Canadian caterpillars and pikas helping each other


This video from Alaska is called Collared Pika- Denali National Park.

From the University of Alberta in Canada:

Discovered: A mammal and bug food co-op in the High Arctic

University of Alberta researchers were certainly surprised when they discovered the unusual response of pikas to patches of vegetation that had previously been grazed on by caterpillars from a species normally found in the high Arctic.

U of A biology researcher Isabel C. Barrio analyzed how two herbivores, caterpillars and pikas, competed for scarce vegetation in alpine areas of the southwest Yukon. The caterpillars come out of their winter cocoons and start consuming vegetation soon after the snow melts in June. Weeks later, the pika starts gathering and storing food in its winter den. For the experiment, Barrio altered the numbers of caterpillars grazing on small plots of land surrounding pika dens.

“What we found was that the pikas preferred the patches first grazed on by caterpillars,” said Barrio. “We think the caterpillar’s waste acted as a natural fertilizer, making the vegetation richer and more attractive to the pika.”

U of A biology professor David Hik, who supervised the research, says the results are the opposite of what the team expected to find.

“Normally you’d expect that increased grazing by the caterpillars would have a negative effect on the pika,” said Hik. “But the very territorial little pika actually preferred the vegetation first consumed by the caterpillars.”

The researchers say it’s highly unusual that two distant herbivore species—an insect in its larval stage and a mammal—react positively to one another when it comes to the all-consuming survival issue of finding food.

These caterpillars stay in their crawling larval stage for up to 14 years, sheltering in a cocoon during the long winters before finally becoming Arctic woolly bear moths for the final 24 hours of their lives.

The pika does not hibernate and gathers a food supply in its den. Its food-gathering territory surrounds the den and covers an area of around 700 square metres.

The researchers say they’ll continue their work on the caterpillar–pika relationship to explore the long-term implications for increased insect populations and competition for scarce food resources in northern mountain environments.

Barrio was the lead author on the collaborative research project, which was published April 24 in the journal Biology Letters.

The pikas of this research are collared pikas. The caterpillars are of the Arctic woolly bear moth species.

Did dinosaurs incubate eggs like birds?


Darla Zelenitsky from the University of Calgary collaborated with David Varricchio at Montana State University to closely examined the shells of fossil eggs from a small meat-eating dinosaur called Troodon. (Credit: Jay Im (University of Calgary)

From ScienceDaily:

Dinosaur Egg Study Supports Evolutionary Link Between Birds and Dinosaurs: How Troodon Likely Hatched Its Young

Apr. 18, 2013 — A small, bird-like North American dinosaur incubated its eggs in a similar way to brooding birds — bolstering the evolutionary link between birds and dinosaurs, researchers at the University of Calgary and Montana State University have found.

Among the many mysteries paleontologists have tried to uncover is how dinosaurs hatched their young. Was it in eggs completely buried in nest materials, like crocodiles? Or was it in eggs in open or non-covered nests, like brooding birds?

Using egg clutches found in Alberta and Montana, researchers Darla Zelenitsky at the University of Calgary and David Varricchio at Montana State University closely examined the shells of fossil eggs from a small meat-eating dinosaur called Troodon.

In a finding published in the spring issue of Paleobiology, they concluded that this specific dinosaur species, which was known to lay its eggs almost vertically, would have only buried the egg bottoms in mud.

“Based on our calculations, the eggshells of Troodon were very similar to those of brooding birds, which tells us that this dinosaur did not completely bury its eggs in nesting materials like crocodiles do,” says study co-author Zelenitsky, assistant professor of geoscience.

“Both the eggs and the surrounding sediments indicate only partial burial; thus an adult would have directly contacted the exposed parts of the eggs during incubation,” says lead author Varricchio, associate professor of paleontology.

Varricchio says while the nesting style for Troodon is unusual, “there are similarities with a peculiar nester among birds called the Egyptian Plover that broods its eggs while they’re partially buried in sandy substrate of the nest.”

Paleontologists have always struggled to answer the question of how dinosaurs incubated their eggs, because of the scarcity of evidence for incubation behaviours.

As dinosaurs’ closest living relatives, crocodiles and birds offer some insights.

Scientists know that crocodiles and birds that completely bury their eggs for hatching have eggs with many pores or holes in the eggshell, to allow for respiration.

This is unlike brooding birds which don’t bury their eggs; consequently, their eggs have far fewer pores.

