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A TIMING TRAP FOR SEGREGATING CATCHES OF INSECTS BY DISCRETE INTERVALS

Published online by Cambridge University Press:  31 May 2012

Helmut Riedl  and
B. A. Croft
Helmut Riedl
Affiliation:
Department of Entomological Sciences, University of California, Berkeley 94720
B. A. Croft
Affiliation:
Department of Entomological Sciences, University of California, Berkeley 94720
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Extract

Timing traps are widely used to study the diurnal flight activity of insects, their response rhythms to physical and chemical (olfactory) stimuli, and the effect of weather factors on these behaviors. Goetz (1941) used an adhesive-coated horizontal metal disk driven by a mechanical clock to determine the periodicity of male-female attraction in two lepidopterous species on grapes. The area of the disk exposed at any time corresponded to a 1-h sector of the clock dial. The disk completed a full revolution every 12 h and therefore the trap had to be checked twice a day. Also, since the clock speed was not variable, the trapping interval could only be adjusted by decreasing or increasing the opening to the sticky disk.

Type
Articles
Information
The Canadian Entomologist , Volume 113 , Issue 8 , August 1981 , pp. 765 - 768
Copyright
Copyright © Entomological Society of Canada 1981

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References

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