| Impact Description | Experimental studies were conducted to examine agonistic interactions between signal crayfish (Pacifastacus leniusculus), common yabby (Cherax destructor), and marbled crayfish (Procambarus virginalis). The marbled crayfish was the least aggressive and least successful in agonistic interactions. However, other factors such as growth rate and reproductive potential may alter competitive interactions in favor of marbled crayfish. |