tahitian chestnut (Inocarpus fagifer), and tropical almond (Terminalia catappa) fruits on Tahiti was 70%, and 95% of the emerged parasitoids were F. arisanus. Numbers of B. dorsalis trapped from methyl eugenol and bred from guava, Tahitian chestnut and tropical almond have been reduced by 87%, 89%, 88%, and 91-94%, respectively, from the 2002-03 peaks.
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Database assignments for author(s): Roger I. Vargas, Luc Leblanc

Research topic(s) for pests/diseases/weeds:
review
Research topic(s) for beneficials or antagonists:
classical biocontrol/new introduction

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bactrocera dorsalis		French Polynesia
	Bactrocera xanthodes		French Polynesia
	Bactrocera tryoni		French Polynesia
	Bactrocera kirki		French Polynesia
Fopius arisanus (parasitoid)	Bactrocera dorsalis		French Polynesia
Diachasmimorpha longicaudata (parasitoid)	Bactrocera dorsalis		French Polynesia