Navigation Links
Commonly used pesticide turns honey bees into 'picky eaters'
Date:5/23/2012

eated bees also danced less."

The two researchers point out that honey bees that prefer only very sweet foods can dramatically reduce the amount of resources brought back to the colony. Further reductions in their food stores can occur when bees no longer communicate to their kin the location of the food source.

"Exposure to amounts of pesticide formerly considered safe may negatively affect the health of honey bee colonies," said Nieh.

To test how the preference of sugary sources changed due to imidacloprid, the scientists individually harnessed the bees so only their heads could move. By stimulating the bees' antennae with sugar water, the researchers were able to determine at what concentrations the sugar water was rewarding enough to feed on. Using an ascending range of sugar water from 0 to 50 percent, the researchers touched the antennae of each bee to see if it extended its mouthparts. Bees that were treated with imidacloprid were less willing to feed on low concentrations of sugar water than those that were not treated.

The biologists also observed how the pesticide affected the bees' communication system. Bees communicate to each other the location of a food source by performing waggle dances. The number of waggle dances performed indicates the attractiveness of the reward and corresponds to the number of nestmates recruited to good food.

"Remarkably, bees that fed on the pesticide reduced the number of their waggle dances between fourfold and tenfold," said Eiri. "And in some cases, the affected bees stopped dancing completely."

The two scientists said their discoveries not only have implications for how pesticides are applied and used in bee-pollinated crops, but provide an additional chemical tool that can be used by other researchers studying the neural control of honey bee behavior. The study was funded by the North American Pollinator Protection Campaign and the National Science Foundation.


'/>"/>
Contact: Kim McDonald
kmcdonald@ucsd.edu
858-534-7572
University of California - San Diego
Source:Eurekalert

Page: 1 2

Related biology news :