The researchers counted and measured the pores in the shells of Troodon eggs to assess how water vapour would have been conducted through the shell compared with eggs from contemporary crocodiles, mound-nesting birds and brooding birds.

They are optimistic their methods can be applied to other dinosaur species’ fossil eggs to show how they may have been incubated.

“For now, this particular study helps substantiate that some bird-like nesting behaviors evolved in meat-eating dinosaurs prior to the origin of birds. It also adds to the growing body of evidence that shows a close evolutionary relationship between birds and dinosaurs,” Zelenitsky says.

No bloody Bahrain F1, says Damon Hill


Making their point: protesters in Bahrain who did not want the 2012 race to go ahead Photo: AP

From the Daily Telegraph in Britain:

Damon Hill: Bahrain should not hold grand prix as it could be used as a political tool

Former Formula One world champion Damon Hill has argued that the sport should not travel to Bahrain next week amid increasing signs that security forces in the Gulf kingdom are planning another drastic suppression of anti-government protests around the grand prix in 10 days’ time.

By Oliver Brown

6:30AM BST 11 Apr 2013

“The question is whether Formula One going to Bahrain would be enabling or furthering brutal repression, by appearing to endorse the treatment being meted out,” he said. “There is a perception that the sport is being used.”

Hill’s remarks, during a security briefing at Portcullis House, add to concerns in Westminster over the tinderbox political situation in Bahrain. Last year’s race was marred by scores of protests near the circuit …

Richard Burden, the Labour MP who called for the grand prix to be cancelled 12 months ago, said the kingdom had not carried out enough political reforms to justify holding the race again this year.

“If I was Jean Todt, president of the FIA, I would not want to run the race in the absence of the proper benchmarks and milestones,” he said. “Based on what I hear from the opposition forces, F1 will be even more of a focus for discontent this year.

“The demonstrations will increase. It is easy to keep F1 cocooned, but the sport should send out a message sensitive to the real situation in Bahrain. By its words and deeds, it must show that it is part of a broader international community.”

Burden expressed dismay with the comments of Bernie Ecclestone, F1’s commercial rights holder, who said last week he could see “no problems” in Bahrain and that he would be attending the grand prix at Sakhir. “I find that message surprising,” he continued. “The holding of this race should have some conditions attached to it – F1 should not see itself in a global bubble.”

The 2011 race had to be scrapped after at least 35 people were killed when Bahrain’s ruling Sunni elite crushed a pro-democracy uprising. After last year’s instalment went ahead against the backdrop of the tightest security, the opposition movement, Al Wefaq, claim that the reforms promised by King Hamad continue to be half-hearted at best. Unrest has again been witnessed in the outlying villages of Sitra and Sanabis.

See also here.

THIS year’s Grand Prix will again take place in Bahrain amid claims of widespread human rights abuses and, so far, the sport’s governing body have dodged the issue: here.

Baird’s support for regime in Bahrain: All part of Canada’s ‘royal’ foreign policy: here.

Dinosaurs could swim, new research


This video is called Extreme Dinosaurs (BBC Documentary).

From the University of Alberta in Canada:

New study produces strong evidence that two-legged dinosaurs were good swimmers

Dinosaurs are long extinct but their role in understanding life on Earth in the 21st century is vital, says a dinosaur researcher at the University of Alberta.

“Humans have been around for about 200,000 years; dinosaurs ruled for Earth for 160 million years,” says U of A paleontologist Scott Persons. “From dinosaurs we’ve learned about colour vision in some of today’s animals, and the ancient animals are linked to the evolution of other life we take for granted, like birds and flowering plants.”

Persons’ latest PhD research has produced some of the strongest evidence ever found that dinosaurs could paddle long distances. Persons arrived at that conclusion after examining unusual claw marks on fossilized rocks found in China.

Persons’ swimming-dinosaur study involved working with an international team of researchers in China’s Szechuan Province. Persons determined that a series of claw marks found in now well-known dinosaur tracks were left by the tips of a two-legged dinosaur’s feet.

“The dinosaur’s claw marks show it was swimming along in this river and just its tiptoes were touching bottom,” said Persons.

The claw marks cover a distance of 15 metres, which the researchers say is evidence of a dinosaur’s ability to swim with co-ordinated leg movements. Persons says the tracks were made by a carnivorous, two-legged dinosaur he estimates to have stood roughly one metre at the hip.

The research was conducted with a team of paleontologists on the ground in China, but Persons says he and his fellow U of A dinosaur hunters don’t have to go far afield to make important discoveries—one of the reasons he decided to study at the university.

