Effects of Maternal stress in Wild animals

If a human mother is stressed while pregnant, research shows her child is much more likely to have emotional, cognitive or even physiological problems, such as attention deficit, hyperactivity, anxiety, language delay, obesity, diabetes and hypertension. Conversely, the results of maternal stress on the offspring of other animals -- particularly wildlife under threat from predators -- is believed to be positive, and contributes to their survival.

From an evolutionary perspective, prey animals such as this 12-hour-old snowshoe hare -- born into an environment fraught with danger -- benefit if they are born wary and fearful, so they are automatically hiding, even though they have never seen a predator before. Credit: Michael Sheriff/Penn State
However, much more needs to be known about the effects of maternal stress on animals, according to a researcher in Penn State's College of Agricultural Sciences, who outlined areas for further study in an article published online in Integrative and Comparative Biology.
Prenatal exposure to maternal stress in animals can influence offspring characteristics and behaviors and there are an increasing number of ecological studies linking biomedical findings to natural systems, according to Michael Sheriff, assistant professor of mammology and ecology.
Primarily responsible for the impact of maternal stress on unborn babies are glucocorticoid

Spiny, armored Slug reveals ancestry of Molluscs


A 480-million-year-old slug-like fossil has been uncovered in Morocco, shedding new light on the evolution of molluscs -- a diverse group of invertebrates that includes clams, snails and squids.
Source: Sciencedaily

New Bucktoothed Ghost Shark Species Discovered


Hydrolagus erithacus has rabbit-like teeth. Credit: Kristin Walovich
A previously unknown ghost shark with rabbit-like teeth and a bulky head is making waves in record books; it's the 50th ghost shark species known to science, a new study reported.
At nearly 3 feet (1 meter) in length — about half as long as the height of a refrigerator — the newfound creature is the second largest species of ghost shark ever discovered, the researchers said.
"[Ghost sharks] in general have a pretty big head and their body tapers to a thinner tail. This

Scientists’ lives upended by Trump’s immigration order

Protestors opposing Trump's refugee order greet passengers arriving from international flights at Dulles airport in Virginia

Ehssan Nazockdast was planning to attend his sister’s wedding in Tehran in March. One hitch: The specialist on fluid dynamics at New York University in New York City is an Iranian citizen. That leaves him vulnerable under an executive order, signed by U.S. President Donald Trump on Friday, that calls for the rigorous vetting of applicants for U.S. visas from Iran and six other predominantly Muslim nations, and bars the entry of any citizen from those nations for 90 days while procedures for that vetting are put in place. Nazockdast has lived in the United States for nearly a decade, has a green card, and has two young daughters with a wife who is a U.S. citizen. But now that Nazockdast is branded with a scarlet letter, he dare not leave. “I’m living in a big prison called the United States of America,” he says.

The new executive order has sparked chaos at U.S. airports and angst in anyone from the target countries—Iran, Iraq, Libya, Somalia, Syria, Sudan, and Yemen—with a valid U.S. visa or green card who happened to be outside the United States when the order was signed. It

Cheetahs Are Racing Toward Extinction

A new study has revealed that just 7,100 cheetahs remain in the world.
Credit: Zoological Society of London
The research revealed that only 7,100 cheetahs remain globally and that the speedy animal has lost 91 percent of its historic habitat range. Due to human development,