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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Effect of salinity on the physiology and bioenergetics of adult Chinese mitten crabs Eriocheir sinensis
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Effect of salinity on the physiology and bioenergetics of adult Chinese mitten crabs Eriocheir sinensis

机译：盐度对中华绒螯蟹中华绒螯蟹生理和生物能的影响

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摘要

Rates of physiological processes and bioenergetics of the Chinese mitten crab Eriocheir sinensis were determined during a 7-day experiment on adult males (mean wet weight 147.27 ±20.86 g) exposed to salinities of 0.5, 7 and 25. Salinity did not significantly affect food consumption rate (p>0.05). The rate of faeces production rose between salinities of 0.5 and 25 (p<0.05), whereas the rate of ammonia excretion decreased. At salinities of 7 and 25 crabs consumed 1.6 and 1.3 times more oxygen respectively than at a salinity of 0.5 (p<0.05). E sinensis was able to maintain a positive energy balance at salinities of 0.5 and 25, and the scope for growth reached 66.07 ±45.23 and 47.79 ± 31.42 J d~(-1) g~(-1) dry wt, respectively. Although the high inter-individual variability significantly influenced the obtained results, the lower metabolic expenses and higher scope for growth indicate that freshwater environments (S<7) are more "profitable" for adult of Chinese mitten crabs from a bioenergetical point of view than saline waters.
机译：通过对成年男性（平均湿重147.27±20.86 g）暴露于盐度为0.5、7和25的成年雄性动物进行为期7天的实验，确定了中华绒螯蟹中华绒螯蟹的生理过程和生物能学速率。盐度对食物消耗没有显着影响率（p> 0.05）。盐度在0.5到25之间时，粪便的产生率上升（p <0.05），而氨的排泄率下降。在7和25的盐度下，螃蟹消耗的氧气分别是0.5盐度下的1.6和1.3倍（p <0.05）。盐度为0.5和25时，中华绒螯蟹能维持正能量平衡，生长范围分别达到66.07±45.23和47.79±31.42 J d〜（-1）g〜（-1）干重。尽管个体间的高变异性极大地影响了所获得的结果，但较低的代谢费用和较高的生长范围表明，从生物能的角度来看，淡水环境（S <7）对于中华绒螯蟹成虫比生理盐水更“有利可图”水域。

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