<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:wfw="http://wellformedweb.org/CommentAPI/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
	xmlns:slash="http://purl.org/rss/1.0/modules/slash/"
	>

<channel>
	<title>Science Today &#187; cephalopods</title>
	<atom:link href="http://www.calacademy.org/sciencetoday/tag/cephalopods/feed/" rel="self" type="application/rss+xml" />
	<link>http://www.calacademy.org/sciencetoday</link>
	<description>Breaking science news from around the world</description>
	<lastBuildDate>Thu, 02 May 2013 18:38:32 +0000</lastBuildDate>
	<language>en-US</language>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
	<generator>http://wordpress.org/?v=3.5.1</generator>
		<item>
		<title>The Kraken Did It</title>
		<link>http://www.calacademy.org/sciencetoday/the-kraken-did-it/555733/</link>
		<comments>http://www.calacademy.org/sciencetoday/the-kraken-did-it/555733/#comments</comments>
		<pubDate>Thu, 13 Oct 2011 02:13:27 +0000</pubDate>
		<dc:creator>molly</dc:creator>
				<category><![CDATA[Earth]]></category>
		<category><![CDATA[Life]]></category>
		<category><![CDATA[Top Story]]></category>
		<category><![CDATA[cephalopods]]></category>
		<category><![CDATA[ichthyosaur]]></category>
		<category><![CDATA[octopus]]></category>
		<category><![CDATA[squid]]></category>
		<category><![CDATA[triassic]]></category>

		<guid isPermaLink="false">http://www.calacademy.org/sciencetoday/?p=5733</guid>
		<description><![CDATA[Did an ancient squid really eat large marine reptiles and then arrange the bones in a neat pattern? Doubtful, says our expert.]]></description>
				<content:encoded><![CDATA[<p>Did you hear the one about the ancient squid that captured the 45-foot <a href="http://www.ucmp.berkeley.edu/people/motani/ichthyo/intro.html" target="_blank">ichthyosaur</a> during the Triassic Period?</p>
<p>The tentacled creature, named <a href="http://en.wikipedia.org/wiki/Kraken" target="_blank">kraken</a> after the mythical sea monsters, took the large marine reptiles back to their dens, called middens, and dismembered them. The intelligent kraken then arranged the vertebral discs in double line patterns, with individual pieces nesting in a fitted fashion as if they were part of a puzzle. A puzzle that resembles the pattern of sucker discs on a cephalopod tentacle, with each vertebra strongly resembling a <a href="http://en.wikipedia.org/wiki/Coleoidea" target="_blank">coleoid</a> sucker.</p>
<p>Good one, right? A weird, creepy tale, full of mythical monsters! Except it’s not a joke or a treatment for a B-movie: it’s part of a scientific abstract presented Monday at the annual meeting of the <a href="http://www.geosociety.org/meetings/2011/" target="_blank">Geological Society of America</a> in Minneapolis.</p>
<p>And then the <a href="http://www.cbsnews.com/stories/2011/10/10/scitech/main20118233.shtml" target="_blank">news</a> agencies began picking it up. So it must be true, right?</p>
<p>“There is no evidence that this &#8216;kraken&#8217; existed,” is <a href="http://www.calacademy.org/academy/exhibits/aquarium/staff/rross/" target="_blank">Rich Ross</a>’s take on the story. Rich is the cephalopod guy here at the Academy and loves the things. He can talk to you for hours about these many-armed marine animals… (“Cuttlefish are like alien hummingbirds that hunt. They’re brutal predators. Their skin is amazing.” “Octopus are like super-caffeinated snails with arms and no shell. They’re vicious predators and their ability to camouflage is unbelievable!” You get the point. Check out his <a href="http://packedhead.net/" target="_blank">blog</a> for more insights.) But about these kraken, he just shakes his head. “Squids don’t do middens, modern octopus wouldn’t do this either. There’s no evidence—it could’ve been anything.”</p>
<p>According to paleontologist <a href="http://www.mtholyoke.edu/acad/facultyprofiles/ma_mcmenamin.html" target="_blank">Mark McMenamin</a>, the researcher behind Monday’s presentation, the evidence is a bizarre fossil site at Berlin-Ichthyosaur State Park in Nevada. The site holds the remains of nine 45-foot ichthyosaurs, of the species<em> Shonisaurus popularis</em>.</p>
<p>“It was a very odd configuration of bones,” according to McMenamin. The different degrees of etching on the bones suggested that the shonisaurs were not all killed and buried at the same time. It also appeared that the bones had been purposefully rearranged. That it got him thinking about a particular modern predator known for just this sort of intelligent manipulation of bones.</p>
<p>“Modern octopus will do this,” McMenamin explains.</p>
<p>Of course, it’s the perfect Triassic crime because octopuses are mostly soft-bodied and don’t fossilize well. Only their beaks are hard and the chances of those being preserved nearby are very low. That means the evidence for the murderous kraken remains purely circumstantial.</p>
<p>Without hard evidence, Rich Ross is incredibly skeptical. As well as many other scientists, according to <a href="http://www.wired.com/wiredscience/2011/10/the-giant-prehistoric-squid-that-ate-common-sense" target="_blank"><em>Wired</em></a> and <a href="http://www.nature.com/news/2011/111011/full/news.2011.586.html" target="_blank"><em>Nature News</em></a>. Rich sums it up well: “You could just as well say that aliens did this.”</p>
<p><em>Image: Mark McMenamin</em></p>
<img width="110" height="62" src="http://www.calacademy.org/sciencetoday/wp-content/uploads/2011/10/ichthyosaur-vertebrae-660x498-110x62.jpg" class="attachment-110x62 wp-post-image" alt="ichthyosaur-vertebrae-660x498" />]]></content:encoded>
			<wfw:commentRss>http://www.calacademy.org/sciencetoday/the-kraken-did-it/555733/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Endeavour&#8217;s Passengers</title>
		<link>http://www.calacademy.org/sciencetoday/endeavours-passengers/554536/</link>
		<comments>http://www.calacademy.org/sciencetoday/endeavours-passengers/554536/#comments</comments>
		<pubDate>Tue, 17 May 2011 18:23:40 +0000</pubDate>
		<dc:creator>molly</dc:creator>
				<category><![CDATA[Life]]></category>
		<category><![CDATA[Space]]></category>
		<category><![CDATA[Top Story]]></category>
		<category><![CDATA[bacteria]]></category>
		<category><![CDATA[C. elegans]]></category>
		<category><![CDATA[cephalopods]]></category>
		<category><![CDATA[Endeavour]]></category>
		<category><![CDATA[microbes]]></category>
		<category><![CDATA[nasa]]></category>
		<category><![CDATA[space shuttle]]></category>
		<category><![CDATA[squid]]></category>
		<category><![CDATA[worms]]></category>

