Lonesome no more: white sharks hang with buddies

Macquarie University, Media releases

Apex marine predators choose who they hang with, researchers reveal.

A white shark (Carcharodon Carcharias). Credit: Wikimedia Commons

White sharks form communities, researchers have revealed.

Although normally solitary predators, white sharks (Carcharodon carcharias) gather in large numbers at certain times of year in order to feast on baby seals.

These groupings, scientists had assumed, were essentially random – the result of individual sharks all happening to turn up in the same area, attracted by abundant food.

Now, however, a group of researchers including behavioural ecologist Stephan Leu from Macquarie University in New South Wales, Australia, have used photo-identification and network analysis to show that many of the apex predators hang out in groups which persist for years.

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$2.5 million CSL Centenary Fellowships announced

CSL Limited

Curing the ‘hidden malaria’ in Asia/Pacific (Darwin)

A path to personalised treatment for most cancers (Adelaide)

Two Australian scientists have each been awarded AUD$1.25 million CSL Centenary Fellowships over five years to improve treatments for two of the world’s biggest health challenges: malaria and cancer. The Fellowships will be presented in Perth at the Australian Academy for Health and Medical Research Gala Dinner on 10 October.

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Prime Minister’s Prizes for Science

2019 Prime Minister’s Prizes for Science: don’t call us.

For information about the 2019 Prizes please visit www.industry.gov.au/pmscienceprizes.

We had a great run with the Prizes from 2004 to 2018. But all good things come to an end. So please don’t contact us for media information, go straight to the Department of Industry, Innovation and Science at media@industry.gov.au. We will be at the dinner on 16 October waiting with bated breath to find out who the 2019 winners are. 

15 years ago, Peter McGauran, Gemma Allman and Virginia Cook placed their trust in us to publicise the Prizes when Science in Public was in its infancy. As awareness of the Prizes has grown so has Science in Public. Please read on for some comments on our journey with the Prizes and for our thanks to the many people who contributed.  Or jump to the next post to access profiles of past winners. 

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Not long ago, the centre of the Milky Way exploded

ARC Centre of Excellence for Advanced Molecular Imaging, Media releases

Researchers find evidence of a cataclysmic flare that punched so far out of the Galaxy its impact was felt 200,000 light years away.

An artist’s impression of the massive bursts of ionising radiation exploding from the centre of the Milky Way and impacting the Magellanic Stream.
Credit: James Josephides/ASTRO 3D

A titanic, expanding beam of energy sprang from close to the supermassive black hole in the centre of the Milky Way just 3.5 million years ago, sending a cone-shaped burst of radiation through both poles of the Galaxy and out into deep space.

That’s the finding arising from research conducted by a team of scientists led by Professor Joss Bland-Hawthorn from Australia’s ARC Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) and soon to be published in The Astrophysical Journal.

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It’s complicated: coral bleaching is caused by more than just heat

Macquarie University, Media releases

Analysis of reef damage in the Indo-Pacific during the 2016 El Nino reveals that several different stressors influence bleaching.

Coral responses to temperature depend on a range of local inputs. Image credit: Wikimedia Commons.

Scientists in the Indian and Pacific Oceans used the El Nino of 2016 – the warmest year on record – to evaluate the role of excess heat as the leading driver of coral bleaching and discovered the picture was more nuanced than existing models showed.

The findings were, in a word, complicated, according to marine researchers led by the US based Wildlife Conservation Society (WCS). The international cohort included scientists from Macquarie University in NSW, the University of Queensland, University of WA and two western Australian state government departments.

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Fast radio burst provides clues to galactic halo

Macquarie University, Media releases

Macquarie astronomers find a well of serenity in deep space.

Masters student Lachlan Marnoch has been credited as co-author in a paper in Science before even submitting his thesis. Credit Macquarie University

A massive galaxy four billion light-years from Earth is surrounded by a halo of tranquil gas.

The finding, which reveals a galactic halo much less dense and less magnetised than expected, was made by a team of astronomers that included two researchers from Macquarie University.

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Meet the Freshies at the Pub

Fresh Science

Bright ideas and beer combine when Australia’s Fresh Scientists strut their stuff at 2019’s Fresh Science Pub Nights.

Fresh Science is annual competition that invites early-career scientists to present their fascinating research in the time it takes for a sparkler to burn out.

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Talk to media, business, government: sessions in Cairns and Townsville this week

Other

We’re holding a series of courses at JCU in Cairns and Townsville.

Meet working journalists from TV, radio and online, learn what they need, and how to keep it accurate – Cairns on Tuesday 17 September, Townsville on 19 September and Monday 23 September.

Find out how to talk to business, government and the community: Cairns on Wednesday 18 September, Townsville on Friday 20 September.

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Immune response depends on mathematics of narrow escapes

Macquarie University, Media releases

The shape of immune cells plays key role in recognising invaders.

The ruffled surface of a T cell means only very small areas make close contact with potential enemy cells. CREDIT: Blausen Medical

The way immune cells pick friends from foes can be described by a classic maths puzzle known as the “narrow escape problem”.

That’s a key finding arising from an international collaboration between biologists, immunologists and mathematicians, published in the journal Proceedings of the National Academy of Sciences.

The narrow escape problem is a framework often applied in cellular biology. It posits randomly moving particles trapped in a space with only a tiny exit, and calculates the average time required for each one to escape.

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There’s no place like home: butterflies stick to their burbs

Macquarie University, Media releases

Members of at least one species choose mates and egg sites based on where they were born, research reveals

Two American passionfruit butterflies, Heliconius charithonia, part of Dr Darrell Kemp’s research cohort.
Credit: Darrell Kemp.

Birthplace exerts a lifelong influence on butterflies as well as humans, new research reveals.

In a paper published in the journal Proceedings of the Royal Society B: Biological Sciences, Macquarie University ARC Future Fellow Associate Professor Darrell Kemp reveals that the American passionfruit butterfly, Heliconius charithonia, selects its mate and egg-laying site based on the species of plant that hosted its own egg.

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