Influence of sediment characteristics on shrimp physiology: pH as principal effect
Influence of sediment characteristics on shrimp physiology: pH as principal effect
复制标题
DOI：
10.1016/j.aquaculture.2004.07.001
复制
发表时间：
2004-10
期刊：
影响因子：
4.5
通讯作者：
Hugues Lemonnier;E. Bernard;E. Boglio;C. Goarant;J. Cochard
中科院分区：
文献类型：
--
作者：
Hugues Lemonnier;E. Bernard;E. Boglio;C. Goarant;J. Cochard
在土池中饲养的对虾暴露在沉积物中，在某些情况下，沉积物会引起压力。在海水中，调节能力（hyporegulation）是一个有用的工具，比较暴露于各种应激源的虾的生理状况。通过保持一些虾在笼子里在不同位置的一个单一的池塘异质沉积物质量方面，它是可能的，使用渗透压（OP），以确定一些位置的应力是最大的和其他一些地方，它是最小的。同时，还采集沉积物样本进行分析，以评估可能与在笼中养虾中观察到的应激有关的一些理化参数。这种方法允许显示沉积物表面的pH值和虾渗透压之间的显着正相关。这一结果在70升实验罐中进行的一项研究中得到了证实，当水的pH值从7.0降至6.5时，渗透压显著降低。本研究所发展之方法，对于评估养殖场底质所造成之压力，可能有一定之参考价值。
Penaeid shrimp reared in earthen ponds are exposed to sediment, which can, in some instances, induce a stress. In seawater, the osmoregulatory capacity (hyporegulation) is a useful tool to compare the physiological condition of shrimp exposed to various stressors. By keeping some shrimp in cages at different locations of a single pond heterogeneous in terms of sediment quality, it was possible, using osmotic pressure (OP), to identify some locations where the stress was maximum and some others where it was minimum. Simultaneously, sediment samples were taken and analysed in order to evaluate some physico-chemical parameters that could be related to the stress observed in the shrimps kept in the cages. This approach allowed to show a significant positive correlation between the pH of the sediment surface and the shrimp osmotic pressure. This result was confirmed in a study carried out in experimental 70-l tanks, where osmotic pressure decreased significantly as water pH decreased from 7.0 to 6.5. The methodology developed in this study may be useful to evaluate the stress caused by sediment in shrimp farms.