Figure 3
(a,b) Discriminant analyses outputs cluster the already assigned three life-history strategies of Botryllus colonies according to: (a) age at maximal colony size, life span, maximal size (number of zooids) and ages at the onset of male and female gonads (days). Colony numbers: NF = 28, FA = 17, FB = 20. (b) number of segments throughout the life, length of segments (days), number of times in a segment in which the male-only state is observed and number of times in a segment in which the hermaphroditic state is observed. Colony numbers: NF = 18, FA = 13, FB = 19. (c) Impact of the first fission on sizes of colonies in FA or FB colonies. The differences in the frequencies of the outcomes (increase/decrease) between the types are significant (chi-test, chi square = 16.8, df = 1, p < 0.001). (d) Mean (± SD) change in size of FA and FB colonies (percent; y axis) in the two observations following the first fission event. The changes are relative to the number of zooids in the observation that preceded the fission event.
