Navigation Links
Honest crabs, power to the hungry, nice mice and clever meerkats: News from the American Naturalist
Date:2/19/2009

indifferent as to whether or not the group breaks up." There's some empirical evidence to back up the model. Studies have shown that food deprived fish move to the front of shoals, presumably to steer the group toward food.

L. Conrad, J. Krause, I. D. Couzin, and T. J. Roper, "'Leading According to Need' in Self-Organizing Groups," 173:March

GENTLE GIANTS WOO MORE LADIES (IN MICE, ANYWAY)

Sometimes the nice guy gets the girls. At least that's how it is for striped mice. A research team led by Carsten Schradin (University of Zurich and University of the Witwatersrand) studied the breeding strategies of striped mice in South Africa. They found that dominant males who controlled breeding groups had lower testosterone levels than subdominant males. "What is unusual about this society is that the dominant males are in fact the most sociable, often grooming other group members," Schradin says. "It is the smaller and solitary living males, which roam from one group to another, that have the highest testosterone levels." The roaming males try to coerce females to mate, which, as one might imagine, is less successful than establishing a breeding group.

Carsten Schradin, Michael Scantlebury, Neville Pillay, and Barbara Knig, "Testosterone levels in dominant sociable males are lower than in solitary roamers: physiological differences between three male reproductive tactics in a sociably flexible mammal," 173:March

MEERKATS AND THE EVOLUTION OF SPECIALIZED ALARM CALLS

Meerkats' cooperative social structure may have led them to evolve a specialized system of alarm calls, according to an article by Roman Furrer and Marta Manser from the University of Zurich. Meerkats have the ability to vary their alarm calls depending on what type of predator threatens them. In other words, they use one call when threatened from the air by an eagle, and a different call when threatened from the ground by a snake. But Cape groun
'/>"/>

