Fig. 5. Search duration (the time to find squid following activation) for sham control animals (group C) and eight groups of animals with specific sensory ablations of the antennules (groups 1–8). The groups are defined in Table 1 and are the same as in Fig. 3. An asterisk indicates that the search duration of the group of ablated lobsters is significantly different from that of the group of sham control lobsters (two-sample randomization test for median difference as the statistic; P lower than the critical value for a 5 % experiment-wise error rate as determined by a sequential test using the Dunn–
idák method for eight planned comparisons) (Sokal and Rohlf, 1997). An asterisk in parentheses indicates that the search duration of the group of ablated lobsters is close to being significantly different from that of the group of sham control lobsters (two-sample randomization test for median difference as the statistic; P values for group 8 and group 3 correspond respectively to 5.5 % and 7.6 % experiment-wise error rate as determined by a sequential test using the Dunn–idák method for eight planned comparisons) (Sokal and Rohlf, 1997). The horizontal dashed line indicates the maximum time (10 min) given to each activated lobster to find squid. For each group of lobsters, the median (
) and upper and lower quartiles are shown. The number of activated lobsters in groups C and 1–8 is 10, 3, 9, 8, 10, 7, 10, 10 and 9, respectively. The mean search durations were calculated only from those trials for which animals were activated to search.
