Fig. 5

Mean percentage of time spent in a possible mating position. For each focal species (S. solidus, n = 7 or S. pungitii, n = 7) the mean percentage of time in a possible mating position (conspecific: 3, different species: −3, see Fig. 1) was calculated for each trial and the percentage of time the focal worm spent in a possible mating position with either the conspecific or the worm from a different species are shown. The red dots and dashed lines indicate the mean for each focal species. The focal worms spent significantly more time in a possible mating position with a worm from a different species than with a conspecific. The data do not add up to 100 % since time spent in positions other than the possible mating positions are not depicted for simplicity