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Sex pheromone identification, spectral sensitivity, and colour preferences of select native and invasive click beetles (Coleoptera: Elateridae) in Canada

Resource type
Thesis type
(Thesis) M.P.M.
Date created
2023-05-23
Authors/Contributors
Abstract
My objectives were (1) to identify the sex pheromones of the click beetles Agriotes ferrugineipennis and A. mancus (Coleoptera: Elateridae), (2) analyze the spectral sensitivity of nine elaterids in electrophysiological recordings, and (3) analyze the color preference of two invasive Agriotes species in field and laboratory-behavioural bioassays. Captures of A. ferrugineipennis males in traps baited with 7-Methyloctyl 7-methyloctanoate exceeded those of unbaited control traps, on average by nearly 1,200 times. While in a second experiment, lures containing geranyl butanoate and geranyl hexanoate captured significantly more A. mancus males than the unbaited controls. All beetles proved most sensitive to green (515–538 nm) and ultra-violet (UV) light (~360 nm) and in four-choice bioassay arenas beetles were preferentially attracted to green and blue LEDs. In field experiments, Vernon Pitfall Traps® fitted with a green, blue or white LED captured significantly more male and female Agriotes lineatus and A. obscurus than dark control traps.
Document
Extent
111 pages.
Identifier
etd22511
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
etd22511.pdf 6.35 MB

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