Insecticidal activity of bioproducts on Ceratitis capitata Wiedemann (Diptera: Tephritidae)

The toxicity of essential oils from the citrus peel has been proposed as the major resistance mechanism offered by citrus to fruit fly infestation. We evaluated the insecticidal activity of the ether extracts from the lemon (Citrus limon [L.] Burm.) and grapefruit (C. paradisi Macfadyen) peel as well as from limonene and citral against Anastrepha fraterculus (Wiedemann) and Ceratitis capitata (Wiedemann) immature stages. We also evaluated the toxicity of the extracts at two ripening stages. Extracts proved toxic to A. fraterculus egg and larvae. The lemon and grapefruit extracts showed the same toxicity in both fruit fly species. For A. fraterculus eggs, citral was more toxic than limonene; for larvae, they showed equal toxicity. Anastrepha fraterculus eggs were more sensitive than C. capitata eggs. In conclusion, we provide evidence of chemical resistance mechanisms that could account for the nonhost condition of lemon for A. fraterculus.

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Biopesticide effects on pupae and adult mortality ofAnastrepha fraterculusandCeratitis capitata(Diptera: Tephritidae)

Oviedo¹,

Nieuwenhove

et al. 2017

Austral Entomology

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Reliance on broad spectrum insecticides for pest control has led to significant environmental damage, human health problems and rapid evolution of insect resistance. These shortcomings have caused a renewed interest in exploring biologically based pest control methods. Among these, the use of plant essential oils, hydrolates and other natural products offer a promising alternative to broad spectrum pesticides. Here, we explored the effect of several bioproducts on pupal and adult mortality (through contact and ingestion) of the two most important pest species of fruit production in South America, South American fruit fly, Anastrepha fraterculus and Medfly, Ceratitis capitata. Topical application of different bioproducts produced different effects on pupal mortality of A. fraterculus and C. capitata. Essential oils of Baccharis dracunculifolia and Pinus elliottii, both containing high proportions of α and β‐pinene and limonene (among other compounds), caused 100% mortality on C. capitata pupae and strongly suppressed adult eclosion of A. fraterculus in comparison with controls. Extracts of Solanum granulosum plus Ricinus communis also caused a moderate yet significant reduction in adult eclosion when compared with the control. All other tested products had no effect on adult emergence. Toxicity on adults through ingestion was greatest for extracts of S. granulosum plus R. communis, followed by Spinosad (Flipper®) and B. dracunculifolia oil (although in these two cases survival was above 40%), while other tested products had no effect on adult mortality. We discuss future research and the potential use of some of the tested products as a component for rational pest management strategies.

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Insecticidal activity of bioproducts on Ceratitis capitata Wiedemann (Diptera: Tephritidae)

Cited by 7 publications

References 23 publications

Evaluation of kaolin and cinnamon essential oil to manage two pests and a fungal disease of sour cherry at different tree canopy levels

Evaluation of kaolin and cinnamon essential oil to manage two pests and a fungal disease of sour cherry at different tree canopy levels

Toxic Effect of Citrus Peel Constituents on Anastrepha fraterculus Wiedemann and Ceratitis capitata Wiedemann Immature Stages

Biopesticide effects on pupae and adult mortality ofAnastrepha fraterculusandCeratitis capitata(Diptera: Tephritidae)

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