2020. 3. 4. 03:42ㆍ카테고리 없음
We sometimes think of evolution as a thing of the past, but it continues today, especially as environmental pressures and animals to adapt to survive. Here, a few examples of animals evolving in real-time. The lizard with extra sticky feetThe native green lizards that occupy the lower branches and trunks of Florida’s trees got a rude awakening when their invasive cousins, the brown lizards, moved in. Faced with limited resources and double the competition, the green lizards: they abandoned the lower branches for the treetops. Up there, the limbs are thinner and smoother, so the green lizards’ bodies had to adapt to the environmental shift. To better cling to the smooth branches, their toepads grew bigger and their scales got stickier—in just 15 years and about 20 generations.
“The degree and quickness with which they evolved was surprising,' Yoel Stuart, a postdoctoral researcher in the College of Natural Sciences at The University of Texas at Austin and lead author of the study. 'If human height were evolving as fast as these lizards' toes, the height of an average American man would increase from about 5 foot 9 inches today to about 6 foot 4 inches within 20 generations.' The shrimp that lost its eyes.
In the process of evolutionary change, you either use it or you lose it—and this is certainly true for a group of cave-dwelling crustaceans. These crabs and shrimp live underground where there is no light, and the sense of sight doesn’t do much good. As a result, they’ve gone blind, relying on smell and touch to navigate the cavernous depths. When researchers compared the brains of these spelunkers to their land-dwelling relatives, they that not only are these creatures sightless, they’re actually losing the parts of their brains associated with vision.
Meanwhile, the areas that control touch and smell are getting bigger. 'It's a nice example of life conditions changing the neuroanatomy,' the study’s lead author, Dr. Martin Stegner, from the University of Rostock in Germany, the BBC. It’s taken about 200 million years for the brain changes to occur, which may not seem “rapid,” but as the Washington Post’s Rachel Feltman, it’s “a relatively short time, in the evolutionary scheme of things.” 3. The owls that are changing color.
Climate change is forcing many animals to adapt to survive. The in Finland is a good example. These creatures come in two colors, brown or pale grey. The cold white winters have traditionally favored the grey owls, which can hide from predators by blending into a snowy color scheme. But as the winters have become more mild over the last 50 years, researchers noticed a shift: grey owls are on the decline and the brown birds are thriving, better suited to blending into the bare brown branches of the forest. As more brown owls survive, more brown genes get passed down through generations. Until now, the researchers, “an evolutionary response to a quantified selection pressure driven by climate change has not been empirically demonstrated in a wild population.” 4.
The fish that’s migrating earlier. Climate change is also the driving force behind a recent behavioral shift in pink salmon. As water temperatures rise, the fish are migrating from the ocean to the river to spawn about two weeks earlier than they did 40 years ago. And this isn’t just a new behavior—it’s actually a change at the genetic level. Between the 1980s and 2011, the number of late-migrating salmon declined by 20 percent, according to Ryan Kovach, a population ecologist at the University of Alaska in Fairbanks. The change happened over just one or two generations, which organisms can adapt to climate change very quickly. “We show that there has been a genetic shift towards earlier migration timing through what appears to be natural selection against the late-migrating individuals in the population,” Kovach.
The bedbugs with super-strength. Bad news for anyone with a fear of mice: researchers have a house mouse with an immunity to Warfarin, a type of poison typically deployed to fight infestations. The super mice were discovered in Germany, where the lowly house mouse bred with its poison-resistant distant cousin the Algerian mouse.
Example The Evolution Of Man Zip Download
Best Examples Of Evolution
A hybrid mouse with a very useful genetic mutation that gives it a leg up over its rodent relatives. Usually hybrid animals can’t reproduce, but 'sometimes there is the occasional odd hybrid that has just about the right novel combination of genomes from two species that renders them, at least temporarily, superior over the pure species,' the study’s lead author Michael Kohn.
“We’ve caught evolution in the act.”All images courtesy of iStock unless otherwise noted. You may be able to resist poking around the Christmas tree until December 25, but your has different plans. The tree you spent hours decorating is nothing more than an oversized toy to the feline in your home. Fortunately, there are steps you can take to dissuade your pet from swatting away all your hard work.As reports, an elaborate skirt is the key to a cat-friendly tree.
