Navigation Links
French scientist wins the Journal of Experimental Biology Outstanding Paper Prize
Date:11/27/2008

w forager ants respond to the nutritional needs of the entire nest, it was natural that Dussutour joined Simpson's lab at the University of Sydney to find out how ant nests regulate their diet.

Dussutour explains that when an individual regulates its nutritional intake, all it has to do is listen to its own stomach. But it is a completely different matter for a colony where only 10% of the population supplies everyone's needs. The foragers must listen not only to their own needs but also the needs of the entire colony. So how does the colony regulate its nutritional intake and communicate its needs to the small number of foragers that keep it supplied?

Focusing on how ants regulate their sugar intake in good and bad times, Dussutour and Simpson offered individual ants concentrated and dilute sugar solutions to find out how they responded when they only had themselves to think of. 'Adult ants can survive without food' explains Dussutour, and having tested out the sugar solutions, the ants tucked into the concentrated sugar solution while ignoring the weaker solution: they would prefer to go without rather than eat a poor quality sugar solution.

But what happened when the foragers had to start thinking of their entire community? Starting out with 18 adult-only colonies, Dussutour offered them either a dilute, medium strength or concentrated sugar solution diet. Over the first few weeks, the colonies regulated their sugar intake to some extent, with the colony on the strongest sugar solution gorging until it was full, while the colony on the dilute sugar diet preferred to starve at first rather than consume the unpalatable 'nectar'.

However, things changed when larvae started coming along. All three colonies started regulating their sugar intake much more precisely, with the 'dilute sugar' colony sending out more foragers and doubling the amount of sugar they took home, even though they would have preferred to starve if left to their own devices.


