Fig. 3. Endogenous levels of hsp72 in three Tegula congeners field-acclimatized (July 1997) and laboratory-acclimated to 13, 18 or 23°C for 30–34 days. Long lines indicate pairwise comparisons within species among treatments; short lines indicate comparisons within treatments among species. Ref. refers to the group with which all other groups along a line are compared. **P<0.05; NS, not significant. Values are means +1 S.E.M. (N=5 for all data points except for T. brunnea at 18°C, for which N=4).
