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Skip to Search Results- 7Biological control
- 3Food web
- 1Acyrthosiphon pisum
- 1Arthropod community dynamics
- 1Bacillus thuringiensis
- 1Beauveria bassiana
- 2Lewis, M.A.
- 1Barrion, Alberto, T.
- 1Cohen, M. B.
- 1Cohen, Michael, B.
- 1De-Camino-Beck, T.
- 1Fortin, Barbra Linda
- 6Biological Sciences, Department of
- 5Biological Sciences, Department of/Journal Articles (Biological Sciences)
- 3Graduate and Postdoctoral Studies (GPS), Faculty of
- 3Graduate and Postdoctoral Studies (GPS), Faculty of /Theses and Dissertations
- 1Biological Sciences, Department of/Other Publications (Biological Sciences)
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Effects of Bacillus thuringiensis on non-target herbivore and natural enemy assemblages in tropical irrigated rice
Download2003
Cohen, Michael, B., Gaolach, Bradley, Viagante, Vicente D., Zhang, Wenjun, Schoenly, Kenneth G., Barrion, Alberto, T.
Endotoxins from Bacillus thuringiensis (Bt) produced in transgenic pest-resistant Bt crops are generally not toxic to predatory and parasitic arthropods. However, elimination of Bt-susceptible prey and hosts in Bt crops could reduce predator and parasitoid abundance and thereby disrupt biological...
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In vivo and in vitro evaluation of Beauveria bassiana pathogenicity for western flower thrips, Frankliniella occidentalis [MSc Dissertation]
Download2007
Western flower thrips, Frankliniella occidentalis, are major pests in greenhouses. The fungus Beauveria bassiana is a safer alternative to use of chemical insecticides against this insect; and evaluating isolates for high virulence has usually involved in vivo studies. My approach examines in...
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Integrated pest management of Sitona lineatus L. (Coleoptera: Curculionidae) in crops of Pisum sativum L. (Fabales: Fabaceae) in Western Canada
DownloadFall 2010
Sitona lineatus L. (Coleoptera: Curculionidae) is a pest of Pisum sativum L. (Fabales: Fabaceae) and managing it is a challenge because of its fecundity, migratory behavior and concealed larval habitat. Potential components of an integrated pest management program for S. lineatus were...
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Intrinsic rate of increase and temperature coefficients of the aphid parasite Ephedrus californicus baker (Hymenoptera: Aphidiidae)
Download1987
The demographic statistics and the temperature requirements for development of Ephedrus californicus Baker were determined under constant laboratory conditions. At 23°C, females provided each day with forty 2nd-instar pea aphids, Acyrthosiphon pisum (Harris), lived for 13.4 days and laid 1193...
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2008
De-Camino-Beck, T., Lewis, M.A.
Understanding the relationship between life-history patterns and population growth is central to demographic studies. Here we derive a new method for calculating the timing of reproductive output, from which the generation time and its variance can also be calculated. The method is based on the...
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2009
Hillen, T., Lewis, M.A., Lee, J.M.
In this paper, we consider spatial predator–prey models with diffusion and prey-taxis. We investigate necessary conditions for pattern formation using a variety of non-linear functional responses, linear and non-linear predator death terms, linear and non-linear prey-taxis sensitivities, and...
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Spring 2010
I investigated, water, invertebrates and fishes from lakes in Banff National Park and Kananaskis Country, Alberta for selenium (Se), an element known to be toxic to vertebrates. At some depths, Se concentrations in sediment exceeded recognized thresholds for bird and fish reproductive...
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Fall 2017
Ground beetles (Coleoptera: Carabidae) are important components of temperate agroecosystems, and contribute many ecological services including weed seed predation. Although their role as arthropod predators is well known, their contributions to weed biological control through seed predation and...
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Trophic Relations of the Red-Necked Grebe on Lakes in the Western Boreal Forest: A Stable-Isotope Analysis.
Download2004
Tonn, W. M., Klatt, P. H., Paszkowski, C. A., Gingras, B. A., Wilcox, K.
We compared trophic ecology of grebes inferred from stable-isotope analysis to that from gut contents, and compared isotopic ratios of Red-necked Grebes (Podiceps grisegena) from lakes differing in their food webs. Analyses of different grebe tissues (egg yolk and albumen, pectoral and leg...