Scientists map the flight of the bumblebeeJuly 26, 2006Bumblebees have an incredible homing instinct that allows them to find their way home from up to eight miles away, according to the early results of research that aims to aid efforts to save the British bumblebee. Bumblebees are being dropped off at famous landmarks in North East England by the Newcastle University researchers, who then observe if they can find their way back to a nest on campus. Early results show the bees, which are tagged with tiny identification numbers in the laboratory, have flown back from the Metro Centre and the Angel of the North (three miles away, or 5 kilometres) and the Tyne Bridge and Manors Metro station (one mile, or 1.5k). However, the record flight was from a garden centre in Heddon on the Wall in the Tyne Valley in the county of Northumberland-some eight miles or 13km from their nest. The researchers have found it is only the worker bees which make their way back-they suspect the queen bees find shelter elsewhere. The results are surprising because scientific literature says the bumblebee they are studying-a common species called Bombus terrestris-travels only 5km for its food. The project aims to find out how far the bees can travel to get their food and if certain environments are trickier to navigate than others. This knowledge will ultimately help with conservation strategies that may involve adapting landscapes to create optimum habitats for bees. There are 25 species of British bumblebee but their numbers have been declining in the last 50 years due to dramatic changes in the landscape caused by intense farming. Bees are a crucial part of wildlife communities-known as ecosystems-because they pollinate plants in their search for their food, nectar and pollen from flowers. Worldwide, up to 40 per cent of the world's food production is due to pollination by wild bees, which include the bumblebee. Steph O'Connor, who has just graduated from Newcastle University with a Wildlife Biology degree, is working on the project with insect specialists Dr Mark O'Neill and Dr Gordon Port, who is also a senior lecturer with the University's Division of Biology. Steph, who hopes to continue her studies for a research degree, has spent several weeks attracting the attention of passers-by as she hovers near the hive-in a garden wall on campus-catching the bees in a large net. She said: "The current scientific literature shows that bees normally forage within 5km, and this is probably correct. However, the findings of our research are intriguing, because it shows the bees can navigate their way home from further away than this." Scientists are unsure how bumblebees navigate. Vision is thought to be most Important, helping them to fly in straight lines and to use landmarks as clues. At very close range (no more than a metre or two) they use odour to find their way around. Co-researcher, Dr Mark O'Neill, is plotting the bees' journeys using a computer programme, allowing him to build up a pattern of flight paths from different places. He said: "We are trying to find out more about how bees forage, or look for their food. We're particularly interested to see if they find certain environments easier to navigate. "For example, do the bees find it easier to get home from the built-up urban environment that the Metro Centre occupies-or are they more comfortable navigating the green fields out in the Tyne Valley? All this is useful information for conservationists who are formulating strategies to prevent the bumblebee from decline.\\\ University of Newcastle upon Tyne |
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| Related Bumblebee Current Events and Bumblebee News Articles Secrets of insect flight revealed Researchers are one step closer to creating a micro-aircraft that flies with the manoeuvrability and energy efficiency of an insect after decoding the aerodynamic secrets of insect flight. Want to fly? Don't copy the birds and the bees Since earliest recorded history, and presumably beyond, humans have always wanted to fly. Bumblebee house warming — it takes a village Researchers have known that a key to the insects' success in adapting to cooler climates is their ability to maintain fairly stable body temperatures when flying to flowers. National Insect Week 2004 This summer will see the launch of National Insect Week, a new initiative from the Royal Entomological Society which aims to raise the profile of insects among the British public, and to encourage the study of entomology. National Insect Week is sponsored by Castle Cement and has the support of the Darwin Centre at the Natural History Museum in London, which will host the official launch on Monday 14 June at 11am. Sir David Attenborough will offer a message of support via a televised link. The RES and partners have organised a series of entomology-themed events and exhibitions which will run during the course of the week, including insect hunts, talks and exhibitions. National Insect Week i Social life-history response to individual immune challenge of workers of Bombus terrestris: a possible new cooperative phenomenon Solitary organisms can minimise fitness loss from parasitism with a facultative change to an earlier reproduction. Such a shift of the reproductive effort gives the host a chance to compensate for the cost on future reproduction resulting from the infection. In the case of social insects, where brood care and reproductive effort are shared between the queen and her workers, adjustments of the reproductive effort would depend on collective decision-making. In the February issue of Ecology Letters, Moret and Schmid-Hempel at the Swiss Federal Institute of Technology of Zurich, report a study that tested for this possibility by experimentally activating the immune response of individual workers Mass flowering crops enhance pollinator densities at a landscape scale The EU response to recent declines in pollinators and consequent loss of pollination services has been the inclusion of pollinator-friendly management in agri-environment schemes. These comprise the promotion of semi-natural habitats, such as set-aside and field margin strips. Yet, mass flowering crops, such as oilseed rape, are assumed to be of little value to pollinators. However, in an article soon to appear in Ecology Letters, C. Westphal, I. Steffan-Dewenter and T. Tscharntke show that the densities of bumblebees, a key group of pollinators in European agroecosystems, did not appear to be related to the amount of semi-natural habitats, as previously thought. Instead, bumblebees profite Computer search for Billy Bumblebee and Friends A fat bumblebee lies sedated beneath the stereo magnifying glass, its right wing pinned between a glass prism and a slide glass. A bright lamp illuminates the scene so that the veining of the wing is clearly visible on the display of the digital camera attached to the tube. „First we have to photograph the wing," Dr. Tom Arbuckle explains, pressing the shutter release. „The picture quality of an ordinary camera is perfectly adequate,„ he adds. He stores the photo in the adjacent laptop. With a few clicks of the mouse Dr. Arbuckle, who works at the Bonn Institute of Computing Science III (Director: Prof. Armin Cremers) then takes the first step in the process of analysis More Bumblebee Current Events and Bumblebee News Articles |
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