Marine Scotland, 375 Victoria Road, Aberdeen AB11 9DB, United Kingdom.
Marine Scotland, 375 Victoria Road, Aberdeen AB11 9DB, United Kingdom.
Protist. 2019 Apr;170(2):153-167. doi: 10.1016/j.protis.2018.11.003. Epub 2018 Dec 21.
Growth rates of Paramoeba perurans cultures under different temperature and salinity conditions were investigated in vitro over a 15day period. Optimal population growth, under the experimental conditions, was observed at 15°C and a salinity of 35‰, with amoebae populations doubling every 14h. Positive P. perurans populations growth was observed at 15°C between salinities of above 20‰ and 50‰, and at 8°C, 11°C and 18°C at salinities between 25‰ and 50‰, 50‰ being the maximum salinity tested. Amoebae numbers were sustained at 4°C. Therefore, lower temperature and salinity thresholds for P. perurans population growth lie between 4 to 8°C, and salinities of 20 to 25‰, respectively. Upper limits were not determined in this study. The populations remained relatively stable at 4°C and 2°C at permissive salinities with respect to numbers of viable amoebae over the 15day exposure period.
在 15 天的时间里，我们在体外研究了不同温度和盐度条件下 Perurans 变形虫培养物的生长速度。在实验条件下，最佳种群生长出现在 15°C 和 35‰盐度下，变形虫种群每 14 小时翻一番。在 15°C 时，盐度高于 20‰至 50‰之间，以及在 8°C、11°C 和 18°C 时，盐度在 25‰至 50‰之间，都观察到了阳性的 Perurans 变形虫种群生长，50‰是测试的最高盐度。变形虫数量在 4°C 时保持稳定。因此，较低的温度和盐度阈值分别为 4 到 8°C 和 20 到 25‰，用于变形虫种群的生长。在本研究中没有确定上限。在允许的盐度下，在 4°C 和 2°C 时，变形虫的种群数量相对稳定，在 15 天的暴露期内，活变形虫的数量保持相对稳定。
