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pheromones science and humans
By: Added: 31-01-12
Introduction Honeybees have one of the most complex pheromonal communication systems found in nature, possessing 15 known glands that produce an array of compounds. Pheromones are produced as a liquid and transmitted by direct contact as a liquid or as a vapor. Pheromones may be volatile or non-volatile. The pheromones are chemical messengers secreted by a queen, drone, worker bee or laying worker bee that elicit a response in other bees. The chemical messages are received by the bee's antenna and other body parts. Honey bee (Apis mellifera) pheromones can be grouped into releaser pheromones with short term effects and primer pheromones with long term effects. Primer pheromones change the physiology of the recipient. Releaser pheromones change the behavior of the recipient. Releaser pheromones have a short term effect and they trigger an almost immediate behavioral response from the receiving bee. Under certain conditions a pheromone can act as both a releaser and primer pheromone. Pheromones are NOT single chemicals, but rather a complex mixture of numerous chemicals in different percentages. Types of Honeybee Pheromones Alarm pheromone Two main alarm pheromones have been identified in honeybee workers. One is released by the Koschevnikov gland, near the sting shaft, and consists of more than 40 chemical compounds, including isopentyl acetate (IPA), butyl acetate, 1-hexanol, n-butanol, 1-octanol, hexyl acetate, octyl acetate, n-pentyl acetate and 2-nonanol. These chemical compounds have low molecular weights, are highly volatile, and appear to be the least specific of all pheromones. Alarm pheromones are released when a bee stings another animal, and attract other bees to the location and causes the other bees to behave defensively, i.e. sting or charge. Smoke can mask the bees' alarm pheromone. The other alarm pheromone is released by the mandibular glands and consists of purchasing pheromones online 2-heptanone, which is also a highly volatile substance. This compound has a repellent effect and it was proposed that it is used to deter potential enemies and robber bees. Interestingly, the amounts of 2-heptanone increase with the age of bees and becomes higher in the case of foragers. It was therefore suggested that 2-heptanone is used by foragers to scent-mark recently visited and depleted foragers, which indeed are avoided by foraging bees. Brood recognition pheromone Another pheromone is responsible for preventing worker bees from bearing offspring in a colony that still has developing young. Both larvae and pupae emit a "brood recognition" pheromone. This inhibits ovarian development in worker bees and helps nurse bees distinguish worker larvae from drone larvae and pupae. This pheromone is a ten-component blend of fatty-acid esters, which also modulates adult caste ratios and foraging ontogeny dependent on its concentration. The components of brood pheromone have been shown to vary with the age of the developing bee. An artificial brood pheromone was invented by Yves Le Conte, Leam Sreng, Jrome Trouiller, and Serge Henri Poitou and patented in 1996. Drone pheromone Drones produce a pheromone that attracts other flying drones to promote drone aggregations at sites suitable for mating with virgin queens. Dufour's gland pheromone The Dufour gland (named after the French naturalist Lon Jean Marie Dufour) opens into the dorsal vaginal wall. Dufour gland and its secretion have been somewhat of a mystery. The gland secretes its alkaline products in to the vaginal cavity, and it has been assumed to be deposited on the eggs as they are laid. Indeed, Dufour secretions allow worker bees to distinguish between eggs laid by the queen, which are attractive, and those laid by workers. The complex of as many as 24 chemicals differs between workers in "queenright" colonies and workers of queenless colonies. In the latter, the workers Dufour secretions are similar to those of a healthy queen. The secretions of workers in queenright colonies are long-chain alkanes with odd numbers of carbon atoms, but those of egg-laying queens and egg-laying workers of queenless colonies also include long chain esters. Egg marking pheromone This pheromone, similar to that described above, helps nurse bees distinguish between eggs laid by the queen bee and eggs laid by a laying worker. Footprint pheromone This pheromone is left by bees when they walk and is useful in enhancing Nasonov pheromones in searching for nectar. In the queen, it is an oily secretion of the queen's tarsal glands that is deposited on the comb as she walks across it. This inhibits queen cell construction (thereby inhibiting swarming), and its production diminishes as the queen ages. Forager pheromone Ethyl oleate is released by older forager bees to slow the maturing of nurse bees. This primer pheromone acts as a distributed regulator to keep the ratio of nurse bees to forager bees in the balance that is most beneficial to the hive. Nasonov pheromone This pheromone is emitted by the worker bees and used for orientation. Other pheromones Other pheromones produced by most honeybees include rectal gland pheromone, tarsal pheromone, wax gland and comb pheromone, and tergite gland pheromone. Types of Queen Honeybee Pheromones Queen mandibular pheromone (QMP) QMP, emitted by the queen, is one of the most important sets of pheromones in the bee hive. It affects social behaviour, maintenance of the hive, swarming, mating behaviour, and inhibition of ovary development in worker bees. The effects can be short and/or long term. Some of the chemicals found in QMP are carboxylic acids and aromatic compounds. The following compounds have been shown to be important in retinue attraction of workers to their queen (Slessor, 1988) and other effects. (E)-9-oxodec-2-enoic acid (9-ODA) - inhibits queen rearing as well as ovarian development in worker bees; strong sexual attractant for drones when on a nuptial flight; critical to worker recognition of the presence of a queen in the hive (R,E)-(-)-9-hydroxy-2-enoic acid (9-HDA) promotes stability of a swarm, or a "calming" influence (S,E)-(+)-9-HDA Methyl-p-hydroxybenzoate (HOB) 4-hydroxy-3-methoxy phenylethanol (HVA) Early work on synthetic pheromones was done by Keith N. Slessor, Lori-ann Kaminski, Gaylord G. S. King, John H. Borden, and Mark L. Winston; their work was patented in 1991. Synthetic queen mandibular pheromone (QMP) is a mixture of five components 9-ODA , (-) isomer (9-HDA), (+) isomer of (9-HDA), HOB and HVA in a ratio of 118:50:22:10:1. Queen retinue pheromone (QRP) The following compounds have also been identified, of which only coniferyl alcohol is found in the mandibular glands. The combination of the 5 QMP compounds and the 4 compounds below is called the Queen Retinue Pheromone (QRP). These nine compounds are important for the retinue attraction of worker bees around their queen. methyl (Z)-octadec-9-enoate (methyl oleate) (E)-3-(4-hydroxy-3-methoxyphenyl)-prop-2-en-1-ol (coniferyl alcohol) hexadecan-1-ol (Z9,Z12,Z15)-octadeca-9,12,15-trienoic acid (linolenic acid) References listed alphabetically by author Imrie, George Georg Imrie's, Pink Pages Nov. 1999 Katzav-Gozansky, Tamar Apidologie 33 (2002) 525537 Blum, M.S. 1992. Honey bee pheromones in The Hive and the Honey Bee, revised edition (Dadant and Sons: Hamilton, Illinois), pages 385-389. Boch, R. and D.A. Shearer. 1971. Chemical releasers of alarm behaviour on the honey-bee, Apis mellifera. Journal of Insect Physiology 17, 2277-2285 Butler, C. 1609. The Feminine Monarchie. On a Treatise Concerning Bees, and the Due Ordering of them. Joseph Barnes: Oxford. Free, John B., Pheromones of social bees. Ithaca, N.Y.: Comstock, 1987. Imrie, George George Imrie's Pink Pages November 1999 accessed Feb. 2005 Keeling, C. I., Slessor, K. N., Higo, H. A. and Winston, M. L. (2003) Isolation and identification of new components of the honey bee (Apis mellifera L.) queen retinue pheromone. Proc National Academy of Science USA 100: 4486-4491. Leoncini, I., Le Conte, Y., Costagliola, G., Plettner, E., Toth, A. L., Wang, M., Huang, Z., Bcard, J.-M., Crauser, D., Slessor, K. N. and Robinson, G. E. (2004) Regulation of behavioral maturation by a primer pheromone produced by adult worker honey bees. Proc Natl Acad Sci USA 101: 17559-17564. Maschwitz, U., 1964. Alarm substances and alarm behavior in social Hymenoptera, Nature 204, 324-327. Moritz, R.F.A. and H. Burgin. 1987. Group response to alarm pheromones in socialwasps and the honeybees. Ethology 76, 15-26 Slessor, K. N., Kaminski, L.-A., King, G. G. S., Borden, J. H. and Winston, M. L. (1988) Semiochemical basis of the retinue response to queen honey bees. Nature 332: 354-356. Vander Meer, R.K. et al. 1998. Pheromone Communication in Social Insects; Boulder: Westview Press Wager, B.R. and M.D. Breed. 2000. Does honeybee sting alarm pheromone give orientation information to defensive bees? Annals of the Entomological Society of America 93(6), 1329-1332 Notes ^ Free, John B., Pheromones of social bees. Ithaca, N.Y.: Comstock, 1987. ^ Blum, M.S. 1992. Honey bee pheromones in The Hive and the Honey Bee, revised edition (Dadant and Sons: Hamilton, Illinois), pages 385-389. ^ For Imrie, George Georg Imrie's, Pink Pages Nov. 1999 ^ Katzav-Gozansky, Tamar Apidologie 33 (2002) 525537 ^ Katzav-Gozansky, T., V. Soroker, and A. Hefetz. 2002. Honeybees Dufour's gland - idiosyncrasy of a new queen signal. Apidologie 33: 525 - 537. ^ Leoncini, I., Le Conte, Y., Costagliola, G., Plettner, E., Toth, A. L., Wang, M., Huang, Z., Bcard, J.-M., Crauser, D., Slessor, K. N. and Robinson, G. E. (2004) Regulation of behavioral maturation by a primer pheromone produced by adult worker honey bees. Proc Natl Acad Sci USA 101: 17559-17564. ^ Keeling, C. I., Slessor, K. N., Higo, H. A. and Winston, M. L. (2003) Isolation and identification of new components of the honey bee (Apis mellifera L.) queen retinue pheromone. Proc National Academy of Science USA 100: 4486-4491. Categories: Beekeeping Pheromones are actually natural substances in the body that can set off a mental effect in others. In the pet business, natural pheromones are used to transmission risk, to point to a food path, and to excite erectile attention or transmission ability to friend. Both men and women produce pheromones, although the quantity of pheromones normally published by women exceeds considerably exceeds those published by men. When an ant is disturbed, it releases a pheromone that can be detected by other ants several inches away. They are attracted by low concentrations of the pheromone and begin to move toward the region of increasing concentration. As