- 著者
-
尾形 英二
- 出版者
- The Japanese Society of Fisheries Science
- 雑誌
- 日本水産学会誌 (ISSN:00215392)
- 巻号頁・発行日
- vol.22, no.2, pp.99-103, 1956
- 被引用文献数
-
1
It was found, as reported in the pr vious paper, that the gradations in the reduction of TTC by filament reflected sharply the intact, injured and dead states.<br> Limits of viability of filaments under various deleterious conditions were determined by using TTC as indicator.<br> The results are summarized as fo1lows:<br> 1) Injurious effect of 10<sup>-4</sup>M. copper sulfate in sea water becomes manifest within 1 day, 10<sup>-6</sup>M. after 3 days, and 10<sup>-8</sup>M. after 5 days;<br> 2) The critical temperature of causing damage after 24 hours of incubation is found at 30° to 32°C.;<br> 3) Injury becomes apparent after 3 hours of desiccation at 66% relative humidity, and within 1 to 2 hours at 10%, respectively;<br> 4) By the ultraviolet irradiation (quartz mercury sterilizing lamp), severe injury occurs after 30 minutes, and complete killing after an hour.<br> Further research in extended application of the TTC test method to other useful algae is in progress.