Background Long-term biomonitoring of macroinvertebrates is a popular and valuable
approach for assessing the status of freshwater ecosystems, identifying the impact of …

Highlights•Crustaceans produce large but weak claws as dishonest signals of their
strength.•Crayfish did not use large, weak claws as signals during territorial …

Highlights•We studied traits used to escalate aggression in two species of invasive
crayfish.•Both species escalated and resolved disputes using their claws as signals.•Claw …

Crayfish have experienced extensive assemblage reorganization as a result of global
change, with some species becoming globally invasive and others becoming rare or extinct …

Invasive species have long been recognized as a serious threat to freshwater ecosystems.
This is especially true for invasive species in keystone positions in food webs that can cause …

Biological invasions are a major cause of biodiversity loss and, coupled with climate
change, will likely have detrimental impacts for native species and the functioning of …

The success of non-native species establishment depends on various abiotic and biotic
factors that determine the outcome of an introduction event. Limiting temperature ranges …

Invasive species are known to competitively displace native species via direct behavioural
interactions, or contests, which can result in limited access to valuable resources such as …

Freshwater crayfish are an ecologically important component of freshwater ecosystems. A
combination of factors, including high levels of species diversity, endemism, and limited …

We used existing collection records to summarize the current understanding of freshwater
crayfish diversity in Virginia. Virginia includes both Atlantic slope drainages and tributaries of …