I don’t even have to leave the Edmonton city limits, and when I do, the fossil treasure trove in the Alberta badlands is less than a day’s leisurely drive away,” said Persons.

Persons and his colleagues from the Szechuan Province fossil site will continue to analyze the dinosaurs’ swimming prowess with hopes that it will yield evidence related to today’s animals. In the meantime, Persons offers a few links paleontology has already established between life on Earth 65 million years ago and today.

“Want to know why our pet dogs or livestock have limited colour vision? It’s because early mammals sacrificed cones for rods in their eyes so they could see better in the dark and better avoid dinosaurs.

“Want to understand the widespread success of modern flowering plants? Well, they evolved under the selective pressures of herbivorous dinosaurs.

“Want to know where birds come from? Dinosaurs.”

Persons was a co-author on the research, which was published April 8 in the journal Chinese Science Bulletin.

See also here.

Canadian Conservatives support Bahrain dictatorship


This video says about itself:

Maryam Al-Khawaja on the Struggle for Human Rights in Bahrain

Feb 13, 2013

2012 Freedom Award winner Maryam Al-Khawaja speaks about the oppressive conditions in Bahrain that led to the imprisonment of Nabeel Rajab and other activists, and about the struggle that her father, Abdulhadi and sister, Zainab have faced in the fight for democracy and human rights in Bahrain.

From the Chronicle Herald in Canada:

Baird, Bahrain and the bogus Iran excuse

April 7, 2013 – 8:42pm

Last week, Foreign Affairs Minister John Baird visited Bahrain during his extended tour of the Middle East.

When the so-called Arab Spring wave of unrest first began in 2011, Bahrain was one of a number of states rocked by protests and violence, with the large Shiite majority staging massive protests and demanding the ouster of the ruling Sunni monarchy.

Similar public demonstrations led to rapid regime changes in Egypt and Tunisia, while in Libya and Syria they morphed into bloody armed rebellions.

The western powers heralded the removal of Egypt’s Hosni Mubarak and Tunisia’s Zine al-Abedine Ben Ali,

They ‘heralded’ it only after these two despotic allies of the USA, France, etc. had been driven away by the people. The vice president of the USA, Joseph Biden, denied that dictator Mubarak was a dictator and that he should resign, just before Mubarak resigned under the people’s mass pressure.

openly provided military aid to enable Libyan rebels to kill Moammar Gadhafi and, to this day, continue to provide assistance to the Syrian militias attempting to topple President Bashar al-Assad.

While we now know that these separate, but coincidental, revolutions had economic, religious, ethnic and tribal root causes, at the time, the pundits who dubbed this the Arab Spring sold it to us as the eruption of pro-democracy masses rising up against oppressive dictators.

Although this formula could have been applied to Bahrain, the protestations of the Shiite majority garnered almost no sympathy from the West. The reason for this is simple. Bahrain is a key U.S. ally and the country provides an important strategic naval base that supports the U.S. Fifth Fleet.

A successful Shiite-led regime change in Bahrain would certainly have jeopardized the cosy arrangement and would likely have drawn yet another Persian Gulf state into the Iranian sphere of influence.

To prevent this from happening, Bahraini security forces, assisted by troops from Saudi Arabia, were given a free hand in crushing the Shiite protesters.

An independent commission later confirmed that the Bahraini security forces had not only used excessive force, but also systemic torture in dealing with the crisis. To this day, human rights groups are claiming that Shiite activists are being detained and held under false pretences and, although largely unreported, there are still … demonstrations taking place in Bahrain.

Following his brief visit last week, Baird acknowledged to reporters that he had discussed these issues with his Bahraini counterparts.

“I commend [Bahrain] for their progress, but pushed them to make additional progress, and certainly offered Canadian support as they have that national dialogue,” said Baird.

Now, keep in mind that this is the same Baird who championed the Libyan rebels, urged them to continue the fight when a negotiated peace deal was in the offing and then staged a massive victory parade to celebrate the death of Gadhafi.

It is also the same Baird who initially met with the Syrian opposition leaders in exile and emerged barking, “Assad must go!”

Apparently, in Baird’s limited playbook, the use of martial force to oppress a majority is not wrong, so long as the oppressor is a key American ally.

And then, of course, there is always the “blame Iran” tactic. And, true to form, Baird used it to explain and/or excuse the Bahrainis for their use of extreme security measures.

