By O. Jaag
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Extra info for Advances in Water Pollution Research. Proceedings of the Second International Conference Held in Tokyo, August 1964
The H + concentration was measured by 0 20 Avoidance 40 60 frequency 80 100 in % FIG. 4. Relationships between pH values and avoidance frequency. 1—minnow, Moroco steindachneri. 2—carp, Cyorinus carpio. 3—wild goldfish, Caras sius auratus. 4—goldfish C. auratus. 5—-bitterling, Acheilognathus limbata and 6—dace, Tribolodon hakonensis. Behavior of Fish Exposed to Toxic Substances 25 a glass electrode pH meter. The observation of fish behavior was continued for 4-6 hr in each test. In order to indicate the fish behavior in H+ gradients, the relation between pH values and cumulative percentage of avoidance frequency is presented in FIG.
Molal) 4 100% Discrim. ) 50% 4 0% 117-5 K H 2 C0 3 Toxicant Molar avoidance concentration C with avoidance frequency F of LOWEST LETHAL CONCENTRATIONS AND MEDIAN AVOIDANCE CONCENTRATIONS REACTION TESTS OF FISH EXPOSED TO VARIOUS TOXICANTS, INCLUDING LOWEST LETHAL CONCENTRATIONS AND RATIO BETWEEN TABLE 1. N) Behavior of Fish Exposed to Toxic Substances SHINYA ISHIO 28 natory sensitivities in relation to the variations of environmental concentrations of various toxicants. Those values are given in TABLE 1.
2. Response curves of 3 subgroups of the halophilic organisms to high concentration of sodium chloride. (R. SAKAZAKI, S. IWANAMI and H. ) Modern Microbiological and Virological Aspects of Water Pollution 13 patients was distributed widely in coastal sea water and sea fish, especially during the spring, summer and autumn. From extensive studies of enteropathogenic halophilic bacteria, R. SAKAZAKI and his co-workers of NIH of Japan (1963) reported that this species could be divided into 3 subgroups on the basis of growth in peptone water containing 7 and 10 per cent NaCl, Voges-Proskauer reaction, and sucrose and arabinose fermentation.
Advances in Water Pollution Research. Proceedings of the Second International Conference Held in Tokyo, August 1964 by O. Jaag