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Insect traps are used to monitor or directly reduce populations of insects or other arthropods, by trapping individuals and killing them. They typically use food, visual lures, chemical attractants and pheromones as bait and are installed so that they do not injure other animals or humans or result in residues in foods or feeds.
[8] [9] [10] The most generally useful size in entomology is size 2, which is 0.46 millimetres (0.018 in) in diameter, with sizes 1 and 3 being the next most useful. [8] [9] They were once commonly made from brass or silver, but these would corrode from contact with insect bodies and are no longer commonly used. [8]
The opening to the cylinder is of key importance. Typically, the opening is around 12–15 mm (0.47–0.59 in), and can vary according to the size of insect desired. If using a dry agent, a smaller hole results in a faster death, limiting the amount of damage a newly caught insect can inflict on older, fragile specimens.
A pheromone trap is a type of insect trap that uses pheromones to lure insects. Sex pheromones and aggregating pheromones are the most common types used. A pheromone-impregnated lure is encased in a conventional trap such as a bottle trap, delta trap, water-pan trap, or funnel trap.
A bottle trap is a type of baited arboreal insect trap for collecting either prized or harmful frugivorous beetles, especially flower beetles, [1] [2] leaf chafers and longhorn beetles [2] as well as wasps [3] and other unwanted flying insects.
A flight interception trap (or FIT) is a widely used trapping, killing, and preserving system for flying insects. It is especially well-suited for collecting beetles , since these animals usually drop themselves after flying into an object, [ 1 ] rather than flying upward (in which case a Malaise trap is a better option).
Thus, while the imperial fluid ounce is 3.924% smaller than the US fluid ounce, the imperial gallon, quart, pint and gill are all 20.095% larger than their US fluid measure counterparts. [ e ] One avoirdupois ounce of water has an approximate volume of one imperial fluid ounce at 62 °F (16.67 °C) [ f ] : this convenient fluid-ounce-to ...
A Barber pitfall trap, designed to catch small epigeic animals, particular arthropods. A pitfall trap is a trapping pit for small animals, such as insects, amphibians and reptiles. Pitfall traps are a sampling technique, mainly used for ecology studies and ecologic pest control. [1] Animals that enter a pitfall trap are unable to escape.
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