SearchSkip to Search Results
- 7Biological control
- 1Acyrthosiphon pisum
- 1Arthropod community dynamics
- 1Bacillus thuringiensis
- 1Beauveria bassiana
- 1Ecological statistics
- 2Lewis, M.A.
- 1Barrion, Alberto, T.
- 1Cohen, M. B.
- 1Cohen, Michael, B.
- 1De-Camino-Beck, T.
- 1Gaolach, Bradley
Effects of Bacillus thuringiensis on non-target herbivore and natural enemy assemblages in tropical irrigated riceDownload
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...
In vivo and in vitro evaluation of Beauveria bassiana pathogenicity for western flower thrips, Frankliniella occidentalis [MSc Dissertation]Download
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...
Integrated pest management of Sitona lineatus L. (Coleoptera: Curculionidae) in crops of Pisum sativum L. (Fabales: Fabaceae) in Western CanadaDownload
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...
Intrinsic rate of increase and temperature coefficients of the aphid parasite Ephedrus californicus baker (Hymenoptera: Aphidiidae)Download
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...
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...
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...
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...