showed a trendp = 0.022
Ditch and river snails showed a trend towards a greater proportional decrease in breathing attempts compared to laboratory snails (ANOVA: habitat: F 2,4.68 = 9.644, p = 0.022, ), but pair-wise differences were not significant among treatment groups (Sidak: p > 0.50 for all pair-wise comparisons; electronic supplementary material text: Intermediate-term memory).