Predation by Coccinella septempunctata and Harmonia axyridis (Coleoptera: Coccinellidae) on Aphis glycines (Homoptera: Aphididae)

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Predation by Coccinella septempunctata and Harmonia axyridis (Coleoptera: Coccinellidae) on Aphis glycines (Homoptera: Aphididae)

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dc.contributor.author Xue, Y.
dc.contributor.author Bahlai, C.A.
dc.contributor.author Frewin, A.
dc.contributor.author Sears, M.K.
dc.contributor.author Schaafsma, A.W.
dc.contributor.author Hallett, R.H.
dc.date.accessioned 2011-03-10T00:29:25Z
dc.date.available 2011-03-10T00:29:25Z
dc.date.issued 2009
dc.identifier.citation Xue, Y., Bahlai, C.A., Frewin, A., Sears, M.K., Schaafsma, A.W., and Hallett, R.H. "Predation by Coccinella septempunctata and Harmonia axyridis (Coleoptera: Coccinellidae) on Aphis glycines (Homoptera: Aphididae)." Environmental Entomology 38.3 (2009) 708-714
dc.identifier.uri http://hdl.handle.net/10214/2493
dc.description.abstract Coccinella septempunctata L. and Harmonia axyridis Pallas are key natural enemies of soybean aphid, Aphis glycines Matsumura, in North America. Third instars, adult females, and adult males of both C. septempunctata and H. axyridis exhibited a type II functional response for predation toward adult soybean aphids at 26 1 C. In C.septempunctata, the functional response curve of adult males differed from those of third instars and adult females, but there was no difference between third instars and adult females. In H. axyridis, the functional response curves of larvae, adult females, and adult males all differed significantly. Third instars and adult females consumed significantly more soybean aphids than did adult males at prey densities of 150 and 180 aphids per arena for C. septempunctata and at prey densities of 60, 90, 120, 150, and 180 aphids per arena for H. axyridis. The theoretical maximum daily predation rate of adult aphids by C. septempunctata was predicted to be 204 per third instar, 277 per adult female, and 166 per adult male, and 244, 156, and 73, respectively, for H. axyridis. Third instars and adult females of both species consumed significantly more aphids than did adult males on soybean plants with the recommended action threshold of 250 soybean aphids per plant. Both C. septempunctata and H. axyridis have high predation capacities and are important in suppressing soybean aphid populations.
dc.language.iso en en_US
dc.publisher Environmental Entomology en_US
dc.subject functional response en_US
dc.subject biological control en_US
dc.subject seven-spotted lady beetle en_US
dc.subject multicolored Asian lady beetle en_US
dc.subject soybean aphid en_US
dc.title Predation by Coccinella septempunctata and Harmonia axyridis (Coleoptera: Coccinellidae) on Aphis glycines (Homoptera: Aphididae) en_US
dc.type Article en_US


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