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Classification | Beekeeping |
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Used with | Langstroth hive |
Inventor | Petro Prokopovych |
Manufacturer | various |
In beekeeping, 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. The bars have a distance of 4.2 millimeters. The barrier grid was probably invented around 1890.
The purpose is to prevent the queen from moving from the brood chamber to the honey chamber. There she would lay her eggs between storage cells with honey, so that bee larvae or eggs would get into the honey during centrifuging.
Queen excluders are also used with some queen breeding methods.
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 0.163 inches (4.1 mm). 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.
The intent of the queen excluder is to limit the queen's access to the honey supers. If the queen lays eggs in the honey supers and a brood develops in them it is difficult to harvest clean honey. It makes fall management more difficult. Queen excluders are removed in the autumn; otherwise, the queen would not be able to move with the winter cluster and would die from exposure. A replacement queen can be difficult to introduce because the bees will not be accustomed to the new queen's pheromones. New queens can be killed by the hive. Therefore, the death of a queen in winter is dangerous for a hive and can be expensive for a beekeeper.
Queen excluders are used with some queen breeding methods, especially as a way to allow queen cells to be built in the same hive with an existing queen, or as a way to house multiple queens in the same hive. [1] [ page needed ]
Some beekeepers [ who? ] who oppose the use of queen excluders claim that excluders lead to less efficient hives as the worker bees, which are not used to flying through the eliminator, are intimidated and stay in the lower brood box. This leads to rapid filling of the brood box and overcrowding, which eventually leads to swarming of the hive. Professional beekeepers, who have been using queen eliminators as an essential part of their beekeeping method for a century, report otherwise.
A honey bee is a eusocial flying insect within the genus Apis of the bee clade, all native to mainland Afro-Eurasia. After bees spread naturally throughout Africa and Eurasia, humans became responsible for the current cosmopolitan distribution of honey bees, introducing multiple subspecies into South America, North America, and Australia.
A beehive is an enclosed structure in which some honey bee species of the subgenus Apis live and raise their young. Though the word beehive is used to describe the nest of any bee colony, scientific and professional literature distinguishes nest from hive. Nest is used to discuss colonies that house themselves in natural or artificial cavities or are hanging and exposed. The term hive is used to describe an artificial/man-made structure to house a honey bee nest. Several species of Apis live in colonies. But for honey production, the western honey bee and the eastern honey bee are the main species kept in hives.
Beekeeping is the maintenance of bee colonies, commonly in man-made beehives. Honey bees in the genus Apis are the most commonly kept species but other honey producing bees such as Melipona stingless bees are also kept. Beekeepers keep bees to collect honey and other products of the hive: beeswax, propolis, bee pollen, and royal jelly. Other sources of beekeeping income include pollination of crops, raising queens, and production of package bees for sale. Bee hives are kept in an apiary or "bee yard".
In beekeeping, bee brood or brood refers to the eggs, larvae and pupae of honeybees. The brood of Western honey bees develops within a bee hive. In man-made, removable frame hives, such as Langstroth hives, each frame which is mainly occupied by brood is called a brood frame. Brood frames usually have some pollen and nectar or honey in the upper corners of the frame. The rest of the brood frame cells may be empty or occupied by brood in various developmental stages. During the brood raising season, the bees may reuse the cells from which brood has emerged for additional brood or convert it to honey or pollen storage. Bees show remarkable flexibility in adapting cells to a use best suited for the hive's survival.
A queen bee is typically an adult, mated female (gyne) that lives in a colony or hive of honey bees. With fully developed reproductive organs, the queen is usually the mother of most, if not all, of the bees in the beehive. Queens are developed from larvae selected by worker bees and specially fed in order to become sexually mature. There is normally only one adult, mated queen in a hive, in which case the bees will usually follow and fiercely protect her.
