Ecological Archives E096-117-A2

Gretel L. Clarke and Alison K. Brody. 2015. Gender inequality in predispersal seed predation contributes to female seed set advantage in a gynodioecious species. Ecology 96:13091317. http://dx.doi.org/10.1890/14-1513.1

Appendix B. ANCOVAs for 2009/2010 comparing the importance of fitness components to seed set between the sex morphs.

Table B1. ANCOVAs for 2009/2010 comparing the importance of fitness components to seed set between the sex morphs. To address whether the importance of individual fitness on seed set differed between genders, we analyzed 2009–2010 data from observational studies using ANCOVAs with total plant seed set as the dependent variable, gender and site as effects, and one of the fitness components as a covariate, along with the gender × fitness component interaction. The fitness variable used varied among ANCOVAs and included fruit set, seeds / fruit, and proportion of fruits destroyed by Hylemya. Significant factors and interactions (p < 0.05) are in bold.

2009

Source

df

fruit set

seeds / fruit

proportion
destroyed

site

25

4.872 (<0.001)

5.581 (<0.001)

4.038 (<0.001)

gender

1

1.322 (0.252)

1.169 (0.281)

0.254 (0.615)

fitness measure

1

6.328 (0.013)

65.515 (<0.001)

5.450 (0.021)

gender × fitness measure

1

0.628 (0.429)

3.510 (0.063)

1.918 (0.168)

residual

186

 

 

 

2010

Source

df

fruit set

seeds / fruit

proportion
destroyed

site

5

15.851 (<0.001)

9.385 (<0.001)

6.056 (<0.001)

gender

1

1.037 (0.31)

7.224 (0.008)

3.097 (0.08)

fitness measure

1

7.186 (0.008)

35.954 (<0.001)

35.691 (<0.001)

gender × fitness measure

1

0.563 (0.454)

5.277 (0.022)

4.473 (0.035)

residual

235

 

 

 


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