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390-million-year-old scorpion fossil -- biggest bug known
The gigantic fossil claw of an 390 million-year-old sea scorpion, recently found in Germany, shows that ancient arthropods - spiders, insects, crabs and the like - were surprisingly larger than their modern-day counterparts. view more (2007-11-26)
New 150 Million-Year-Old Crab Species Discovered
Researchers from Kent State University and the University of Bucharest, Romania, have discovered a new primitive crab species Cycloprosopon dobrogea in eastern Romania. Previously unexamined, these ancient crabs from the Prosopidae family existed more than 150 million years ago during the Jurassic period. view more (2007-10-18)
How does one sex grow larger than the other?
Why are males larger than females in some animal species (such as most mammals), females larger than males in others (such as most insects), and why are the sexes alike in yet other species (such as several birds)? view more (2007-01-30)
Origin of claws seen in 390-million-year-old fossil
A missing link in the evolution of the front claw of living scorpions and horseshoe crabs was identified with the discovery of a 390 million-year-old fossil by researchers at Yale and the University of Bonn, Germany. view more (2009-02-06)
Steep oxygen decline halted first land colonization by Earth's sea creatures
Vertebrate creatures first began moving from the world's oceans to land about 415 million years ago, then all but disappeared by 360 million years ago. view more (2006-10-24)
A Natural, Alternative Insect Repellent to Deet
Isolongifolenone, a natural compound found in the Tauroniro tree (Humiria balsamifera) of South America, has been found to effectively deter biting of mosquitoes and to repel ticks, both of which are known spreaders of diseases such as malaria, West Nile virus, and Lyme disease. view more (2009-02-06)
Birds migrate together at night in dispersed flocks, new study indicates
A new analysis indicates that birds don't fly alone when migrating at night. Some birds, at least, keep together on their migratory journeys, flying in tandem even when they are 200 meters or more apart. view more (2008-07-08)
Gene may 'bypass' disease-linked mitochondrial defects, fly study suggests
By lending them a gene normally reserved for other classes of animals, researchers have shown they can rescue flies from their Parkinson's-like symptoms, including movement defects and excess free radicals produced in power-generating cellular components called mitochondria. view more (2009-05-06)
Coding for arthropods-what's so special about insects and spiders?
The central dogma of molecular biology is that DNA makes RNA makes protein. This relies on a specific underlying code which relates given triplets of RNA nucleotides into specific amino acids. view more (2006-04-25)
K-State researchers study gene regulation in insects
Susan Brown, an associate professor of biology at Kansas State University, is interested in how evolution generates so much diversity in insects shapes and forms. view more (2006-04-28)
Chickadee, nutchatch presence in conifers increases tree growth, says CU-Boulder study
Chickadees, nuthatches and warblers foraging their way through forests have been shown to spur the growth of pine trees in the West by as much as one-third, according to a new University of Colorado at Boulder study. view more (2007-08-02)
Fossilised Embryos - 500 Million Years Old
Evidence from fossilised embryos of worm-like creatures that lived 500 million years ago shows that embryos developed then in much the same way as their living relatives do today. The implications of this remarkable discovery, reported in this week's issue of Nature, is that embryological processes that occur today must have been established very... view more... (2004-01-12)
Optical brighteners for bioinsecticides
Optical brighteners are a valuable component for bioinsecticide formulae based on baculovirus. These substances enhance their insecticidal capacity at the same time as they do not favour the development of resistance of the insects to these viruses, nor do they increase the probability that the insect might develop sublethal infections, rather... view more... (2004-09-06)
Fish researcher demonstrates first 'non-visual feeding' by African cichlids
Most fish rely primarily on their vision to find prey to feed upon, but a University of Rhode Island biologist and her colleagues have demonstrated that a group of African cichlids feeds by using its lateral line sensory system to detect minute vibrations made by prey hidden in the sediments. view more (2009-04-14)
Researchers to study rebirth of an island after volcanic eruption
When Alaska's Kasatochi Volcano erupted on Aug. 7, 2008, it virtually sterilized Kasatochi Island, covering the small Aleutian island with a layer of ash and other volcanic material several meters thick. view more (2009-08-07)
Ancient predator had strongest bite of any fish, rivaling bite of large alligators and T. rex
t could bite a shark in two. It might have been the first "king of the beasts." And it could teach scientists a lot about humans, because it is in the sister group of all jawed vertebrates. view more (2006-11-29)
Nanometric butterfly wings created
A team of researchers from the State University of Pennsylvania (USA) and the Universidad Autónoma de Madrid (UAM) have developed a technique to replicate biological structures, such as butterfly wings, on a nano scale. The resulting biomaterial could be used to make optically active structures, such as optical diffusers for solar panels. view more (2009-10-09)
New study rewrites evolutionary history of vespid wasps
Scientists at the University of Illinois have conducted a genetic analysis of vespid wasps that revises the vespid family tree and challenges long-held views about how the wasps' social behaviors evolved. In the study, published in the Feb. 21 Proceedings of the National Academy of Sciences, the researchers found genetic evidence that eusociality... view more... (2007-03-02)
Researchers examine role of climate change in disease spread
Ever since scientists first proposed that our planet might be experiencing widespread climate change, concerns have been raised about its implications for the spread of arboviruses - viruses carried by arthropods such as mosquitoes, midges and ticks. view more (2009-02-06)
Molecular structure could help explain albinism, melanoma
Arthropods and mollusks are Nature's true bluebloods - thanks to hemocyanin, an oxygen-carrying large protein complex, which can even be turned into the enzymatically active chemical phenoloxidase. view more (2009-05-13)
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