Abstract This study aims to determine the organoletic and chemical characteristics of freshwater crayfish carapace flour. The treatment was drying in an oven at a temperature 80°C for 24 hours. parameters analyzed were amount yield, organoleptic value proximate value. Based on results study, yield 92.45%. is based percentage consumer acceptance test that likes color 98.25%, taste 95%, aroma 90%...

Members of the insulin family of hormones are generally not regarded as gender-specific, although there is sporadic evidence for the possible involvement of insulin pathways in sexual differentiation. In crustaceans, sexual differentiation is controlled by the androgenic gland (AG), an organ unique to males. To date, attempts to identify active AG factors in decapods through either classical pu...

The lesser Antilles archipelago in the Caribbean is known as a biodiversity hotspot, hosting many endemic species. However, recent introduction of highly invasive species, Australian redclaw crayfish (Cherax quadricarinatus), has led to significant threats this fragile ecosystem. Here we developed, validated, and optimized species-specific eDNA-based detection protocol targeting 16S region mito...

The survival of the tropical crayfish Cherax quadricarinatus in earthen ponds under ambient winter temperatures was studied in the temperate zone in the central coastal plain of Israel. Four treatment groups in which sex and size were each tested at two levels were simultaneously run in Ž . four replicates over a period of 118 days 28 November 1996–26 March 1997 . Minimum and maximum water temp...

We measured the level of heavy metal accumulation in lake sediments, herbivorous (Oreochromis niloticus) and carnivorous (Serranochromis thumbergi) fish, and crayfish (Cherax quadricarinatus) from Lake Itezhi-tezhi (ITT) and Lake Kariba. We used atomic absorption spectrophotometry to quantify the levels of seven heavy metals (Cr, Co, Cu, Zn, Cd, Pb, and Ni). The sediment and the herbivorous fis...

Gastroliths, the calcium storage organs of crustaceans, consist of chitin-protein-mineral complexes in which the mineral component is stabilized amorphous calcium carbonate. To date, only three proteins, GAP 65, gastrolith matrix protein (GAMP), and orchestin, have been identified in gastroliths. Here, we report a novel protein, GAP 10, isolated from the gastrolith of the crayfish Cherax quadri...