Table 2. Comparison of the effects of elevated CO2 (440, 880 µatm) on interactions between a predator (Pseudochromis fuscus) and prey (Pomacentrus amboinensis) on 6 performance variables: (a) attack rate (b) predation rate (c) predator attack distance (d) prey reaction distance (e) ALT and (f) prey escape distance.
behavior | source of variation | df | MS | F | P | |
(a) attack rate | predator | 1 | 0.0042 | 0.143 | 0.705 | |
prey | 1 | 0.0070 | 0.238 | 0.626 | ||
predator*prey | 1 | 0.1427 | 4.845 | 0.030 | ||
error | 70 | 0.0294 | ||||
(b) predation rate | predator | 1 | 0.0049 | 0.464 | 0.829 | |
prey | 1 | 0.1459 | 1.358 | 0.247 | ||
predator*prey | 1 | 0.4387 | 4.083 | 0.020 | ||
error | 67 | 0.1074 | ||||
(c) predator attack speed | predator | 1 | 2017 | 0.213 | 0.646 | |
prey | 1 | 38512 | 4.070 | 0.048 | ||
predator*prey | 1 | 61256 | 6.474 | 0.013 | ||
error | 56 | 9462 | ||||
(d) prey reaction distance | predator | 1 | 685.5 | 0.422 | 0.519 | |
prey | 1 | 8898.2 | 5.471 | 0.022 | ||
predator*prey | 1 | 16555.2 | 10.179 | 0.002 | ||
error | 56 | 1626.4 | ||||
(e) ALT | predator | 1 | 228 | 0.011 | 0.916 | |
prey | 1 | 12548 | 0.616 | 0.435 | ||
predator*prey | 1 | 313294 | 15.396 | <0.001 | ||
error | 54 | 20349 | ||||
(f) prey escape distance | predator | 1 | 57241 | 6.365 | 0.014 | |
prey | 1 | 40388 | 4.491 | 0.038 | ||
predator*prey | 1 | 69008 | 7.674 | 0.007 | ||
error | 56 | 0.4445 |