Anti-feedant assay data from publication: Winters, A.E., Green, N.F., Wilson, N.G, How, M.J., Garson, M.J., Marshall, N.J., Cheney, K.L. 2017. Stabilizing selection on individual pattern elements of aposematic signals. Proceedings of the Royal Society B. In Press. The data contained in this file was collected during bioassays measuring the antifeedant properties of chemical extracts from the nudibranch Goniobranchus splendidus to the shrimp Palaemon serenus, in aquaria at the University of Queensland. Data were entered into GraphPad Prism for analysis. The concentration at which 50% of shrimp rejected the pellets (ED50, effective-doseresponse) was calculated by interpolating a sigmoidal curve. PS - Palaemon sirens n.c. - natural concentration (used for analysis) mg - milligrams of extract