For example, one trapper in the United Kingdom has been harvesting North American signal crayfish as a means of population control for decades. In the U.S., chefs have been introducing wild boar ...

The deadly plague, which is usually carried by American Signal crayfish, has killed thousands of white-clawed natives since it was first detected on the river Ure five years ago, upstream of ...

However, even these remaining refuges are under threat now from an alien invader. American signal crayfish were brought over to UK in the 1970s to be farmed for the food industry. They escaped ...