Data from: Contrasting the form and strength of pre- and postcopulatory sexual selection in a flatworm

Sexual traits may be selected during multiple consecutive episodes of selection, occurring before, during, or after copulation. In the research article entitled "Contrasting the form and strength of pre- and postcopulatory sexual selection in a flatworm", published in Evolution, we measured pre- and postcopulatory phenotypic traits alongside variation in fitness components at different episodes. Namely, we assessed the mating success, sperm-transfer efficiency, and sperm fertilising efficiency of focal worms in which we measured 13 morphological traits, and performed multivariate selection analyses assessing the form and strength of selection. We archived the datasets and R scripts necessary to reproduce all analyses performed in this paper.