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Study tests whether ants can take the heat › News in Science (ABC Science)

Study tests whether ants can take the heat › News in Science (ABC Science) | anti dogmanti | Scoop.it
Temperature increases expected due to climate change are likely to change the foraging behaviour of the humble ant.

This could have a knock-on effect for global biodiversity, scientists report today.

The common meat ant (Iridomyrmex purpureus) lives in temperate regions of southeastern Australia in such great numbers they have the highest biomass of any animal species in the country.

These ants provide an abundant food source for other species, and play a crucial role in predation, seed dispersal, pollination and nutrient recycling.

Until recently, very little research had addressed how they might be affected by a rapidly changing climate.

Entomologist Nigel Andrew, from the University of New England in Armidale, led a review of more than 1700 studies from 1985 to 2012 into the climate change response of various insect groups.

The review reveals that the response of ants to climate change was significantly under-represented, prompting Andrew and his team conduct their own study.

The team observed how 1500 meat ant workers responded to artificial rises in temperature.

Pushed over the threshold
As ectotherms, ants cannot regulate their internal body heat, so must exchange heat with their surroundings to maintain an optimal temperature.

Andrew and colleagues found that an increase of just 2°C in the ant's body temperature was the difference between a fully functioning ant and one that was disoriented and constantly falling over - their critical thermal limit being around 46°C. At just 4°C above their thermal limit, the ants could not move at all.

High levels of activity on top of the nest were observed up to 42°C, but ants would run faster back to their insulated nest to recover as temperatures continue to rise.

When the ground temperature, which during the hottest part of the day can be 40°C hotter than air temperature, reached 50°C the ants would reduce their activity. At 63°C ground temperature, the foraging stopped altogether.

The results will be reported today at the Australian Entomological Society Conference in Hobart.

Changing behaviours
The researchers suggest that rising temperatures could cause meat ants to reduce their daytime foraging, instead foraging at earlier or later parts of the day when they are less efficient, or when their nocturnal predators are more active.

Andrews says other risks to their survival could lie within the nest.

"Are the queen ants digging their nests deeper to deal with the climate? And if the workers are being stressed out, they might not be bringing enough food back. They still need to forage for hundreds of thousands of individuals," says Andrews.

He adds that recovery times for worker ants could also eat into their foraging work and lifespan. "[Their survival] depends on how adaptable they are."

The study concludes, "Ants are one of the most ubiquitous animals in terrestrial ecosystems and play crucial roles in ecosystem functioning on all continents except Antarctica."

"Therefore understanding how ants will respond to climate variation is of fundamental importance in understanding, and sustaining, global biodiversity."

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Juan Enriquez: Will our kids be a different species? | Video on TED.com

TED Talks Throughout human evolution, multiple versions of humans co-existed. Could we be mid-upgrade now?
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Sakis Koukouvis's comment, July 2, 2012 2:39 AM
Thanks. Great video
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Homepage

National Science Week is an annual celebration of science in Australia, an opportunity to join together to enjoy and explore the wonders and benefits of science.
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So much to see and do!

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‘Hyperbolic metamaterials’ closer to reality | KurzweilAI

‘Hyperbolic metamaterials’ closer to reality | KurzweilAI | anti dogmanti | Scoop.it
Hyperbolic metamaterials could bring optical advances including powerful microscopes, quantum computers and high-performance solar cells. The graphic at left
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Means so much - we will be able to "see" more.

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Researchers, Startups Hope One Drop of Blood Could Diagnose All Types of Cancer

Researchers, Startups Hope One Drop of Blood Could Diagnose All Types of Cancer | anti dogmanti | Scoop.it

As genetics reveals the incredible diversity among cancer cells, researchers have largely given up pursuing a silver bullet to cure all types of cancer. Instead, many have begun searching for the next-best thing: a silver bullet test to diagnose all cancers. The test would look for markers of cancer in the patient’s blood, where the process of tumor-making leaves a trail that can often be picked up before tumors are big enough to spot.

