A Comparison Study on Morphological Character and Serum Biochemical Parameters between Silurus lanzhouensis and Silurus asotus

In order to know the characteristics of Silurus lanzhouensis,the morphological character and serum biochemical parameters of Silurus lanzhouensis were compared with those of Silurus asotus.The results showed that the ratio of macrochaeta length to body length was significantly higher in Silurus lanzhouensis than that in Silurus asotus(P0.05).The ratio of eye diameter to whole length and the ratio of oral fissure length to body length were not significantly different between Silurus lanzhouensis and Silurus asotus.Anyhow the eye diameter of Silurus lanzhouensis was significantly lower than that of Silurus asotus(P0.05).The serum alanine aminotransferase(ALT) was significantly higher in Silurus lanzhouensis than that in Silurus asotus(P0.05).The serum calcium(Ca),phosphorus(P) and the ratio of albumin to globulin(A/G) in Silurus lanzhouensis were significantly lower than that in Silurus asotus(P0.05).There were no differences in the serum glutamic-oxaloacetic transaminase(AST),total protein(TP),albumin(ALB),globulin(GLO),urea(BUN),total cholesterol(Chol),triglyceride(TG),high density lipoprotein cholesterol(HDL-c),low density lipoprotein cholesterol(LDL-c) between Silurus lanzhouensis and Silurus asotus(P0.05).The results showed that there were certain of differences between Silurus lanzhouensis and Silurus asotus,which could be used as references for recognizing the two species and for future aquaculture and resource protection.