Acute toxicity of ochratoxin-A in marine water-reared sea bass (Dicentrarchus labrax L.).

The toxic effects of ochratoxin-A (OTA) on sea bass, Dicentrarchus labrax L., have not been previously documented. A flow-through bioassay test system was conducted in two series and a total 180 of adult marine-reared sea bass was used to estimate the acute oral 96 h median lethal concentration (LC(50)) value and behavioral changes of OTA.

Subacute intoxication of a deltamethrin-based preparation (Butox) 5% EC) in monosex Nile tilapia, Oreochromis niloticus L.

The monosex Nile tilapia, Oreochromis niloticus L., was exposed to subacute concentration (1.46 microg/l) of a pyrethroid insecticide, deltamethrin for 28 consecutive days.