Context Investigating resource competition between introduced and native species is important to understand the impacts of invasive species, not only on but also with respect wider ecosystem. Within Lake Eyre Basin, there concern that feral populations tropical Cherax quadricarinatus are outcompeting basins’ crayfish temperate–subtropical destructor. Aims This study sought observe behavioural i...

In decapod crustaceans, a number of neurohormones regulating a variety of physiological processes, including reproduction, are to be found in the X-organ-sinus gland complex of the eyestalk. Bilateral eyestalk ablation was thus performed in mature males of the Australian red claw crayfish Cherax quadricarinatus with the aim of studying the role of eyestalk-borne hormones on spermatogenic activi...

Fatty acid-binding proteins (FABPs) are small cytosolic proteins, largely distributed in invertebrates and vertebrates, which accomplish uptake and intracellular transport of hydrophobic ligands such as fatty acids. Although long chain fatty acids play multiple crucial roles in cellular functions (structural, energy metabolism, regulation of gene expression), the precise functions of FABPs, esp...

The Australian red-claw crayfish (RCC) Cherax quadricarinatus (von Martens 1868) (Crustacea: Decapoda: Parastacidae) has been introduced and promoted for freshwater aquaculture in many countries including Thailand. This study i) evaluates the growth performance of RCC near-natural conditions relative to captive ii) investigates how successfully can compete with a trophically functionally analog...

Systemic acid-base balance and osmotic/ionic regulation in decapod crustaceans are in part maintained by a set of transport-related enzymes such as carbonic anhydrase (CA), Na+/K+-ATPase (NKA), H+-ATPase (HAT), Na+/K+/2Cl- cotransporter (NKCC), Na+/Cl-/HCO[Formula: see text] cotransporter (NBC), Na+/H+ exchanger (NHE), Arginine kinase (AK), Sarcoplasmic Ca+2-ATPase (SERCA) and Calreticulin (CRT...

Shell-on tails of 70 juvenile Australian red claw crayfish, Cherax quadricarinatus, were separately packaged in seven sealed plastic freezer bags (10 in each) and stored on ice (0°C) for 0, 1, 3, 5, 7, 10, and 14 days. At the end of each storage period, raw muscle homogenate from five tails (pooled) were analyzed for lipid peroxidation, proteolysis (electrophoreis), and thermal stability (diffe...

Freshwater crayfish, which are cultivated in aquaculture, economically important for food and ornamental purposes. However, relatively few studies have focused on potentially pathogenic viruses crayfish compared to penaeid shrimp. Commodity red claw (Cherax quadricarinatus; 400 10 batches) swamp (Procambarus clarkii; 40 2 imported into South Korea from Indonesia China were screened by PCR detec...