Ectonucleotidase and acetylcholinesterase activities in silver catfish (Rhamdia quelen) exposed to different salinities

In conclusion, this study showed that there is an enhancement in the NTPDase (ADP hydrolysis) and 5′-nucleotidase activities in the brains of silver catfish exposed to increased salinity. Therefore, the activities of these enzymes can act as markers of salinity changes. Highlights ► Silver catfish were gradually adapted to salinities of 0, 4 or 8 ppt. ► Blood AChE activity decreased significantly at 8 ppt. ► Brain AChE activity decreased significantly with salinity increases. ► There is an enhancement in the ADP hydrolysis in the brain of silver catfish. ► The activities of AChE and NTPDase can act as markers of salinity changes in fish.
Source: Biochemical Systematics and Ecology - Category: Biochemistry Source Type: research