Table 1: Influence of the region on the increment in the mass per day (Δmr/day).

No stimulus Mechanical stimuli
Comparison Day 1 Day 2-10 Day 1-10 Comparison Pre MS Post
Siphon and M1 N.S. p < 0.05 p < 0.05 Siphon and M1 N.S. N.S. N.S,
M1 and M2 p < 0.05 p < 0.05 p < 0.05 M1 and M2 & Bottom p < 0.05 N.S. p < 0.05
M2 and Bottom N.S. p < 0.05 p < 0.05
Inside and Outside p < 0.05 N.S. p < 0.05

The average of the increment in the mass per day in each group was statistically compared with that in the adjacent region, by two sample t-test. No stimulus, the specimens without the mechanical stimuli; Day 1, Day 2-10, Day 1-10, the divisions of the period when the specimen put into the artificial seawater at 5˚C; Mechanical stimuli, the specimens with the mechanical stimuli; Pre, before giving the mechanical stimuli to the specimen (corresponding to Day 1); MS, at giving the mechanical stimuli; Post, after giving the mechanical stimuli (corresponding to Day 2-10).