Tag: genes

black bear
January 19, 2023

What makes a black bear brown?

Despite their name, black bears don’t always have black coats. That can make it difficult to tell a brown-colored black bear (Ursus americanus) from a grizzly (Ursus arctos horribilis). Researchers...

December 17, 2021

A rare deer species has faced plenty of threats—but CWD may not be one

A rare Chinese deer has seen over a century of threats—ultimately resulting in its extinction in the wild. But research recently suggests that, thanks to their genetics, chronic wasting disease—a...

March 19, 2021

Genes let some bats survive white-nose syndrome

Little brown bats that survive the deadly white-nose syndrome have different genes than those that have died from it, researchers found, suggesting an evolutionary path for bats to survive a...

January 5, 2021

Genetic test can determine pesticide exposure in bats

A new test using just a drop of blood can tell research how much exposure bats have had to pesticides. “We know very little about the effects of pesticides, and...

August 25, 2020

Immune response to chytrid may kill frogs

People usually think of immune responses as helping bodies recover from diseases. But recent research showed the opposite for at least one frog species facing a deadly amphibian fungus. Lowland...

March 20, 2020

Red-winged blackbirds’ genes change when cowbirds are near

When brood parasitic brown-headed cowbirds are nearby, red-winged black birds’ genes function in similar ways to when they respond aggressively toward their own species, researchers found. “We always wanted to...

September 25, 2019

Genes play a role in warbler migration

For golden-winged and blue-winged warblers, where they go when they migrate south is in their genes, researchers found. “These small songbirds don’t really have a trainer or a navigator,” said...

June 12, 2019

Are Mid-Atlantic deer more susceptible to CWD?

Deer in the Mid-Atlantic may be more susceptible to chronic wasting disease than deer elsewhere, according to recent research, which found they carry more gene markers known to represent a...

January 31, 2019

Coyotes with blue-eyed mutation show up in California

Photographers and California residents have spotted and photographed blue-eyed coyotes (Canis latrans) throughout the state, from Sacramento to Santa Cruz. The species usually has golden-brown irises. Biologists say the blue...

January 10, 2019

What makes two species different?

Scientists have long believed that the difference between two species came down to reproductive incompatibility as a result of adapting to different environments. But researchers recently found that may not...