Time dependency of upper thermal limits in Atlantic herring larvae.

<p>Values for upper thermal limit (<i>UTL</i>, °C) including both <i>LT50</i>_max and <i>CT</i>_<i>max</i> estimates (see text) versus exposure time (<i>t</i>, h) beyond temperatures favorable for growth (>18°C). The <i>LT</i>_<i>max</i> and <i>CT</i>_<i>max</i> estimates for yolk-sac (YS), and feeding larvae (F) at two temperatures (7 and 13°C) are also shown. For the <i>LT50</i>_<i>max</i> data of YS larvae, the best fit regression equation (solid line) is <i>UTL</i> = 26.55(± 0.16 SE)—1.31(±0.08 SE) * Ln(<i>t</i>), (p<0.001), 95% CI of the curve are included as a dotted line.