A top-bar hive is a single-story frameless beehive in which the comb hangs from removable bars. The bars form a continuous roof over the comb, whereas the frames in most current hives allow space for bees to move up or down between boxes. Hives that have frames or that use honey chambers in summer but which use management principles similar to those of regular top-bar hives are sometimes also referred to as top-bar hives. Top-bar hives are rectangular in shape and are typically more than twice as wide as multi-story framed hives commonly found in English-speaking countries. Top-bar hives usually include one box only, and allow for beekeeping methods that interfere very little with the colony. While conventional advice often recommends inspecting each colony each week during the warmer months, heavy work when full supers have to be lifted, some beekeepers fully inspect top-bar hives only once a year, and only one comb needs to be lifted at a time.
A drone is a male bee. Unlike the female worker bee, a drone has no stinger. He does not gather nectar or pollen and cannot feed without assistance from worker bees. His only role is to mate with a maiden queen in nuptial flight.
In modern American beekeeping, a Langstroth hive is any vertically modular beehive that has the key features of vertically hung frames, a bottom board with entrance for the bees, boxes containing frames for brood and honey and an inner cover and top cap to provide weather protection. In a Langstroth hive, the bees build honeycomb into frames, which can be moved with ease. The frames are designed to prevent bees from attaching honeycombs where they would either connect adjacent frames, or connect frames to the walls of the hive. The movable frames allow the beekeeper to manage the bees in a way which was formerly impossible.
A hive frame or honey frame is a structural element in a beehive that holds the honeycomb or brood comb within the hive enclosure or box. The hive frame is a key part of the modern movable-comb hive. It can be removed in order to inspect the bees for disease or to extract the excess honey.
Swarming is a honey bee colony's natural means of reproduction. In the process of swarming, a single colony splits into two or more distinct colonies.
Hive management in beekeeping refers to intervention techniques that a beekeeper may perform to ensure hive survival and to maximize hive production. Hive management techniques vary widely depending on the objectives.
A nuc, or nucleus colony, is a small honey bee colony created from larger colonies, packages, or captured swarms. A nuc hive is centered on a queen bee, the nucleus of the honey bee colony.
This page is a glossary of beekeeping.
Petro Prokopovych was a Ukrainian revolutionary, beekeeper, the founder of commercial beekeeping and the inventor of the first movable frame hive. He introduced novelties in traditional beekeeping that allowed great progress in the practice. Among his most important inventions was a hive frame in a separate honey chamber of his beehive. He also invented a crude queen excluder between brood and honey chambers. Petro Prokopovych was also the first to ever model a 'bee beard' after delineating and calculating 'bee swarm behaviour", inspiring students for generations.
In beekeeping, the Demaree method is a swarming prevention method. It was first published by George Demaree (1832–1915) in an article in the American Bee Journal in 1892. Demaree also described a swarm prevention method in 1884, but that was a two-hive system that is unrelated to modern "demareeing".
A Cloake board is a piece of equipment used in beekeeping to facilitate raising queen bees. Invented by New Zealander Henry Cloake, the Cloake board consists of a queen excluder mounted to a wooden frame. The wooden frame contains a slot which allows a "temporary" floor to be inserted.
The Stewarton hive is a type of historical bee hive. Extra boxes below allowed expansion of the brood, and thus strongly inhibited swarming and any tendency for the queen to enter the honey boxes, while expansion with extra honey boxes above the brood area gave ample space for the bees to create surplus honey stores that were easily harvested by the beekeeper. The introduction of this hive is credited to Robert Kerr, of Stewarton, Ayrshire, in 1819.
The western honey bee or European honey bee is the most common of the 7–12 species of honey bees worldwide. The genus name Apis is Latin for "bee", and mellifera is the Latin for "honey-bearing" or "honey carrying", referring to the species' production of honey.
A Jenter kit or Karl Jenter kit is a piece of equipment used by beekeepers to raise large numbers of queen honeybees.
Tetragonula carbonaria is a stingless bee, endemic to the north-east coast of Australia. Its common name is sugarbag bee. They are also occasionally referred to as bush bees. The bee is known to pollinate orchid species, such as Dendrobium lichenastrum, D. toressae, and D. speciosum. It has been identified as an insect that collects pollen from the cycad Cycas media. They are also known for their small body size, reduced wing venation, and highly developed social structure comparable to honey bees.