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Figure 4


Fig. 4. Temperature compensation of resting heart rate (RHR; beats min–1). t, M. trossulus; g, M. galloprovincialis; e, M. edulis. Symbols connected by solid lines are observed RHR values averaged across salinity treatments. Symbols connected by broken lines are observed RHRs at 14°C and expected RHRs at 21°C, using the species-specific Q10 estimate and assuming no physiological compensation. If there was complete temperature compensation, there would be no difference between the observed values for 14°C- and 21°C-acclimated animals (symbols connected by a horizontal line; not shown). However, the observed RHR at 21°C is lower than expected for all species, indicating partial compensation with acclimation temperature.





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