Tag: "domesticated" at biology news

Ecological risks of GMOs come in unexpected ways, model shows

...rt by the Royal Canadian Society found that highly domesticated crops, such as corn and soybeans, rarely become weeds in natural settings because "the cultivated species have been genetically crippled through intense artificial selection." "What this means is that the more wild an animal is, the greater the envir...

First of crop killer's genome sequence available

...rrorism. Certain strains of the fungus can attack domesticated grasses such as barley, wheat, pearl millet, and even turf grasses. Rice blast disease, once thought to be confined to only developing nations, has emerged in the United States over the past decade with the widespread introduction of rice as a crop ...

Wild plant or food plant?

...heir offspring. Thin sections of the soft rinds of domesticated species lacked lignification and big, scalloped ph...o determine whether plants in ancient samples were domesticated or wild varieties....

Medicated ecosystems: Human drugs alter key aquatic organism

...s. "Up to 80 percent of drugs taken by humans and domesticated animals can be excreted in their biologically active form," explains Flaherty. This means that the antibiotics, antidepressants and anti-inflammatory pills we either take or throw out can eventually end up polluting the environment and harming the or...

Tiny bugs in mealybugs have smaller bugs inside them

...robiology professor Paul Baumann. "The insect has domesticated a bacterium for its own use," Baumann said. So far, no one knows what benefits flow to the insect or the P-endosymbiont from the S-endosymbionts, he said. Baumann, with postgraduate researcher My Lo Thao and entomology professor Penny Gullan studied...

Once big bad wolf, now man's best friend: Science studies trace dogs' origins

... Researchers don't yet know just how or why humans domesticated dogs, but the speed at which dogs seem to have mul...ighest in East Asia, suggesting that dogs had been domesticated there the longest. Previously, researchers had generally looked to the Middle East as the setting fo...

Predicting the movement of genes

...ne fear is over the movement of altered genes from domesticated populations to the wild and the effect of these "e...t of three specific alleles, or genes, in wild and domesticated sunflowers to determine how often and to what extent these plant populations will hybridize and pass...

An origin of new world agriculture in coastal Ecuador

...Large phytoliths correspond to the large fruits of domesticated plant varieties in comparison to the smaller phyto...e Americas. Larger phytoliths like those found in domesticated varieties of Cucurbita ecuadorensis, the only cucurbit squash native to Ecuador, were clearly eviden...

Sneak copulations and the demise of the integrity of wild salmon populations

...it was believed that the threat from the spread of domesticated traits in the wild was reduced by the relatively poor reproductive success of males escaping from marine netpens. Recent evidence in a paper soon to appear in Ecology Letters by Garant, Fleming, Einum & Bernatchez, however, indicates that, similarly...

Seed dormancy may hold the key to fighting weeds

...ted dormant weedy strains of rice with non-dormant domesticated strains to develop populations segregating for dormancy. Then they determined some classical genetic attributes, such as heritability associated with several populations segregating for dormancy. "Our initial research demonstrated that weedy rice pr...

New science at K-State attracts $4.2 million from National Science Foundation

...es the molecular biology of C. elegans, which is a domesticated cousin of free-living soil nematodes. To understand its molecular biology, the roundworm has been studied for years under controlled laboratory conditions, not in its natural habitat. Herman will put the worm back into prairie soil in order to identi...

Scientists find gene that protects against potato blight

...erred resistance on the wild Mexican cousin of the domesticated tubers familiar to consumers. In 2000, Helgeson's lab reported narrowing the search to one of the 12 chromosomes of the wild plant. Now, with the gene identified, cloned and successfully tested in engineered varieties in the laboratory, at hand is a ...

Weather extremes shed light on prairie's past and environment's future

...go, at which time the tall grasses arose. Shorter domesticated grasses and farmers' fields of corn, wheat and soybeans have since replaced the tall grasses. To the north and south of the tall-grass region, there emerged extensive forests. A long-debated scientific question, the researchers noted, is why the tal...

Borneo elephants: A high priority for conservation

...iew that these animals had descended from imported domesticated elephants. Until now, there was no solid evidence to refute this belief and no reason to prioritize the conservation of Borneo elephants. Their new status, as revealed by this study, has profound implications for the fate of Borneo's largest mammals...

Non-lethal methods can resolve conflicts between bears and humans

...ilar to the "invisible fence" collars used to keep domesticated dogs on home properties. Some wolves simply tolerated the mild electronic shocks and continued to feed "There is no single solution for every situation but individuals and communities should be given a variety of options so they can tailor their resp...

Unlocking the genetics and evolution of the dog could prove beneficial for humans

SEATTLE, WA For thousands of years, humans have domesticated and established relationships with dogs. Today at the 2004 AAAS (Triple-A-S) Annual Meeting, a panel of dog enthusiasts (who also happen to be scientists) celebrate the canine species with new research mapping current purebred breeds back to a single...

ESA calls for interdisciplinary studies of GEOs

... likely to require more ecological study than most domesticated food crops." "Several environmental risks associated with gene flow, the evolution of resistance, and certain non-target effects could be irreversible," Snow said. "Additional research is needed to evaluate circumstances under which this could happen...

Mexican farmers effectively cultivate phenotypic diversity in maize

... a descendent of a local wild grass, teosinte, was domesticated and phenotypically diversified by human action, at least 6 000 years B.P. An in-situ conservation programme jointly run by CIMMYT, INIFAP (Mexican National Institute of Research in Forestry and Agriculture and Livestock Breeding) and the IRD, conduct...

Domesticated tree crops may be the 'future of forestry'

...y research at Purdue University that could lead to domesticated trees, the forestry equivalent of crop plants like...scovery is to domesticate trees, just like we have domesticated corn over the past 5,000 years," he said. "If we can produce trees for specific purposes, like makin...

Many scientists believe the dog genome holds information that will benefit human health

...oup may be telling us something about the original domesticated dog population," Kruglyak said. One of the other three other groups contains Mastiff-like breeds that share common physical characteristics. Another includes Shetland and Belgian sheepdogs, Collies and other dogs with herding behaviors. The fourth ...

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