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Tag: "nests" at biology news

Can our genes tell the story of our divergence?

..., and developed the skills to construct tree-bound nests high above the forest floor. We differ by just a tad over 1% at the DNA sequence level, yet scientists predict that both species should harbor genetic footprints of our divergence ?the subject of a recent study in the premier open-access journal PLoS...

Ants win a waxy race

...ippery waxy plant surfaces in order to reach their nests and food supplies. Some Macaranga trees in South East Asia have waxy stems to protect themselves from ants and other insects. Only one specific ant is capable of running up and down the stem, in order to access its nest and food supply inside the ste...

Mayan stingless bee keeping: Going, going, gone?

...as, Mayan bee keepers harvested honey from the log nests of stingless bees native to tropical forests. Now, colleagues from the Colegio de la Frontera Sur in Quintana Roo, Mexico and the Smithsonian Tropical Research Institute (STRI) warn of the imminent demise of stingless bee keeping on the Yucatan ?a re...

Ants, not evil spirits, create devil's gardens in the Amazon rainforest, study finds

... show that the ant, Myrmelachista schumanni, which nests in D. hirsuta stems, creates devil's gardens by poisoning all plants except its hosts with formic acid. By killing other plants, M. schumanni provides its colonies with abundant nest sites--a long-lasting benefit, as colonies can live for 800 years."...

Removing egg from nest may help save endangered whooping crane

...ion. The last remaining whooping crane population nests in Wood Buffalo National Park and winters at the Aransas National Wildlife Refuge in Texas. At one point the bird's numbers reached a low of 16 in 1942 but the population has since increased to more than 200 birds. Not only has the Wood Buffalo-Aran...

Overfishing may drive endangered seabird to rely upon lower quality food

...eabirds were nesting, and for those that did, many nests failed for a variety of reasons." The researchers analyzed marbled murrelet feathers from 136 birds collected in the Monterey Bay region between 1895 and 1911. The historic feathers represent a time period prior to the onset of intensive fishing, de...

Primates harvest bee nests in Ugandan reserve

...tionally harvested honey for food, located 228 bee nests (both honeybees and stingless bees) for the study....rown form of Meliponula ferruginea.Honeybee (Apis) nests were numerous compared to other sites in the tropics, whereas honey-making stingless bee nests were ...

Genetic study shows humans have pushed orangutans to the brink of extinction

...ir study, the researchers collected hair from tree nests and feces found under nests or near orangutans encountered along the Kinabatangan River. Two hundred orangutans were identified ...

Honeybee decision-making ability rivals any department committee

...ongly for the other site. offered five desirable nests and found that it took much longer for a quorum to develop at any one site, and takeoff took almost twice as long. To study whether bees always choose the best site, the researchers offered swarms four small and one superior site in size. Although th...

Leave it to salmon to leave no stone unturned

...d tip the scales at 45 pounds or more. The biggest nests are nearly a foot and a half deep and extend up to...ds more than once, being forced to superimpose new nests on top of old nests when the females run out of room. Moore's work and the UW's Alaska Salmon Progr...

How to grow a bigger brain

... Biology. Wild steelhead lay their eggs in gravel nests on the riverbed. After hatching, the fry, called alevins, stay among the gravel and live off their yolk sac until they emerge as free-swimming fry. In hatcheries, the fish are reared in tanks of clean, well-aerated water, but without environmental fe...

Invasive ants territorial when neighbors are not kin

...m expansive "supercolonies" containing millions of nests and stretching hundreds of miles. Researchers hav...the lack of aggression between ants from different nests in the same colony. "Some ecologists have hypothesized that environmental factors act to reduce ...

Bumblebee house warming -- it takes a village

... discovered some answers. By exposing bumblebee nests to a range of temperatures, the researchers found that the workers are effective at buffering the nest from temperature extremes. Some workers specialized in raising the temperature in a nest when they incubated the colony's young developing bees or...

Recently discovered species gain protection

...lining cerulean warbler ?a migratory songbird that nests in North America. "The area is such a remarkable center of micro-endemism that scientists believe more species may be there waiting to be discovered," said Claude Gascon of Conservation International, who is co-chair of the IUCN/SSC Amphibian Spe...

Uganda's mountain gorillas increase in number

...o census methodologies such as counting trails and nests (gorillas construct a nest each night), researchers used genetic analyses as well, specifically because many of the groups were clustered in the same area of the park, which presented survey teams with the risk of double-counting the same individuals...

Cambodian vulture nests offer hope for species

...Conservation Union (IUCN). "We discovered the nests on top of a hill where two other vulture species were also found, one of which—the white-rumped vulture—is also 'Critically Endangered'," said Song Chansocheat, manager of the Cambodia Vulture Conservation Project, a government project supported by W...

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