【摘要】 对人工繁育的方格星虫苗种进行为期26个月滩涂养殖试验,于繁殖季节对养殖亲体人工催产并取得成功。试验结果表明,2龄亲体适合人工催产;养殖成活率为41.60%,平均体质量增加22.29g,体质量超过20 g的2龄雌星虫为32.0%,雌雄比为1.37∶1;雌星虫最小性成熟个体质量为6.46 g,性成熟最短时间为11个月;星虫怀卵量与体质量呈正相关;生殖细胞呈周期性发育。更多还原

【Abstract】 Through the 26 months experiment on artificial-breeding fingerling culture of Sipunculus nudus in tidal flat,the broodstock was found to successfully spawn during the breeding season.The result showed that 2 year body old broodstock were suitable for artificially induced spawn.The survival rate was 41.60% and the increase average weight of 22.29 g,the proportion of female S.nudus,age of 2 years and body weight more than 20 g was 32.0%,and the female and male ratio was 1.37∶1.The minimum body weight and age of the female sexual maturity were 6.46 g and 11 months.The fecundity of S.nudus was positively correlated with weight and the germ cell had a periodic development.更多还原