Efforts to document the decline of extant populations require a historical record of previous
occurrences. Natural history museums contain such information for most regions of the …

North America harbors about 390 native species of crayfishes, 75% of the world's total. In
this article, we highlight the threats posed by nonindigenous crayfishes to freshwater …

Many ecosystems of western North America have been dramatically changed by non-native
species. Here, we review ecological impacts of 56 plant, animal, fungus, and protist species …

Aggressiveness, along with foraging voracity and boldness, are key behavioral mechanisms
underlying the competitive displacement and invasion success of exotic species. However …

In a rather provocative article, Parker et al.(1999) claimed that, up to then, little scientific
attention had been placed on developing either theoretical or operational generalizations …

This paper examines the distribution, habitat relationships, and potential for spread of non‐
native signal crayfish (Pacifastacus leniusculus) in streams of the Truckee River catchment …

Superimposed on the natural distribution of freshwater crayfish is one orchestrated by
humans, mainly from deliberate introductions to satisfy demand for this food, although …

Impacts of invasive signal crayfish Pacifastacus leniusculus on native species and
ecosystems are widely recognised, but mostly through small‐scale studies and laboratory …

In the last 50 years, at least eight non-indigenous crayfish species (NICS) have been
introduced into Great Britain for a variety of purposes including aquaculture, fish markets …

Adaptations used to defend against native predators may not be effective against introduced
predators. For this reason perturbations caused by introduced species often affect the …