Table 2. Summary of feeding behavior in wild-type and zag-1 mutants.
| Genotype | Pump Rate (pumps/min) | Duration of Procorpus contractions (ms) | Duration of Posterior Bulb Contractions (ms) | Duration of Isthmus peristalsis (ms) | % Pumps followed by Isthmus Peristalsis |
| N2a | 116±2 | 159±1 | 173±2 | n.d. | 11% |
| zag-1(hd16) b | 58±21 | 118±3 | 96±6 | n.d. | 0% |
| N2+ serotoninc | 177±39 | n.d. | n.d. | n.d. | 30% |
| zag-1(hd16)+ serotonind | 158±41 | n.d. | n.d. | n.d. | 0% |
| N2+ arecolinee | 50±16 | n.d. | n.d. | 216±22 | 100% |
| zag-1(hd16) + arecolinef | 34±4 | n.d. | n.d. | 128±22 | 100% |
a
4 N2 L1s were recorded for 35–40 s and a total of 213 pumps were analyzed.
b
4 zag-1(hd16) L1s were recorded for 35–60 s and a total of 203 pumps were analyzed.
c
4 N2 L1s were treated with 20 mM serotonin and recorded for 15–20 s each and a total of 193 pumps were analyzed.
d
5 zag-1(hd16) L1s were treated 20 mM serotonin and recorded for 12–25 s each and a total of 222 pumps were analyzed.
e
4 N2 L1s were treated with 5 mM arecoline and recorded for 28–50 s each and a total of 115 pumps were analyzed.
f
6 zag-1(hd16) L1s were treated with 5 mM arecoline and recorded for 45–60 s each and a total of 166 pumps were analyzed.