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  • A mating war in diving beetles has stopped the evolution of species
    on March 20, 2019 at 4:05 pm

    In nature, males eager attempts to mate with females can be so extreme that they will harm females. Such negative impact of mating interactions has been suggested to promote the emergence of new species under some circumstances. Surprisingly, one type of diving beetle species now show that this conflict between the sexes can instead lead to an evolutionary standstill in which mating enhancing traits in males and counter-adaptations in females prevent the formation of new species. […]

  • What makes evolution go backwards?
    on March 19, 2019 at 6:23 pm

    The study of evolution is revealing new complexities, showing how the traits most beneficial to the fitness of individual plants and animals are not always the ones we see in nature. Instead, new research by behavioral scientists shows that in certain cases evolution works in the opposite direction, reversing individual improvements to benefit related members of the same group. […]

  • Tiny song bird makes record migration
    on March 19, 2019 at 4:18 pm

    The bird's trek between its breeding grounds in the central and western boreal forest of North America and its winter home in the Amazon Basin is one of the longest songbird migrations recorded. Describing a route arcing across North America and including a transoceanic flight to South America, the study confirms an epic migration journey that scientists had long suspected but not yet proved. Tracking their route is key to solving the birds' decline. […]

  • Bartonella and sudden-onset adolescent schizophrenia
    on March 18, 2019 at 9:02 pm

    In a new case study, researchers describe an adolescent human patient diagnosed with rapid onset schizophrenia who was found instead to have a Bartonella henselae infection (associated with cat scratch fever). […]

  • Alligator study reveals insight into dinosaur hearing
    on March 18, 2019 at 5:26 pm

    A new study of American alligators found that the reptiles form neural maps of sound in the same way birds do. […]

  • World's oldest semen still viable
    on March 17, 2019 at 7:04 pm

    Ram semen stored for 50 years has been used to successfully impregnate 34 ewes, with fertility rates as high as recently stored semen. […]

  • In this nematode species males are needed for reproduction but not their genes
    on March 14, 2019 at 7:17 pm

    In the Mesorhabditis belari roundworm, the sole purpose of males is to help females produce clones of themselves. […]

  • Study uncovers genetic switches that control process of whole-body regeneration
    on March 14, 2019 at 7:15 pm

    Researchers are shedding new light on how animals perform whole-body regeneration, and uncovered a number of DNA switches that appear to control genes used in the process. […]

  • Bacteria may help frogs attract mates
    on March 14, 2019 at 4:31 pm

    The role played by symbiotic microorganisms isolated from the skin of anurans has been discovered by researchers in Brazil. […]

  • Wild African ape reactions to novel camera traps
    on March 14, 2019 at 3:10 pm

    An international team of researchers analyzed video from remote camera-trap devices placed in ape-populated forests throughout Africa to see how wild apes would react to these unfamiliar objects. Responses varied by species, and even among individuals within the same species, but one thing was consistent throughout: the apes definitely noticed the cameras. […]

  • As uniform as cloned soldiers, new spiders were named after the Stormtroopers in Star Wars
    on March 14, 2019 at 3:10 pm

    Despite being widely distributed across north and central South America, the small family of similarly looking bald-legged spiders had never been confirmed in Colombia. However, a new research paper describes a total of six previously unknown species inhabiting the country, with four of them belonging to a new genus named Stormtropis -- after the clone trooper army in the famous Star Wars franchise. […]

  • Unprecedented number of warm-water species moved northward during marine heatwave
    on March 12, 2019 at 11:59 am

    A new study documents an unprecedented number of southern marine species moving northward into California and as far north as Oregon during the 2014-2016 marine heatwave. Of 67 rare, warm-water species sightings observed, 37 had never been documented so far north before. […]

  • When coyote parents get used to humans, their offspring become bolder, too
    on March 11, 2019 at 9:31 pm

    When coyote parents are habituated to humans, their offspring are more habituated, too -- potentially leading to negative interactions between coyotes and humans. […]

  • For hyenas, there's no 'I' in clan
    on March 11, 2019 at 9:31 pm

    When it comes to advancing social status, it's not what you know, it's who you know -- for humans and spotted hyenas alike. […]

  • Teenage T. rex was already chomping on prey
    on March 11, 2019 at 6:13 pm

    New research indicates that even as a teenager the Tyrannosaurus rex showed signs that it would grow up to be a ferocious predator. Scientists reported evidence that a juvenile T. rex fed on a large plant-eating dinosaur, even though it lacked the bone-crushing abilities it would develop as an adult. […]

  • What's for dinner? Sushi, with a side of crickets
    on March 11, 2019 at 2:12 pm

    While insects have been consumed for centuries worldwide, many people still haven't warmed to the idea of a creepy-crawly on the tongue. […]

  • New wallaby-sized dinosaur from the ancient Australian-Antarctic rift valley
    on March 11, 2019 at 12:19 pm

    A new, wallaby-sized herbivorous dinosaur has been identified from five fossilized upper jaws in 125-million-year-old rocks from the Cretaceous period of Victoria, southeastern Australia. […]

  • Mathematics of sea slug movement points to future robots
    on March 7, 2019 at 9:19 pm

    Mathematicians recently discovered a lot of new, powerful geometries involved in frilly surfaces. They developed the mathematics to describe these surfaces -- inflected nonsmooth surfaces, which change the direction in which they bend -- and the combination of new geometry insights and age-old slugs might just be the right combination for a new generation of flexible, energy-efficient soft-bodied robots. […]

  • Scientists find mystery killer whales off Cape Horn, Chile
    on March 7, 2019 at 6:15 pm

    In January 2019, scientists working off the tip of southern Chile got their first live look at what might be a new species of killer whale. Genetic samples will help determine whether this animal, with its distinctly different color pattern and body shape, is indeed new to science. […]

  • Swifts are born to eat and sleep in the air
    on March 6, 2019 at 4:06 pm

    Nearly 100 species of swift are completely adapted to life in the air. That is the conclusion of researchers after having studied a third species and observing that some individuals did not land for over three months. […]

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