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ARS Home Pacific West Area Hilo, Hawaii Daniel K. Inouye U.S. Pacific Basin Agricultural Research Center Tropical Crop and Commodity Protection Research Research Publications at this Location





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Title:   Author  item
                                            Follett, Peteritem
                                            Zee, Francisitem
                                            HAMASAKI, RANDALL - University Of Hawaiiitem
                                            Hummer, Kimitem
                                            NAKAMOTO, STUART - University Of Hawaii
  Submitted to: Journal of Economic Entomology
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 12/20/2010
                                    Publication  Date: 4/1/2011
                                    Citation: Follett, P.A., Zee, F.T., Hamasaki, R.T., Hummer, K.E., Nakamoto, S.T. 2011. Susceptibility of low-chill blueberry cultivars to oriental fruit fly, mediterranean fruit fly, and melon fly (Diptera: Tephritidae). Journal of Economic Entomology. 104:566-570.Interpretive Summary: Southern highbush blueberry (Vaccinium corymbosum L., Fam. Ericaceae) is a new potentially high-value niche crop for Hawaii (Zee et al. 2006, Hummer et al. 2007). Hawaii-grown blueberries are ripe at times United States mainland berries are unavailable, and could be used to supply local markets or shipped to the U.S mainland to compete with Central and South America blueberries.  Forced infestation studies were conducted to determine if fruits of southern highbush blueberries are hosts for three invasive tephritid fruit flies. Fruits of 17 blueberry cultivars were exposed to gravid female flies of Bactrocera dorsalis (oriental fruit fly), Ceratitis capitata (Mediterranean fruit fly), or Bactrocera cucurbitae (melon fly). Each of the blueberry cultivars tested were infested by oriental fruit fly and Mediterranean fruit fly, confirming that blueberry fruit can be attacked by these fruit flies, and that blueberry is a suitable host for fly development. However, there was significant cultivar variation in susceptibility to fly infestation.  Blueberry was a marginal host for melon fly. This information will aid in development of pest management recommendations for blueberry cultivars as planting of low-chill cultivars expands to areas with subtropical and tropical fruit flies. Planting of fruit fly resistant cultivars may result in lower infestation levels and less crop loss. Breeders may wish to use genotypes with lower susceptibility as parents to develop new cultivars adapted to locations where these flies are found.
                                Technical Abstract:  Forced infestation studies were conducted to determine if fruits of southern highbush blueberries (Vaccinium corymbosum L. hybrids) are hosts for three invasive tephritid fruit flies. Fruits of 17 blueberry cultivars were exposed to gravid female flies of Bactrocera dorsalis (Hendel) (oriental fruit fly), Ceratitis capitata (Wiedemann) (Mediterranean fruit fly), or Bactrocera cucurbitae (Coquillet) (melon fly) in screen cages outdoors for 6 h, and then held on sand in the laboratory for 2 weeks for pupal development and adult emergence. Each of the blueberry cultivars tested were infested by oriental fruit fly and Mediterranean fruit fly, confirming that blueberry fruit can be attacked by these fruit flies, and that blueberry is a suitable host for fly development. However, there was significant cultivar variation in susceptibility to fly infestation. For oriental fruit fly, ‘Sapphire’ fruit produced an average of 1.42 puparia per gram which was twice as high as that of the next most susceptible cultivar, ‘Emerald’ (0.70 puparia/g). ‘Legacy,’ ‘Biloxi.’ and ‘Spring High’ were least susceptible to infestation, producing only 0.20 to 0.25 oriental fruit fly puparia per gram of fruit. For Mediterranean fruit fly, ‘Blue Crisp’ produced 0.50 puparia per gram of fruit, whereas ‘Sharpblue’ produced only 0.03 puparia per gram of fruit. Blueberry was a marginal host for melon fly. This information will aid in development of pest management recommendations for blueberry cultivars as planting of low-chill cultivars expands to areas with subtropical and tropical fruit flies. Planting of fruit fly resistant cultivars may result in lower infestation levels and less crop loss. Breeders may wish to use genotypes with lower susceptibility as parents to develop new cultivars adapted to locations where these flies are found.


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