Carbon Dioxide, Methane, and Synthetic Cattle Breath Volatiles Attract Host-Seeking Stable Flies, Stomoxys calcitrans.

Autor: Kovacs EM; Department of Biological Sciences, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada. emma_kovacs@sfu.ca., Pinard C; Department of Biological Sciences, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada., Gries R; Department of Biological Sciences, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada., Manku A; Department of Biological Sciences, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada., Gries G; Department of Biological Sciences, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada.
Jazyk: angličtina
Zdroj: Journal of chemical ecology [J Chem Ecol] 2024 Nov; Vol. 50 (11), pp. 643-653. Date of Electronic Publication: 2024 May 29.
DOI: 10.1007/s10886-024-01502-0
Abstrakt: Stable flies, Stomoxys calcitrans (L.), are blood-feeding ectoparasites of cattle. Host-seeking stable flies respond to various cattle host cues, but a potential role of cattle breath gases [carbon dioxide (CO 2 ), methane (CH 4 )] and cattle breath volatiles (acetone, isoprene, 2-butanone, 2-propanol, propionic acid, 3-methyl butyric acid, phenol), alone or in combination, on host-seeking behavior of stable flies has not yet been comprehensively investigated. In laboratory and greenhouse experiments, we tested the hypotheses that (1) CO 2 and CH 4 interactively attract stable flies, (2) CO 2 'gates' attraction of stable flies to CH 4 , and (3) breath volatiles on their own, or in combination with both CO 2 and CH 4 , attract stable flies. In Y-tube olfactometer experiments, the blend of CH 4 (0.5%) and CO 2 (1%) in breathing air ('b-air') attracted significantly more female flies than CH 4 , or CO 2 , in b-air. The flies' responses to CH 4 were contingent upon their prior or concurrent exposure to CO 2 . In two-choice experiments in a large greenhouse compartment, significantly more flies landed on the host-look-alike barrel that disseminated a blend of CO 2 and CH 4 in b-air (CO 2 /CH 4 /b-air) than on the barrel disseminating either b-air or CO 2 . Moreover, significantly more flies landed on the barrel that disseminated synthetic breath volatiles (SBVs) than on the barrel disseminating b-air. The blend of CO 2 /CH 4 /b-air and SBVs elicited more fly landings on barrels than CO 2 /CH 4 /b-air but not than SBVs. SBVs, possibly combined with both CH 4 and CO 2 , could be developed as a lure to enhance trap captures of stable flies in livestock production facilities.
(© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
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