Fig. 5

An antibiotic-induced disturbance affects venting behavior of crypt 3 (C3). A Schematic of experimental design examining symbiotic squid, colonized by either Vf Cm^S or Vf Cm^R, that were then incubated with 20 μM Cm for 6 h prior to sampling. B Venting efficiency scored for C3 as the proportion of the migration paths that contained V. fischeri cells, as determined by confocal microscopy. Cm treatment increased venting in C3 only for Vf Cm.^S colonized squid. Mann–Whitney U test (n = 12 lobes, 6 animals per treatment); left, difference in median = 0.25, U = 24.5, P \(<\) 0.01; right, difference in median = 0, U = 43.5, P = 0.0974