Table 2.
Results of Dunnett’s tests comparing the respiratory rate and the hiding time of unmanipulated (control; n = 15) hermit crabs to those exposed to three manipulation treatments: (i) forced to abandon their shell by heating (n = 15); (ii) removed from their shell by cracking it (n = 15); and (iii) handled by being air-exposed (n = 15)
| Pre-treated | Post-treated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| (Pre) | (Post-1) | (Post-24) | (Post-48) | ||||||
| Experimental group | t | p | t | p | t | p | t | p | |
| Respiratory rate (mg O2 h-1) | Heating | 1.06 | 0.59 | 2.91 | 0.01 | 2.54 | 0.04 | 1.28 | 0.44 |
| Cracking | 0.46 | 0.94 | 1.15 | 0.52 | 1.10 | 0.56 | 0.14 | 0.99 | |
| Handled | 0.24 | 0.99 | 0.09 | 0.99 | 0.71 | 0.82 | 0.09 | 0.99 | |
| Hiding time (s) | Heating | 0.74 | 0.80 | 0.10 | 0.99 | 0.06 | 0.99 | 1.34 | 0.40 |
| Cracking | 0.41 | 0.96 | 2.54 | 0.04 | 3.47 | 0.003 | 1.37 | 0.38 | |
| Handled | 0.03 | 0.99 | 0.19 | 0.99 | 0.50 | 0.92 | 1.56 | 0.28 | |
Since it was the reference group, values for the control group are not shown. The metabolic and behavioural responses were measured in the same individuals over time: before being treated (Pre-treated) and 1, 24, and 48 h after the treatment (Pos-1, Pos-24, and Pos-48). The t-value for each Dunnett comparison test is shown; the significant differences are shown in bold (P < 0.05).