'/>"/>

Contact: Kathryn Phillips
kathryn@biologists.com
44-012-234-25525
The Company of Biologists
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. 2 French scientists win European award for communication
2. US-French research team to barcode an entire ecosystem
3. UK scientists working to help cut ID theft
4. Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
5. Comet probes reveal evidence of origin of life, scientists claim
6. Scientists link fragile X tremor/ataxia syndrome to binding protein in RNA
7. Male elephants get photo IDs from scientists
8. Scientists retrace evolution with first atomic structure of an ancient protein
9. Muscle mass: Scientists identify novel mode of transcriptional regulation during myogenesis
10. Carnegie Mellon scientists develop nanogels that enable controlled delivery of carbohydrate drugs
11. Clemson scientists shed light on molecules in living cells
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/22/2014)... Thanks to important discoveries in basic and clinical ... has mobilized into a complex offensive spanning multiple ... Alberta chemistry lab could help find new and ... a compound that targets a specific enzyme overexpressed ... in cells from brain tumours. , Chemistry professor ...
(Date:8/22/2014)... 3β-Hydroxysteroid-Δ24 reductase (DHCR24) is a multifunctional ... reticulum and has neuroprotective and cholesterol-synthesizing ... apoptosis caused by amyloid β deposition. ... Liaoning University in China constructed two ... drive DHCR24 expression specifically in neuronal ...
(Date:8/21/2014)... in past decade, GTA still violates Canada,s ozone ... the Greater Toronto Area (GTA) has significantly reduced ... the city continues to violate the Canada-wide standards ... or aggravate health problems such as asthma, emphysema ... of complex photochemical reactions involving volatile organic compounds ...
Breaking Biology News(10 mins):New enzyme targets for selective cancer therapies 2New enzyme targets for selective cancer therapies 3Despite a significant reduction in smog-producing toxins, the Greater Toronto Area still violates Canada's standards for ozone air pollution 2
... with theatre, much less mate with artistic vigor, but ... recent production Heuschrecken [The Locusts] developed by Stefan Kaegi ... University,s Manfred Laubichler and Gitta Honegger who review the ... Science . "Scientists have no trouble seeing ...
... the Association for Molecular Pathology (AMP) released its ... developed tests (LDTs), a recent focus of debate among ... AMP,s statement outlines the organization,s commitment to providing high ... implementation of appropriate oversight mechanisms. The association also ...
... January 27, 2010 -- Investigators at Sanford-Burnham Medical Research ... surface protein, CD44, helps specific T helper (Th1) cells ... and colleagues determined that without CD44, Th1 cells died ... to generate immunologic memory. This is the first time ...
Cached Biology News:Scientists and cast of thousands swarm stage in Europe 2Scientists and cast of thousands swarm stage in Europe 3AMP releases statement on oversight of laboratory tests 2Secrets of immunologic memory 2
(Date:8/22/2014)... (August 22nd), in the scientific journal PLoS ... establish the effect of serotonin on sensitivity to ... optical techniques., "Serotonin is a small molecule known ... brain functions, from the control of sleep and ... This neurotransmitter is also popularly thought to contribute ...
(Date:8/22/2014)... , Aug. 22, 2014 Research and ... "Global and China Gel Permeation Chromatography (GPC) Industry Report ... The Global and China Gel Permeation Chromatography (GPC) Industry ... current state of the global gel permeation chromatography industry ... report provides a basic overview of the industry including ...
(Date:8/22/2014)... “Our nation's healthcare system is ... disgrace. Furthermore, every governmental and professional entity that ... state of unorganized dysfunction shares in that enormous ... serve as a device to use in an ... that have accumulated through the years leading to ...
(Date:8/21/2014)... Dallas, Texas (PRWEB) August 21, 2014 ... Global Seaweed Fertilizer Industry” is a professional ... Fertilizer market. The report provides basic Seaweed ... application, and industry chain structure as well ... international market analysis, including domestic market as ...
Breaking Biology Technology:From happiness to pain: Understanding serotonin's function 2Global and China Gel Permeation Chromatography (GPC) Industry Report 2014 25 Great Mistakes in Healthcare and How to Fix Them by Dr. Ira Williams 2Internationals Seaweed Fertilizer Industry 2014 Development Trend Analysis in New Research Study at DeepResearchReports.com 2Internationals Seaweed Fertilizer Industry 2014 Development Trend Analysis in New Research Study at DeepResearchReports.com 3
... the graduate education division of the National Science ... to a multidisciplinary research team at Stevens Institute ... Chassapis, Director of the Mechanical Engineering Department. In ... Investigator, the team includes Associate Professor Sven Esche ...
... GeneNews Limited (TSX: GEN),a company focused on ... of diseases and personalized health management, today ... quarter and year ended,December 31, 2007., ... because of the,advancements made for the laboratory-developed ...
... a.m. EDT, NEW YORK and HAIKOU CITY, ... ("China Pharma") (OTC Bulletin Board: CPHI),which develops, manufactures, ... today announced it will release its,Fourth Quarter and ... In,conjunction, the Company will host an earnings conference ...
Cached Biology Technology:Chassapis and team awarded $3 million GK-12 grant from NSF for multiscale research 2Chassapis and team awarded $3 million GK-12 grant from NSF for multiscale research 3GeneNews announces 2007 year end results 2GeneNews announces 2007 year end results 3GeneNews announces 2007 year end results 4GeneNews announces 2007 year end results 5GeneNews announces 2007 year end results 6GeneNews announces 2007 year end results 7GeneNews announces 2007 year end results 8GeneNews announces 2007 year end results 9GeneNews announces 2007 year end results 10China Pharma Holdings, Inc. Announces Earnings Call for Fiscal 2007 Financial Results 2
Bio-Plex Manager software, version 3.0, 5 license netshare, is a five-user software package that provides access to data from the Bio-Plex suspension array system from a server. This version does not...
... x 3 nmol (individual) with sequence ... specifically targeted to your target gene of interestis ... you get more than 75% knockdown of your ... nM siRNA for transfection and confirmation of optimal ...
... a cocktail of 3 siRNAs specifically targeted ... most popular product. The siTrio reagent guarantees ... your target gene when used under standard ... confirmation of optimal transfection with one of ...
... The IDS 25-Hydroxy Vitamin D ... the quantitative determination of 25-hydroxyvitamin D ... in human serum or plasma. Our ... inconvenience of solvent precipitation and centrifugation ...
Biology Products: