Tag: "eggs" at biology news
All the eggs in one basket
...e only way to avoid the risk of putting all turtle eggs
in a very few baskets." Conservation implications of historic sea turtle nesting beach lossLoren McClenachan, Jeremy Jackson and Marah Newman (Scripps Institution of Oceanography)Frontiers in Ecology and the Environment 2006; 4(6): 290-296 ...
Cat parasite may affect cultural traits in human populations
... parasite involves a cat and its prey, starting as eggs
shed in an infected cat's feces, inadvertently eat...alence by increasing exposure risk. The parasite's eggs
can live longer in humid, low-altitude regions, especially at mid latitudes that have infrequent fre...
Lab bits -- August 2006
... as he studies starfish and sea urchins to see how eggs
are built and maintained. Molecules in egg cells ...berg is testing the stalk hypothesis on sea urchin eggs
and the nerve cells of the Woods Hole squid....
USGS at 2006 International Mercury Conference
...the Case of Mercury in Bird Eggs: Protecting bird eggs
may help protect other wildlife, but how? Since m...allards show that harmful thresholds of mercury in eggs
are as little as .8 parts per million of mercury. But how much mercury is harmful in the eggs
A humble aquarium fish may be the key to new therapies for birth defects
...ebrafish are easy and inexpensive to raise and lay eggs
that are transparent and develop outside the body. Much of the zebrafish genome has been sequenced, allowing researchers to identify human versions of zebrafish genes and vice versa. These qualities make the zebrafish exceptionally handy in studying ...
With few factors, adult cells take on character of embryonic stem cells
...Those findings provided evidence that unfertilized eggs
and embryonic stem cells contain factors that can confer pluripotency to differentiated cells, Yamanaka said. "We hypothesized that the factors that play important roles in the maintenance of embryonic stem cell identity also play pivotal roles in ...
FSU biologists uncover mechanisms that shape cells for better or worse
...'s proper functioning. Their findings in fruit fly eggs
may help to clarify how muscular dystrophy and some cancers develop in humans. That's because many of the genes involved in the cell-to-cell communication that triggers the development of cell polarity in Drosophila oocytes (unfertilized fruit fly ...
New company will seek drugs against diabetes and cancer
... screening system in which fruit flies, grown from eggs
to adults in tiny chambers, serve as indicators of a drug's effect. In this instance, if a fruit fly can grow normally on a high sugar diet in the presence of a particular drug, the drug could potentially lessen the toxicity of high sugar in diabetic...
Sturgeon's general warning: stable for now, but beware
... "This means that either the females aren't laying eggs
or that they aren't spawning at all - both of whic...ver). The fish is a broadcast spawner, meaning its eggs
are fertilized in the water. After fertilization, the embryos develop on the river bottom and, once ...
Biological pest control becomes an economic reality
...ll be a clear alternative to the costly flour-moth eggs
used as food to date. The project has also developed coated gel substrates which form a suitable base for these insects to lay their eggs. Used as a substitute for the bean pods or tobacco plants which are the bugs' natural choice, the gel substrates...
Study finds how organs monitor themselves during early development
...the ovary, the egg on its own would not ripen. The eggs
need this environment for their development, she says. In every organism, both egg and sperm cells cannot develop unless they are embedded in a matrix of somatic cells, says Dr. Lehmann. Interactions of somatic cells and germ cells are of central...
University of Pittsburgh receives $1.3 million from NIH to develop promising avian flu vaccine
... in which the virus is grown in fertilized chicken eggs
and then killed by heat or chemicals, take a minimum of four to six months to make and typically produce an immune response against only one strain of the virus. Since there is evidence that H5N1 is beginning to mutate, more traditional vaccines may ...
ACS News Service Weekly PressPac -- August 30, 2006
...udies sparked efforts to produce high-CLA poultry, eggs
and pigs by feeding CLA to animals. However, it has been difficult to get those animals to incorporate large amounts of CLAs. Yeong L. Ha and colleagues now report that silkworms fed CLA-coated mulberry leaves at a certain stage in their growth cyc...
Scientists crack genetic secrets of human egg
...ntroversial. This work used onlyunfertilized human eggs
that were obtained from women seeking fertility tr... donors granted informed consent for their surplus eggs
to be used for this research. Cibelli worked with researchers in Chile to extract the RNA from the...
Virus may control Australia's "river rabbit"
...weight and each female can lay up to three million eggs
in a single season," Dr Crane says. "In some areas of south-eastern Australia carp make up more than 85 per cent of the fish in the rivers and creeks. "The virus works by attacking the carp's gills as well as other vital organs and eventually killing...
Existing vaccine facilities can handle flu pandemic
...d. It takes much longer to compile millions of hen eggs
than it would to grow up existing cell lines from frozen vials, Lash said. While cell culture has a lower yield than egg culture, there is more existing capacity for cell culture than for inoculating and processing eggs. "Based on existing dosages,...
Carnegie's Joseph G. Gall wins 2006 Lasker Award
...hromosomes in any animal. They reside in amphibian eggs
and were named when first viewed in the nineteenth...narrow chimneys of lamps. Gall looks at the unlaid eggs
from the frog Xenopus, which are up to 1.5 millimeters (mm) in diameter, with a nucleus, or germinal...
Bird moms manipulate birth order to protect sons
...ers her sons from the blood-suckers by laying male eggs
later than those containing their sturdier sisters...rs minimize sons' exposure to mites by laying male eggs
later than female eggs. As a result, the males are in the nest fewer days." Even so, the male chi...
Obesity crisis in insects? Not a problem, says expert
...starch plants, female moths preferred to lay their eggs
on these same plants. This, Behmer said, is one of the first instances of a moth showing egg-laying behavior that is tied to a plant's nutritional chemistry. Moths from low-starch plants might avoid the high-starch plants because these plants might...
Crickets on Hawaiian Island develop silent wings in response to parasitic attack
...hu and the Big Island, as well as descendants from eggs
collected on Kauai before 2003, continued to show normal wings. Only on Kauai were the mutated wings seen in male crickets in 2003. "Loss of calling clearly seems to be protecting the male crickets from the deadly fly," Zuk said. "But this protect...
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