【摘要】 在深水网箱、传统小网箱和室内水泥池三种培育方式下,采用埋植外源激素的方法诱导赤点石斑鱼提前完成性转化,获得功能性雄鱼,并用所得雄鱼和人工驯化培育而成的雌鱼进行了亲鱼培育、产卵和孵化试验研究。结果表明:雌鱼性腺成熟以深水网箱培育为最好,室内水泥池培育次之,传统小网箱培育最差;转性效果深水网箱与室内水泥池培育相差无几,转性率分别为97.0%和94.6%,传统小网箱较差,转性率仅65.9%;自然雄鱼以深水网箱为最多。其中,2004年共获得亲鱼246 ind,施行转性手术100 ind,转性率达87.9%,先后获受精卵230.5×104粒,平均受精率22.4%,孵出仔鱼80×104ind,平均孵化率34.7%。更多还原

【Abstract】 Female Epinephelus akaara cultured with three different methods were induced to sex reversal and changed into functional male through the technique of exterior hormone embedding.These male Epinephelus akaara,together with cultivated female were used in artificial breeding experiment.The results of the experiment demonstrated that in three culturing methods employed,the culture of submersible offshore cage had the best effect on female gonad development,with that of indoor cement pool ranked the second and traditional cage the third.In term of the effect of sex reversal,submersible offshore cage and indoor cement pool culturing had no significant differences,with sex reversal rates of 97.0% and 94.6% respectively,while traditional cage culturing was less effective with a sex reversal rate of 65.9%.In 2004,there were 246 broodstocks captured,of which 100 were used in sex reversal inducing.The sex reversal rate was 87.9%.A total of 2305000 eggs were successfully fertilized,and about 800000 larvae were obtained in this experiment.The average fertilizing rate and hatching rate were 22.4% and 34.7%,respectively.更多还原