Effects of carbon dioxide, acetone and 1-octen-3-ol on the activity of the stable fly, Stomoxys calcitrans
1997
Schofield, S. | Witty, C. | Brady, J.
The responses of Stomoxys calcitrans (L.) to carbon dioxide, acetone and 1-octen-3-ol were assessed using flight activity as a measure of activation. Carbon dioxide and acetone caused significant increases in activity, with thresholds at approximately 0.006% and approximately 0.01 micrograms l-1, respectively. For 1-octen-3-ol, flight activity decreased at 2 micrograms l-1 for males, and at 0.2 micrograms l-1 for females. Variation in activity was also manifest as differences in the time elapsed between landing and subsequent take-off: CO2 (7.1 s) and acetone (12.2 s) had lower times than the corresponding no-odour controls (16.6 and 23.2 s), whereas 1-octen-3-ol (25 s) had a higher time than the control (21.5 s). The proportion of the total number of flights landing on a black target was higher in CO2 (0.16) and acetone (0.11) than in clear air (c. 0.07), but was lower for 1-octen-3-ol.
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