This study was conducted on Procambarus clarkii to study the effects of environmental stress, such as heavy metal (Cu2+、Zn2+、Cd2+)、NH4+-N、NO2--N、Aeromonas hydrophila, on THCs、PO、SOD、antibacterial activity、lysozyme activity、Na+-K+-ATPase and bacteria amount in the haemolymph. The results showed that:
After injection of 1.5×104 cfu/ml、1.5×106 cfu/mL A.hydrophila, Immune indexes of both GroupⅠandⅡshowed significant changes. THCs and SOD of both groups decreased first and increased later with injection time...