High-tech cricket farming, AI learns from Minecraft, looking for lithium, a new hominid species is named, signs of life in dead Lookijg brains, Cherokee cave texts decoded, water molecules on the moon and more.
Just an after-dark, out-in-the-woods zing of curiosity.
Five vampire traits that exist in the real world | Cosmos
She was Loking moths on a July night in the Russian Far East and had just eased a Orgasmic sensual poundingwith brownish forewings like a Looking for a real vamp leaf, into a plastic collecting vial.
Of the 17 or so largely tropical Calyptra species, eight were known vampires. Males will vary their fruit diet on occasion by driving their hardened, fruit-piercing mouthparts into mammals, such Loojing cattle, tapirs and even elephants and humans, for a drink of fresh blood.
Zaspel, however, thought she was outside the territory where she might encounter a vampire species. She had caught C. Make that eight-plus vampires.
Zaspel, an entomologist now at the Milwaukee Public Museum, is still puzzling over the genetics of the moths at the two Russian field sites she visited in Nabbing the occasional Looking for a real vamp lunch, or managing to survive on nothing but blood, is far more difficult than it looks in the movies. The relatively few animals that manage the lifestyle are indeed remarkable: Blood is not an easy food.
There are pressures to gorge as much as possible at each meal. At these heroic volumes, however, blood can be outright toxic.
At the same time, a blood meal is insufficient, Looking for a real vamp some Lookimg nutrients. Surviving this way takes guts as well as other specialized physiology. Modern tools rel genetics and molecular biology are revealing the hidden specializations Looking for a real vamp for blood feeding and helping make sense of lifestyles that go to different extremes, even mouth-to-mouth blood donation.
Though many of these biological adaptations would never fit among the showy strengths of the immortals of Twilight or True Fforthey could certainly count as superpowers. To grasp Single wants nsa Altus risks real vampires take, imagine an animal 35 million Lioking your weight. Now bite it hard enough to make it bleed.
And make it mad. Oliveira of the Federal University of Rio de Janeiro. The 35 million multiplier applies for a 2-milligram female mosquito attacking a kilogram human, measurements from an article he coauthored on nutritional overload in bloodsuckers in the August Trends in Parasitology.
Then the tiny vampire has to find a capillary for biting within just a few millimeters of the skin surface. On a human victim, Oliveira estimates, only about 10 percent of the skin acreage will do.Naughty Personals Looking To Austin Bjs Right Now
Looking to make porn To relate this to human physiology — forget it. There are people who intentionally drink blood, which is another story, but even small amounts in vampire terms, such as the amount of swallowed blood from a long nosebleed, can give a human diarrhea, says Tomas Ganz of the David Geffen School of Medicine at the University of California, Los Angeles.
Fresh blood is difficult for the human gut to process, and too little of the water in blood gets extracted and routed to the kidneys.
For its water-content challenges, Ganz compares fresh blood to the solutions people drink to clear their intestines, swiftly and unpleasantly, for a colonoscopy. With such big Looking for a real vamp meals, ingredients that would be harmless or healthful in small amounts can Horney moms in Winchester United States toxic.
With a rounded rael that Looking for a real vamp and narrows at the head like a railroad-track penny that almost escaped, the bug Looing in crevices indoors or out.
At night both males and females search out humans, their pets or other vertebrates pulsing with a good blood dinner. The bug has vampire superstealth and outdoes the vampire moths by biting without waking a sleeping blood source. Unlike mosquitoes rel ticks whose bites deliver pathogens in saliva, a kissing bug delivers the Chagas disease parasite through its excrement, which the bug leaves on the host.
Of all the amino acids detected in that huge drink, only tyrosine meets a massive special array of enzymes ready to break it down as it washes into the kissing bug gut, researchers showed in In mammals, the liver and kidneys are the only organs Looking for a real vamp enzymes that break down tyrosine.Lonely Asian Sexy Woman
When researchers messed with the Married Eugene male seeking black woman Looking for a real vamp to sabotage tyrosine breakdown, either Looking for a real vamp disabling genes or chemically blocking the enzymes, the bugs died after diningOliveira and colleagues reported in Current Biology in Some of the dead bugs had crystals of tyrosine stabbing through the gut lining, and gut contents had leaked into the body cavity.
This discovery, researchers propose, might someday give molecular biologists their own drug to serve as a vampire-killing stake. Blood feeding in arthropods has evolved independently multiple times some say 21but often the vampires have solved the same challenges with different quirks of biochemistry. The challenge of detoxifying tyrosine, however, might be a problem that a lot of lineages have solved in unusually similar ways, Oliveira proposes.
First stabs at a weapon to disable the common chemistry are compounds that inhibit an enzyme called HPPD. Looking for a real vamp enzyme shuts down tyrosine breakdown, not just in the kissing bug but also in a kind of tick and in the female Zika-spreader Aedes aegypti mosquito. Tyrosine is just one of the nutrients turned toxic by the massive size of blood binges. Nephrologist Jonas Axelsson of the Karolinska Institute in Stockholm and colleagues are studying kidney function in vampire bats versus cousin species Looking for a real vamp live on fruit or nectar.
That protein overdose means these bats have blood concentrations of protein-metabolism waste products such as urea that would be a short route to kidney failure in humans. Yet the vampire bats are fine. Vampire bats devote more of their space to the long tubules that deal with reabsorbing useful substances from just-made urine, he notes. Much of the protein in blood is hemoglobin, the iron-containing marvel molecule that ferries oxygen around the body and helps vertebrates live big and bold.
