Just a quick post with a really awesome video showing a chameleon hatcing out in a man's palm. This is one the best and most emotional things I have ever seen on youtube. I am sure you will agree! Enjoy:
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|Naked Mole Rat|
Credit: UT Health Science Center at San Antonio
"I think this factor is part of an overall process or mechanism by which naked mole rats maintain their protein quality." said first author Karl Rodriguez.
"Moreover, mouse, human, and yeast proteasomes exposed to the proteasome-depleted, naked mole-rat cytosolic fractions, recapitulate the observed inhibition resistance, and mammalian proteasomes also show increased activity." reads the abstract.
"Enhancement of protein quality, meanwhile, leads to longer life in yeast, worms, fruit flies and naked mole rats" said Dr. Rodriguez.
|Juvenile Polypterus senegalus|
"Stressful environmental conditions can often reveal otherwise cryptic anatomical and behavioural variation, a form of developmental plasticity. We wanted to use this mechanism to see what new anatomies and behaviours we could trigger in these fish and see if they match what we know of the fossil record." said Emily Standen, a former McGill post-doctoral student who led the project.
"Anatomically, their pectoral skeleton changed to became more elongate with stronger attachments across their chest, possibly to increase support during walking, and a reduced contact with the skull to potentially allow greater head/neck motion." said Trina Du, a McGill Ph.D. student and study collaborator.
"Because many of the anatomical changes mirror the fossil record, we can hypothesize that the behavioural changes we see also reflect what may have occurred when fossil fish first walked with their fins on land." said Hans Larsson, Canada Research Chair in Macroevolution at McGill and an Associate Professor at the Redpath Museum.
"This is the first example we know of that demonstrates developmental plasticity may have facilitated a large-scale evolutionary transition, by first accessing new anatomies and behaviours that could later be genetically fixed by natural selection." said Larsson.
Notice the enlarged sting-like genitalia
Credit: Gailhampshire (CC BY 2.0)
|Close up of the scorpion-like tail males have |
Credit: "Skorpionsfliege Panorpa communis male genital" by Richard Bartz,
Munich aka Makro Freak Image:MFB.jpg - Own work.
Licensed under CC Attribution-Share Alike 2.5 via Wikimedia Commons
|Female scorpionfly, No sting here!|
"Panorpa communis 2006-07-11" by Algirdas at lt.wikipedia
Licensed under the GFDL
|Bear saves a drowning crow (red circle)|
|Mata mata head close up. Notice the horn-like snout|
Credit: "Chelus fimbriatus close". Licensed under
CC BY-SA 3.0 via Wikimedia Commons
|Mata mata turtle at Toronto Zoo|
Credit: By Michael Gil from Toronto, ON, Canada
via Wikimedia Commons
|Credit: By Antonio Charneco (Own work)|
via Wikimedia Commons
|Photo by Tugrul Metin|
"Such a dolphin is a very rare occurrence - similar to the occurrence of conjoined human twins." said Gokoglu.