1. Commonly used diabetes drug may help to prevent primary liver cancer
2. Commonly used herbicides seen as threat to endangered butterflies
3. A sleep strategy commonly used by night nurses throws off their circadian clocks
4. The first DNA barcodes of commonly traded bushmeat are published
5. Effect of chronic exposure to chemicals used as weapons, pesticides under study
6. MU scientists study how to improve pesticide efficiency
7. IPM decreased pesticide use in University of Florida housing
8. Researchers discover green pesticide for citrus pests
9. Pesticides pollute European waterbodies more than previously thought
10. Scientists concerned about pesticide education funding
11. Team shows how the honey bee tolerates some synthetic pesticides
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/28/2014)... A Mayo Clinic researcher and his collaborators have ... and enhance the process of re-engineering cells for biomedical ... network biology methods to aid stem cell engineering. Details ... are described in two back-to-back papers in the journal ... broad range of uses for all types of cell-based ...
(Date:8/28/2014)... Access to Research Careers) Program has announced the ... America,s 27th Annual Mouse Molecular Genetics Conference from ... Grove, California. These awards are meant to ... scientists from underrepresented groups into the mainstream of ... participation of young scientists at the Genetics Society ...
(Date:8/28/2014)... -- Scientists have identified the developmental on-off switch for ... produce more than two-thirds of the world,s naturally derived ... to see whether it is possible to manipulate this ... , The study, appearing August 28 in Cell ... molecule called cyclic-di-GMP and a larger protein called BldD ...
Breaking Biology News(10 mins):New tool aids stem cell engineering for medical research 2Small molecule acts as on-off switch for nature's antibiotic factory 2Small molecule acts as on-off switch for nature's antibiotic factory 3
... incite the body to attack its own nerve tissue ... viral and nerve proteins. The dual-receptor observation suggests a ... triggered in susceptible young adults afflicted with multiple sclerosis ... scientists Qingyong "John" Ji, Antoine Perchellet, and Joan M. ...
... LAFAYETTE, Ind. - Isolating a gene that allows a type ... researchers hope to use the finding to create plants that ... metal. The fern Pteris vittata can tolerate 100 to ... professor of botany and plant pathology, and David Salt, a ...
... at Chicago have discovered that an unexpected cellular response ... the formation of excess scar tissue in wound healing. ... Nature Cell Biology . When an organism ... wound site that rapidly produce extracellular matrix proteins such ...
Cached Biology News:Virus infection may trigger unusual immune cells to attack nerves in multiple sclerosis 2Virus infection may trigger unusual immune cells to attack nerves in multiple sclerosis 3Virus infection may trigger unusual immune cells to attack nerves in multiple sclerosis 4Fern's evolution gives arsenic tolerance that may clean toxic land 2Researchers discover mechanism that limits scar formation 2
(Date:8/28/2014)... Nevada City, CA (PRWEB) August 28, 2014 ... and sanitation products for the food processing industry, is ... conducting a side-by side comparison of the E2 soap ... Q E2 Sanitizing Foam Soap . Hand hygiene ... pathogens in the food processing environment. Six key criteria ...
(Date:8/28/2014)... WEST LAFAYETTE, Ind. A new research ... "nanomechanical" properties of tiny structures undergoing stress ... insights to improve designs for microelectronics and ... spectroscopy, reveals information about how heating and ... their mechanical properties. Researchers have discussed the ...
(Date:8/28/2014)... The ability for organizations to attract ... allow individuals to perform at the highest of levels, ... looking to compete in this post–recession era. The ... as the sector increasingly focuses on the importance of ... have real results on the organization's development and the ...
(Date:8/28/2014)... (PRWEB) August 28, 2014 Sterlitech is ... polymeric membranes to its stable of products . ... molecular weight cut-offs and include membrane filters with surface ... increase in customer demand for our membrane process testing ... variety of flat sheet membranes,” explains Sterlitech President Mark ...
Breaking Biology Technology:Best Sanitizers, Inc. Asks Food Industry Professionals: With Fall Harvest On the Way, Is Your E2 Hand Soap Up to the Task? 2New analytical technology reveals 'nanomechanical' surface traits 2New analytical technology reveals 'nanomechanical' surface traits 3Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 2Klein Hersh International Leads Philadelphia Area Life Science Industry in Company Culture 3Sterlitech Corporation Enhances Its Selection of Flat Sheet Membrane Filters 2
... the First Therapies to Address the Underlying Cause ... Paradigm -, SOUTH PLAINFIELD, N.J., Aug. 20 ... Lancet show that the investigational oral drug,PTC124 demonstrates ... that treatment with PTC124 results in statistically significant,improvements ...
... Aug. 20 /PRNewswire-FirstCall/ - Oncothyreon Inc. (Nasdaq:,ONTY) (TSX: ... from The Nasdaq,Stock Market on August 14, 2008 ... for continued listing on The NASDAQ Global Market,because ... specifies, among,other things, that (i) the market value ...
... Aug. 20 Crystal Research Associates, LLC,announced ... Informational Overview(R),(EIO(R)) on Generex Biotechnology Corporation (Nasdaq: ... be found at http://www.crystalra.com ., ... is a,specialty pharmaceutical company that aims to ...
Cached Biology Technology:PTC124 Shows Promising Activity in Cystic Fibrosis; Phase 2 Proof-of-Concept Data Published in the Lancet 2PTC124 Shows Promising Activity in Cystic Fibrosis; Phase 2 Proof-of-Concept Data Published in the Lancet 3PTC124 Shows Promising Activity in Cystic Fibrosis; Phase 2 Proof-of-Concept Data Published in the Lancet 4PTC124 Shows Promising Activity in Cystic Fibrosis; Phase 2 Proof-of-Concept Data Published in the Lancet 5Oncothyreon announces receipt of notice of non-compliance with market value of listed securities standard for listing on The NASDAQ Global Market 2Oncothyreon announces receipt of notice of non-compliance with market value of listed securities standard for listing on The NASDAQ Global Market 3Crystal Research Associates, LLC Issues Executive Informational Overview(R) (EIO(R)) on Generex Biotechnology Corporation 2Crystal Research Associates, LLC Issues Executive Informational Overview(R) (EIO(R)) on Generex Biotechnology Corporation 3
... BIP-NC H-IPMIK-OH Lyophilized ... FROM LIGHT. HYGROSCOPIC. PACKAGED UNDER INERT GAS. ... Peptide, V5 (Cat. No. 196810) that serves ... Bax-mediated apoptosis (~200 μM). Purity: ≥97% ...
BD Falcon microtest assay plate. 1536 well 12l, black, flat-bottom PS. Polystyrene, nonsterile, no lid. (15/sp, 60/ca) Packaging: 15 / pack, 60 / case ...
... flexible, fully automated microplate strip washer for 96- ... automated microplate strip washing capability, the Columbus combines ... operation. , Features ... 8, 12 or 16 channels, crosswise aspiration, overflow ...
... Model 1575 immunowash microplate washer 100-240 V, ... have flat-, U-, or V-bottom wells. The ... and vertical needle positions to an accuracy ... aspiration, and overflow washing. It can store ...
Biology Products: