Saturday, June 1, 2013

The scoop on bird poop: Evolving diversity of microbial life in bird guts

May 31, 2013 ? Gut bacteria are known to have a central role both in human and in animal health. Animals acquire different bacteria as they age but how the microbial communities in the bodies of wild animals change over time is not well understood. Wouter van Dongen and colleagues at the Vetmeduni Vienna have examined the gastrointestinal bacteria of chick and adult black-legged kittiwakes. Surprisingly, the microbial assemblages of chicks and adults generally differ greatly, with only a few types of bacteria in common.

The findings have recently been published in the journal BMC Ecology.

Gastrointestinal bacteria are important for digestion, immune functions and general health. Wouter van Dongen and colleagues from the Konrad Lorenz Institute of Ethology of the Vetmeduni Vienna have collaborated with scientists from the Laboratoire ?volution & Diversit? Biologique (EDB), Toulouse and from the US Geological Survey, Anchorage to study the cloacal bacterial assemblies of black-legged kittiwakes (Rissa tridactyla). The bacteria in the cloaca are known to be similar to assemblages deeper within the gastrointestinal tract, so the researchers examined samples from the cloaca of birds at different ages to look indirectly at gut bacteria.

Flushing bacteria

To obtain bacterial samples, the researchers "flushed" the birds' cloacae by gently infusing a salt solution into the cloacae and collecting the liquid. The bacterial diversity in the cloaca of each bird could be estimated with the aid of molecular genetic techniques. The scientists were able to identify different bacterial assemblages and thus to draw a clear picture of how bacterial communities in bird guts change as the birds age.

From a youthful hodgepodge to a stable community

There turned out to be a great variety of bacterial species in the guts of kittiwake chicks but the assortment in the adults was much less diverse. Astonishingly, the sampled chicks and adults had only seven out of a total of 64 bacteria species in common and some of the bacteria that were very common in adults were not present in chicks at all. Wouter van Dongen says, "We were very surprised to find that the bacteria in chick gastrointestinal tracts are so different from those in adults. Given that chicks share the nest with their parents and eat food that is regurgitated by the parents, we expected the level of bacterial sharing to be a lot higher." The scientists? findings suggest that young birds are susceptible to many species of bacteria that pass through their gut. As the animals mature, the number of bacterial species decreases. Particular groups of bacteria that stay ultimately form a stable community.

A number of causes

It is known from other studies that the composition of gastrointestinal microbes changes according to the age of the host. The differences may correlate with changes in the birds? gut chemistry over time or with changes in diet or may result from competition between bacterial species. A more developed immune system in adults and the lack of mobility of the young could also play a part. Further studies are needed to determine the causes and consequences of the variation in the bacterial assemblages in guts of wild birds.

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The above story is reprinted from materials provided by Veterin?rmedizinische Universit?t Wien.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. Wouter FD van Dongen, Jo?l White, Hanja B Brandl, Yoshan Moodley, Thomas Merkling, Sarah Leclaire, Pierrick Blanchard, ?tienne Danchin, Scott A Hatch, Richard H Wagner. Age-related differences in the cloacal microbiota of a wild bird species. BMC Ecology, 2013; 13 (1): 11 DOI: 10.1186/1472-6785-13-11

Note: If no author is given, the source is cited instead.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/~3/k0MAdBmzEdI/130531105238.htm

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Needs and threats test GOP on small government (The Arizona Republic)

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China's entrepreneurs expand global presence

BEIJING (AP) ? The force behind China's biggest takeover of an American company is a 71-year-old meat-packing entrepreneur dubbed "China's Chief Butcher" by the press who built an empire on his country's voracious appetite for pork.

The $4.7 billion bid for Smithfield Foods by Wan Long, chairman of Shuanghui International, is another big step up for Chinese entrepreneurs who are emerging from the shadow of state-owned corporate giants and expanding on the global stage.

Under pressure to keep economic growth strong, the new government of President Xi Jinping has promised a bigger role and lighter regulatory burden to entrepreneurs who generate China's jobs and wealth. Still, it is unclear how far the ruling Communist Party is willing to go in making crucial changes including curbing the dominance of state industry.

