Tag: "foraging" at biology news
Body clocks keep migrating monarchs on course, Science study shows
...because they don't learn their route, as honeybees foraging
for nectar do, for example. "Monarch butterfly nav...onarch navigation a bit simpler than navigation in foraging
insects where each new route has to be learned," Reppert said. Understanding how the circadian clock...
Seal pups recognize mother's voices within days of birth
... recognition process. When a mother returns from a foraging
trip, she is confronted with both acoustic jamming and a high risk of visual confusion and finding her pup under such conditions should be difficult. Yet Charrier learned that upon return, mothers and pups can recognize each other with seven minutes ...
'Work stinks': It's more than just a slogan among ants, researchers find
... the colony, and "patrollers," who scout potential foraging
areas each morning. "The return of the patrollers ...nly have to collect about 30 patrollers to inhibit foraging
in a nest," Greene added. Thirty minutes after the roundup, researchers began dropping patroller-sce...
Diet study focus of TAES research in effort to help save giant panda
... attempt to understand the nutritional ecology and foraging
strategy of the species. Researchers will analyze a diet of bamboo as well as a supplemental diet. Tolleson said his lab will analyze the fecal samples, "trying to develop diet quality predictions to help maintain them in captivity, but the big pict...
Bright beaks provide honest look at male immune system, Science study says
...-dependent signals. These include immune function, foraging
efficiencies, susceptibility to and cost incurred by parasites, and the amount of energy an individual requires to convert dietary carotenoids into a usable form. Though beak color is probably not the only factor involved in blackbird sexual signali...
Honey bee genome being sequenced
... Has sophisticated cognitive abilities to maximize foraging
success. Honey bees are excellent at associative learning, based on the need to associate a color, shape, scent or location with a food reward. In fact, honey bees are being studied by the U.S. Department of Defense as sentinel species that co...
UCR entomologists report bee-dancing brings more food to honeybee colonies
.... A UC Riverside study reports that under natural foraging
conditions the communication of distance and direc...ovides insights that may be of use in manipulating foraging
behavior of honeybees for pollination of crops." There has been a long-simmering controversy over wh...
Ecological significance of tool-use in the woodpecker finch Cactospiza pallida
...se is even more profitable than using conventional foraging
techniques. Although it takes more time, prey obtained with the help of tools is larger and contains more energy....
'Fowl-howl' ties discovered between birds, monkeys
...ed with howler monkey densities. Finally, detailed foraging
observations of the birds on small islands have shown that there do appear to be more insects available on the islands with dense bird populations." He and other researchers are currently doing chemical and nutrient analyses of soil and growing and ...
Falklands penguins forage far enough from home to get into trouble
... southwest of New Island, well within the range of foraging
Rockhoppers. In addition, fleets from several nati...cial Cooperation Area, and some spent several days foraging
for fish in that zone, where future oil exploration is possible. That was a surprise to many people,...
Origin of bipedalism seems most closely tied to environmental changes
...ome kind of tool use, and an increased emphasis on foraging
from branches of small fruit trees, which is the context in which modern chimpanzees spend the most time on two legs. For their study, the researchers combined data from biomechanics movement and posture, pressure distributions and strain gauge and...
Gene plays key evolutionary role in food-gathering behaviors
...helped along by an increase in the activity of the foraging
gene (for). It stimulates an activity-boosting enz...ound to influence naturally occurring variation in foraging
behavior in Drosophila. Rover flies that cover large areas have high levels of PKG, while sitter fl...
Ambushing prey may make snakes vulnerable
... 18,000 preserved specimens. Thetraits ranged from foraging
behavior (ambush vs. active hunting) toreproduction type (egg-laying vs. livebearing) to use of 25 habitattypes (such as grassland, forest and swamp). Reed and Shine found two main behavioral differences between threatenedand non-threatened elapid sn...
New theory of the evolution of bird flight linked to parental care
...ly more and higher quality food by expanding their foraging
range. He adds that the fossil record, specifically Archaeopteryx, provides ample evidence that the evolution of parental care was the main driving force behind the evolution of avian flight. For example: Fossil specimens of Archaeopteryx have for...
Counterintuitively, after extreme droughts, wading birds flourish
...other birds spend their entire lives around water, foraging
in it for fish and nesting in the grasses above it for protection against predators. To Frederick, a wading-bird expert at the University of Florida Institute of Food and Agricultural Sciences, three years of bone-dry conditions would surely force th...
URI oceanography models migration and foraging strategies of North Atlantic right whales
...al cycle of distribution, migration, movements and foraging
of the whales. Over long-distance migrations o... much that remains unknown about the migratory and foraging
strategies of right whales, said Kenney. However, it is clear that right whales are capable of detec...
Protein tied to Alzheimers also plays key role in honeybees
... nursemaids, among other roles. They then shift to foraging
outside the hive when they are about 3 weeks old. The shift to foraging
requires the learning of new skills, many revolving around vision and smell. AChE accounts for almos...
Prescribed burning may threaten ground nesting birds
... burned areas, suggesting that fire improved their foraging
habitat. Artman and her colleagues conclude that long-term or large-scale prescribed burning could change the songbird community in eastern deciduous forests....
Analysis of flight performance in wandering albatrosses yields insights into foraging patterns of different ages and sexes
...rosses it appears to affect flight performance and foraging
patterns, said Scott Shaffer, a research biologist...fties," and "screaming sixties." A male albatross foraging
too far north would be likely to encounter winds too light to sustain efficient soaring flight. But ...
University of Illinois at Chicago expert tinkers with evolution to create human 'Built-to-Last'
... contributed to human intelligence and an expanded foraging
range, the authors note, but at the price of aging-related disorders, including slipped disks, lower back pain, varicose veins and worn-out joints. Where our heads are concerned, the authors cite the weak link between the optic nerve and retina, w...
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