Ticks feed on the blood of vertebrates, but this diet is low in vital B vitamins. A study published earlier this year shows that ticks supplement their diet with vitamin B from mutualistic bacteria.
I’d like to talk about a very important issue, very close to my heart, and one that I think needs greater public awareness – the definition of the word ‘bug’. See, people think they can just throw the word bug around willy-nilly. Anything small, flying or irritating, is a bug. Any pest, is a bug. […]
Yoga and meditation have effects on physiology, brain chemistry, and cognitive processes; these vary depending on the exact type of practise being performed and how long a person has practised it for. Studies of brain activity confirm that meditation can achieve a state of calm, thoughtless awareness, by suppressing brain regions involved in external attention and irrelevant information, and activating brain regions involved in internalised attention and positive emotions.
Parasites are thought to diversify with their host species, but the theory has rarely been tested. Kevin Johnson at the University of Illinois and his colleagues sequenced the genomes of 46 species of lice that parasitise birds or mammals, and two non-parasitic bark lice, and constructed an evolutionary tree. They estimated that parasitic lice first emerged between 90 and 100 million years ago, but didn’t begin to diversify until 66 million years ago – around the time of the dinosaurs’ extinction.
As I’ve mentioned before, living in a large densely-packed social group, like a city or an ant colony, comes with some drawbacks – perhaps worst of which is the risk of catching a contagious diseases. Earlier this year I wrote about research showing that raider ants treat injured workers’ wounds, helping them to heal. Now, a new study shows that the queen can pass on resistance to diseases she’s encountered, arming her workers against pathogens.
I’ve spent more time than most observing ants, and I’ve come to find them ‘cute’ – something few other people understand, and that is often hard to convey. So it’s nice to find a paper that offers the opportunity to give people a glimpse into the cuteness I see in ant behaviour.
Ants clean the wounds of injured nest mates, often saving their lives and keeping infection out of the colony.
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A guest post for Curious Meerkat by Emily Folk.
Have you ever considered a world without elephants? This is a world we’re heading toward with the profound level of poaching that has occurred. As a result of almost institutionalized poaching over many decades, we have decimated the population of wild African elephants to between 400,000 and 600,000 individuals.
The Ig Nobel Prizes is one of my favourite events of the year, and this year the winning research is particularly great. On the 14th September, The 27th First Annual Ig® Nobel Prize Ceremony & Lectures took place at Harvard University in Massachusetts. In case you’re not familiar with the awards, they were set up in 1991 to celebrate research that makes you laugh, and then makes you think. Here are this year’s awards:
I’d like to talk about a problem. It might seem like quite a small problem, but it’s a pervasive one. That problem, is salad.
Yes, that’s right, I said salad. Not high on the list of major world perils, but perhaps it should be. I mean, for starters, it’s everwhere. Lurking in every supermarket-bought sandwich, mocking you from the side of every pub lunch, withering beneath every take-away spring roll. And that sad bit of salad that came with your meal, that you never even for a moment considered eating, has caused a surprising amount of damage to the environment.
You might have heard of the #360papers challenge – to read one journal article a day for a whole year – you might be less familiar with the related #230 papers challenge. This makes the more realistic goal of reading one journal article each working day of the year, which is apparently 230 days in total (I haven’t checked their maths). This is a record of my feeble attempt to reach this lofty goal – I will update every ten articles or so and try to give a one sentence summary (or link to an article or a longer blog).
Last updated: 19.08.17
New gene editing technologies have revolutionised genetic science, but social insects like ants have proved difficult to genetically modify because of their complex lifecycle and social structure. Now, two separate labs have succeeded in using the CRISPR-CAS9 system to genetically modify two unusual ant species, switching off genes and disrupting their social behaviour in the process.