Density and distribution of soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae) in response to UV radiation

Abstract

Increasing ultraviolet radiation (UV) has led to greater interest in its current and potential effects on organisms, including herbivorous insects. Here we report the short-term effects of UV on soybean aphids (Aphis glycines Matsumura), a common phytophagous pest of soybeans. We used two complementary approaches to examine how modifying UV radiation affects this phloemfeeding herbivore via changes to soybean aphid densities and their within plant distribution. We found that artificially adding UV in a lab setting decreased soybean aphid population size compared to a low UV control; however, blocking UV radiation in the field had minimal effects on aphid density. Further observations suggest that soybean aphid location could mediate UV effects; feeding on the underside of leaves may shield aphids from some harmful effects of UV. Our results demonstrate the potential importance of UV to insect herbivores and how behavior may influence such effects.

Impact of soybean trichomes on Aphis glycines (Hemiptera: Aphididae) and their interaction with natural enemy abundance and predation

“…However, we did measure the response of A. glycines' distribution on all of the soybean varieties. Soybean leaves have been observed blocking approximately 94% of ultra violet (UV) rays in a lab setting where 6-12% of the A. glycines population was found on the tops of leaves, 34-45% on the underside of leaves, and the remaining on stems and/or new growth (Burdick et al 2015). Our data showed that A. glycines distribution was in agreement with the majority on the leaves (Fig.…”

Can narrow-bandwidth light from UV-A to green alter secondary plant metabolism and increase Brassica plant defenses against aphids?

“…brassicae on broccoli plants [ 6 , 22 , 25 ]. In another study, UV-A treatments reduced the reproduction of soybean aphids [ 36 ]. Illumination of Brussels sprout plants with additional LED-generated UV-A radiation (259 kJ m -2 d -1 ) in a greenhouse increased the concentrations of 3-indolylmethyl glucosinolate in the plants and reduced the fecundity of B .…”

Denkkader licht : Naar een effectief gebruik van LED belichting in de glastuinbouw

“…Door weg te kruipen, bijvoorbeeld door zich te vestigen aan de onderkant van het blad, kunnen plagen zich beschermen tegen de schadelijke UV-B straling (e.g. Burdick et al 2015). Van deze gegevens is door Japanse onderzoekers gebruikgemaakt door het combineren van UV-B lampen met reflecterende doeken ('flash-spun nonwoven fabric sheets') (Sakai andOsakabe 2010, Tanaka et al 2016).…”