摘要
南极磷虾是南大洋生态系统中的关键物种,具有重要的生态价值和潜在的渔业价值。近年来,随着全球二氧化碳含量增加,溶解水中二氧化碳逐渐增多造成海水酸化,进而会对南极磷虾的个体行为产生一定的影响。因此,本研究基于海上水箱试验,作者首先将采集到的南极磷虾活体转移到暂养水箱中,然后模拟海水酸度进行调节,通过采用渐变式、急变式两种不同的pH实验组对南极磷虾个体行为状态观察和记录。试验结果表明:在不同pH下,南极磷虾的适宜耐受酸度为7.3左右,南极磷虾的极限耐受酸度为6.7左右。南极磷虾对海水酸化有一定的耐受力,但适应范围有限。
As a key species of Southern Ocean ecosystem, Antarctic krill(Euphausia superba Dana) has an important ecological role and potential fishery significance. In recent years, with the increase of the global carbon dioxide content, the carbon dioxide in the dissolved water gradually increases and the seawater acidifies, and thus the individual behavior of Antarctic krill have a certain impact. Based on the sea water tank test, the authors first transferred the collected live Antarctic krill to the holding tank, and then adjusted the acidity of the seawater. By using the two different pH groups of gradual and rapid change, Behavioral state observation and recording. The results showed that at different pH the tolerable acidity of Antarctic krill was about 7.3, and the endurance tolerance of Antarctic krill was about 6.7. Antarctic krill has a certain tolerance to seawater acidification, but the scope of adaptation is limited.
引文