Although ice crystals form under the skin when frogs hibernate in the winter, a high concentration ofglucose occurring naturally in the frog's organs prevents the animal from freezing. Even when a deep freeze causes the frog's heart to stop beating and the frog to stop breathing, the body w...
Although ice crystals form under the skin when frogs hibernate in the winter, a high concentration ofglucose occurring naturally in the frog's organs prevents the animal from freezing. Even when a deep freeze causes the frog's heart to stop beating and the frog to stop breathing, the body w...
In reality of course all these factors likely played a role: structures do not always, or even often, evolve for a single reason. When people who know much more about ceratopsians tell me “The horns of Triceratops were for intraspecific display and combat”, I don’t doubt them. But ...
When I started my palaeo Masters (as it then was) at Portsmouth, I had a very bad habit of writing unnecessary double negatives of the kind the Sir Humphrey Appleby might use. Instead of saying “Taxon X resembles taxon Y”, I would say “is not dissimilar to”. I did this all the ...
The outbreaks of emerging and reemerging diseases have a high impact on the human and animal health because they are the underlying causes of disability, death, and long-term illness. For many regions those details are not, or just poorly known. Here we
Juvenile African clawed frogs, Xenopus laevis, were exposed to commercial formulations of THX and CLO at high (100 ppm) and low (20 ppm) concentrations of the active ingredient. Mortality, growth, development, liver metabolic enzyme activity, and gene expression endpoints were quantified. Tadpoles ...