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In
the mysis stage, the antennae are reduced and swimming becomes a function
of the pereiopods, with some assistance from the three pairs of
maxillipeds. In swimming the mysis body is flexed, with the head lowered;
movement is in a backward direction. In this stage, there is less tendency
for the myses to be attracted to light (Treece & Yates, 1988).
Size ranges of mysis-stage based on measurements of P. japonicus. |