Ecological Archives E096-168-A6
Kunio Takatsu and Osamu Kishida. 2015. Predator cannibalism can intensify negative impacts on heterospecific prey. Ecology 96:1597–1608. http://dx.doi.org/10.1890/14-1616.1
Appendix F. Summary of the results of post hoc statistical analyses of frog tadpole traits, comparing the four experimental treatments (i.e., large-variation, large-variation giant-removal, small-variation, and no-salamander treatments).
Summary of the results of post hoc statistical analyses of frog tadpole traits, comparing the four experimental treatments (i.e., large-variation, large-variation giant-removal, small-variation, and no-salamander treatments). Significant values are in bold (significant level was adjusted using sequential Bonfferoni methods with significant value P = 0.05).
Table F1. Post hoc Wilcoxon test results for mortality of frog tadpoles on day 19–31.
Treatment |
χ²1 |
P |
Large-variation vs. Small-variation Large-variation vs. Large-variation giant-removal Large-variation vs. No-salamander Small-variation vs. Large-variation giant-removal Small-variation vs. No-salamander Large-variation giant-removal vs. No-salamander |
21.71 |
<0.0001 |
9.11 12.20 0.35 7.24 6.34 |
0.0025 0.0005 0.55 0.0071 0.012 |
Table F2. Post hoc Wilcoxon test results for mortality of frog tadpoles on day 31–151.
Treatment |
χ²1 |
P |
Large-variation vs. Small-variation Large-variation vs. Large-variation giant-removal Large-variation vs. No-salamander Small-variation vs. Large-variation giant-removal Small-variation vs. No-salamander Large-variation giant-removal vs. No-salamander |
24.38 |
<0.0001 |
6.69 11.57 1.87 7.13 6.23 |
0.0097 0.0007 0.17 0.0076 0.013 |
Table F3. Post hoc Wilcoxon test results for size adjusted body width of the frog tadpoles on day 31.
Treatment |
χ²1 |
P |
Large-variation vs. Small-variation Large-variation vs. Large-variation giant-removal Large-variation vs. No-salamander Small-variation vs. Large-variation giant-removal Small-variation vs. No-salamander Large-variation giant-removal vs. No-salamander |
33.86 |
<0.0001 |
7.53 13.72 8.85 11.95 11.37 |
0.0061 0.0002 0.0029 0.0005 0.0007 |
Table F4. Post hoc Wilcoxon test results for mean timing of frog metamorphosis.
Treatment |
χ²1 |
P |
Large-variation vs. Small-variation Large-variation vs. Large-variation giant-removal Large-variation vs. No-salamander Small-variation vs. Large-variation giant-removal Small-variation vs. No-salamander Large-variation giant-removal vs. No-salamander |
19.35 |
<0.0001 |
5.86 11.48 1.28 10.64 9.55 |
0.016 0.0007 0.26 0.0011 0.0020 |
Table F5. Post hoc Wilcoxon test results for median timing of frog metamorphosis.
Treatment |
χ²1 |
P |
Large-variation vs. Small-variation Large-variation vs. Large-variation giant-removal Large-variation vs. No-salamander Small-variation vs. Large-variation giant-removal Small-variation vs. No-salamander Large-variation giant-removal vs. No-salamander |
15.4 |
<0.0001 |
3.93 13.27 1.86 7.86 9.00 |
0.048 0.0003 0.17 0.005 0.0027 |
Table F6. Post hoc Wilcoxon test results for mean size at metamorphosis of the frog.
Treatment |
χ²1 |
P |
Large-variation vs. Small-variation Large-variation vs. Large-variation giant-removal Large-variation vs. No-salamander Small-variation vs. Large-variation giant-removal Small-variation vs. No-salamander Large-variation giant-removal vs. No-salamander |
34.01 |
<0.0001 |
8.37 10.88 12.38 0.61 5.93 |
0.0038 0.0010 0.0004 0.43 0.015 |
Table F7. Post hoc Wilcoxon test results for median size at metamorphosis of the frog.
Treatment |
χ²1 |
P |
Large-variation vs. Small-variation Large-variation vs. Large-variation giant-removal Large-variation vs. No-salamander Small-variation vs. Large-variation giant-removal Small-variation vs. No-salamander Large-variation giant-removal vs. No-salamander |
30.61 |
<0.0001 |
5.93 10.29 6.57 0.56 4.25 |
0.015 0.0013 0.010 0.45 0.039 |