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Kabir, Md. Faisal, 2012. The influence of plant sex on the performance of a detrimental herbivore and two biocontrol agents in the dioecious grey willow, Salix cinerea. Second cycle, A2E. Uppsala: SLU, Dept. of Ecology

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Abstract

Dioecious plants can be used as model systems for studying how variation in host plants affects plant-insect interactions. This thesis describes investigations into the impact of plant sex on plant-herbivore-predator interactions for the host plant Salix cinerea. Both herbivores and predators were found to prefer female plants, all other things being equal. As a result, top-down control had a more significant impact on the herbivore population on female plants than was the case for males. Despite this, Phratora beetles were more abundant on, and preferred, female plants. This may be due to bottom-up control, since female plants have longer leaves. Both herbivores and biocontrol agents were more abundant on female plants in the field. Because of predation by omnivores, survival rates for herbivore eggs on female plants were lower than those for male plants, and omnivore predation was the primary cause of death among herbivore eggs. These findings may provide novel opportunities for pest control in Salix short rotation coppices.

Main title:The influence of plant sex on the performance of a detrimental herbivore and two biocontrol agents in the dioecious grey willow, Salix cinerea
Authors:Kabir, Md. Faisal
Supervisor:Stenberg, Johan A.
Examiner:Hopkins, Richard
Series:Independent project/Degree project / SLU, Department of Ecology
Volume/Sequential designation:2012:13
Year of Publication:2012
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:NM004 Ecology - Master's Programme 120 HEC
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Keywords:plant sex, Salix, herbivore, omnivore, biocontrol, dioecious, Phratora vulgatissima, Anthocoris nemorum, Orthotylus marginalis
URN:NBN:urn:nbn:se:slu:epsilon-s-1435
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-1435
Subjects:Plant ecology
Pests of plants
Animal ecology
Language:English
Deposited On:27 Jul 2012 05:40
Metadata Last Modified:27 Jul 2012 05:40

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