 

And early diagnosis makes a big difference in survival rates. When cancer is found in Stage 0, as it’s just getting started, or in Stage 1, it kills only 10 percent of patients, regardless of what type of cancer it is, for the most part. Many of the cancers we know as the deadliest are so known because they are rarely found in earlier stages.

 

 


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amazing research here

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6 Wild Quotes From Christopher Hitchens That Will Remind You Why You're An Atheist

6 Wild Quotes From Christopher Hitchens That Will Remind You Why You're An Atheist | anti dogmanti | Scoop.it
Hitch may have passed on, but his words still ring loud and clear.
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Tony Abbott incorrect on the history of marriage

Tony Abbott incorrect on the history of marriage | anti dogmanti | Scoop.it
Prime Minister Tony Abbott says marriage has always been between a man and a woman, but that's not the case.

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add your insight...

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Infographic: Article Summary Writing Tips

How and Why to add an Article Summary to each Post.Have a look next time you do a search. In addition to seeing the heading, you can also see a few sentences about what is next.This is where you can expand on the heading by giving reasons why people should read on, by enticing readers with some juicy anticipation of what is to come.Can
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Parkwood Golf Club

Parkwood Golf Club - revampedMy husband started playing golf in 2003 when we were living in Fiji for 12 months.When we returned to Australia in October 2004, he joined the Parkwood International Golf Club, not far from where we lived.Over an area of 26 km Gold Coast coastline, there are more than 50 golf clubs of varying length, standard
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A ‘universal smart window’ for instant control of lighting and heat | KurzweilAI

A ‘universal smart window’ for instant control of lighting and heat | KurzweilAI | anti dogmanti | Scoop.it
Smart-window glass that can be switched to block heat or light (credit: Lawrence Berkeley National Laboratory) Researchers at the U.S. Department of
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Researchers track facial expressions to improve teaching software | KurzweilAI

Researchers track facial expressions to improve teaching software | KurzweilAI | anti dogmanti | Scoop.it
Student workstation with depth camera, skin conductance bracelet, and computer with webcam (credit: Joseph F. Grafsgaard et al.) Research from North
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Potential new target to thwart antibiotic resistance: Viruses in gut confer antibiotic resistance to bacteria

Potential new target to thwart antibiotic resistance: Viruses in gut confer antibiotic resistance to bacteria | anti dogmanti | Scoop.it
Bacteria in the gut that are under attack by antibiotics have allies no one had anticipated, scientists have found.
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Islam and the Misuses of Ecstasy : Sam Harris

Islam and the Misuses of Ecstasy : Sam Harris | anti dogmanti | Scoop.it
Sam Harris, neuroscientist and author of the New York Times bestsellers, The End of Faith, Letter to a Christian Nation, and The Moral Landscape.
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Man gets 3D-printed face

Man gets 3D-printed face | anti dogmanti | Scoop.it
When restaurant manager Eric Moger surprised his girlfriend by proposing over Christmas dinner, he could have no idea that less than a year later his life and appearance would be changed beyond recognition.
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G20: Australians bury heads in sand to mock government climate stance - The Guardian

G20: Australians bury heads in sand to mock government climate stance - The Guardian | anti dogmanti | Scoop.it
Bondi Beach protest highlights Abbott administration’s perceived failure to put climate change on G20 summit agenda
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Those protesters wearing red swimmers are mocking our climate change denier PM Tony Abbott who often wears such 'budgie smugglers' when swimming or riding bikes in public.

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Who is Narendra Modi - India's New Prime Minister?

Who is Narendra Modi - India's New Prime Minister? | anti dogmanti | Scoop.it
Who is Narendra Modi?

India's election, which was won convincingly by the Bharatiya Janata Party (BJP), revolved around only one male: India's next head of sta
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An interesting man

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Replacing a defective gene with a correct sequence to treat genetic disorders | KurzweilAI

Replacing a defective gene with a correct sequence to treat genetic disorders | KurzweilAI | anti dogmanti | Scoop.it
(Credit: Christine Daniloff/MIT) Using a new gene-editing system based on bacterial proteins, MIT researchers have cured mice of a rare liver disorder
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Just amazing!

