marginally significantP =0.052
Pairwise comparisons without P -value adjustment showed significant differences between no-magnet control and head treatments ( t =2.642, P =0.012) and between head and posterior carapace treatments ( t =−2.161, P =0.036), as well as a marginally significant difference between head and mid-carapace treatments ( t =−2.004, P =0.052), all in keeping with the hypothesis that magnetoreceptors are in the head.