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首页> 外文期刊>Fisheries Science >Effect of salinity and temperature on salinity tolerance of the sea cucumber Apostichopus japonicus
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Effect of salinity and temperature on salinity tolerance of the sea cucumber Apostichopus japonicus

机译：盐度和温度对刺参海盐耐盐性的影响

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摘要

Sea cucumber Apostichopus japonicus juveniles acclimated to different environmental conditions (23, 25, and 27°C combined with 25, 30, and 35 psu) were assessed for tolerance to increasing and decreasing levels of salinity at a rate of 2 psu h−1. They were also tested for the LS50 (median lethal salinity) when transferred directly into a series of higher salinity (32–46 psu) and lower salinity (9–25 psu). The CSMax (critical salinity maximum), CSMin (critical salinity minimum), USTL (upper salinity tolerance limit), and LSTL (lower salinity tolerance limit) were positively correlated to the acclimated salinity level but negatively correlated to temperature. The CSMax of A. japonicus was 6.2–10.0 psu higher than the USTL, and the CSMin was 5.5–8.5 psu lower than the LSTL, indicating that gradual changes in salinity resulted in the wide range of salinity tolerance that was observed, but that abrupt changes in salinity resulted in the narrow range of tolerance. Two-way analysis of variance revealed that salinity and temperature had a significant effect on 50% CSMax, 50% CSMin, USTL, and LSTL (P < 0.001). The information obtained in this study will be valuable for the further development of the sea cucumber aquaculture industry in China.
机译：评估了适应不同环境条件（23、25和27°C并结合25、30和35 psu）的海参刺槐幼鱼对盐度升高和降低的耐受性，速率为2 psu h -1 。当直接转移到一系列较高的盐度（32–46 psu）和较低的盐度（9–25 psu）中时，还测试了它们的LS 50 （中度致死盐度）。 CSMax（临界盐度最大值），CSMin（临界盐度最小值），USTL（盐度耐受性上限）和LSTL（盐度耐受性下限）与驯化盐度水平呈正相关，而与温度呈负相关。日本刺槐的CSMax比USTL高6.2–10.0 psu，CSMin比LSTL低5.5–8.5 psu，这表明盐度的逐渐变化导致所观察到的广泛的盐度耐受性，但其突然变化盐度变化导致宽容度范围狭窄。双向方差分析表明，盐度和温度对50％CSMax，50％CSMin，USTL和LSTL有显着影响（P <0.001）。这项研究获得的信息将为中国海参养殖业的进一步发展提供有价值的信息。

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