Table 2.

Number of pumps and reversals during which ten mucus strands and aggregates were either attached to arches or lifted and moved posteriorly out of the field of view during feeding in four O. aureus with intact rakers

Number of occurrences
Mucus attached to arches Mucus lifted, moved posteriorly
O. aureusO. niloticus * O. aureusO. niloticus *
Pumps41410
Reversals22155
Total63565
  • All pumps and reversals that occurred while the mucus was in the field of view are included in these counts

  • * For comparison, mean numbers of pumps and reversals per ten mucus strands and aggregates are included for O. niloticus with intact rakers (Sanderson et al., 1996)