"If these Chinese entrepreneurs who are highly capable are allowed to get on and do what they do best, we're going to see a lot more deals like this," said Charles Maynard, senior managing director of Business Development Asia, which advises companies on acquisitions. "Despite lots of hurdles, they are increasingly able to think globally and act globally."

Another private investor, Fosun International, bought a stake last year in Club Med and says it will team up with insurer AXA to acquire the rest of the French resort operator. Last year, a private firm set the current record for the biggest Chinese takeover of an American company when Wanda Group bought the AMC cinema chain for $2.6 billion.

China's private companies follow a different path from Western buyers pursuing acquisitions.

Cash-rich but inexperienced, they shop for brands, technology and skills to speed their development. Unlike Western buyers, which might lay off employees, Chinese companies keep them and sometimes hire more. Sweden's Volvo Cars expanded its workforce after it was acquired in 2010 by Chinese automaker Geely Holding Group.

"We were especially attracted to Smithfield for its strong management team, leading brands and vertically integrated model," said Shuanghui's Wan in the statement announcing this week's bid.

The purchase was endorsed by Smithfield's board but still require approval from shareholders and U.S. regulators.

Reflecting the sensitivity of Chinese acquisitions at a time of American complaints about computer hacking and market access, the companies said they would submit the proposed deal for a U.S. government national security review.

The announcement comes as President Barack Obama and China's Xi prepare to meet for the first time, overshadowed by mounting American frustration about a wave of cyber intrusions traced to China and possibly its military that targets government and commercial secrets. Obama is expected to press Xi to crack down on cybercrime.

The Chinese acquisition of a major food producer "is a bit concerning," said U.S. Sen. Chuck Grassley in a statement. He said regulators should look at what role the communist Beijing government plays in Shuanghui and whether the acquisition might affect national security.

Some, however, warn against linking the deal to strains in the U.S.-China relationship.

"This is just not the kind of deal that would or should rankle the U.S. government," said James Zimmerman, a lawyer in Beijing for the firm Sheppard Mullen and a former chairman of the American Chamber of Commerce in China, in an email.

"The U.S. government would do more harm than good if they use this transaction to leverage out of China better behavior on unrelated issues," said Zimmerman. "Promoting free trade and open investment only comes from setting an example."

Despite their role in driving growth, private companies like Shuanghui still are second-class corporate citizens behind state companies that benefit from monopolies and low-cost access to bank loans, land and energy.

The World Bank and other advisers have warned that model requires drastic change if China's growth is to stay strong. They say more industries have to be opened to private and possibly foreign competitors.

A statement by the Cabinet's planning agency on May 24 promised such change. But it consisted mostly of repeating previous pledges and gave no details of possible reforms. Those are likely to provoke fierce opposition from party factions that depend on state industry to supply money and jobs to reward their supporters.

Entrepreneurs' expansion abroad comes as China's explosive double-digit economic growth that powered their rise slows.

The slowdown is largely self-imposed as Chinese leaders try to nurture more self-sustaining growth based on domestic consumption instead of exports and investment. But consumer spending growth is slow. That has forced Beijing to prop up China's rebound from its deepest downturn since the 2008 global crisis with spending on building subways and other public works, which pumps still more money into state industry.

Growth of the world's second-largest economy is forecast at 7 to 8 percent over the next decade ? far above the low single digits expected from the United States and Europe but China's weakest performance since the '90s.

"They know this economy may have rough days ahead, so why not take their capital and diversify around the world?" said Jim McGregor, chairman for Greater China at consulting firm APCO.

State-owned oil and mining companies still account for China's biggest deals abroad, including multibillion-dollar investments in Australia, Africa and Latin American. In 2007, China's sovereign wealth fund bought a 9.9 percent stake in Morgan Stanley for $5.6 billion.

But smaller private companies are expanding in a wider array of industries including technology, manufacturing, food processing and real estate.

Bright Foods acquired a majority stake last year in Weetabix, which makes Alpen muesli. Hanergy Group, a builder of hydroelectric dams, bought two makers of solar panels ? MiaSole in California and Germany's Solibro.

