Fig. 4. Laboratory running speed of field-collected male and female adults of three predominant PGI genotypes. Data shown are least square means (±s.e.m.) of running speed for PGI 1-1, 1-4 and 4-4 genotypes (female, N=98, 92, 20; male, N=100, 88, 29). Statistical analyses were performed using ANOVA and the results are described in the text. See Table S2 in supplemental material for analysis of other polymorphic enzyme genotypes.