Two-way ANOVA for each detection parameter measured
| Variable . | d.f. . | ms . | F . | P . | ||||
|---|---|---|---|---|---|---|---|---|
| Yforward | ||||||||
| Intercept | 1 | 1344.261 | 395.9377 | <0.001 | ||||
| Speed | 2 | 4.507 | 1.3276 | >0.1 | ||||
| Darkening | 1 | 67.136 | 19.7743 | <0.001 | ||||
| Speed×darkening | 2 | 10.230 | 3.0130 | >0.05 | ||||
| Error | 73 | 3.395 | — | — | ||||
| Dtotal | ||||||||
| Intercept | 1 | 1660.845 | 478.6935 | <0.001 | ||||
| Speed | 2 | 6.166 | 1.7771 | >0.05 | ||||
| Darkening | 1 | 91.503 | 26.3732 | <0.001 | ||||
| Speed×darkening | 2 | 7.622 | 2.1970 | >0.05 | ||||
| Error | 73 | 3.470 | — | — | ||||
| Zvertical | ||||||||
| Intercept | 1 | 52.27299 | 80.65771 | <0.001 | ||||
| Speed | 2 | 0.25464 | 0.39291 | >0.5 | ||||
| Darkening | 1 | 4.44736 | 6.86232 | 0.0107 | ||||
| Speed×darkening | 2 | 0.18578 | 0.28666 | >0.5 | ||||
| Error | 73 | 0.64808 | — | — | ||||
| Xlateral | ||||||||
| Intercept | 1 | 225.2176 | 196.5117 | <0.001 | ||||
| Speed | 2 | 2.7245 | 2.3772 | >0.05 | ||||
| Darkening | 1 | 33.8909 | 29.5713 | <0.001 | ||||
| Speed×darkening | 2 | 0.0443 | 0.0386 | >0.5 | ||||
| Error | 73 | 1.1461 | — | — | ||||
| α, angle between particle and fish's axis | ||||||||
| Intercept | 1 | 40243.82 | 196.0764 | <0.001 | ||||
| Speed | 2 | 104.49 | 0.5091 | >0.5 | ||||
| Darkening | 1 | 632.13 | 3.0799 | >0.05 | ||||
| Speed×darkening | 2 | 714.95 | 3.4834 | 0.036 | ||||
| Error | 73 | 205.25 | — | — | ||||
| ω, angular velocity | ||||||||
| Intercept | 1 | 145.0043 | 79.5432 | <0.001 | ||||
| Speed | 2 | 21.8438 | 11.9825 | <0.001 | ||||
| Darkening | 1 | 12.5417 | 6.8798 | 0.0106 | ||||
| Speed×darkening | 2 | 7.5108 | 4.1201 | 0.020 | ||||
| Error | 73 | 1.8230 | — | — | ||||
| λ, loom | ||||||||
| Intercept | 1 | 0.1352 | 160.3226 | <0.001 | ||||
| Speed | 2 | 0.0095 | 11.3796 | <0.001 | ||||
| Darkening | 1 | 0.0910 | 22.5987 | <0.001 | ||||
| Speed×darkening | 2 | 0.0058 | 6.9095 | <0.005 | ||||
| Error | 73 | 0.0008 | — | — | ||||
| β, angular size | ||||||||
| Intercept | 1 | 0.0136 | 261.5416 | <0.001 | ||||
| Speed | 2 | 0.0001 | 2.2211 | >0.1 | ||||
| Darkening | 1 | 0.0002 | 4.7532 | 0.032 | ||||
| Speed×darkening | 2 | 0.0001 | 1.9541 | >0.1 | ||||
| Error | 73 | 0.00005 | — | — | ||||
| Variable . | d.f. . | ms . | F . | P . | ||||
|---|---|---|---|---|---|---|---|---|
| Yforward | ||||||||
| Intercept | 1 | 1344.261 | 395.9377 | <0.001 | ||||
| Speed | 2 | 4.507 | 1.3276 | >0.1 | ||||
| Darkening | 1 | 67.136 | 19.7743 | <0.001 | ||||
| Speed×darkening | 2 | 10.230 | 3.0130 | >0.05 | ||||
| Error | 73 | 3.395 | — | — | ||||
| Dtotal | ||||||||
| Intercept | 1 | 1660.845 | 478.6935 | <0.001 | ||||
| Speed | 2 | 6.166 | 1.7771 | >0.05 | ||||
| Darkening | 1 | 91.503 | 26.3732 | <0.001 | ||||
| Speed×darkening | 2 | 7.622 | 2.1970 | >0.05 | ||||
| Error | 73 | 3.470 | — | — | ||||
| Zvertical | ||||||||
| Intercept | 1 | 52.27299 | 80.65771 | <0.001 | ||||
| Speed | 2 | 0.25464 | 0.39291 | >0.5 | ||||
| Darkening | 1 | 4.44736 | 6.86232 | 0.0107 | ||||
| Speed×darkening | 2 | 0.18578 | 0.28666 | >0.5 | ||||
| Error | 73 | 0.64808 | — | — | ||||
| Xlateral | ||||||||
| Intercept | 1 | 225.2176 | 196.5117 | <0.001 | ||||
| Speed | 2 | 2.7245 | 2.3772 | >0.05 | ||||
| Darkening | 1 | 33.8909 | 29.5713 | <0.001 | ||||
| Speed×darkening | 2 | 0.0443 | 0.0386 | >0.5 | ||||
| Error | 73 | 1.1461 | — | — | ||||
| α, angle between particle and fish's axis | ||||||||
| Intercept | 1 | 40243.82 | 196.0764 | <0.001 | ||||
| Speed | 2 | 104.49 | 0.5091 | >0.5 | ||||
| Darkening | 1 | 632.13 | 3.0799 | >0.05 | ||||
| Speed×darkening | 2 | 714.95 | 3.4834 | 0.036 | ||||
| Error | 73 | 205.25 | — | — | ||||
| ω, angular velocity | ||||||||
| Intercept | 1 | 145.0043 | 79.5432 | <0.001 | ||||
| Speed | 2 | 21.8438 | 11.9825 | <0.001 | ||||
| Darkening | 1 | 12.5417 | 6.8798 | 0.0106 | ||||
| Speed×darkening | 2 | 7.5108 | 4.1201 | 0.020 | ||||
| Error | 73 | 1.8230 | — | — | ||||
| λ, loom | ||||||||
| Intercept | 1 | 0.1352 | 160.3226 | <0.001 | ||||
| Speed | 2 | 0.0095 | 11.3796 | <0.001 | ||||
| Darkening | 1 | 0.0910 | 22.5987 | <0.001 | ||||
| Speed×darkening | 2 | 0.0058 | 6.9095 | <0.005 | ||||
| Error | 73 | 0.0008 | — | — | ||||
| β, angular size | ||||||||
| Intercept | 1 | 0.0136 | 261.5416 | <0.001 | ||||
| Speed | 2 | 0.0001 | 2.2211 | >0.1 | ||||
| Darkening | 1 | 0.0002 | 4.7532 | 0.032 | ||||
| Speed×darkening | 2 | 0.0001 | 1.9541 | >0.1 | ||||
| Error | 73 | 0.00005 | — | — | ||||
Significant results according to the sequential Bonferroni method(Rice, 1989) are in bold.—, not determined.