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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

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Title: 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
Authors: Leblanc, Luc
Vargas, Roger I.
Putoa, Rudolph
Keywords: Oriental fruit fly, competitive displacement, biological control, area- wide suppression, Fopius arisanus, Diachasmimorpha longicaudata.
Issue Date: Dec 2013
Publisher: Hawaiian Entomological Society
Citation: Proc Hawaiian Ent Soc (2013) 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, displac- ing 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.
URI/DOI: http://hdl.handle.net/10125/31001
ISSN: 0073-134X
Rights: Attribution-NonCommercial-NoDerivs 3.0 United States
Appears in Collections:Volume 45 - December 2013 : Hawaiian Entomological Society



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