Without being aware of it, people sometimes wrongly perceive tactile sensations. A new study in the scientific journal Current Biology shows how healthy people can sometimes misattribute touch to the wrong side of their body, or even to a completely wrong part of the body. The study was conducted by researchers at Bielefeld University's Cluster of Excellence CITEC, the University of Hamburg, and New York University.
The Deianiraeaceae, which has become the fourth family in the order Rickettsiales, currently contains one genus, Deianiraea. All previously investigated Rickettsiales are obligate intracellular specialised parasites. By contrast, Deianiraea not only attacks the victim from the outside, but also it never enters the host cell throughout its entire life cycle. Deianiraeacolonises the extracellular surface of the ciliate Paramecium: the predatory bacterium attacks the ciliate and replicates on its surface, taking the victim's resources, and eventually its life.
Many of an organism's traits are influenced by cues from the organism's environment. These features are known as phenotypically plastic traits and are important in allowing an organism to cope with unpredictable environments.
A new video shows how climate change connected and disconnected Andean "sky islands" during the past million years. The innovative mathematical model used to make the video was based on fossil pollen records and shows how the entire páramo habitat shifted. The model can predict climate change effects in mountainous regions around the world, according to an international team of scientists including authors from the Smithsonian Tropical Research Institute in Panama (STRI).
Leishmania - single-celled parasites that cause infections of the skin and internal organs - have long been known to multiply asexually, like bacteria. But occasionally, researchers have found hybrid parasites that carry genetic material from more than one strain - or even more than one species - of Leishmania, suggesting that some kind of genetic mixing is going on.
Fossils of a giant new species from the long-extinct group of sea creatures called trilobites have been found on Kangaroo Island, South Australia.
Giant petrels will be "temporary" winners from the effects of climate change in the Antarctic region - but males and females will benefit in very different ways, a new study shows.
ST. LOUIS, MO, June 11, 2019 - Overdose from opiates has skyrocketed. According to the National Center for Health Statistics, on average, 130 Americans die every day from an opioid overdose.1 The high cost of antidotes such as NARCAN®prevents many first responders from having access to lifesaving antidotes when they need it most. 2 Researchers at the Donald Danforth Plant Science Center have identified a new method of producing these compounds using a microorganism discovered in a waste stream associated with the processing of opium poppy.
Governments have a wide variety of policy options at their disposal to respond to the growing threat of antimicrobial resistance, but many of these approaches have not been rigorously evaluated, according to a new study published this week in PLOS Medicine by Susan Rogers Van Katwyk of the University of Ottawa, Canada, and colleagues.
The tube anemone Isarachnanthus nocturnusis only 15 cm long but has the largest mitochondrial genome of any animal sequenced to date, with 80,923?base pairs. The human mitochondrial genome (mitogenome), for example, comprises 16,569 base pairs.
Smalleye stingrays are the largest marine stingrays on record, reaching disc widths of up to 222 cm, and yet almost nothing is known about them. Scientists from the Marine Megafauna Foundation have for the first time used photo IDs to study this elusive animal in southern Mozambique, one of the only locations where it is regularly seen in the wild. Their findings are published today in the journal PeerJ.
The ultimate guide to writing AQA A-level biology essay
The cooling of the Southern Ocean surrounding Antarctica, which began approximately 35 million years ago and gave rise to its present icy state, has for decades been considered a classic example of climate change triggering rapid adaptation.
A grape variety still used in wine production in France today can be traced back 900 years to just one ancestral plant, scientists have discovered.
Switchgrass is attractive as a potential bioenergy crop because it can grow for years without having to be replanted. Requiring less fertilizer than typical annual crops like corn, switchgrass can keep more nitrogen, phosphorus, and carbon in the soil and out of our air and waterways. But, unlike corn, breeding of switchgrass for optimal traits is still in its early stages.