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Contributions to integrated management of synanthropic spiders

Resource type
Thesis type
(Thesis) M.P.M.
Date created
2023-06-26
Authors/Contributors
Abstract
Arachnophobia, an irrational fear of spiders, is a prevalent anxiety disorder causing harmless synanthropic spiders to be viewed as pests that must be controlled. The objective of my thesis was to explore tactics other than pesticide applications for managing synanthropic spiders. Studying cues that affect settling decisions by cob-web spiders, I found that web architecture, rather than spider silk or silk-borne chemicals, affects settling decisions by females of the false black widow spider, Steatoda grossa. Investigating potential natural repellents for spiders in a multi-trophic context, I found that herbivore-induced plant volatiles are deterrent to S. grossa, but not to other spiders. As ants prey on spiders, I also explored the effects of ant chemical cues on avoidance responses of spiders. I found that chemical deposits of European fire ants, Myrmica rubra, deterred S. grossa, Western black widows, Latrodectus hesperus, hobo spiders, Eratigena agrestis, and – to some extent – cross spiders, Araneus diadematus.
Document
Extent
65 pages.
Identifier
etd22533
Copyright statement
Copyright is held by the author(s).
Permissions
This thesis may be printed or downloaded for non-commercial research and scholarly purposes.
Supervisor or Senior Supervisor
Thesis advisor: Gries, Gerhard
Language
English
Member of collection
Download file Size
etd22533.pdf 1.46 MB

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