Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii)

Figure 3

Clupea pallasii. Ichthyophonus infection prevalence in groups of Pacific herring held at three temperatures. Data are means of arcsine transformed data from 3 replicate tanks; error bars are one SD above and below the mean. Mean temperatures were 9.3°C, 12.0°C, and 15.3°C for low, ambient, and high treatments, respectively. Prechallenge fast lasted 56 days, after which fish were inoculated with Ichthyophonus, separated to treatments, and fed to satiation daily. ANOVA and Tukey test for multiple comparisons indicates that high-temperature treatment and continuously fed treatments are significantly different from low-temperature treatment.