Fig. 4. Distribution of behavioural categories throughout a lethal heat shock applied to Lucky Strike M. fortunata shrimps (20 individuals), at in situ pressure (17 MPa, exp. 6). Squares, total movement, i.e. C2+C3=20–C1; circles, moving more than body length, i.e. C3; triangles, loss of equilibrium, i.e. C4; solid bold line, temperature (°C). For an explanation of the behavioural categories, see Table 1.