Prospects for integrated control of olive fruit fly are promising in California

Collier, Timothy R.; Steenwyk, R. A. Van

doi:10.3733/ca.v057n01p28

Cited by 42 publications

(20 citation statements)

References 9 publications

(7 reference statements)

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“…The cost of pest control is Δn · p x , where p x (50V ha −1 ) is the cost per application of insecticide (43), and Δn is the change in the number of applications with I. The number of applications at a location increases linearly from an infestation threshold of I th = 4% (44) to a maximum n = 7 at I max = 85% (45). The net change in the number of applications (Δn) (Eq.…”

Section: Methodsmentioning

confidence: 99%

Fine-scale ecological and economic assessment of climate change on olive in the Mediterranean Basin reveals winners and losers

Ponti

Gutiérrez

Ruti

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

141

110

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The Mediterranean Basin is a climate and biodiversity hot spot, and climate change threatens agro-ecosystems such as olive, an ancient drought-tolerant crop of considerable ecological and socioeconomic importance. Climate change will impact the interactions of olive and the obligate olive fruit fly (Bactrocera oleae), and alter the economics of olive culture across the Basin. We estimate the effects of climate change on the dynamics and interaction of olive and the fly using physiologically based demographic models in a geographic information system context as driven by daily climate change scenario weather. A regional climate model that includes fine-scale representation of the effects of topography and the influence of the Mediterranean Sea on regional climate was used to scale the global climate data. The system model for olive/olive fly was used as the production function in our economic analysis, replacing the commonly used production-damage control function. Climate warming will affect olive yield and fly infestation levels across the Basin, resulting in economic winners and losers at the local and regional scales. At the local scale, profitability of small olive farms in many marginal areas of Europe and elsewhere in the Basin will decrease, leading to increased abandonment. These marginal farms are critical to conserving soil, maintaining biodiversity, and reducing fire risk in these areas. Our fine-scale bioeconomic approach provides a realistic prototype for assessing climate change impacts in other Mediterranean agro-ecosystems facing extant and new invasive pests.ecological impacts | economic impacts | species interactions | Olea europaea | desertification

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Section: Methodsmentioning

confidence: 99%

Fine-scale ecological and economic assessment of climate change on olive in the Mediterranean Basin reveals winners and losers

Ponti

Gutiérrez

Ruti

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

141

110

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“…These natural enemies do not adequately suppress B. oleae populations in commercial olives. Moreover, abundant landscape olive trees that are never treated with insecticides serve as reservoirs for the fly's reinvasion into treated commercial orchards (Collier and van Steenwyk 2003). The importation of more specialized B. oleae parasitoids may help suppress fly populations in these situations and thereby lessen levels of fruit damage in commercial orchards .…”

Section: Introductionmentioning

confidence: 99%

Comparative evaluation of two olive fruit fly parasitoids under varying abiotic conditions

et al. 2010

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Psyttalia lounsburyi (Silvestri) and P. humilis (Silvestri) (Hymenoptera: Braconidae) were evaluated in California for their potential to control the invasive olive fruit fly, Bactrocera oleae (Rossi) (Diptera: Tephritidae). Psyttalia lounsburyi is a specialist on B. oleae while P. humilis also attacks other tephritid species. Field cage trials, conducted from 2006 to 2009, were used to compare P. lounsburyi and two populations of P. humilis (Kenya and Namibia) in California's interior valley and coastal regions. Both parasitoid species reproduced on B. oleae in all trials. Under similar abiotic conditions, offspring production per female was higher in P. humilis than in P. lounsburyi, suggesting that host specificity by P. lounsburyi does not confer a higher efficiency on B. oleae in cultivated olives. Two abiotic factors were shown to impact parasitoid efficiency. First, adult parasitoid survival was poor during periods of high summer temperatures, common to the olive production areas in California's interior valleys. Second, parasitism levels were lower on B. oleae larvae feeding in larger Ascolano cv. fruit than in smaller Manzanillo cv. fruit. Results are discussed relative to biological control of B. oleae in commercial olives and the usefulness of natural enemies specialized to attack fruit flies in wild olives compared with the larger cultivated olive fruit.

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“…In the traditional olive-growing regions of Europe and the Middle East, the olive fruit fl y is the primary economic pest. B. oleae has become the most important pest of California olives (Collier and Van Steenwyk 2003;Daane et al 2005), and in commercial production control necessitates regular applications of insecticidal bait sprays from fruit-set through harvest.…”

mentioning

confidence: 99%

Understanding the seasonal and reproductive biology of olive fruit fly is critical to its management

Burrack¹,

Bingham²,

Price³

et al. 2011

Cal Ag

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Prospects for integrated control of olive fruit fly are promising in California

Cited by 42 publications

References 9 publications

Fine-scale ecological and economic assessment of climate change on olive in the Mediterranean Basin reveals winners and losers

Fine-scale ecological and economic assessment of climate change on olive in the Mediterranean Basin reveals winners and losers

Comparative evaluation of two olive fruit fly parasitoids under varying abiotic conditions

Understanding the seasonal and reproductive biology of olive fruit fly is critical to its management

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