Modeling Distribution and Abundance of Soybean Aphid in Soybean Fields Using Measurements From the Surrounding Landscape

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Modeling Distribution and Abundance of Soybean Aphid in Soybean Fields Using Measurements From the Surrounding Landscape

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dc.contributor.author Bahlai, C.A.
dc.contributor.author Sikkema, S.
dc.contributor.author Hallett, R.H.
dc.contributor.author Newman, J.
dc.contributor.author Schaafsma, A.W.
dc.date.accessioned 2011-03-10T00:25:07Z
dc.date.available 2011-03-10T00:25:07Z
dc.date.issued 2010-02
dc.identifier.citation Bahlai, C.A., Sikkema, S., Hallett, R.H., Newman, J., and Schaafsma, A.W. "Modeling Distribution and Abundance of Soybean Aphid in Soybean Fields Using Measurements From the Surrounding Landscape." Environmental Entomology 39.1 (2010): 50-56
dc.identifier.uri http://hdl.handle.net/10214/2492
dc.description.abstract Soybean aphid (Aphis glycines Matsumura) is a severe pest of soybean in central North America. Outbreaks of the aphid in Ontario are often spotty in distribution, with some geographical areas affected severely and others with few or no aphid populations occurring in soybean for the duration of the season. A. glycines spend summers on soybean and overwinter on buckthorn, a shrub that is widespread in southern Ontario and is commonly found in agricultural hedgerows and at the margins of woodlots. A. glycines likely use both short distance migratory flights from buckthorn and longer distance dispersal flights in the search for acceptable summer hosts. This study aims to model colonization of soybean fields by A. glycines engaged in early-season migration from overwintering hosts. AkaikeÕs information criterion (AIC) was used to rank numerous competing linear and probit models using field parameters to predict aphid presence, colonization, and density. The variable that best modeled aphid density in soybean Þelds in the early season was the ratio of buckthorn density to Þeld area, although dramatic differences in relationships between the parameters were observed between study years. This study has important applications in predicting areas that are at elevated risk of developing economically damaging populations of soybean aphid and which may act as sources for further infestation.
dc.language.iso en en_US
dc.publisher Environmental Entomology en_US
dc.subject Aphis glycines en_US
dc.subject Rhamnus cathartica en_US
dc.subject hedgerow en_US
dc.subject model selection en_US
dc.title Modeling Distribution and Abundance of Soybean Aphid in Soybean Fields Using Measurements From the Surrounding Landscape en_US
dc.type Article en_US


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