多因子对墨吉明对虾氮磷代谢的影响

对不同条件下的墨吉明对虾氮磷代谢进行了相关实验。实验结果表明：温度、体质量、盐度、p H、摄食状态和光照条件都对墨吉明对虾磷、硝酸氮、亚硝酸氮和氨氮代谢影响显著。在20~30℃范围内,随温度升高,墨吉明对虾磷、亚硝酸氮、氨氮代谢率均显著升高;硝酸氮代谢率在25℃条件下最大;磷、亚硝酸氮、硝酸氮代谢率随体质量增加而减慢,氨氮代谢加快;盐度在10~30范围内,随盐度升高,磷、亚硝酸氮代谢率提高,硝酸氮、氨氮代谢率下降;p H在7.5~9.0范围内,随p H值升高,磷代谢水平明显下降,氨氮代谢率显著升高,亚硝酸氮代谢率在p H 8.5时出现最大值（0.451±0.039）μg/（g·h）;硝酸氮代谢率在p H 8.0时有最小值（1.364±0.028）μg/（g·h）;饱食状态下墨吉明对虾磷、硝酸氮、亚硝酸氮、氨氮代谢率相对于饥饿组分别提高了33.85%、68.07%、233.81%、72.22%;正常光照条件下墨吉明对虾磷、硝酸氮、亚硝酸氮、氨氮代谢率相对于遮光组分别提高了130.79%、37.58%、120.23%、103.93%。

Effects of Several Factors on Nitrogen and Phosphorus Metabolism in Penaeus merguiensis

The experiment determined the metabolic rates of nitrogen and phosphorus on Penaeus merguiensis under different conditions. The results show that temperature, weight, salinity, p H, feeding and light can effect metabolic rates of nitrogen and phosphorus of P. merguiensis. In the range of 20-30 ℃, as the temperature rose, the metabolic rates of phosphorus, ammonia and nitrite nitrogen increased, nitrate nitrogen reached the maximum when temperatuer was 25 ℃. The metabolic rates of phosphorus, nitrite nitrogen decreased, and ammonia decreased, as the weight of P. merguiensis increased. In the range of 10-30, as the salinity increased, the metabolic rates of phosphorus and nitrite nitrogen increased, the metabolic rates of am-monia and nitrate nitrogen decreased. As the p H rose, the metabolic rates of phosphorus significantly de-creased, and ammonia decreased, when p H was 8.5, the metabolic rates of nitrite nitrogen reached maximum（0.451±0.039） μg/（g·h）, when p H was 8.0, the metabolic rates of nitrate nitrogen reached minimum（1.364±0.028）μg/（g·h）. The metabolic rates of phosphorus, nitrate nitrogen, nitrite nitrogen and ammonia increased 33.85%,68.07%, 233.81%, 72.22% in the condition of feeding formula foodstuff. The metabolic rates of phosphorus,nitrate nitrogen, nitrite nitrogen and ammonia increased 130.79%, 37.58%, 120.23%,103.93% in the condition of sunshine.