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queen excluder
In beekeeping, the queen excluder is a selective barrier inside the beehive that allows worker bees but not the larger queens and drones to traverse the barrier. Queen excluders are also used with some queen breeding methods. Some beekeepers believe that excluders lead to less efficient hives.
== Description ==
A queen excluder is a selective barrier inside the beehive that allows worker bees but not the larger queens and drones to traverse the barrier. Typically, the queen excluder is either a sheet of perforated metal or plastic or a wire grid in a frame with openings are limited to . Queen excluders can also be constructed of hardware cloth screen, of which #5 hardware cloth is often cited in references as sufficient for allowing worker bees to pass, but not queens.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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