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Fig. 1. Experiment 1. Effect of the bilateral selective removal of the lateral
guard setae (GS) and the following bilateral selective removal of the
asymmetric setae (AS) on the mean wipe rate of the antennules after
stimulation with 3 ml of 0.5 mmol l–1 L-glutamate.
Wipe rate values are means ± S.E.M. of N=8
experimental animals (Panulirus argus) over the 9 trials of an
experimental 3-day block; experimental days are numbered chronologically. Note
that selective removal of lateral GS does not cause a decrease in the mean
wipe rate (Days 07–09) compared to the mean wipe rate measured in the
unoperated animals in the initial 3-day block (Days 01–03). Note further
the almost total loss of antennular wiping after selective removal of the AS
(Days 11–13) and the small but constant functional recovery of wiping
after longer time periods (Days 35–37, Days 49–51, Days
56–58). ANOVA shows an overall statistically significant difference
between the columns (P<0.0001). Pair-wise comparisons by
Newman–Keuls post tests between the means of the 3-day blocks
reveal no significant difference between the pre-ablation (Days 01–03)
and the post-GS-ablation (Days 07–09) blocks (P>0.05),
whereas the post-AS-ablation block (Days 11–13) differs significantly
(P<0.001) from the pre-AS-ablation block (Days 07–09) and
from the retest blocks following after longer time periods (P<0.05
for all three blocks). Wipe rates of all 3-day blocks (means ±
S.E.M.): Days 01–03, 13.3±2.6; Days 07–09,
16.4±1.5; Days 11–13, 0.5±0.2; Days 35–37,
2.6±0.7; Days 49–51, 2.3±0.6; Days 56–58,
3.8±0.8.
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