“We should be very clear that Iran’s interference in some of its neighbours’ internal political affairs is something that’s distinctly unhelpful, and it is never motivated by good,” Baird told reporters.

Unfortunately for Baird, the independent commission that investigated the Bahraini crisis couldn’t find any direct link to the Iranian government.

Never mind, just throw it out there!

While it is true that Iran now exercises a lot of leverage with Iraq’s Shiite Prime Minister Nouri al-Maliki, and is one of the few supporters of embattled Syrian President Assad’s government, the truth is that Iran certainly does not hold a monopoly on regional political meddling.

Qatar and the United Arab Emirates, two of the other countries Baird visited last week, have also been extensively linked to the rebel movements in Libya and Syria.

While NATO air power was able to effect the defeat of Gadhafi loyalists in just 10 months, the civil war in Syria is now into its 26th month.

As was the case in Libya, the arms embargo in Syria is largely one-sided, with the international community turning a blind eye to weapons furnished to anti-Assad forces.

The death toll in the Syrian conflict is estimated at more than 70,000 and as many as four million civilians are believed to have been internally displaced by the ongoing violence.

One could easily make the argument that Qatar’s and the emirates’ financial support of anti-Assad fighters amounts to interference in a neighbour’s internal political affairs.

But Baird does not chastise them for that. It’s far easier just to blame Iran for doing the same thing.

Scott Taylor is editor of Esprit de Corps magazine.

Lynx video from Canada


This video from Canada says about itself:

March 2013 – This video was captured when conservation officer, Alex Taylor, responded to a call from Deer Lodge near Lake Louise in Banff National Park. Upon arriving, he found a female lynx apparently transfixed by her own reflection in a basement window. We speculate the lynx thought that her reflection was another animal posing a possible threat to her kitten, so she stayed to keep an eye on it. Alex observed to ensure mother and kitten avoided the road and parking lot until they reunited. This has been a special winter for normally reclusive lynx. We can’t be certain, but we think they have been more conspicuous while taking advantage of a cyclical rise in the local snowshoe hare population. A big thank you to Deer Lodge for securing the area and helping guests observe from a safe distance. Photo comparisons suggest that this is the same pair we saw a few weeks ago near the highway.

For photos, visit the gallery on Facebook:
http://www.facebook.com/banffnp

For more information about Banff National Park, visit the website:
http://www.parkscanada.gc.ca/banff

From Wildlife Extra:

Lynx and kitten pose for the cameras again

Lynx and kitten on camera again

March 2013 – On March 1, 2013, Parks Canada‘s Alex Taylor, photographed more striking images of a lynx family as they travelled near Deer Lodge in the Lake Louise area. Taylor was observing the health of the animals and working to keep them away from a nearby road and parking lot.

“This lynx family has been putting on quite the show this winter for a few incredibly fortunate park visitors,” said Taylor. “Given their reclusive nature, we don’t see them that often, so this winter has been pretty special. Though we can’t say for sure, we think they’ve been taking advantage of a rise in the local snowshoe hare population, which is their preferred food.”

The female and her kitten appeared on Wildlife Extra in February when Taylor captured images and video of them squeezing through a fence near Lake Louise. They’ve also been observed on several occasions at the nearby Lake Louise Ski Area.

“This is a great example of Parks Canada working with the public to help keep our wildlife safe while also sharing a really neat story,” said Rick Kubian, Parks Canada Resource Conservation Manager for the Lake Louise area. “We received a call from Deer Lodge saying that a lynx was acting strangely next to their building which prompted a quick response from our staff member.”

Preoccupied with reflection

In cooperation with Deer Lodge staff, Taylor was able to observe the mother lynx without disturbing it and determine it was not injured. The mother appeared to be preoccupied with her own reflection in the lodge’s ground floor windows, sitting almost motionless in front of the window for over 30 minutes.

“Deer Lodge staff did a great job of securing the area and keeping their guests a safe distance from the lynx so as not to disturb it,” said Taylor. “I’m pretty sure we all had an incredible and rare viewing experience. It is possible the adult lynx saw, in her own reflection, another lynx that she thought may have presented some sort of a threat to her kitten and she wanted to keep an eye on it.”

Eventually the kitten reappeared from around the side of the building and the pair, now reunited, disappeared into the forest.

Please report wildlife sightings in Banff, Kootenay and Yoho national parks by calling Parks Canada’s dispatch line at 1-888-WARDENS.