Shuanghui's Wan, a former soldier, started his rise in 1985 when coworkers elected him manager of a slaughterhouse in his hometown of Luohe in central China.

The economy was in the early stages of then-supreme leader Deng Xiaoping's reforms. The ruling party had begun allowing privately owned restaurants and other small businesses. Rolling back its "iron rice bowl" policies of jobs for life and nationwide wage standards, Beijing was starting to let companies pay employees for the first time based on their productivity.

According to Caixin, China's leading business magazine, Wan turned around his struggling slaughterhouse with such radical innovations for the time as operating three shifts around the clock, every day of the year. It said that in the first year the business swung to a profit of 5 million yuan (about $1.7 million at that time).

The company grew rapidly while undergoing repeated restructurings. It split into two competing companies at one point before reuniting. In 2006, its managers bought out the remaining state stake using money from investors including Goldman Sachs and Singapore state investment company Temasek Holdings Ltd.

Today, the company is controlled through Shuanghui International Holdings Ltd. in Hong Kong, of which Wan is chairman. The operating unit on the mainland, Shuanghui Investment and Development Co., says it is China's biggest meat processor, with annual sales in excess of 50 billion yuan ($8 billion) and more than 60,000 employees.

China consumes more than half the world's pork. That makes the tie-up with Shuanghui a possible boost to Smithfield by giving the American producer a readymade distribution network for its Armour, John Morrell and other brands as Chinese buy more processed and packaged meat.

Shuanghui's reputation was battered in 2011 when state television revealed its pork contained clenbuterol, a banned chemical that makes pork leaner but can be harmful to humans.

The company apologized and promised to improve quality ? a process that might benefit from an infusion of know-how from Smithfield.

"Pork in China is a vegetable. It's everywhere," said McGregor. "Good for China, trying to up its game on best practices."

Source: http://news.yahoo.com/chinas-entrepreneurs-expand-global-presence-064616656.html

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Catholic influence wanes amidst gay marriage fight

PROVIDENCE, R.I. (AP) ? Frank Ferri made peace with God years ago. He defeated the Roman Catholic Church just last month.

The openly gay state representative led the fight to legalize same-sex marriage in what may be the most Catholic state in the nation's most Catholic region. And, in early May, Rhode Island became the sixth and final New England state to allow gay couples to marry when its Democratic-dominated Legislature, led by an openly gay House speaker, reversed course after years of the Catholic Church successfully lobbying lawmakers to resist legalization.

"They put the fear of God into people," Ferri said, claiming that "the influence of the church" had been the primary stumbling block as every other neighboring state ? and many people across the country ? started embracing gay marriage.

Ferri's victory marked the Catholic Church's most significant political defeat in an area where more than 40 percent of the population is Catholic. Perhaps more problematic for the church: Its state-by-state setbacks on gay marriage illustrate a widening divide between the church hierarchy and its members, which may be undermining Catholic influence in American politics.

The disconnect plays out in polling.

In March, a Washington Post-ABC News poll found that a majority of Catholics, 60 percent, felt the church was out of touch with the views of Catholics in America today. And a CBS News/New York Times poll in February found that 78 percent of Catholics said they were more likely to follow their own conscience than the church's teachings on difficult moral questions. That poll highlighted several areas where most Catholics break with church teachings: 62 percent of American Catholics think same-sex marriages should be legal, 74 percent think abortion ought to be available in at least some instances and 61 percent favor the death penalty.

All this comes amid a leadership shift in the Vatican, where the newly selected Pope Francis has traditionally taken a more pragmatic approach than his predecessor on divisive social issues. While a bishop in Argentina, Francis angered other church leaders by supporting civil unions for gay couples ahead of that country's vote to legalize gay marriage.

He has taken no such position as pope.

Kathleen Kennedy Townsend, a member of one of the most storied Catholic families in American politics, says she's encouraged by Francis' early leadership but warns that the church's political influence will continue to wane unless it adapts.

"Gay marriage is part of a larger refusal on the part of the church to listen to, and to understand, the people in the pews," said Townsend, who still regularly attends church and wrote the book, "Failing America's Faithful: How Today's Churches Are Mixing God With Politics and Losing Their Way."