Pictures Of Evolution Of Man
If a cat loves the soft, fluffy material beneath the tree, it may lose interest in the branches overhead. A different approach is to use the skirt as an opportunity to create an uninviting barrier between your cat and the tree. It's hard to mess with ornaments when they're hanging above a layer of tape laid out sticky-side up, or even a bed of pinecones if you want something that looks more natural.Some curious cats can't be deterred by a few obstacles in their way. For these cases, recommends using a safe cat repellent.
There are many smells cats can't stand, like bitter apple, citronella, potpourri, and even Vicks VapoRub. You can either spray pine cones or cotton balls with these scents and tuck them around the tree, or spray them directly onto the branches.
Your cat will suddenly be repulsed by the shiny new object in the living room, plus your tree will smell a little more festive—especially if it's fake.Even after taking these precautions, it helps to have a few more safeguards in place. Limiting ornaments to the top half of the tree where they'll be out of kitty's reach, and securing them with strings instead of wire hooks, means they're less likely to end up on the ground or in your pet's paws. Location is also crucial—setting up your tree right next to a sofa or another piece of furniture your cat likes to climb on is like inviting him to use it as a launchpad.If you're thinking of skipping the traditional tree altogether this year, here are some.h/t. Battling your way through the biting winds of winter just to get to your office or run a simple errand—even if you’re just dashing a few yards to and from your car—can make your body feel like it’s been through an actual battle. And while cold weather definitely justifies curling up on the couch under a for hours on end, sometimes a regular throw pillow just isn’t enough to soothe your stiff muscles.Smoko’s plush boo pillow from Urban Outfitters , however, just might do the trick.
Not only does it have a fleece exterior, it also vibrates: Just press the power button on the right arm, and the pillow will give you a subtle, relaxing massage to sink into while you binge-watch whatever television series your friends won’t stop talking about. PopSugar, it comes with three AA batteries, so you don’t have to worry about bundling back up for a last-minute trip to the convenience store after you realize the only batteries you have are in your TV remote.The smiling face on the front gives you the impression that you’re being hugged by the world’s cutest, coziest arboreal mammal. There’s also a handle on the top of the pillow, so you can easily relocate from the couch to your bed whenever you feel like it.In short, the sloth-themed pillow might make you actually look forward to hearing your local meteorologist drop the term “wintry mix” in the forecast. And, at $49, it’s an ideal gift for anyone on your list who loves sloths and/or enjoys indulging in sloth-like behavior.You can get one (or more) from Urban Outfitters —and, for the full effect, why not pair it with a nice ugly Christmas sweater? Here are our 11.h/t Mental Floss has affiliate relationships with certain retailers and may receive a small percentage of any sale. But we choose all products independently and only get commission on items you buy and don’t return, so we’re only happy if you’re happy.
Thanks for helping us pay the bills!
“Always gonna live like it’s my last day,” vows Elliot ' Gleave repeatedly on Come Taste the Rainbow, the opening track of his fourth album.And if this set is representative of said lifestyle, we must conclude that our hero will spend most of his final hours regretfully reflecting on his excessive drink and drug habits and settling scores against ex-partners. All to a banging stadium-rave-rock-grime-house-synth-techno-metal-pop sing-along soundtrack. What a way to go.You’d imagine Gleave would be a little more upbeat considering last year’s peaked at No.1 and spawned back-to-back chart-topping singles. But Perfect Replacement and Close Enemies are bitter ripostes to exes, while One Way Mirror makes the startling accusation, “You were frosty to me like I was Nixon”.Yet ultimately, to misquote Shakespeare in Example’s trademark not-quite-poetic manner, you might think the lad doth protest too much.
Such dark lyrical tropes have served him well in the past, and even the blokey-but-sensitive shtick of his lovably clunky, WTF rhymes are part of a well-honed musical formula.But credit where it’s due – he provides something for everyone. Different elements to pull out for umpteen different remixes?
Bits the girls can sing and the blokes can shout along to? Brooding rap section to keep it 'real'? Tick.A few beefy rock riffs? And -assisted grimey techno squawks?
Icy synth stabs and trancey beats for the ravers? Tick, tick, tick, and presumably, boom as the crowd goes wild. All that’s missing, strangely but mercifully, is a bit of grotesque Auto-Tune. With it, he’d fill up his 2012 pop bingo card with ease.Yet underneath it all, songs like Say Nothing, Queen of Your Dreams and the title track are curiously reminiscent not of his hip hop roots or vintage dance music, but soaring 80s soft rock, albeit spattered with a gob full of glottal stops. As such, how can it fail?“I need to make a fresh start,” he frets on Snakeskin. You’re doing just fine, and you know it.