		<guid isPermaLink="false">http://www.calacademy.org/sciencetoday/?p=4536</guid>
		<description><![CDATA[Joining the astronauts in space are squid, worms and microbes, oh my!]]></description>
				<content:encoded><![CDATA[<p>Space Shuttle Endeavour’s successful launch yesterday sent not only <a href="http://www.nytimes.com/2011/05/17/science/space/17shuttle.html?ref=science">Gabrielle Gifford’s husband</a> and his five fellow astronauts into space, but an assortment of creatures, too—baby bobtail squid, worms and a few microorganisms.</p>
<p>The squid are part of an experiment to see if, like some collegiate females on spring break, good bacteria “go wild” in the microgravity of space. Bobtail squid use bacteria called <a href="http://en.wikipedia.org/wiki/Vibrio_fischeri"><em>Vibrio fischeri</em></a> to generate light. According to <a href="http://news.discovery.com/space/bobtail-squid-hitches-a-ride-on-space-shuttle.html"><em>Discovery News</em></a>:</p>
<p style="padding-left: 30px;">That light helps the squid hunt for prey in dark waters. It also provides camouflage from any organisms trying to eat him, because the squid doesn&#8217;t cast a telltale shadow on the ocean floor as a result of the moon&#8217;s rays shining down into the water.</p>
<p>Previous shuttle experiments have shown what happens to harmful bacteria in space, but this will be the first experiment with <em>beneficial</em> bacteria.  Scientists are hoping that <a href="http://www.newscientist.com/article/dn20474-squid-go-into-space--for-the-sake-of-humanity.html">these results</a> with squid will translate to beneficial bacteria with humans.</p>
<p>The <a href="http://www.nasa.gov/pdf/538352main_sts134_presskit_508.pdf">NASA press kit</a> reports that worms are part of the mission:</p>
<p style="padding-left: 30px;">One NASA experiment known as Biology (Bio) will use, among other items, <em>C. elegans </em>worms, that are descendants of worms that survived the STS-107 space shuttle Columbia accident.</p>
<p>Haven’t these <a href="../c-elegans-biorobot/">worms</a> been through enough?!</p>
<p><a href="http://www.wired.com/wiredscience/2011/05/squid-microbes-endeavour/"><em>Wired UK</em></a><em> </em>has a breakdown of other microbes joining <a href="http://www.nasa.gov/mission_pages/shuttle/main/index.html">STS134</a>:</p>
<p style="padding-left: 30px;">The microbes on-board Endeavour include the tardigrades (nicknamed Water Bears) which are large extremophiles that can withstand temperatures as biting as absolute zero, and as hot as 150 degrees Celsius. They’re joined by the <em>Deinococcus radiodurans</em> (which NASA dubbed “Conan the Bacterium“) which can survive upward of 15,000 Gy of radiation — 10 Gy is more than enough to kill an average human.</p>
<p style="padding-left: 30px;">
<p style="padding-left: 30px;"><em>Haloarcula marismortui</em> (Old Salty) loves salt, and lives in levels of high salinity that would kill other organisms. <em>Pyrococcus furiosus</em> (Fire Eater) is all about heat, and thrives in temperatures over 100 degrees Celsius. <em>Cupriavidus metallidurans</em> (which doesn’t have a nickname, unfortunately) plays a vital role in the formation of gold nuggets, thanks to its love of gold tetrachloride: a compound that is toxic to most other microorganisms.</p>
<p style="padding-left: 30px;">
<p style="padding-left: 30px;">Finally there’s <em>Bacillus subtilis</em> (The Average Joe), which is a model organism used in hundreds of biological experiments. It’s been into space many times before, so it’ll be a good comparison point for other studies.</p>
<p>You know, Dorothy only had lions and tigers and bears to face in <a href="http://www.imdb.com/title/tt0032138/">Oz</a>…</p>
<p><em>Image by <a title="User:Biopics" href="http://commons.wikimedia.org/wiki/User:Biopics">Hans Hillewaert</a>/Wikimedia</em></p>
<img width="110" height="62" src="http://www.calacademy.org/sciencetoday/wp-content/uploads/2011/05/Sepiola_atlantica-110x62.jpg" class="attachment-110x62 wp-post-image" alt="Sepiola_atlantica" />]]></content:encoded>
			<wfw:commentRss>http://www.calacademy.org/sciencetoday/endeavours-passengers/554536/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
	</channel>
</rss>