田洪林^1,2, 曹 亮^1,3, 刘金虎^1,3, 窦硕增^1,2,3
1.中国科学院 海洋研究所 中国科学院海洋生态与环境科学重点实验室;2.中国科学院大学;3.青岛海洋科学与技术国家实验室 海洋生态与环境科学功能实验室

摘要:
作者采用动态实验法与静态实验法相结合的方法, 研究了三门湾脊尾白虾(Exopalaemon carinicauda)、口虾蛄(Oratosquilla oratoria)和日本蟳(Charybdis japonica)在不同季节的基础水温即驯化水温(8～29℃)和温升速率(0.5～15.0℃/h)下的热耐受能力。结果表明, 驯化水温和温升速率对各实验动物的热耐受性均有显著影响。实验动物的热耐受性与驯化水温总体上呈显著正相关, 而温升速率对热耐受性的影响具有物种特异性, 并受驯化水温制约; 在不同驯化水温下, 各实验动物的热耐受性随温升速率增大呈不同变化趋势。各实验动物的24 h高起始致死温度受驯化水温的影响显著, 随着驯化水温从8℃升高到29℃, 脊尾白虾、日本蟳和口虾蛄的24 h UILT₅₀分别从24.2、34.6、24.9℃显著增大到35.3、37.4和34.4℃。结合3种实验动物的最大临界温度分析, 它们的热耐受能力依次为: 日本蟳>脊尾白虾>口虾蛄。研究结果可为探究三门湾水域潜在的热污染状况及其生态环境效应提供科学依据。
关键词:甲壳类热耐受性驯化水温最大临界温度24h 高起始致死温度
DOI：10.11759/hykx20180115003
分类号:
基金项目:国家基金委-山东省联合基金项目(U1606404); 国家科技重大专项(2013ZX06002001)

Impact of the acclimation temperature and warming rate on three common crustaceans in Sanmen Bay, the East China Sea
TIAN Hong-lin,CAO Liang,LIU Jin-hu,DOU Shuo-zeng
Abstract:
This study aimed to investigate the effects of the acclimation temperature (8–29℃) and warming rate (0.5–15℃/h) on the thermal tolerance of three common marine crustaceans (Exopalaemon carinicauda, Charybdis japonica, and Oratosquilla oratoria) in Sanmen Bay, the East China Sea. We measured the critical thermal maximum (CTM) and 24-hour upper incipient lethal temperature (24-h UILT₅₀) using the dynamic and static methods, respectively. The findings revealed that both the acclimation temperature and warming rate markedly affected the thermal tolerance of the experimental crustaceans. The thermal tolerance of each species increased with the increasing acclimation temperature. In addition, patterns how warming rate affected the CTM of the experimental crustaceans depended on the acclimation temperature. As the acclimation temperature increased from 8℃ to 29℃, the 24-h UILT50 of E. carinicauda, C. japonica, and O. oratoria markedly increased from 24.2℃, 34.6℃, and 24.9℃ to 35.3℃, 37.4℃, and 34.4℃, respectively. Overall, the thermal tolerance of the three experimental crustaceans revealed a ranking order of C. japonica > E. carinicauda > O. oratoria.
Key words:Crustaceansthermal toleranceacclimation temperaturecritical thermal maximum (CTM)24-hour upper incipient lethal temperature (24-h UILT₅₀)





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