they get nearer to their disturbed ant releasing an alarm pheromone, their response changes to one of emergency and alarm. They run about to try to break up the disturbance that caused the alarm. You can now purchase pheromone apply items that are utilized much like perfume, but they contain genuine ingredients of pheromones that catch the awareness of women. As for their efficiency - well, this will depend upon who you chat to. Research have been accomplished which seemed to recommend that women revealed to using its pheromones did practical knowledge thoughts of improved excitement. Pheromone organizations list various investigation results, such as a discovering that 74% of men using pheromones skilled raises in embracing, getting, and lovemaking. Other experts say that some investigation results are challenging. For example, in one research, pheromones were dispersed on one of two dentists' seats. More women select to sit in the seat that had been dispersed with pheromones. Pheromone organizations determined that this reality was due to the women being fascinated to those seating. However, experts talked about that an personal could only practical see the pheromone stench at a range of less than 18 in., so the women would not have skilled the happening until they had actually began relaxing in a selected chair! All things regarded, there is probably some value in a guy having a little additional support. Once a lady gets near enough, she will breathe the smell - and you want to get her near. But keep in mind that the individual most eye-catching thing to a lady will be your self-confidence. If you come across like a assured guy, that will get could awareness. And if sporting pheromones that catch the awareness of women raises your own assurance - if you experience it gives you an side, then try it for yourself! Instantly Arouse, Attract, Excite, Intrigue and Seduce Gorgeous Women Whenever You Want, Wherever You Want, As Often As You Want ... Any Time YOU Are In the Mood. o Become a lot more sexually attractive. o Meet more beautiful women, MUCH more easily. o Get the awareness and get contacted by women far more often. o Make a fantastic, memorable, compelling impression , every time. o Improve your self-confidence and maleness BIG-time... then this may be the most essential announcement you will study all season. And other claims that are just as outrageous all over the internet. Human beings do not produce large quantities of natural pheromones. It has been noted that women who live together for awhile tend to sync their cycles. It has been written this is to a primer pheromone that women release. If you're looking for the individual of your desires, trusting pheromones in your system fragrance are most likely enjoying a big and very brilliant part in friend fascination. According to an document in "Psychology These days," how our system scents are recognized as pleasurable and eye-catching to another individual is a very frugal procedure. We usually fragrance best to a individual whose genetically centered protection to disorder is different most from our own. This could advantage you in the extensive run, generating for more powerful, better kids. I witnessed a display on The Development Direct once about libido. They did a fight with a using its and 5 ladies who so had very different kinds of natureal defenses. The ladies with identical natureal defenses to the using its were more unpleasant in stench than the ladies with very different natureal defenses. I would think about this is due to the different in pheromones. The pheromones though are normally created by our people systems. There has been no investigation to pheromones created in a lab. What if we were to say women were a little bit fascinated to pheromones created in a lab. If you go into a team after washing in these pheromones how is a lady going to be fascinated to you ? You are giving out a fragrance that (supposedly) is transforming any young lady who scents it on. Well, what about the pair that is moving next to you? Theoretically, that young lady is getting switched on but who's to say she is getting switched on to you? She is getting switched on to the loss she is moving with (Which this loss didn't pay anything for pheromones) So, presuming that they do function they would only advantage you in one-on-one circumstances. The facts are that no investigation says artificial pheromones. The organizations promoting items are artificial pheromones. Do these work? Who knows there are much more trusted tips on how to acquire fascination that a fragrance. I want somebody to be fascinated to me for me. Not some pheromone I'm sporting. How is she going to experience when I'm not sporting it. Also what is the impact of a women being revealed to the same pheromone all-time. Wouldn't it induce her to get used to that fragrance and therefore do not answer to it?. My recommendation is to look for other tips on how to appeal to somebody that can generate regular outcomes without depending on some items. Robert Torrey is one of the instructors for Direct Method. Direct Method teaches men to be confident with women. They do with different products and a few newsletter. Their best product is a live workshop conducted in various nightclubs teaching men to pick up women.

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