大海马幼苗人工养殖条件的研究

摘要

研究了在人工养殖条件下,大海马幼苗在不同的温度、盐度、光照强度和放养密度下的生长状况及其成活率.实验在室内进行,分别对每一个环境因子设置不同的梯度,每15 d测量记录1次大海马幼苗的体长和成活率,共记录4次,并做了3次重复,最后进行统计分析.结果表明,大海马幼苗生长的最适温度为28℃,水体温度在24～32℃时,其生长速率没有明显的差异;大海马幼苗较喜欢高盐度且盐度较稳定的海水环境(20以上),至60d时,盐度为30的幼苗生长速率最快,成活率也最高;阴暗的环境较适宜幼苗生长,但光照强度过低会降低其成活率;最佳的放养密度为250ind/m3.%The growth and survival rates of larval seahorses, Hippocampus kuda Bleek-er, were studied under industrial culture conditions of different temperature, salinity, light intensity, and stocking density. The results showed that the optimum temperature for the growth of the larval seahorses was 28°C , and the larval seahorses preferred high and stable salinity (a-bove 20). Till 60 days, the seahorses which were reared at a salinity of 30 grew faster and the survival rate was the highest. Low light intensity was more suitable for their growth, and the most suitable stocking density was 250 ind. /m3.