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tadpoles in Medical News

Skin color studies on tadpoles lead to cancer advance

The humble tadpole could provide the key to developing effective anti-skin cancer drugs, thanks to a groundbreaking discovery by researchers at the University of East Anglia (UEA). The scientists have identified a compound which, when introduced into Xenopus Laevis tadpoles, blocks the movement...

Mass. General team develops potentially safer general anesthetic

... be rapidly metabolized by adding a molecule that causes the drug to broken down by natural enzymes soon after producing its effects. Experiments in tadpoles and rats showed that the new agent, MOC-etomidate, quickly produced anesthesia from which the animals recovered rapidly after administration ceased. ...

Golf Courses Could Serve as Wildlife Sanctuaries If Managed Properly

...the cycles of other amphibians (typically one to four months), the bullfrog tadpoles have advantages in permanent ponds and can grow larger and more powerful, n...dging out other species. By drying golf course ponds in the early fall, the tadpoles can be eliminated," he said. The study is scheduled for publicatio...

Medications Detected In Recycled Water In Los Angeles

...boratory tests, conducted by ecotoxicologist Marsha Black at the University of Georgia, Prozac a drug has slowed down growth and metamorphosis, making tadpoles more vulnerable to predators. The drug also causes lethargy and slows reproduction in fish and reduces reproductive rates in crustaceans and shellfish...
tadpoles in Biological News

Penn researchers demonstrate a new model for drug discovery with a fluorescent anesthetic

...ered anesthetic research. Researchers confirmed the compound as anesthetic after testing it successfully in tadpoles. By using transparent, albino tadpoles in the study, researchers were able to follow the fluorophore tag and image it in the brain of the immobilized, living animal. Because the compoun...

Carnegie's Donald Brown receives lifetime achievement award from Society for Developmental Biology

...here they stop. In 1990, Brown changed his research to a more complex problem, the control of gene expression that regulates the transformation of tadpoles into frogs. The many developmental changes that occur when a tadpole turns into a frog are controlled entirely by thyroid hormone. By studying its rol...

Climate change effects on imperiled Sierra frog examined

... frogs were historically restricted to small lakes in Dusy Basin as they are today. Larger lakes free of introduced fish would have provided frogs and tadpoles an important refuge in dry years. The U.S. Fish and Wildlife Service has determined that listing the Sierra Nevada Yellow-legged frog as an endange...

Pitt research finds that low concentrations of pesticides can become toxic mixture

... Sciences, exposed gray tree frog and leopard frog tadpoles to small amounts of the 10 pesticides that are wid...all 10 chemicals killed 99 percent of leopard frog tadpoles as did the insecticide-only mixture; the herbicide...too small to directly kill developing leopard frog tadpoles instead sparked a biological chain of events that ...

Red-eyed treefrog embryos actively avoid asphyxiation inside their eggs

...eggs is ready to hatch after only four days. By delaying hatching by a few more days, frog embryos significantly increase their chances of survival as tadpoles in the pond below where predators lurk. But as each egg matures, and embryos need more oxygen, less and less of the vital substance is available insi...

New CU-Boulder study shows diversity decreases chances of parasitic disease

...ases. The experiments showed that when the toad tadpoles were raised in tanks with the parasitic trematodes...stant Professor Pieter Johnson. But when the toad tadpoles were joined in the tanks with gray tree frog tadpo...author of the study. The study showed tree frog tadpoles acted as "sponges" for the trematode parasites, wh...

UGA study reveals ecosystem-level consequences of frog extinctions

...ter an amphibian population decline has found that tadpoles play a key role keeping the algae at the base of t...found that the system was more productive when the tadpoles were there." The results, which appear in ...ystems, demonstrate how the grazing activities of tadpoles help keep a stream healthy. The researchers found ...

Racing cane toads reveals they get cold feet on Southern Australia invasion

...p once they get below about 15 degrees Celsius", said Dr. Tracy. "Their range would also be constrained by the limited availability of water for their tadpoles in some parts of Australia". After racing their toads, Kearney and his colleagues used sophisticated computer models developed by Dr Warren Porter ...

Dying frogs sign of a biodiversity crisis

...n this area came in the 1990s, and researchers originally thought that rainbow trout introduced to this area were the culprits - they like to snack on tadpoles and frog eggs. The UC Berkeley team did experiments in which it physically removed trout from some areas, and the result was that frog populations sta...

New study points to agriculture in frog sexual abnormalities

...nd the Environment dissertation. Several past studies have suggested a link between herbicides commonly used in farming and sexual abnormalities in tadpoles and frogs. Such deformities may be responsible for declines in frogs documented in areas affected by agricultural contaminants, such as Sierra Nevada,...
tadpoles in Biological Dictionary

Xenopus

...es. DOE Joint Genome Institute (JGI) X. tropicalis v4.1 ... Adult Xenopus laevis are carnivorous and eat submerged in water. ... Xenopus laevis tadpoles are filter feeders and will begin to feed on suspended ... ...
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