Particle shape affects selection by the appendicularian Oikopleura dioica.

Selectivity coefficients (mean Chesson’s α-index ± SE) for different bead types in the houses and guts from each of three incubation experiments with Oikopleura dioica. * indicates selectivity values that were significantly different from non-selectivity (α = 0.33, dashed line) tested using t-tests with a Bonnferoni correction of alpha level (p ≤ 0.0028) (Table 3).