EFFECTS OF EXOGENOUS HORMONES INDUCTION ON THE SPERM QUALITY OF BARFIN FLOUNDER VERASPER MOSERI
外源激素诱导对条斑星鲽(Verasper moseri) 精子质量的影响

The effects on exogenous hormones including human chorionic gonadotropin (HCG) and salmon gonadotropin releasing hormone analogue (sGnRHa) on sperm quality of male barfin flounder Verasper moseri were investigated in the present study. Results showed that exogenous hormone induction can greatly improve the sperm quality of males with milt of high viscosity, including increased milt fluidity, higher sperm motility and longer sperm life span, and these were associated with elevated serum sex steroids level. The increased expression level of sex steroid peaked at 9h post hormonal induction for both groups, which was in accordance with the sperm quality elevation. The sGnRHa induction beard better effect than that of HCG induction although there was no significant difference observed between sGnRHa and HCG induction. Results from this study can serve as useful tools in acquiring milt with high quality and could be beneficial for artificial insemination in barfin flounder culture.