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The Influence of Predator Species Richness on Prey Mortality: Implications to Conservation Biological Control.

dc.contributor.advisorBarbosa, Pedroen_US
dc.contributor.authorLewins, Scott Asheren_US
dc.description.abstractUnderstanding how changes in biodiversity affect the function of agroecosystems is paramount to conservation biological control. The Species Assemblage Control Hypothesis predicts increasing species richness of predator assemblages can increase the assemblages' ability to suppress pests. I hypothesized that an increase in species richness of a predator assemblage leads to an increase in prey mortality and predator species identity can alter the relationship. An assemblage of predators identified from an assessment of a collard agroecosystem was evaluated to find that only some predators fed on larval Pieris rapae, they did not differ in their per capita consumption, and some intraguild predation occurred. In testing the hypotheses I found a significant relationship between predator species richness and prey mortality; however, predator species identity altered the relationship. These findings highlight the importance in understanding predator assemblages before conservation decisions that effectively suppress pests can be made.en_US
dc.format.extent543507 bytes
dc.titleThe Influence of Predator Species Richness on Prey Mortality: Implications to Conservation Biological Control.en_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.subject.pqcontrolledBiology, Entomologyen_US
dc.subject.pqcontrolledBiology, Ecologyen_US
dc.subject.pqcontrolledBiology, Entomologyen_US
dc.subject.pquncontrolledConservation Biological Controlen_US
dc.subject.pquncontrolledGeneralist Predatorsen_US
dc.subject.pquncontrolledSpecies Assemblage Control Hypothesisen_US
dc.subject.pquncontrolledEcosystem Functionen_US
dc.subject.pquncontrolledPieris rapaeen_US

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