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the ancient armor of fish scales provide clues to hair feather development - Search

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the ancient armor of fish -- scales -- provide clues to hair, feather developmen




image: in this image of zebrafish scales, yellow marks the cells that produce bony material. magenta marks the bony material. view more credit: photo by andrew aman, david parichy, university of virginia, for the journal elife.when sea creatures first began crawling and slithering onto land about ...



ancient fish scales and vertebrate teeth share an embryonic origin




a high-magnification image of the skin of a shark, showing a broad covering of dermal denticles. credit: andrew gillis, gillis labin biology, one long-running debate has teeth: whether ancient fish scales moved into the mouth with the origin of jaws, or if the tooth had its own evolutionary inceptio...



scale-eating fish adopt clever parasitic methods to survive




ct-scanned image of the piranha catoprion mento. the blue dyed segments inside the skeleton are fish scales eaten by the piranha (also shown enlarged next to the fish). credit: university of washingtonthink of them as extra-large parasites. a small group of fishes—possibly the world's cleverest ca...



hair strands could reveal lifestyle secrets of criminals




emerging hair analysis techniques could help reveal vital lifestyle information about crime suspects. credit: glen p. jackson, ph.d.hair fiber analysis, a forensic crime tool with a questionable past, could soon have a brighter future thanks to the development of a more refined scientific technique ...



ancient southern china fish may have evolved prior to the 'age of fish'




life restoration of sparalepis tingi (foreground) and other fauna from the kuanti formation. credit: brian chooan ancient fish species with unusual scales and teeth from the kuanti formation in southern china may have evolved prior to the "age of fish", according to a study published march 8, 2017 i...



ancient tooth shows mesolithic ancestors were fish and plant eaters




image: the mesolithic tooth had evidence of fish scales and fish tissue. view more credit: sapienza university of romeprevious analysis of mesolithic skeletal remains in this region has suggested a more varied medittaranrrean diet consisting of terrestrial, freshwater and marine food resources, no...



the blind fish that should have diabetes, but somehow doesn't




its ability to cope with wildly fluctuating blood-sugar levels might provide clues to improving human health.



hair strands could reveal lifestyle secrets of criminals (video)




image: emerging hair analysis techniques could help reveal vital lifestyle information about crime suspects. view more credit: glen p. jackson, ph.d.san francisco, april 4, 2017 -- hair fiber analysis, a forensic crime tool with a questionable past, could soon have a brighter future thanks to the d...



genes' interplay gives clues to how new cell types could evolve




loss of sox10 and sox5 genes results in complex changes in numbers of shiny leucophores in medaka fish. upper fish shows a normal, wild-type medaka -- note the line of shiny leucophores along the midline. all other fish lack all function of sox5 gene, but the bottom three show loss of increasing num...



tiny scales could serve as safe material in implants to reinforce bones and join




scales are the material of choice for animals from pangolins to fish: they're customizable, water-friendly, strong but flexible, and easy to fix when damaged.



exploring environmental and technological effects on culture evolution at differ




image: this is a special topic: past human-environmental interaction. view more credit: ©science china pressmany famous ancient civilizations such as ancient egypt, mesopotamia, maya, angkor, han and tang dynasties in ancient china, had emerged and flourished in different parts of the world, whil...



musical scales may have developed to accommodate vocal limitations




buffalo, n.y. - for singers and their audiences, being "in tune" might not be as important as we think. the fact that singers fail to consistently hit the right notes may have implications for the development of musical scales as well. at issue is not whether singers hit the right or wrong note, but...



butterflies, moths have been on earth for at least 200 million years: study




newly discovered fossils show that moths and butterflies have been on the planet for at least 200 million years. scientists found fossilised butterfly scales the size of a speck of dust inside ancient rock from germany. the find pushes back the date for the origins of the lepidoptera, one of the mos...



mars study yields clues to possible cradle of life




the discovery of evidence for ancient sea-floor hydrothermal deposits on mars identifies an area on the planet that may offer clues about the origin of life on earth.



fish database could help eliminate the ultimate bait and switch




fish fraud, the misrepresentation of cheaper fish as more expensive ones, is a rampant problem worldwide. now in a study appearing acs' journal of agricultural and food chemistry, scientists report that they are making strides toward the development of a protein database capable of definitively iden...



scientists piece together weird ancient fish with platypus-like bill




palaeontologists have reconstructed an ancient australian fish that swam on the sea floor like a stingray and had a long bill similar to a platypus.fossils that date back 400 million years have allowed scientists to piece together a revealing picture of the strange fish, which had nostrils coming fr...



gender roles in ancient times




two new studies by osaka university researchers provide insights on why male and female bodies of the same species differ. the studies show factors that regulate the expression of doublesex1, a gene responsible for the growth of male traits in the ancient crustacean daphnia magna and the subsequent ...



there's a deeper fish in the sea




the ocean's deepest fish doesn't look like it could survive in harsh conditions thousands of feet below the surface. instead of giant teeth and a menacing frame, the fishes that roam in the deepest parts of the ocean are small, translucent, bereft of scales—and highly adept at living where few oth...



study of ancient fish suggests chicxulub asteroid strike warmed planet for 100,0




a small team of researchers from the u.s. and tunisia has found evidence that suggests a huge asteroid that struck the earth approximately 66 million years ago caused the planet to warm up for approximately 100,000 years. in their paper published in the journal science, the group describes their stu...



hilsa on a click: bengal's fish market goes online, starts home delivery




the traditional fish market is shifting to digital space with online order of fish and doorstep delivery slowly becoming the norm in the city. besides the west bengal government's 'smartfish' app for online shopping of fish, six engineering students from different premier institutions have launched ...



ancient trail of columbian mammoths uncovered in south-central oregon




a fossilized trackway on public lands in lake county, oregon, may reveal clues about the ancient family dynamics of columbian mammoths.



a little moringa oil can do wonders for your hair, skin and your nails




moringa oil is a valuable source of beauty from nature, and with a potent stash of antioxidants in it. this is why, moringa oil is known for its high value and stability; reason enough for the beauty industry to use the oil in most of its anti ageing products, creams, lotions, potions and other beau...



a little moringa oil can do wonders for your hair, skin and your nails




moringa oil is a valuable source of beauty from nature, and with a potent stash of antioxidants in it. this is why, moringa oil is known for its high value and stability; reason enough for the beauty industry to use the oil in most of its anti ageing products, creams, lotions, potions and other beau...



8 moringa oil that can do wonders for your hair, skin and your nails




moringa oil is a valuable source of beauty from nature, and with a potent stash of antioxidants in it. this is why, moringa oil is known for its high value and stability; reason enough for the beauty industry to use the oil in most of its anti ageing products, creams, lotions, potions and other beau...



presstv-the armor of light




this edition of the doc review features the armor of light, a film directed by abigail disney and kathleen hughes.the armor of light follows the journey of an evangelical minister trying to find the courage to preach about the growing toll of gun violence in america.