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. Author manuscript; available in PMC: 2023 Apr 25.
Published in final edited form as: Curr Biol. 2022 Mar 7;32(8):1675–1688.e7. doi: 10.1016/j.cub.2022.02.033

Figure 4. Territorial biting is driven by chemosensation and mechanosensation of bacteria.

Figure 4.

(A) DiO-stained amphid neurons of P. pacificus (dashed line: head silhouette).

(B) Difference in p(bite|encounter) between mock-ablated (centered at zero) and neuron-ablated P. pacificus, with adult C. elegans on a scarce bacterial patch (Wald test with Benjamini-Hochberg adjustment, nP.pacificus = 5–31, nencounters_per_P.pacificus =2–27.

(C) p(bite|encounter) with adult C. elegans on a bead patch (Wald test with single-step adjustment for Tukey contrasts, nP.pacificus = 7–13, nencounters_per_P.pacificus = 1–14).

(D, E) Timecourse of P. pacificus residence on a patch made of (D) low-density bacteria or (E) beads.

(F) Change in P. pacificus patch residence over time (Wilcoxon’s signed rank test with Benjamini–Hochberg adjustment, nP.pacificus = 11–14).

(B,C) Error bars are predicted probabilities and 95% CIs from binomial logistic regression models of data.

Other error bars are 95% bootstrap CIs.

See also Figure S4.