Survival, Growth, and Reproduction: Comparison of Marbled Crayfish with Four Prominent Crayfish Invaders.

摘要: Biological invasions are increasingly recognized ecological and economic threats to biodiversity projected increase in the future. Introduced freshwater crayfish particular protruding invaders, exerting tremendous impacts on native ecosystem functioning, as exemplified by North American spiny-cheek, signal red swamp well Australian common yabby. The marbled is among most outstanding invaders due its parthenogenetic reproduction combined with early maturation high fecundity. As their introduced ranges expand, sympatric populations become more frequent. question of which species under what circumstances will dominate communities great interest conservation it can offer valuable insights for understanding prioritization management efforts. In order examine aforementioned may be successful an invader, we conducted a set independent trials evaluating survival, growth, claw injury, using single-species stocks (intraspecific interactions) mixed (interspecific vs. other since onset exogenous feeding. both single stocks, yabby grew faster than crayfish, while were superior spiny-cheek terms growth. With exception faster-growing consistently reached higher survival rate. tended negatively impair smaller counterparts greater delayed maturation, reduced Only laid eggs 14 weeks this study, earlier previously reported literature. Thus, success invasive significantly driven relatively fast growth frequent reproduction. These results shed light how interactions between unfold when expansion overlap wild, thereby contributing knowledge base complex population dynamics existing emerging species.