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dc.contributor.supervisor Costamagna, Alejandro C. (Entomology) en_US
dc.contributor.author Samaranayake, Kandanpita Galaddalage Lahiru Ishan
dc.date.accessioned 2017-08-29T15:16:43Z
dc.date.available 2017-08-29T15:16:43Z
dc.date.issued 2017
dc.identifier.uri http://hdl.handle.net/1993/32384
dc.description.abstract Landscape complexity and arthropod predators have been shown to play a major role in suppression of the soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae) in North America. I examined the impact of landscape complexity and patterns of predator movement between habitats on sentinel soybean aphid populations in 27 soybean fields in Manitoba over a two-year period. Predator movement was quantified using bi-directional Malaise traps and mark-release-recapture experiments. My results revealed that there was a strong to moderate suppression of soybean aphids across the gradient of landscape complexity studied. I found that predator movement between soybean and adjacent habitats was as important as landscape characteristics in explaining aphid suppression. My results indicate that the direction of predator movement in soybean field borders is influenced by the type of adjacent habitat and by predator identity. My findings highlight the importance of pest control services provided by aphidophagous predators in agricultural landscapes. en_US
dc.subject Landscape complexity en_US
dc.subject Insect predators en_US
dc.subject Predator movement en_US
dc.subject Aphid suppression en_US
dc.subject Aphis glycines en_US
dc.subject Glycine max en_US
dc.subject Syrphidae en_US
dc.subject Anthocoridae en_US
dc.subject Chrysopidae en_US
dc.subject Nabidae en_US
dc.subject Coccinellidae en_US
dc.subject Hemerobiidae en_US
dc.subject Coccinella septempunctata en_US
dc.subject Toxomerus marginatus en_US
dc.title Soybean aphid suppression and natural enemy movement in agricultural landscapes in Manitoba en_US
dc.degree.discipline Entomology en_US
dc.contributor.examiningcommittee Holliday, Neil J. (Entomology) Mason, Peter G. (Agriculture and Agri-Food Canada) Walker, David (Environment and Geography) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note October 2017 en_US


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