Church officials in Washington, Boston and Providence declined to be interviewed for this report.

The church for decades has employed aggressive lobbying efforts across the country on a host of political issues, with Catholic leaders having used the power of the pulpit and substantial financial resources to maintain clout. At times they've gone so far as to tell leading Catholic lawmakers they were not welcome to receive communion if they opposed church teachings on issues like abortion and gay marriage.

These days, the church remains active in political battles over abortion, President Barack Obama's health care law, poverty and immigration even though they've had little success influencing the gay marriage debate here and elsewhere.

In many statehouses, the church relies on lobbying consortiums made up of lay people, known as Catholic conferences, to influence state policy, fueled by donations from dioceses across the country. In Washington, the church's primary voice is the United States Conference of Catholic Bishops, which had an annual budget last year of $26.6 million, according to the Pew Forum of Religion and Public Life.

"They've certainly been players at the national level," said Mark Silk, the director of Trinity College's Leonard Greenberg Center for the Study of Religion in Public Life.

He noted that the church has been most successful in recent years by building alliances with other religious lobbies, including evangelicals, to help shape public policy such as the contraception provision in the president's health care law. Religious leaders also have successfully pushed to tighten abortion laws in some states.

Thirty states have adopted constitutional provisions limiting marriage to a man and a woman, although most are in Southern and Western states where there are fewer Catholics.

Silk suggested that some Catholic leaders in the United States may be eroding their influence by "jumping up and down" to fight gay marriage despite strong public support.

As American attitudes rapidly shifted in favor of legalized same-sex marriage in recent months, the archbishop of San Francisco, Salvatore Cordileone, likened gay marriage to male breastfeeding and denounced Rhode Island's vote as violating "the very design of nature."

In Minnesota, Catholic leaders spent nearly $1 million last year to support a ballot measure banning gay marriage. The year before, the Archdiocese of St. Paul and Minneapolis produced and distributed 400,000 copies of a DVD in which Archbishop John C. Nienstedt called same-sex marriage, at best, "an untested social experiment."

Thousands of Minnesota Catholics returned the DVDs in protest. Last month, the state Legislature voted to legalize gay marriage, making Minnesota the 12th state to do so.

In Providence, the Rev. Bernard Healey led the statehouse lobbying effort to counter legalization attempts. The Catholic priest is well-known in the Rhode Island Capitol's marble hallways, long patrolling them in his black shirt and clerical collar.

In late April, before the final gay marriage vote, Providence Bishop Thomas J. Tobin weighed in by warning Rhode Island lawmakers: "It is only with grave risk to our spiritual well-being and the common good of our society that we dare to redefine what God himself has created."

The Rhode Island Legislature overwhelmingly voted days later to support same-sex marriage.

That prompted Tobin to condemn "immoral or destructive behavior" and say that Catholics should "examine their consciences very carefully" before deciding whether to attend gay marriage ceremonies, "realizing that to do so might harm their relationship with God and cause significant scandal to others."

As for Ferri, he said he's at peace with God, regardless of the warnings of the church. A faithful member of his Catholic church choir for decades, he recalled sitting alone at the church altar while struggling with his homosexuality years ago.

"I got a message from God: 'You're going to be OK. Be who you are,'" he said during a recent interview in his small statehouse office.

Noting that a church lobbyist would be pushing abortion-related legislation later that day, Ferri said the Catholic Church will always have some political influence in Rhode Island.

"They just picked the wrong battle this time. And I think it hurt them," he said.

___

Associated Press writer Brian Bakst in Minnesota and AP Director of Polling Jennifer Agiesta in Washington contributed to this report.

Source: http://news.yahoo.com/catholic-influence-wanes-amidst-gay-marriage-fight-081824785.html

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Ad hoc 04: Star Trek Into Darkness

Ad hoc 04: Star Trek Into Darkness

Take a bunch of tech geeks who also happen to enjoy scattering their atoms across the galaxy, put them in front of mics, hit the record button, and what do you get? Another impromptu episode of the Federation's favorite podcast, that's what.

