Effect of Chattonella exposure on acid-base status of the yellowtail
Effect of Chattonella exposure on acid-base status of the yellowtail
复制标题
接触查托氏菌对鰤鱼酸碱状态的影响
DOI：
10.2331/suisan.57.2115
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发表时间：
1991
影响因子：
0.4
通讯作者：
T. Oda
中科院分区：
文献类型：
--
作者：
A. Ishimatsu;T. Tsuchiyama;Makoto Yoshida;M. Sameshima;M. Pawluk;T. Oda
的酸-碱状态的黄尾Seriola quinqueradiata的查顿氏菌暴露的影响进行了分析，以评估这种浮游生物物种的鱼类死亡的假设机制的有效性。基于发现鳃碳酸酐酶在暴露于查顿氏菌的鱼中失活，假设这种失活导致某些生理疾病，如血液pH值和Po 2降低。本研究中测量的酸碱变量（动脉血pH值（pHe）、红细胞胞内pH值（pHi）、Pco 2（Paco 2）和血浆总CO2（Taco 2 p））在暴露开始后均与其对照值无显著差异，但pHi有所升高。只有终末血样显示pHe和pHi急剧下降，Paco 2升高。与此相反，动脉PO 2迅速下降后，浮游生物暴露的发病。总体而言，这些结果不支持上述假设。
The effect of Chattonella exposure on the acid-base status of the yellowtail Seriola quinqueradiata was analyzed to assess the validity of the hypothesized mechanism of fish kill by this plankton species. Based on the finding that gill carbonic anhydrase was inactivated in fish exposed to Chattonella, it was hypothesized that this inactivation resulted in certain physiological disorders such as decreases in blood pH and Po2. None of the acid-base variables measured in this study (arterial blood pH (pHe), red blood cell intracellular pH (pHi), Pco2 (Paco2), and total CO2 of plasma (Taco2p)) varied substantially from their control values after the onset of exposure except for some increases in pHi. It was only the terminal blood samples that demonstrated sharp decreases in pHe and pHi and elevation of Paco2. In contrast, arterial Po2 decreased rapidly after the onset of plankton exposure. Overall these results do not support the above hypothesis.