Zebrafish (Brachydanio rerio) were exposed to PCBs (50 μg/L) for 4 weeks. The gill and the liver morphology were examined by transmission eletron microslogy. Results indicated that the membrane and partial cytoplasm ...Zebrafish (Brachydanio rerio) were exposed to PCBs (50 μg/L) for 4 weeks. The gill and the liver morphology were examined by transmission eletron microslogy. Results indicated that the membrane and partial cytoplasm of the epithelium cell in secondary lamella collapsed with lots of mucous and cell debris lying around. Hepatic cells which exposed to PCBs for 4 weeks showed the deforming nuclear deviated from cell centre, mitochondrim collapsed and rough-surfaced endoplasmic reticulum fractured. Furthermore, there were lots of lipofuscin granule and lipid droplet in the cytoplasm of the damaged cells.展开更多
The growth and fecundity of Siniperca chuatsi and Siniperca kneri are investigated.The results show that Siniperca chuatsi grows faster than Siniperca kneri.There are curve regression relationships between the body we...The growth and fecundity of Siniperca chuatsi and Siniperca kneri are investigated.The results show that Siniperca chuatsi grows faster than Siniperca kneri.There are curve regression relationships between the body weight(m) and standard length(L) with relational expressions as follow: m=0 081 L 2.71 and m= 0 076 55 L 2.59. Siniperca chuatsi’s fecundity is bigger than that of Siniperca kneri. Siniperca chuatsi and Sniperca kneri attain maturity at two-winter-age and three-winter-age respectively.In addition,the growth equation,the growth speed and growth acceleration equation of body length and body weight are also studied.展开更多
The nutrient components in the muscle and constants of blood biochemical parameters in two group of different cultrivated mandarin fish, siniperca chuatsi, were studied in the present paper. The results show that the ...The nutrient components in the muscle and constants of blood biochemical parameters in two group of different cultrivated mandarin fish, siniperca chuatsi, were studied in the present paper. The results show that the protein contents, the total contents of amino acids and the essential amino acids are in a relatively stable scope. In blood biochemical parameters, the values of serum enzyme activities, uric acid, glucose and cholesterol’s contents are all obvious different. The study considers some biochemical parameters that may act as constants of geneticar characterization in this kind of fish.展开更多
文摘Zebrafish (Brachydanio rerio) were exposed to PCBs (50 μg/L) for 4 weeks. The gill and the liver morphology were examined by transmission eletron microslogy. Results indicated that the membrane and partial cytoplasm of the epithelium cell in secondary lamella collapsed with lots of mucous and cell debris lying around. Hepatic cells which exposed to PCBs for 4 weeks showed the deforming nuclear deviated from cell centre, mitochondrim collapsed and rough-surfaced endoplasmic reticulum fractured. Furthermore, there were lots of lipofuscin granule and lipid droplet in the cytoplasm of the damaged cells.
文摘The growth and fecundity of Siniperca chuatsi and Siniperca kneri are investigated.The results show that Siniperca chuatsi grows faster than Siniperca kneri.There are curve regression relationships between the body weight(m) and standard length(L) with relational expressions as follow: m=0 081 L 2.71 and m= 0 076 55 L 2.59. Siniperca chuatsi’s fecundity is bigger than that of Siniperca kneri. Siniperca chuatsi and Sniperca kneri attain maturity at two-winter-age and three-winter-age respectively.In addition,the growth equation,the growth speed and growth acceleration equation of body length and body weight are also studied.
文摘The nutrient components in the muscle and constants of blood biochemical parameters in two group of different cultrivated mandarin fish, siniperca chuatsi, were studied in the present paper. The results show that the protein contents, the total contents of amino acids and the essential amino acids are in a relatively stable scope. In blood biochemical parameters, the values of serum enzyme activities, uric acid, glucose and cholesterol’s contents are all obvious different. The study considers some biochemical parameters that may act as constants of geneticar characterization in this kind of fish.