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Multivitamin and mineral use and breast cancer mortality in older women with invasive breast cancer in the women’s health initiative - Springer

Multivitamin and mineral use and breast cancer mortality in older women with invasive breast cancer in the women’s health initiative - Springer | anti dogmanti | Scoop.it

Postmenopausal women with invasive breast cancer using MVM (multi-vitamins with minerals) had lower breast cancer mortality than non-users. The results suggest a possible role for daily MVM use in attenuating breast cancer mortality in women with invasive breast cancer but the findings require confirmation.


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I love anything from Ray and Terry - they are in the forefront of anti aging research.

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Bees use 'biological autopilot' to land › News in Science (ABC Science)

Bees use 'biological autopilot' to land › News in Science (ABC Science) | anti dogmanti | Scoop.it
Bees get a perfect touchdown by detecting how fast their landing site 'zooms in' as they approach, new research has found.
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Rise and Shine: 5 Things Uber Successful People Do First Thing

Rise and Shine! Morning time simply became your new best buddy.Love it or despise it, making use of the morning hours prior to work may be the secret to a successful, and healthy, lifestyle. That's right, early rising is a typical quality discovered in numerous CEOs, government officials, and other influential individuals who have the rise and
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Content Marketing the New SEO – Infographic

Another great Content Marketing infographic from Berrie Pelser of Wordpress Hosting SEO.More and more today, business uses great content marketing to attract more readers, shares and likes.Makes sense really.Good content marketing works better in the long term, instead of unreliable black hat SEO which can often be affected by changes
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The Most Astounding Fact – Neil deGrasse Tyson

The Most Astounding Fact – Neil deGrasse Tyson | anti dogmanti | Scoop.it

Time magazine once asked astropysicist Neil deGrasse Tyson 10 questions.

One of those questions asked by a Time reader was “What is the most astounding fact you can share with us about the Universe?”

Neil’s response is very awe-inspiring, especially when brought to life in this video which is a compilation from various sources by Max Schlickenmeyer.

Our knowledge of the universe and where we come from is known more today than at any time in history.

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I get goosebumps whenever I watch this video!

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Any Day Now, Malaria, TB and AIDS will be Dodos.

Any Day Now, Malaria, TB and AIDS will be Dodos.
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Watch the inspiring video and then contact your local member to spread the word.

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BigBrain: an ultra-high-resolution 3D roadmap of the human brain | KurzweilAI

BigBrain: an ultra-high-resolution 3D roadmap of the human brain | KurzweilAI | anti dogmanti | Scoop.it
BigBrain (credit: Montreal Neurological Institute and Forschungszentrum Jülich) A landmark three-dimensional (3-D) digital reconstruction of a complete
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Unfrozen mystery: Water reveals a new secret

Unfrozen mystery: Water reveals a new secret | anti dogmanti | Scoop.it
Using revolutionary new techniques, a team led by Carnegie's Malcolm Guthrie has made a striking discovery about how ice behaves under pressure, changing ideas that date back almost 50 years.
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Using Thorium for Energy

Using Thorium for Energy

Liquid Fluoride Thorium Reactors LFTRs were invented 50 years ago by an American named Alvin Weinberg.

LFTRs are revolutionary liquid reactors that run not on uranium, but thorium. These work and have been built before.

The main reason this technology is not in widespread use today is our irrational fear of nuclear energy, despite the fact that more people have died from fossil fuels and even hydroelectric power than nuclear power.

That plus the multinational companies and governments invested in fossil fuel use such as oil, coal and gas.

How much Thorium for Energy do we Have?

Latest research says we have at least 2.6 million tonnes of it on earth, distributed over all the continents.

For every kilogram of thorium, LFTRs can produce 3.5 million Kwh of energy.

This is 70 times greater than uranium and 10,000 times greater than oil.

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Huge online attack exposes internet's vulnerability - tech - 29 March 2013 - New Scientist

Huge online attack exposes internet's vulnerability - tech - 29 March 2013 - New Scientist | anti dogmanti | Scoop.it
The largest online attack ever reported – which may have slowed down the internet itself – is over, but the next battleground is already
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