Tag: "ate" at biology news

In mice, drug protects against diabetes and atherosclerosis

...ived the inhibitor drug. A second group of animals ate the western diet for eight weeks, at which time they developed severe atherosclerosis. Then they were started on the drug to determine whether the drug could halt or reverse the disease process. In both experiments, the drug treatment reduced the ...

Marine phytoplankton changes form to protect itself from different predators

...ther this response affected how much the predators ate to determine if the change conferred a survival advantage. “We found that these organisms were making the right choice,” Hay said. “They were shifting to the shape that made them largely immune to whichever predator was attacking, and this shift ...

Parasites' impact goes beyond host to affect ecosystem

...yers?hypothesis: snails infected with the parasite ate 40 percent less macroalgae than uninfected snails. In the field, where researchers measured the macroalgae in three types of bottomless cages -- with no snails (control), uninfected snails, and infected snails -- they similarly saw less reduction of ...

Eating with our eyes: Why people eat less at unbused tables

...en -- in this case, leftover chicken-wing bones -- ate 27 percent less than people who had no such environmental cues, finds a new Cornell study. The difference between the two groups -- those eating at a table where leftover bones accumulated compared with those whose leftovers were removed -- was grea...

How appetite-stimulating brain cells work overtime during fasting

...nzyme that stimulates thyroid hormone's production ate less than normal after a period of food deprivation. "This shows the key importance of UCP in the brain and its effect on neuronal activity," Diano said. "It's how neurons 'learn' that food is missing, and it keeps them ready to eat when food is ...

Why aren't humans furry? Stone-Age moms could be the answer

... Neanderthals went extinct because human ancestors ate them. This year's prize judge was Professor Jonathan Rees FMedSci of Edinburgh University, Scotland ?co-discoverer of the 'red hair gene'. Professor Rees said: "This paper is an excellent example of the kind of bold thinking and theorizing which D...

Post oak grasshoppers emerging

...and fed them to her chickens. The chickens readily ate them, giving Behmer a clue that they are not toxic to other animals. Normally, chickens will not eat what will harm them, Behmer said. Behmer is still not sure what the Easter weekend cold snap will do to the grasshoppers' population, but he want...

Bats prey on nocturnally migrating songbirds

...ontrol. The results elegantly showed that the bats ate only insects in summer, included some songbirds' flesh in their diet during spring, and depended a great deal on passerines during autumn. Moreover, a higher fraction of songbirds' flesh in autumn than in spring was attributed to the more massive pas...

Researchers find 6,000-year-old fossil evidence

... the Americas and that people in distant areas all ate them. This suggests that these groups might have had some type of contact with each other," Pearsall said. Loma Alta and Real Alto, the sites in southwestern Ecuador studied by Pearsall, turned up the oldest starch of domesticated chili peppers, a...

A steady, high-fat diet is bad, but the news gets worse

...d a fast-food breakfast from McDonald’s, the other ate dry cereal with skim milk, cereal bars and non-fat yogurt. "What’s really shocking is that this is just one meal," says Dr Tavis Campbell, a specialist in behavioural medicine and senior author of the study. "It’s been well documented that a h...

Unique tomatoes tops in disease-fighting antioxidants

...he study actually consumed less lycopene when they ate sauce made from the orange tomatoes, but they abso...taste. The 12 adults participating in the study ate two spaghetti test meals ?one included sauce made from tangerine tomatoes, while the other featured ...

Microbes compete with animals for food by making it stink

...ss microbe growth. In the lab, stone crabs readily ate both freshly thawed menhaden and fish that had soaked in water with antibiotics, but refused to eat the rotten fish not protected from microbial attack. To determine if reducing bacterial growth affected an animal's ability to find the bait, resea...

Eating protein boosts hormone that staves off hunger

...ess weight and produced more PYY than animals that ate the usual amount of protein, they found. In addi...at genetically modified mice unable to produce PYY ate more and became markedly obese. The genetically modified mice were also resistant to the beneficial ...

A buffet for early human relatives

...s. "By analyzing tooth enamel, we found that they ate lots of different things, and what they ate changed during the year," says University of Utah geology doctoral student Ben Passey, a coauthor of...

Psst! Coffee drinkers: Fruit flies have something to tell you about caffeine

...ked at the color of their bellies to see what they ate - blue indicating a preference for eating sugar, red indicating a preference for bitter caffeine, and purple indicating no preference. Flies missing the critical taste receptor protein Gr66a consumed the bitter caffeine solution to the same extent a...

Fatty fish protects against cancer

...ancer by 74 per cent compared with those who never ate fatty fish. The group who ate fresh fish at least once a week but for whom follow-up information were unavailable, saw a 40 per ce...

'Mindless autopilot' drives people to underestimate food decisions

...uestions about when, what, how much and where they ate and who made decisions about meals, snacks and bev...served themselves foods into smaller serving bowls ate almost 60 percent less than when they are served helpings in larger bowls. See it before you eat...

Cougar predation key to ecosystem health

... enemy gone, growing and ravenous deer populations ate young cottonwood trees almost as quickly as they sprouted, robbing streambanks of shade and erosion protection. As a result, floodplains began to erode away. Other types of vegetation and the animal species dependent on them suffered. And unless so...

Eat less, weigh more? Enzyme makes lean mice 'susceptible' to dietary fat

...rd laboratory mouse chow, the knockout mutant mice ate about 25 percent less food than their normal sibli... with lard) for 10 weeks, mice lacking CPT1c still ate less than their normal littermates, but they were much heavier. What scientists already know about...

Leptin has powerful effect on reward center in the brain

...eceptor in the VTA region resulted in animals that ate too much and were hypersensitive to highly palatable foods. "Interestingly, despite the increase in food intake, these animals did not gain weight, possibly as a result of increased activity that was also seen in the animals," DiLeone said. Food in...

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