water temperature on growth and lipid metabolism in chinese mandarin fish

The results showed that female S. chuatsi grew faster than that of male at 28℃; at 35℃, the growth of both male and female S. chuatsi was significantly higher than that of 28℃, with males growing faster than females, indicating a sex-dependent growth shift under high temperature; the growth was seriously inhibited at 36℃, identifying this as the critical temperature for normal survival.

Hepatic lipid droplet number and triglyceride (TG) content in both male and female showed an overall trend of first increasing and then decreasing with temperature, while male S. chuatsi upregulated hepatic genes related to insulin, gluconeogenesis at 35℃. the SOD activities of male and female Siniperca chuatsi were reversed, with female SOD decreased, whereas male SOD increased significantly; hsp70, hsp90, ucp2, sod and cat genes in the liver of female S. chuatsi upregulated at 35℃, while male livers showed consistent expression with females except for significantly elevated sod.