June 7th, 2008

my love

Honeybee Dance Breaks Down Cultural Barrier

Once again, a disclaimer for the newbs: How do I know this isn't old? I've read the rules and checked the TAGS LIST, archive, and it is NEW news (not from 1920).

ScienceDaily (Jun. 4, 2008) — Asian and European honeybees can learn to understand one another's dance languages despite having evolved different forms of communication, an international research team has shown for the first time.

The nine species of honeybees found worldwide separated about 30 to 50 million years ago, and subsequently developed different dance 'languages'. The content of the messages is the same, but the precise encoding of these languages differs between species.

Now researchers from Australia, China and Germany have discovered that the two most geographically distant bee species -- the European honeybee Apis mellifera and the Asian honeybee Apis cerana -- can share information and cooperate to exploit new food sources.

'We know that the members of a honeybee colony routinely exchange information via dance about the location of newly discovered locations, like feeding places, water or new nesting sites," explains Dr Shaowu Zhang from the Research School of Biological Sciences at The Australian National University.

"The scouts perform the so-called bee dances inside the nest. The coordinates of distant locations are encoded in the waggle phase of this ballet, with the direction and distance to the food source indicated by the orientation and duration of the dance. This duration differs across honeybee species, even if they fly the same distance in the same environment. It's these differences which we can think of as distinct languages."

The research team is the first to successfully study the behaviour of a colony containing a mixture of two different species of bees. One of the first findings of this novel approach was that Asian and European honeybees, after some time of adjustment in the mixed colony, could share information and work together to gather food. Asian honeybees followed the dances of European forager bees, and deciphered the encoded information correctly.

"The dance language of honeybees is among the best studied communication systems in the animal kingdom. Nevertheless, surprises are still possible, as we have shown," Dr Zhang said. "This work has potentially major implications for our understanding of animal communication. Next we plan to study exactly to what extent variation is a factor between different bee dance languages."

The research was carried out by an international collaborative team. In addition to the work done at ANU, the research team included Dr Shenglu Chen and Songkun Su from Zhejiang University in China and Dr Jürgen Tautz from Würzburg University in Germany.

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Praya Dubia

Checked the tags for this little (ha!) guy and didn't see mention of him anywhere, so I figured it was safe to share.

First heard of this one in the Wii game Endless Ocean (cuz I love the fishies) and finally got brave enough to explore The ABYSS (wtf is with the scary-ass drama-llama music?).

BEHOLD! The Amazing Exploding Jelly-Thing!

The Praya Dubia, or Giant siphonophore, can reach up to 40-50 m (131-164 ft). They're found in deep sea, and go all esplodey when taken out of their natural home - which is pressurized at about 0,47 tons/cm2. AND? They glow.

Wiki Link: http://en.wikipedia.org/wiki/Praya_dubia

The University of California Santa Barbara: http://www.lifesci.ucsb.edu/~biolum/organism/pictures/praya.html
Sharks - hammerheads

And remember kids - well done is good for you ^_^

First post FTW (or FTF)

Today we'll be talking about tapeworms, beef tapeworms, pork tapeworms and the wonderful structures that keep them firmly lodged into the inside of your guts, like this little bugger:


Tape worms are endoparasitic flatworms ( a.k.a Cestordes) specializing in multi-host life circles which include much shape-shifting, a lot of self-copying and finally an adult in large vertebrates, such as us, which reproduce with itself to make a thousands of the likes of it.

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