Data from: Males harm females less when competing with familiar relatives

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Lymbery & Simmons 2017 Raw Data.xlsx (27.47 Kb):
Data from the publication "Males harm females less when competing with familiar relatives" in Proceedings of the Royal Society of London B, by Samuel J Lymbery and Leigh W Simmons. Sheet one contains the raw data, and sheet two contains a legend explaining column titles.

Lymbery & