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Open AccessArticle

Effect of UV-Absorbing Nets on the Performance of the Aphid Predator Sphaerophoria rueppellii (Diptera: Syrphidae)

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BioNostrum Pest Control S.L., C/Martillo 40A San Vicente del Raspeig, 03690 Alicante, Spain
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Instituto de Ciencias Agrarias (ICA-CSIC), C/Serrano 115 dpdo., 28006 Madrid, Spain
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Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora” (IHSM-UMA-CSIC), Avenida Dr. Wienberg, s/n, Algarrobo-Costa, 29750 Malaga, Spain
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Centro Iberoamericano de la Biodiversidad (CIBIO-UA), Carretera San Vicente del Raspeig s/n, San Vicente del Raspeig, 03690 Alicante, Spain
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Author to whom correspondence should be addressed.
Insects 2020, 11(3), 166; https://doi.org/10.3390/insects11030166
Received: 28 January 2020 / Revised: 24 February 2020 / Accepted: 3 March 2020 / Published: 5 March 2020
(This article belongs to the Special Issue Natural Enemies and Biological Control of Plant Pests)
Photoselective nets have proven to be effective for aphid pest control as they limit their dispersal ability. However, little is known on the impact of such nets on natural enemies of aphids. In this work, we study the effect of UV-absorbing nets on the syrphid fly Sphaerophoria rueppellii Wiedemann (Diptera: Syrphidae), a commercially available aphid biocontrol agent in Mediterranean horticultural crops. First, we released mature syrphid adults and evaluated density and dispersal of the resulting immatures in a turnip crop grown under either UV-blocking (Bionet) or standard net. Second, we assessed, under controlled conditions, the impact of UV radiation on fitness-related parameters, and on flight behavior of S. rueppellii adults. Results showed that, while syprhid immature density was higher, their dispersion was reduced under Bionet. UV-absorbing nets are known to influence the dispersion pattern of aphids, which may have indirectly conditioned the distribution of their predator S. rueppellii. On the other hand, the type of net had no influence on the performance of adults. We conclude that the use of photoselective nets and the release of syrphid predators such S. rueppellii are compatible strategies to be used in IPM aphid-control programs. View Full-Text
Keywords: Syrphidae; UV-absorbing net; fitness; density; dispersion; foraging behavior Syrphidae; UV-absorbing net; fitness; density; dispersion; foraging behavior
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MDPI and ACS Style

Amorós-Jiménez, R.; Plaza, M.; Montserrat, M.; Marcos-García, M.Á.; Fereres, A. Effect of UV-Absorbing Nets on the Performance of the Aphid Predator Sphaerophoria rueppellii (Diptera: Syrphidae). Insects 2020, 11, 166.

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