Ecological Archives E096-168-A7

Kunio Takatsu and Osamu Kishida. 2015. Predator cannibalism can intensify negative impacts on heterospecific prey. Ecology 96:15971608. http://dx.doi.org/10.1890/14-1616.1

Appendix G. Summary of the results of post hoc statistical analyses of larval salamander traits, comparing the three salamander treatments (i.e., large-variation, large-variation giant-removal, and small-variation treatments).

Summary of the results of post hoc statistical analyses of larval salamander traits, comparing the three salamander treatments (i.e., large-variation, large-variation giant-removal, and small-variation treatments). Significant values are in bold (significant level was adjusted using sequential Bonfferoni methods with significant value P = 0.05).

Table G1. Post hoc Wilcoxon test results for mortality from day 19 to day 31.

Treatment

χ²1

P

Large-variation vs. Small-variation

Large-variation vs. Large-variation giant-removal

Small-variation vs. Large-variation giant-removal

18.56

<0.0001

15.15

2.40

<0.0001

0.12

 

Table G2. Post hoc Wilcoxon test results for body length on day 31.

Treatment

χ²1

P

Large-variation vs. Small-variation

Large-variation vs. Large-variation giant-removal

Small-variation vs. Large-variation giant-removal

35.33

<0.0001

14.72

1.00

0.0001

0.32

 

Table G3. Post hoc Wilcoxon test results for gape width on day 31.

Treatment

χ²1

P

Large-variation vs. Small-variation

Large-variation vs. Large-variation giant-removal

Small-variation vs. Large-variation giant-removal

25.22

<0.0001

14.05

0.0029

0.0002

0.96

 

Table G4. Post hoc Kaplan-Meier analysis results for timing at metamorphosis.

Treatment

χ²1

P

Large-variation vs. Small-variation

Large-variation vs. Large-variation giant-removal

Small-variation vs. Large-variation giant-removal

32.05

<0.0001

6.64

3.64

0.010

0.056

 

Table G5. Post hoc Wilcoxon test results for size at metamorphosis.

Treatment

χ²1

P

Large-variation vs. Small-variation

Large-variation vs. Large-variation giant-removal

Small-variation vs. Large-variation giant-removal

26.74

<0.0001

9.24

1.30

0.0024

0.25


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