Recruiting on the Spot: A Biodegradable Formulation for Lacewings to Trigger Biological Control of Aphids
AbstractUpon herbivory, plants release herbivore-induced plant volatiles (HIPVs), which induce chemical defenses in the plant as well as recruit natural enemies. However, whether synthetic HIPVs can be employed to enhance biological control in a cultivated crop in the field is yet to be explored. Here we show that a biodegradable formulation loaded with induced and food-signaling volatiles can selectively recruit the common green lacewing, Chrysoperla carnea, and reduce pest population under field conditions. In apple orchards, the new formulation attracted lacewing adults over a 4-week period, which correlated well with independent assessments of the longevity of the slow-release matrix measured through chemical analyses. In barley, lacewing eggs and larvae were significantly more abundant in treated plots, whereas a significant reduction of two aphid species was measured (98.9% and 93.6% of population reduction, for Sitobion avenae and Rhopalosiphum padi, respectively). Results show the potential for semiochemical-based targeted recruitment of lacewings to enhance biological control of aphids in a field setting. Further research should enhance selective recruitment by rewarding attracted natural enemies and by optimizing the application technique. View Full-Text
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Pålsson, J.; Thöming, G.; Silva, R.; Porcel, M.; Dekker, T.; Tasin, M. Recruiting on the Spot: A Biodegradable Formulation for Lacewings to Trigger Biological Control of Aphids. Insects 2019, 10, 6.
Pålsson J, Thöming G, Silva R, Porcel M, Dekker T, Tasin M. Recruiting on the Spot: A Biodegradable Formulation for Lacewings to Trigger Biological Control of Aphids. Insects. 2019; 10(1):6.Chicago/Turabian Style
Pålsson, Joakim; Thöming, Gunda; Silva, Rodrigo; Porcel, Mario; Dekker, Teun; Tasin, Marco. 2019. "Recruiting on the Spot: A Biodegradable Formulation for Lacewings to Trigger Biological Control of Aphids." Insects 10, no. 1: 6.
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