Figure 2.

Ca²⁺ transients increase in both sexes in the intestine and intestinal muscle during defecation. (A–C) %ΔF/F0 traces for the intestine in one representative hermaphrodite (A), one representative male (B), and the average of five worms for both sexes (C). (D–F) %ΔF/F0 traces for the intestinal muscle in one representative hermaphrodite (D), one representative male (E), and the average of five worms for both sexes (F). Error bars in (C) and (F) represent SD. exp, expulsion; this indicates when the hermaphrodite expelled gut contents from her rectum.