<p>The objective of this study was to evaluate the tolerance of piavas (<em>Leporinus obtusidens</em>) to ammonia (NH3) by measuring its effects on plasma ion levels and tissue metabolic parameters. Piava juveniles (25-30 g) were exposed to five concentrations of NH3 (mg L-1): 0.003 (control), 0.1, 0.4, 0.7, and 1.4; after 96 hours, plasma levels of Na+, K+, Cl- and NH4+ ions and metabolic and enzyme activity in tissues (liver, kidneys, gills and muscle) were measured. The lethal concentration (LC50; 96h) of NH3 was 0.27 mg L-1. As NH3 increased, Na+ and NH4+ in the plasma increased and K+ decreased. In addition, Na+/K+- ATPase activity concomitantly increased in the gills and decreased in the kidneys. Glucose, glycogen, and protein levels ...
The effect of ammonia on aquatic organisms is an area that has been well studied. Results from vari...
For the first time in a marine teleost (the long-horned sculpin; Myoxocephalus octodecimspinosus), t...
Acutely toxic concentrations (LC\(_{50}\)) of ammonia and nitrite were estimated for juvenile silver...
Acute ammonia toxicity in rainbow trout was studied. This was carried out by injecting fish with var...
Not AvailableAmmonia is a factor restricting production in aquaculture systems, hindering fish produ...
Tilapia is one of the most widely cultivated cichlid species in the world. GIFT (Genetically Improve...
The acute toxicity of ammonia to barramundi Lates calcarifer larvae (15 days post-hatching, DPH) was...
This study evaluated the median lethal concentra-tion values (LC50) and the histopathological effect...
Body ammonia content of rainbow trout alevins was about 0.6mmolg21 but increased to 4mmolg21 after 2...
Juvenile turbot (Scophthalmus maximus) were exposed periodically and chronically to different levels...
The present study was conducted to estimate the acute toxicity of unionized ammonia–nitrogen (NH3–N)...
A number of studies have revealed ammonia to be toxic to aquatic organisms; however, little is known...
Long-term effects of constant exogenous ammonia concentrations were investigated in two different ba...
We investigated the interactive effect of ammonia toxicity, salinity challenge and nutritional statu...
The present study evaluated stress indicators in pacu exposed to ammonia in water under the followin...
The effect of ammonia on aquatic organisms is an area that has been well studied. Results from vari...
For the first time in a marine teleost (the long-horned sculpin; Myoxocephalus octodecimspinosus), t...
Acutely toxic concentrations (LC\(_{50}\)) of ammonia and nitrite were estimated for juvenile silver...
Acute ammonia toxicity in rainbow trout was studied. This was carried out by injecting fish with var...
Not AvailableAmmonia is a factor restricting production in aquaculture systems, hindering fish produ...
Tilapia is one of the most widely cultivated cichlid species in the world. GIFT (Genetically Improve...
The acute toxicity of ammonia to barramundi Lates calcarifer larvae (15 days post-hatching, DPH) was...
This study evaluated the median lethal concentra-tion values (LC50) and the histopathological effect...
Body ammonia content of rainbow trout alevins was about 0.6mmolg21 but increased to 4mmolg21 after 2...
Juvenile turbot (Scophthalmus maximus) were exposed periodically and chronically to different levels...
The present study was conducted to estimate the acute toxicity of unionized ammonia–nitrogen (NH3–N)...
A number of studies have revealed ammonia to be toxic to aquatic organisms; however, little is known...
Long-term effects of constant exogenous ammonia concentrations were investigated in two different ba...
We investigated the interactive effect of ammonia toxicity, salinity challenge and nutritional statu...
The present study evaluated stress indicators in pacu exposed to ammonia in water under the followin...
The effect of ammonia on aquatic organisms is an area that has been well studied. Results from vari...
For the first time in a marine teleost (the long-horned sculpin; Myoxocephalus octodecimspinosus), t...
Acutely toxic concentrations (LC\(_{50}\)) of ammonia and nitrite were estimated for juvenile silver...