SAN FRANCISCO (April 30, 2019) - Scientists are analyzing a rare snapshot in time of urban plants and animals. To better understand whether rapidly growing cities are hosting the same species, a concept is known as urban homogenization, a team from the California Academy of Sciences analyzed an immense volume of data gathered by citizen scientists during the four-day global City Nature Challenge.
Scientists from around the world have joined together to identify the most important actions needed by Madagascar's new government to prevent species and habitats being lost forever.
Setting off a startling chain of events, a parasitoid wasp can force a spider to weave a special web to suspend the wasp pupa just before it finishes killing its spider host. William Eberhard, staff scientist emeritus at the Smithsonian Tropical Research Institute and Marcelo Gonzaga at the Universidade Federal de Uberlândia in Brazil have assembled wide-ranging evidence that 'zombification' involves hacking existing web-spinning mechanisms by hijacking the spider's own molting hormone, ecdysone.
For scores of wild bee species, females and males visit very different flowers for food - a discovery that could be important for conservation efforts, according to Rutgers-led research.
Songbirds that pack on as much as 50 percent of their body weight before migrating and that sleep very little, exhibit altered immune system and tissue-repair function during the journey, which may hold implications for human health, according to Penn State researchers.
New Haven, Conn. - The crab family just got a bunch of new cousins -- including a 95-million-year-old chimera species that will force scientists to rethink the definition of a crab.
Ithaca, NY--There appears to be an underlying selection mechanism at work among Gouldian Finches--a mechanism that allows this species to produce and maintain individuals with red heads, black heads, and yellow heads.
If you've ever spent some time in the Caribbean, you might have noticed that humans are not the only organisms soaking up the sun. Anoles - diminutive little tree lizards - spend much of their day shuttling in and out of the shade
Sometimes, it's really easy for scientists to tell species of animals apart--they'll be obviously different shapes or colors. Other times, different species will look nearly identical to the naked eye. In those cases, scientists need to turn to techniques like DNA analysis to tell them apart. Or, like researchers at the Field Museum discovered when studying some near-identical millipedes, you can sometimes just shine a black light on them, and under the ultraviolet light, parts of the different species' genitals will glow different colors.
Galapagos giant tortoises, sometimes called Gardeners of the Galapagos, are creatures of habit. In the cool dry season, the highlands of the volcano slopes are engulfed in cloud which allows the vegetation to grow despite the lack of rain. On the lower slopes, however, there is no thick fog layer, and vegetation is not available year round. Adult tortoises thus spend the dry season in the higher regions, and trek back to the lower, relatively warmer zones where there is abundant, nutritious vegetation when the rainy season begins.
ATHENS, Ohio (April 18, 2019) - Paleontologists at Ohio University have discovered a new species of meat-eating mammal larger than any big cat stalking the world today. Larger than a polar bear, with a skull as large as that of a rhinoceros and enormous piercing canine teeth, this massive carnivore would have been an intimidating part of the eastern African ecosystems occupied by early apes and monkeys.
Translucent jellyfish, colorful corals and waving sea anemones have very different bodies but all fall on the same big branch in the animal family tree. Jellyfish actually start out anchored to the sea floor, just like corals and anemones. Researchers at the Okinawa Institute of Science and Technology Graduate University (OIST) recently uncovered which genes allow jellyfish to graduate from this stationary stage and swim off into the sea.
Knowledge may help fine-tune conservation messages
Bobcats, coyotes, foxes seek green spaces in the suburbs