For their great commercial importance as a human food delicacy, crayfish are now becoming
of wider interest to molecular biologists, and also to conservationists due to the fact that in …

Agonistic behavior is a fundamental aspect of ecological theories on resource acquisition
and sexual selection. Crustaceans are exemplary models for agonistic behavior within the …

Explaining the “prior-residence effect”(automatic owner status of individuals who arrived first
in an area) was one of the very first applications of game theory in animal behavior. These …

The native noble crayfish Astacus astacus L., and the introduced North American signal
crayfish Pacifastacus leniusculus Dana, co‐occur in Slickolampi, a small lake in southern …

Using a resident–intruder model, 24-h resident juvenile male and female red swamp
crayfish, Procambarus clarkii, were intruded upon by same or opposite sex juvenile …

Animals often compete directly with conspecifics for food resources, and fighting success
can be positively related to relative resource-holding power (RHP) and relative resource …

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

Ecosystems today increasingly suffer invasions by multiple invasive species. Complex
interactions between invasive species can have different fitness implications for each …

Crayfish are aggressive animals that compete to acquire resources such as shelters, food,
and mates. Shelters are a primary resource that crayfish use for protection from conspecifics …

The shelter defense dynamics of reproductively active (Form I) male red swamp crayfish
Procambarus clarkii (Girard) were investigated by staging serial intrusions by male, maternal …