Upper thermal tolerance of larval Arctic lamprey (Lethenteron camtschaticum)
Upper thermal tolerance of larval Arctic lamprey (Lethenteron camtschaticum)
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DOI：
10.1007/s10228-020-00757-3
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发表时间：
2020-06-27
影响因子：
1.2
通讯作者：
Yanai, Seiji
中科院分区：
文献类型：
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作者：
Arakawa, Hiroaki;Yanai, Seiji
北极七鳃鳗（Lethenteron camtschaticum）在北方半球分布的南部界限的数量正在下降。由于全球变暖，河水温度上升可能会影响七鳃鳗幼虫的新陈代谢，限制它们的分布。采用初始致死温度（ILT）和驯化慢性暴露（ACE）方法，对10年龄北极七鳃鳗幼体的耐热上限进行了研究。根据ILT方法，培养7天的最终初始致死温度估计为29.3 oC（95%CI：28.2-30.2 oC）。根据ACE方法，在高于28 oC的温度下发生显著的生长抑制。
The population of Arctic lamprey (Lethenteron camtschaticum) is declining at the southern limit of its distribution in the Northern Hemisphere. Rising river water temperatures due to global warming may impact the metabolism of larval lamprey and limit their distribution. We evaluated the upper thermal tolerance of young-of-year larval Arctic lamprey using the incipient lethal temperature (ILT) and the acclimated chronic exposure (ACE) methods. According to the ILT method, the ultimate incipient lethal temperature for 7 days of culture was estimated to be 29.3 oC (95% CI: 28.2-30.2 oC). According to the ACE method, marked growth inhibition occurred at temperatures higher than 28 oC.