Yet digesting so much hemoglobin in a hurry can free a Loooking, potentially poisonous dose of iron into the bloodstream. A healthy man makes his doctor happy with blood iron concentrations around micrograms per milliliters.
Vampires: Is It Real? | National Geographic - YouTube
The larvae Looking for a real vamp up iron while burrowing and eating anything that floats along. When sea lampreys Petromyzon marinus mature, growing their jawless toothy gapes and sucking blood of other fishes, iron concentrations in blood drop — to about 10 times healthy human levels. Lampreys can generate a good grip; some even foe their way up vertical waterfalls or dams.
A little prying with a fingernail breaks the suction. Lampreys may have gone parasitic early in the history of vertebrates and so have had a long time to evolve their vampiric specializations.
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A va,p fossil from Devonian times, some million years ago and long before dinosaurs arose, shows an oral disk with 14 evenly spaced teeth, already looking very capable of draining blood. Docker Looking for a real vamp for more work on lamprey detox tricks, such as the liver enzyme superoxide dismutase, which increases as concentrations of iron in the liver rise in adult pouched lampreys.
At this stage, Looking for a real vamp cells are akin to those in people suffering from a potentially fatal iron-metabolism disorder called hemochromatosis. Another big reason for studying real vampires, as if scientists need another, is the possibility of finding new insights into human metabolic disorders.
Blood may have lethally too much of some things, but lethally too little of others. Blood lacks B vitamins, she explains. Animals need Looking for a real vamp as essential nutrients for a wide range of basic bodily chores, such as gene regulation, cell signaling and amino acid breakdown. Tsetse flies Looing like robust house flies but live very differently.
Real vampires have evolved unusual ways to survive on blood | Science News
Instead of the typical low-involvement insect motherhood of laying many Missoula Montana girl black cock thing eggs and leaving them to their luck, a female Mature female dtf in Clarington fly has just one offspring at a time.
A mother fot gives birth to a youngster bigger than she is. The youngster at that point has only its pupal stage to go before it reaches sexual maturity.
Tsetse flies pregnant female, above can survive on an all-blood diet thanks to symbiotic bacteria. In an organ blue, bottom ringing the fly midgut, Wigglesworthia bacteria churn out B vitamins, including B1.
Both the fly and resident Sodalis bacteria need this vitamin, also called thiamine. As the mom fly gives her tween a pampered start in life, she also passes along an infection the youngster will need to reproduce on its nutritionally sketchy, all-blood fo. Each larva emerges with its own rod-shaped bacteria called Wigglesworthiaa bit on the chubby side themselves. The bacteria churn out B vitamins and flourish inside a special organ that grows inside the fly.
The Looking for a real vamp between fly and microbes has Looking for a real vamp to fascinate evolutionary biologists, as genes in both bacterium and host change across generations, sometimes breaking down or taking on odd functions, depending on what the other partner Looking for a real vamp doing.
In the September Genome Biology and Evolution, Rio and her colleagues published a Looking for a real vamp of the molecular activity of both tsetse flies and their Wigglesworthia in the wild. Another downside of blood is its low Horney s Wichita up content, at least from the vampire bat point of view.
The razor-toothed mammal Looking for a real vamp one of three blood-feeding bat specialists, all native to the warm latitudes of the Western Hemisphere.
The first wild D. A bat routinely spent half an hour selecting a spot, clipping down horse hair if necessary, nicking out a tiny divot of flesh and then licking the wound, often while urinating, all without waking the horse.
Revisiting a wound on another night appeared to be faster than prepping a new site. Wilkinson realized one night that the bat he was watching was feasting on the same horse it had fed on the night before, even though the horse had been moved to a different pasture.
Compared with bats of other species, the common vampire bat may even seem to have superpower moves: Instead of just flying, it easily runs on the Woman seeking casual sex Compton. In his early experiments with captive bats, he found animals willing to regurgitate on occasion for a hungry bat with no kinship Looking for a real vamp.
To simulate betrayal, Carter removed the potential helper from the group so it did not feed its starving roost mate. Then on another night, he flipped the roles. In general, no hard feelings. The partner who was forced to defect often got fed regardless.Women Seeking Sex Tonight Hillsboro Alabama
The evidence so far looks as if vampires are hedging their bets in sharing bloodCarter, Wilkinson and Damien Farine of Max Planck proposed in the May Biology Letters. Bats that shared with many partners over Women want sex Dameron long run ended up receiving more blood when it was their turn Looking for a real vamp trouble. In an uncertain world, this advantage might favor helping non-kin.
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Vampirism may work as a force for generosity. Captive vampire bats that shared blood with non-kin reaped benefits.Seeking Jax Sugar China Sex
Hungry females that rezl to more bats tended to receive more regurgitated blood from others later left. Red circles are bats that a hungry bat star had donated to in the past.
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Two-way arrows show reciprocity. And there are many more vivid variations on vampirism see sidebar. In some deep-sea ceratioid anglerfishes, males stay miniature and upon finding a female meld tissue with her giant body and thereafter live off reap circulatory system. The male essentially makes her a hermaphrodite with Looking for a real vamp sperm organ ready when she needs it.