Join Guy English, Georgia, Clayton Morris, Derek Kessler, Bryan Bishop, and Rene to talk Star Trek Into Darkness. From plot holes to set pieces, Klingons to cryogenics, lens flares to bikini flashes, Kirk to KAAAAAAAAAHN, we're nerding out over, and nitpicking, JJ Abrams' second take at Trek.

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Source: http://feedproxy.google.com/~r/TheIphoneBlog/~3/LHzxq4NdSNI/story01.htm

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Rounded stones on Mars evidence of flowing water

May 30, 2013 ? Observations by NASA's Mars rover Curiosity have revealed areas with gravel and pebbles that are characteristic of a former riverbed. Researchers, including members of the Niels Bohr Institute, have analysed their shapes and sizes and the rounded pebbles clearly show that there has been flowing water on Mars. The results are published in the scientific journal, Science.

The Mars rover's stereo camera took pictures of a few areas with densely packed pebbles, cemented together like concrete. The image field of an area named Hottah was a mosaic of approximately 1.4 meters x 80 centimeters. But when the picture is taken at an angle from the camera arm's two meter high mast down towards the ground-level, it gives a slightly distorted view in which the size of the rocks depend on their location in the image frame. To remedy this, the researcher first had to process the image so the proportions are comparable.

"Next, we divided the image into smaller fields of 10 mm and analysed the gravel, which consists of coarse grains of sand around 1/3 mm. We examined the pebbles which are between 4 and 40 mm in greater detail. Altogether we made a thorough analysis of 515 pebbles," explains Asmus Koefoed, a research assistant in the Mars Group at the Niels Bohr Institute at the University of Copenhagen.

Smooth, rounded stones

When rocks are worn by the wind, they become angular and rough -- similar to the result of sandblasting. When rocks are moving in flowing water, they are worn down in a completely different way. They tumble around in a mixture of water and sand bumping into each other and the corners and edges of the rocks eventually become smooth and rounded.

"We could see that almost all of the 515 pebbles we analysed were worn flat, smooth and round. We have classified them according to their geometry, which can be described using a single number -- the 'Corey shape factor', where 0 describes rocks that are completely flat like a piece of paper and 1 means they are perfect spheres," explains Asmus Koefoed.

There are both light and dark rocks in various shades and colours -- much like the original rocks on Earth and Mars. Densely packed deposits were formed locally, which occur when fine sand and mud flow along with the gravel and pebbles. This all clumps together into something that can harden into a concrete-like substance, a conglomerate. The solid sediments have then subsequently been worn flat on the top by wind-borne sand particles that flowed past the conglomerate during events of very strong wind.

Current like a Danish stream

The new results are interesting because they tell us about the climate history of Mars. What would it take to cause the stones to look like they do?

"In order to have moved and formed these rounded pebbles, there must have been flowing water with a depth of between 10 cm and 1 meter and a flow rate of about 1 meter per second -- or 3.6 km/h -- slightly faster than a typical natural Danish stream," explains Morten Bo Madsen, head of the Mars research group at the Niels Bohr Institute.

So it has not just been sporadic flowing water that evaporates quickly, but prolonged warmer periods where the streams were active. There was probably a higher atmospheric pressure on the planet than today, where the pressure is below about 1000 Pascal, about one percent of the Earth's atmospheric pressure. This means that the planet must have had a denser atmosphere, which caused a greater surface pressure than today.

Until now, it was believed that the warm period on mars was as far back as 3.5-3.7 billion years ago, but with the new studies it is now believed that this period may have extended to only 2-3 billion years ago.

Mars has thus been a dynamic place, which would not have been totally inhospitable to life, as we know it on Earth. Apart from running water recent investigations with Curiosity have shown that there were a pH-neutral environment and minerals that microbial life could use for nourishment.

Curiosity has thus achieved one of its objectives, namely to investigate whether there are areas on Mars, which could have been habitable for microbial life.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_technology/~3/iFvh6rPHdsg/130530142011.htm

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Hepatitis A outbreak linked to Ore. berry farm (The Arizona Republic)

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