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Francis Andrew Drummond
Gabriel Alnajjar
Judith Collins
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Gabriel Alnajjar
Judith Collins
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International Journal of Entomology and Nematology

Behavioral and preventative management of Drosophila suzukii Matsumura (Diptera: Drosophilidae) in Maine wild blueberry (Vaccinium angustifolium Aiton) through attract and kill trapping and insect exclusion-netting

Gabriel Alnajjar*, Judith Collins, and Francis A. Drummond

University of Maine, School of Biology and Ecology, Orono, ME, USA.

University of Maine, Cooperative Extension, Orono, ME, USA.

Accepted 12 November, 2016

Citation: Alnajjar G, Collins J, Drummond FA (2017). Behavioral and preventative management of Drosophila suzukii Matsumura (Diptera: Drosophilidae) in Maine wild blueberry (Vaccinium angustifolium Aiton) through attract and kill trapping and Insect exclusion-netting, International Journal of Entomology and Nematology 3(1): 051-061.

Copyright: © 2017 Alnajjar et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Abstract

The management of spotted wing drosophila (SWD) (Drosophila suzukii Matsumura) in small fruit agriculture continues to receive significant attention. While complementary monitoring and insecticidal application procedures can provide effective protection against this insect pest in some cropping systems, more sustainable alternatives are currently under development. In this investigation, we explored two methods of managing D. suzukii in Maine wild blueberry (Vaccinium angustifolium Aiton): 1) the efficacy of attract and kill trapping with volatile semio-chemicals and 2) the use of insect exclusion netting. We found that exclusion netting provided a high degree of protection against SWD larval infestations.  Consistent and significant reductions in larval infestations were observed during field trials conducted in 2014, 2015, and 2016. The second method, attract and kill trapping, appeared to reduce infestations in a preliminary trial in 2013. However, this result was not observed in a more thorough, replicated study in 2014. The capture rates of traps increased with trap deployment density in blueberry plots, suggesting that more traps per unit area concentrate flies in the local trapped area. As a result, a correlation existed between adult captures and larval infestation despite a contact poison (boric acid) coating the outside surface of the traps.

Keywords: Lowbush blueberry, wild blueberry, North America, Drosophila suzukii, Spotted Wing Drosophila, mass trapping, attract and kill, insect exclusion netting