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Fig. 2. Oxygen consumption (µmol min1 g1
embryonic body dry mass) in chorionated (chorion intact) and dechorionated
(chorion removed) rainbow trout embryos 3 days before hatch to 3 days after
hatch. Embryonic body dry mass is the dry mass of the embryo only, separated
from the yolk. Negative numbers indicate days before hatch and, time 0
indicates when hatching started (hatching did not necessarily occur in the
respirometer) and positive numbers indicate days post-hatch. Values are means
± s.e.m. (N=9).