Contact: Kevin Stacey
kstacey@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Fiddler crabs reveal honesty is not always the best policy
2. Beyond batteries: Storing power in a sheet of paper
3. Selexis Announces Advanced Approach to Maximize Power of Genetic Elements for Rapid Development of High Performance Cell Lines
4. Enzyme alerts cells powerful army to repair DNA damage
5. Fuel cells gearing up to power auto industry
6. Choices and Challenges forum to address nuclear power issue
7. Powerful integration of lipid metabolic profiling with gene expression analysis
8. In the laboratory, green tea proves a powerful medicine against severe sepsis
9. RAND paper finds diesel, hybrid vehicles can provide more societal benefits than gas-powered autos
10. The power of multiples: Connecting wind farms can make a more reliable - and cheaper - power source
11. Smarter energy storage for solar and wind power
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/25/2015)... 25, 2015  Australia,s market for wearable technologies is ... saw the advent of several trials and prototypes. The ... is expected to ignite interest in wearables as well ... Australia . This in turn will spur greater ... new partnerships amongst vendors and distributors. ...
(Date:5/21/2015)... 2015 According to a ... (Hardware, Software, Services), by Applications (Surveillance (Airborne, Maritime, ... End-Users (Military & Defense & Commercial) - Global ... Market is expected to grow from $7252.0 Million ... a Compound Annual Growth Rate (CAGR) of 6.6%. ...
(Date:5/20/2015)... 20, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... owned subsidiary, 3D-ID LLC, a company engaged in biometric ... the biometrics technology portion of the recently awarded TIES ... Department of the Army. 3D-ID LLC has ... government, law enforcement and security agencies. ...
Breaking Biology News(10 mins):Australian wearables market to grow at CAGR of 78%; revenue of A$1 billion by 2018, says Frost & Sullivan 2Australian wearables market to grow at CAGR of 78%; revenue of A$1 billion by 2018, says Frost & Sullivan 3Australian wearables market to grow at CAGR of 78%; revenue of A$1 billion by 2018, says Frost & Sullivan 4Thermal Imaging Market Worth $9,998.9 Million by 2020 2Thermal Imaging Market Worth $9,998.9 Million by 2020 3Thermal Imaging Market Worth $9,998.9 Million by 2020 4NXT-ID, Inc Announces Participation as Member of Team Battelle for TIES Contract Award 2NXT-ID, Inc Announces Participation as Member of Team Battelle for TIES Contract Award 3
... in German . , EUMINAfab offers ... nanotechnologies for users from science and industry. Today, this ... Ten leading institutions from research and industry in eight ... high-tech installations along with the corresponding scientific and technological ...
... about how fat causes hypertension have been identified by researchers ... obese people and maybe some thin ones too ... best for them. Medical College of Georgia researchers ... mice at risk for hypertension by interfering with an endogenous ...
... of the world,s top cancer specialists will be in ... International Cancer Symposium organised by Queen,s University. The ... and Cancer Research (CCRCB) on Wednesday and Thursday, will ... and Europe, including those from Harvard Medical School in ...
Cached Biology News:Scientific pathways into the nanoworld 2Scientific pathways into the nanoworld 3New information about how fat increases blood pressure could help identify those at risk 2New information about how fat increases blood pressure could help identify those at risk 3International event brings world's top cancer doctors to Queen's 2International event brings world's top cancer doctors to Queen's 3
(Date:5/26/2015)... , May 26, 2015 Pharmaco-Kinesis Corporation ... (NOCAB) recently convened at Shutters on the Beach in ... the development status of the Company,s innovative Metronomic Biofeedback ... to locally deliver chemotherapy over time to a target ... delivery capacity and biofeedback system in real-time.  ...
(Date:5/26/2015)... , 26. mája 2015 Kevin ... svojej rodiny prezidentom Barackovi Obamovi a Billovi Clintonovi ... so stratou Dr. Rongxiang Xu , otca ... Dr. Xu bol pionier, inovátor, ... jeho odhodlanie v oblasti vedy a príkladné vedenie ...
(Date:5/26/2015)... MENLO PARK, Calif. , May 26, 2015 /PRNewswire/ ... focused on the emerging field of regenerative medicine, today ... issued in June 2014 were exercised prior to their ... to the Company of $11.7 million. "We ... Pedro Lichtinger , President and CEO of Asterias. "This ...
(Date:5/26/2015)... , May 26, 2015 /PRNewswire/ - Fluorinov Pharma ... of Luke M. Beshar to its Board ... financial and pharmaceutical industry expertise as Fluorinov accelerates its ... the Fluorinov team, it is a pleasure to welcome ... a significant impact on the strategy, financial strength and ...
Breaking Biology Technology:Pharmaco-Kinesis Corporation Convenes Third Neuro-Oncology Clinical Advisory Board Meeting 2Pharmaco-Kinesis Corporation Convenes Third Neuro-Oncology Clinical Advisory Board Meeting 3Pharmaco-Kinesis Corporation Convenes Third Neuro-Oncology Clinical Advisory Board Meeting 4Pharmaco-Kinesis Corporation Convenes Third Neuro-Oncology Clinical Advisory Board Meeting 5Dr. Rongxiang Xu, O legende 2Asterias Biotherapeutics Receives $11.7 Million in Proceeds from Exercise of Warrants 2Asterias Biotherapeutics Receives $11.7 Million in Proceeds from Exercise of Warrants 3Luke M. Beshar Appointed to Fluorinov Pharma Board of Directors 2Luke M. Beshar Appointed to Fluorinov Pharma Board of Directors 3
... University today announced the public launch of the Tufts ...   The Institute is a university-wide, global ... diverse portfolio of drug discovery and development partnerships. ... by Tufts University School of Medicine and Tufts University,s ...
... Calif., Feb. 11, 2011 Abaxis, Inc. (Nasdaq: ... blood analysis instruments for the medical, research and veterinary ... Scandinavian Micro Biodevices APS, ("SMB"), a privately-held developer and ... SMB, based in Copenhagen, Denmark, has been ...
... 11, 2011 ImmunGene, Inc., a privately held drug ... that a profile of the company and its interferon ... in the February 7 issue of BioCentury , ... pharma and biotech industries. ( www.biocentury.com ) ...
Cached Biology Technology:Tufts Launches Institute for Biopharmaceutical Partnerships 2Tufts Launches Institute for Biopharmaceutical Partnerships 3Tufts Launches Institute for Biopharmaceutical Partnerships 4Abaxis Makes $2.8 Million Equity Investment in Scandinavian Micro Biodevices APS 2Abaxis Makes $2.8 Million Equity Investment in Scandinavian Micro Biodevices APS 3Abaxis Makes $2.8 Million Equity Investment in Scandinavian Micro Biodevices APS 4ImmunGene's Interferon Payload Technology Platform Featured in BioCentury Magazine 2
... of several isoprostanes produced from arachidonic acid during ... in the rat. 8-iso PGE2 inhibits U-46619 or ... and 5 µM, respectively. When infused into the ... of 4 mg/kg/min, 8-iso PGE2 decreases the GFR ...
DNA Polymerase I Large (Klenow) Fragment is a DNA polymerase that lacks the 5'Cut Site3' exodeoxyribonuclease activity of intact DNA Polymerase I but it contains the 3'Cut Site5' exodeoxyribonuclease...
... Centra-CL5R multi-purpose centrifuge offers both high-speed ... assortment of rotor options, making it ... applications., Maximum Versatility , High-speed ... angle rotors or high-volume (4 x 250mL) ...
Guanylate Kinase Purified Anti-Mouse, Anti-Rat clone 28, Isotype Mouse IgG 1 , 50 µg Consult technical datasheet for details....
Biology Products: