Tag: "feeding" at biology news
Penguins march into new park
...y industry. The new park serves as a nesting and feeding
ground for some quarter million pairs of Magellanic penguin, estimated to represent 20 percent of the entire species. The park includes more than 40 small islands, which support the only two nesting colonies of southern giant petrels on the entire Pa...
JCI table of contents: Aug. 9, 2007
...burn. However, the molecular pathways that control feeding
behavior and cellular energy expenditure are highl...n of PPAR-alpha as a molecular pathway controlling feeding
behavior in mice. TITLE: Brain fatty acid synthase activates PPAR-alpha to maintain energy homeost...
Secret life of elephant seals not secret anymore!
...eveal in detail where the seals go on their winter feeding
trips, where they find food and where they dont, a...ected by the seals provided a detailed view of the feeding
behaviour of the seals in relation to oceanographic features. The measurements of temperature and sa...
Satellite tracking will help answer questions about penguin travels
..., their movements on the journey from their winter feeding
grounds back to their breeding colonies along the southern Argentina coast and the Islas Malvinas, or Falkland Islands. "We're missing that information. We know what happens when they leave the breeding grounds but we don't know what ha...
Census of Marine Life historians detail collapse of bluefin tuna population off northern Europe
...as a top predator in the North Atlantic ecosystem, feeding
largely on herring and mackerel, squid and other species. By one estimate from the 1950s, some 30% of all herring consumed by its predators in the area was ingested by bluefin tuna. The booming catches helped strip the Atlantic bluefin population i...
Universe's stringy birth revealed by young Czech scientist in EURYI winning project
...tance. Furthermore the string field has a habit of feeding
the rest of physics and mathematics by virtue of lying at the cutting edge of analytical reason. This is why it should interest lay people as well, insisted Schnabl. The very general public can be interested if they enjoy watching mankind's advances ...
Chickadee, nutchatch presence in conifers increases tree growth, says CU-Boulder study
...or their carbohydrate-high "honeydew" secretions - feeding
activity by birds can disrupt this relationship, triggering aphid population decreases and increases in tree growth. "These ponderosa forests have very complex food chains," Linhart said. "In essence the nuthatches and chickadees act as tree prot...
Testing the force of a shark's bite
...ms to reveal the cranial mechanics, bite force and feeding
behaviour in the Great White Shark using high resolution 3-D computer simulations. Last week Dr Wroe and his team dissected the five year old shark and measured the structure of its jaw and the muscles used in biting. Underwater experiments with ...
Parents seeking sex abandon 1 in 3 offspring
...ng taken by predators while incubating the eggs or feeding
the young. What is unusual about the penduline tit breeding system is that in one in three cases both males and females are willing to abandon the nest, even though the clutch will perish as a result. This could be said to be reminiscent of Hollywo...
Smithsonian's National Zoo researchers use electronic eggs to help save threatened species
...y ground-dwelling birds, inhabiting grasslands and feeding
on an omnivorous diet. Wild populations are threatened by habitat loss and poaching for their meat and feathers. Only the National Zoo and eight other institutions in the world have successfully bred kori bustards in captivity. There are four adul...
Humboldt squid on the move
...e south help carry Humboldt squid northward to new feeding
areas. However, Humboldt squid are believed to liv...authors suggest that Humboldt squid have been both feeding
and reproducing off Central California. Although Humboldt squid have historically been found in wa...
Did pterosaurs feed by skimming?
...verturns that inference, showing that this kind of feeding
was highly unlikely to have occurred in pterosaurs...Reading, and Sheffield in the UK, investigated the feeding
mechanisms of the pterosaurs using a variety of neat experimental and aerodynamic modelling techniqu...
Monkeys don't go for easy pickings
...land in Venezuela, used memory to travel to select feeding
resources during a period of fruit abundance. The...daily foraging pattern consisted of frequent short feeding
bouts and a few long feeding
bouts. Surprisingly, the sakis traveled four times further than the pr...
Cardiac patches stimulate regeneration, improve function after heart attack
...infarct size and a denser network of blood vessels feeding
the area. In contrast, the rats receiving Gelfoam alone showed little if any improvement. At the cellular level, the periostin-treated group had a 100-fold increase in the number of cardiomyocytes entering the cell cycle, and grew, on average, 6 mi...
Fat horses face health problems
...wners who can now consider altering their existing feeding
and management programs. Human health may also substantially benefit from this study, according to Dr. Thatcher, because humans suffering from obesity experience chronic inflammation. If obese horses are also found to suffer from chronic inflammat...
Loss of hemlocks will affect water dynamics in southern Appalachian forests
...to the base of the needles of the eastern hemlock, feeding
on carbon fixed by the trees, slowing growth and causing the needles to drop. Needle loss causes the crown of the tree to thin and dieback in branches; in a surprisingly short timeusually 5 to 10 yearsthe tree fades away and dies. To estimate the ...
Pumpkin: A fairytale end to insulin injections?
...research is very exciting the main finding is that feeding
pumpkin extract prevents the progressive destruction of pancreatic beta-cells but it is impossible to say whether pumpkin extract would promote regeneration in humans. He added: I think the exciting thing is that this may be a source of a medication...
Insects to solve crimes
...are born and the new individuals begin to develop, feeding
off the cadaver until they reach full size. Fly larvae, once developed and when about to pass to the adult stage, abandon the dead body because their predators are around. This is why, by the time a crime is investigated, there may be no insect lar...
Key to tackling malaria may lie in bed nets for adults and older children
...otected humans. Also, by preventing the mosquitoes feeding
on humans, the nets can divert them to feed on other mammals which do not host the malaria parasite, reducing the number of humans bitten and of mosquitoes carrying the parasite. Dr Killeen and colleagues acknowledge that the financial implication...
Tick-related disease thrives on cholesterol, study suggests
...t the end of the month, some of the mice from each feeding
group were infected with A. phagocytophilum. Ten days after infecting the mice, the researchers collected blood samples from each mouse and also harvested each animal's spleen and liver. They determined the extent of the infection based on the amou...
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