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How scientists turned daddy longlegs into daddy shortlegs | Science

Aug. 3, 2021 , 4:49 PM If there’s one defining trait of daddy longlegs, it has to be their legs. Now, scientists have shortened the legs of one species and turned them into food-handling limbs by tweaking the arachnids’ DNA expression. To figure out which genes cause these spider relatives to develop long legs, researchers assembled the first draft genome of Phalangium opilio and looked at three genes that act as a blueprint for where various body parts should go. When they traced the activity of two of those genes, they found they were turned on in the legs of embryos under a microscope. Next, they used RNA interference a technique that reduces gene expression to knock them down in hundreds of developing

Alex viverosProceedings of the royal societyMinden picturesமீண்டேன் படங்கள்

Even seagrass affected by noise pollution says new study -- Science & Technology -- Sott net

Fri, 23 Jul 2021 00:13 UTC Seagrass may not have ears, but that doesn t stop noise pollution from causing serious damage to the plant s other structures. © Shane Gross/NPL/Minden Pictures Noise pollution affects the structures within seagrass that help the marine plant detect gravity and store energy.From the whirring propellers that power our ships, to the airguns we use to search for oil, we humans have created a cacophony in the ocean. For years, scientists have known that human-generated noise pollution can hurt marine animals, including whales, fishes, and scallops. However, the damaging effect of noise pollution is, apparently, not limited to animals with ears, or even animals at all.

Mediterranean seaOceans generalMichel andrAurora ricartMaine bigelow laboratory for ocean sciencesLaboratory of applied bioacousticsPolytechnic university of cataloniaMinden picturesApplied bioacousticsPolytechnic universityBigelow laboratoryOcean sciencesமத்திய தரைக்கடல் கடல்மைக்கேல் அன்றுமைனே பிஜேளா ஆய்வகம் க்கு கடல் அறிவியல்பாலிடெக்நிக் பல்கலைக்கழகம் ஆஃப் கட்டலோனியா

DNA pulled from thin air identifies nearby animals

DNA pulled from thin air identifies nearby animals
sciencemag.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sciencemag.org Daily Mail and Mail on Sunday newspapers.

United statesChristina lynggaardKristy deinerMatthew barnesKristine bohmannErik stokstadKevin elsbyElizabeth clareUniversity of copenhagenRutgers universityQueen mary university of londonTexas tech universityYork universityMinden picturesTexas techQueen mary university

Dark wings supercharge seabird flight

Dark wings supercharge seabird flight
sciencemag.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sciencemag.org Daily Mail and Mail on Sunday newspapers.

Mennatalla ibrahimMostafa hassanalianMatthew shawkeyMexico institute of miningGhent universityJournal of the royal society interfaceMinden picturesRoyal societyNew mexico instituteமெக்ஸிகோ நிறுவனம் ஆஃப் சுரங்ககெஂட் பல்கலைக்கழகம்இதழ் ஆஃப் தி அரச சமூகம் இடைமுகம்மீண்டேன் படங்கள்அரச சமூகம்புதியது மெக்ஸிகோ நிறுவனம்

Mongoose mothers help their colonies thrive—by forgetting which pups are theirs

Jun. 23, 2021 , 6:10 PM Pregnant mongooses in a colony all give birth on the same night, a phenomenon that makes it harder for mothers to know which pups are their own. But that confusion works in their favor and may even lead to a fairer distribution of scarce resources researchers report today in Nature Communications. Working with seven groups of mongooses in Uganda, scientists from the University of Exeter and the University of Roehampton manipulated the birth weights of pups by giving some, but not all, of the pregnant mongooses extra food. After giving birth, the well-fed mothers doted on the smaller pups born to the underfed mongooses by feeding, carrying, protecting, and grooming them more often than their own, larger pups.

Mennatalla ibrahimHermann brehm mindenNature communicationsUniversity of exeterUniversity of roehamptonMinden picturesMichael cantஇயற்கை தகவல்தொடர்புகள்பல்கலைக்கழகம் ஆஃப் எக்ஸெடர்பல்கலைக்கழகம் ஆஃப் ரோஹாம்ப்டன்மீண்டேன் படங்கள்மைக்கேல் முடியாது