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Tag: "breeding" at biology news

Horseshoe crab decline threatens shorebird species

... enough energy to complete the trip north to their breeding ground in the Artic. However, due to horseshoe crab's popularity as bait used by fishermen, the crabs appear to be in serious decline. At the same time, there has been a great reduction in the total population of red knots, the report notes. "The n...

Successful cell engineering may lead to mad cow prevention, say researchers

...in a cloned goat fetus, perhaps paving the way for breeding disease resistance in other animals, even those genes that might cause bovine spongiform encephalopathy (BSE), commonly known as Mad Cow Disease. Researchers Mark Westhusin and Charles Long in Texas A&M's College of Veterinary Medicine & Bio...

Bringing the zoos to the zebras

...hted recent efforts by zoos to move beyond captive breeding and research programs to integrate these activities with conservation efforts in the field. WildCare Institute has become a world leader in this movement, and other speakers described their partnerships supporting conservation efforts in Nicaragua, G...

Spring migration of pink-footed geese under threat

...nchus) prepare for their spring migration north to breeding grounds in the Arctic, ecologists are warning that.... We are already seeing signs of decreasing annual breeding success and decreased summer survival as a result of poor body condition when the geese depart from ...

Researchers release new variety of asparagus

...ragus Commission who long supported the asparagus breeding program in the state, the superior hybrid marks th...and Plant Sciences and the leader of the asparagus breeding project. "Indeed, Neil Stone, a staff research associate at UCR, and I are working on other promisin...

Virginia Tech helping to develop higher quality, disease-resistant wheat varieties

...lion from the USDA to enable routine use of modern breeding technologies to produce higher quality, disease-re...nalyses required to deploy the targeted genes into breeding lines. The genetic information will be stored in national databases and seed stocks deposited in US...

HortResearch science reveals the natural potential of apples

...lready being employed to support the company's own breeding programmes for novel apple varieties, including a recently revealed red-fleshed apple. ...

Removing DNA repair gene causes metabolic syndrome

...s. This happens every second of your life." After breeding several generations of NEIL1 "knock-out" mice, Lloyd's colleague and the study's lead author, Vladimir Vartanian, Ph.D., found that the mice lacking the enzyme reached weights of between 45 and 52 grams at age 7 months, while normal mice weighed in a...

El Nino events affect whale breeding

... of scientists found a strong relationship between breeding success of whales in the South Atlantic and El Nino in the western Pacific. The results are published this week in the On-line journal Biology Letters. Southern right whales migrate from the South Atlantic to the Southern Ocean to feed. Scientists k...

Report shows deforestation threatens Brazil's Pantanal

... in turn can compromise resources such as food and breeding sites offered by the forests and other types of vegetation. An example is the hyacinth macaw, a species threatened with extinction, which depends on a tree commonly called 'manduvi' (Sterculia apetala) for shelter and reproduction. Without this speci...

Males with elevated levels of testosterone lead shorter lives but have more success siring offspring

...survival, in the wild or experimentally. Over nine breeding seasons, Wendy Reed (North Dakota State University) and her colleagues followed a group of dark-eyed juncos, small mountain songbirds found throughout North America. They injected males with elevated levels of testosterone and found that they had sho...

Uncovering sex-change secrets of black sea bass

...velopment and away from growth. Such problems make breeding and growing the fish in captivity a tricky proposition. "Black sea bass is a wonderful fish to culture and to eat," says George Nardi, vice president and director of GreatBay Aquaculture, a commercial fish farm in Newington, NH. But the sex change ...

Mice with glowing hearts shed light on how hearts develop

... of Veterinary Medicine. Cornell researchers are breeding new lines of mice with similar proteins that target neurons in the brain, in parasympathetic nerves, in blood vessels or in Purkinje fibers, which prompt the heart's ventricles to pump. The researchers have also transplanted cells from the mice with ...

ASU researchers find link between social behavior, maternal traits in bees

...at Davis, Amdam met professor Robert Page, who was breeding honeybee strains distinguished by whether the worker bees were more likely to collect pollen or nectar. Besides their differing collecting habits, the strains possessed various other physiological and sense-related traits, but researchers did not und...

How to grow a bigger brain

... results could affect the design of hatcheries for breeding fish to restock wild populations, Kihslinger said....not distinguished between the effects of selective breeding for "domesticated" fish and of the environment in which the fish live. Kihslinger reared steelhead ...

Possible brain hormone may unlock mystery of hibernation

...ological events such as reproduction in seasonally breeding mammals and migration in birds, they said. Even humans can maintain seasonal rhythms as exhibited by seasonal affective disorder, a recurrent depression characterized by increased sleep, overeating, and weight gain--behaviors similar to those seen in...

Crucial site for endangered frogs and birds saved

...elopment for vacation homes. The site is the sole breeding ground for the Globally Endangered Santa Marta Parakeet. Another 18 bird species and five threatened amphibians can also only be found there. The site is a vital stopover point for declining neotropical migratory birds that breed in the United States...

Albatross study shows regional differences in ocean contamination

...in the Hawaiian Islands. But when they leave their breeding colonies on foraging trips, the black-footed albatrosses head northeast toward the West Coast of North America, while Laysan albatrosses head northwest toward the northern and western regions of the North Pacific. Black-footed and Laysan albatrosse...

Vegetables inhibit growth of prostate cancer in mice with human tumors

...in the Hawaiian Islands. But when they leave their breeding colonies on foraging trips, the black-footed albatrosses head northeast toward the West Coast of North America, while Laysan albatrosses head northwest toward the northern and western regions of the North Pacific. Black-footed and Laysan albatrosse...

Northern birds are fatter!

...they move further north ?as they get closer to the breeding grounds - and that the longer the birds spend hanging around at San Francisco Bay (one of the more southerly refuelling sites), the lower their fattening rates. Such differences in fattening rates cannot simply be explained by differences in the a...

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