By R. C. Muirhead-Thompson
Insect trapping is a uncomplicated box examine software for plenty of biologists, whether or not they are learning insect pests, disorder vectors or insect ecology for its personal sake. Any box entomologist considering a brand new insect trapping software or trying to increase or advance an present scheme will reap the benefits of this wide evaluate of flying insect traps, within which the writer attracts on a large choice of equipment utilized by diverse examine initiatives from everywhere in the world.
Over the years a good many traps were built and perpetually changed to fit specific species, habitats, and study requisites. In nearly each case the layout of the catch interacts with the explicit habit of the bugs concerned to bias capture potency. moreover, the restricted discussion among employees in several topic disciplines and habitats has prompted a scarcity of recent info to be had to box entomologists as an entire.
* Describes and evaluates the most equipment of trapping flying insects
* Brings jointly effects from agricultural/forest/pest reports and people from scientific entomology
Read Online or Download Trap Responses of Flying Insects. The Influence of Trap Design on Capture Efficiency PDF
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Additional resources for Trap Responses of Flying Insects. The Influence of Trap Design on Capture Efficiency
5 Influence of weather factors on light trap performance The influence of weather factors has been the subject of another recent investigation in England, in many ways complementary to the work just reviewed above (Gaydecki, 1984). In this study, in order to maximize the effect of weather variables, trapping was carried out in an exposed location rather than in a wood or garden. Previous light trapping work has mainly been done in sheltered locations, but such sites not only reduce the impact of winds, but give rise to air turbulence which is difficult to analyse.
Extension of light trapping studies to other geographical regions such as the USA, India, Australia and in particular the African tropics also extended knowledge of light trap reactions of moths to a wide range of species, including many important agricultural and forestry pests. In the course of that work, critical studies on all relevant aspects of moonlight and the lunar cycle in relation to light traps provided an essential baseline for unravelling this complex ecological problem. 2 Moonlight and the lunar cycle In the course of the regular 28 day lunar cycle from new moon, through full moon, back to new moon again, night-flying insects are exposed to a whole spectrum of variables involving the light factor.
Light traps 39 density was attained at a distance of about 40 cm from mid-point of the lamp. The study of the moth flight tracks showed the pattern of disorientation is manifested by increased angular velocity with simultaneous positive and negative acceleration, on approaching the light. Minimum speeds took place must often when a moth was flying towards the light, and the converse was often true of maximum speeds. It was also recorded that airspeeds of moths increased with increasing wind speeds as a result of the time spent in the downwind area of the light trap.