アルミニウムを含む酸性水がコイの血液性状に及ぼす影響

概要

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Carp (Cyprinus carpio) (686±153 g) were exposed to acid /aluminum (pH 4.2, 0.8 ppm Al) artificial fresh water at 25℃ for 48 hours. From the same individual, 0.5 ml arterial blood was sampled at a time from the dorsal aorta through a cannula before one hour and after 48 hours of exposure. Blood pH (BpH), hematocrit value (Hct), hemoglobin (Hb), blood oxygen content (CaO2), blood oxygen partial pressure (PaO2), blood oxygen saturation (SaO2), blood total carbon dioxide (TaCO2), blood carbon dioxide partial pressure (PaCO2), total plasma protein (TPr), plasma sodium ion (Na+), plasma potassium ion (K+), plasma chloride ion (Cl-), plasma calcium ion (Ca2+), and blood moisture content (Bm) were measured immediately after blood sampling. After 48 hours of exposure, BpH, Na+, Cl-, PaO2, SaO2, and Bm decreased significantly, whereas PaCO2, Hct, Hb, TPr, and Ca2+ increased significantly. CaO2, TaCO2, and K+ were not affected by 48 hours of exposure. All fish were not died within 48 hours of exposure, however, the fish blood homeostasis was most probably negatively affected by the acid/aluminum exposure.
2009-10-31