Respiratory, ionoregulatory and cardiovascular responses of the yellowtail Seriola quinqueradiata to exposure to the red tide plankton Chattonella.
Respiratory, ionoregulatory and cardiovascular responses of the yellowtail Seriola quinqueradiata to exposure to the red tide plankton Chattonella.
复制标题
黄尾鰤暴露于赤潮浮游生物查托内拉的呼吸、离子调节和心血管反应。
DOI：
10.2331/suisan.56.189
复制
发表时间：
1990
影响因子：
0.4
通讯作者：
M. Ozaki
中科院分区：
文献类型：
--
作者：
A. Ishimatsu;H. Maruta;T. Tsuchiyama;M. Ozaki
为阐明赤潮生物卡通藻（Chattonella）对致黄尾鱼（Seriola quinqueradiata）的致死机理，分析了鱼类在卡通藻（Chattonella）作用下的生理反应。鱼的背主动脉和鳃腔长期插管。随访呼吸、离子和心血管参数的变化，直至死亡。暴露后不久，出现严重的低氧血症，并伴有呼吸性脉压显著增加，但后者随后消退。尽管持续低氧血症，但直到死亡前不久才发生酸中毒。血浆Na+、K+、Cl-、Mg ~（2+）和Ca ~（2+）浓度均不同程度升高。血压反应各不相同的鱼，但心律失常是主要的反应。心率逐渐下降或保持不变，直到死亡前不久。鳃反射频率在大部分暴露期间变化很小。这些结果进行了严格的讨论，根据以前报告的数据。
To clarify the mechanisms by which the yellowtail Seriola quinqueradiata are killed by the red tide plankton Chattonella, an analysis was made on physiological responses of the fish exposed to the plankton. Fish were chronically cannulated in the dorsal aorta and gill cavity. Changes in respiratory, ionic and cardiovascular parameters were followed until death. Soon after exposure, a severe hypoxemia developed which was accompanied by a marked increase in ventilatory pulse pressure, though the latter subsequently subsided. No acidosis occurred until shortly before death despite the persistent hypoxemia. Plasma concentrations of Na+, K+, Cl-, Mg2+, and Ca2+ were all elevated to different magnitudes. Blood pressure responses varied among fish, but arrhythmia was the predominant response. Heart rate gradually declined or remained unchanged until shortly before death. Gill ventilatory frequency changed very little during most of the exposure period. These results were critically discussed in the light of data reported previously.