The redclaw crayfish (Cherax quadricarinatus; hereafter redclaw), native to northern Australia and southern New Guinea, is among the largest freshwater decapods. It matures early considered highly prolific as females may lay over one thousand eggs in a single clutch. Despite generally preferring slow-moving streams its range, it has wide environmental tolerance, making capable of establishing p...

Abstract Trophic niche analysis can be used to assess ecological opportunities available alien species in areas of introduction that might aid their establishment, define functional role and inform on potential impacts. This study assessed the trophic utilized by an invasive population Australian redclaw crayfish, Cherax quadricarinatus , Inkomati River Basin, South Africa. It evaluated hypothe...

The optimal formula for calculating the total number of hemocytes (HTN) Australian red-claw crayfish (Cherax quadricarinatus) has been established, which allows optimizing time counting HTN without re-ducing accuracy. Methodical recommendations on preparing a hemolymph sample, calculation and differentiated are given. It was found out that differences in minimal when using different formulas, i...

Abstract Modern, intensified aquaculture typically involves three production phases; hatchery, nursery, and grow-out. For redclaw crayfish however, such delineation has been ill-defined. Farming of was initiated based on the putative beneficial physical biological attributes species, which suggested methods would be relatively simple. The simple approach proved to inefficient only partially eff...