Scatterplot of the measured individuals in the space defined by two canonical discriminant functions. (A) Measurement of rotifer characterization. (B) Scatter-plot analysis of measured characters. The functions were retrieved from discriminant stepwise analyses of several lorica measurements of individuals belonging to two putative Brachionus spp. and 12 clones. We modified the method of Fu et al. (1991) according to Ciros-Pérez et al. (2001).