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Open Access Research article

Does life history shape sexual size dimorphism in anurans? A comparative analysis

Xu Han12 and Jinzhong Fu1*

Author Affiliations

1 Department of Integrative Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada

2 Present address: Department of Biology, Queen’s University, Kingston, Ontario, K7L 3N6, Canada

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BMC Evolutionary Biology 2013, 13:27  doi:10.1186/1471-2148-13-27

Published: 31 January 2013

Additional files

Additional file 1:

Mean body size in each sex, mean egg size, mean clutch size, mating combat, and parental care behavior in 688 anuran species. SDI = sexual dimorphism index [(female body size/male body size) – 1]. * R = range body size data, M = mean body size data. $ The presence of a trait is coded as “1”, and the absence of a trait is coded as “0”; missing data are represented by “-”.

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Additional file 2:

References for body size, egg size, clutch size, mating combat, and parental care in 688 anuran species. The general mating or breeding descriptions are used to define the absence of mating combat or parental care behaviour, respectively.

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Additional file 3:

TheDstatistic for all binary traits. The non-significant p values are in bold, which means the traits are under Brownian evolution.

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Additional file 4:

Results from simple linear regression analyses on the ‘extended dataset’ using phylogenetic generalized least squares (PGLS) model and phylogenetic independent contrasts (PIC). PIC analyses are conducted at both all-anuran and family levels; outliers, which deviated from the majority of the data points by more than three interquartile ranges from the quartiles, were excluded. All species with relevant data are included in each pairwise correlation analysis. Only correlations with degrees of freedom ≥ 3 are presented. P < 0.10 are in bold. * Dicro = Dicroglossidae; the family has ‘mean’ data only.

Format: DOCX Size: 136KB Download file

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