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Tag: "black" at biology news

Fish can determine their social rank by observation alone, study finds

...y to spot the winner. Mature males have a menacing black stripe, or eyebar, on their face. After a fight, the winner retains his showy appearance, but the loser's eyebar temporarily disappears as he tries to flee his more aggressive opponent. To test for transitive inference, the Stanford team took adv...

Cracking open the black box of autoimmune disease

...t on a strictly molecular level, autoimmunity is a black box," says Young. "When we discover the molecular mechanisms that drive these conditions, we can migrate from treating symptoms to developing treatments for the disease itself."...

FDA causes unnecessary scare about common painkillers

... use. Instead, it required only a "vaguely worded" black box warning, said Furberg. European countries require clear warnings for patients at high risk of heart attacks and have said COX-2 inhibitors should not be taken by patients with heart disease. With the non-selective NSAIDs, Europe has given a "c...

Deep in the ocean, a clam that acts like a plant

How does life survive in the black depths of the ocean? At the surface, sunlight allows green plants to "fix" carbon from the air to build their bodies. Around hydrothermal vents deep in the ocean live communities of giant clams with no gut and no functional digestive system, dependin...

Recently discovered species gain protection

...any other rare and restricted birds, including the black tinamou (known from one other site in southern Colombia, and one in central Peru), sharpbill, Stiles' tapaculo, Parker's antbird, semi-collared hawk, red-bellied grackle, multicolored tanager, black-and-gold tanager, and a wintering population of the...

Long-lived deep-sea fishes imperiled by technology, overfishing

...ff the Pacific Northwest, sablefish ?also known as black cod ?are another depleted species. Deep-sea fishes grow slowly because of limited food sources and slower metabolisms and many don't reach sexual maturity for 30 to 40 years, Heppell said. The harvest of older fish may have an even greater impact on...

Stopping plants from getting sick

...ens with an unusual name that comes from the sooty black masses of spores that they form on infected plants...replacing it with their own spores and causing the black masses of spores on wheat crops ?as he saw when he was a child. The fungi also sense lipids and phos...

Bats prey on nocturnally migrating songbirds

...ly, the newly uncovered danger comes from the deep black sky, in the form of a 45 cm wing-spanned aerial-hawking mammal, equipped with sharp canines and an efficient radar system which remains probably largely inaudible to songbirds. In 2001, Carlos Ibáñez and his colleagues at the Doñana Biological St...

A case of mistaken identity for the ivory-billed woodpecker?

...pecker Dryocopus pileatus, a superficially similar black and white species. The Pileated Woodpecker's wings...ond captured on Luneau's video, and its wings have black trailing edges. The trailing edges of the Ivory-billed Woodpecker's wings are white. Aberdeen-bas...

Tibetan antelope slowly recovering, WCS says

...fashionable in Europe and the U.S., which fueled a black market and widespread poaching in this remote area. In the mid 1990s, Schaller estimated that perhaps 75,000 chiru remained in the wild, with as many as 20,000 falling to poachers annually. However, no comprehensive census of chiru has ever taken p...

Cornell lab confirms deadly fish virus spreading to new species

...d positive by Cornell include bluegill, rock bass, black crappie, pumpkinseed, smallmouth and largemouth bass, muskellunge (New York’s No. 2 sport fish), northern pike, walleye, yellow perch, channel catfish, brown bullhead, white perch, white bass, emerald shiner, bluntnose minnow, freshwater drum, round ...

Implanting dopamine generators in brain cells obtains improvement in Parkinson's in monkeys

...rom the dopaminergic neurones is released from the black substance. As is known, Parkinson's disease is pro...as a result of the loss of 50% of the cells of the black substance (the brain stem structure) that manufactures dopamine and sends out projections to the str...

Corals -- More complex than you?

...f these diseases. "The coral immune system is a black box at present. How corals cope with the worldwide upsurge in diseases, and the extent to which they are affected by other stresses caused by human activity are important questions. The similarity of the coral and human innate immune repertoires impl...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

...teria and then encapsulate them in a dense coat of black pigment called melanin. The researchers found that Photorhabdus produces a special phenoloxidase inhibitor to protect itself against this particular defence. They identified the inhibitor as a small molecule called 1,3-dihydroxy-2-(isopropyl)-5...

Mice with a migraine show signs of brain damage

... of four migraine sufferers might involve floating black spots, flashing light, or some other visual changes. Nedergaard says those disturbances might actually be a visual sign that parts of the brain are short of oxygen. In the work described in Nature Neuroscience, Nedergaard studied a phenomenon know...

Researchers demonstrate way to control tree height

... methods are already available for sweet gum, elm, black locust and pines. The current successful modification with poplar could be just “the tip of the iceberg,” the researchers said in their report. Dwarf trees and crop plants created with traditional cross-breeding or horticultural techniques are alr...

Potato wart eyed as risk to potato production

...hat initially appear white, and then turn brown or black as they decay, rendering the potato tuber unrecognizable and inedible. There is a zero tolerance for the fungus that causes potato wart. As a result, this disease has been placed on the USDA’s "Select Agent List" of plant pathogens deemed to pose...

MU researchers to study the status of black bears in Missouri

...ty of Missouri-Columbia are studying the status of black bears in Missouri. Black bears were abundant in th...partment of Conservation to help manage Missouri’s black bear population. The researchers – Kaitlyn Faries, a senior biology and chemistry major, and Lori E...

Rising skin cancer rates are more likely to affect wealthy people, says 12-year review

...s than one per cent of the population belongs to a black or minority ethnic group” adds co-author Dr Olivia Dolan, consultant dermatologist at the Royal Victoria Hospital. “This means that our results are less likely to be affected by different skin tones and ethnic origin than research carried out in c...

Caribbean frogs started with a single, ancient voyage on a raft from South America

...composite of many types of animals." Yellow and black spotted frog from caves in Haiti. Eleutherodactylus counouspeus . The field work for the study required nearly three decades to complete because many of the species are restricted to remote and isolated mountain tops or other inaccessible are...

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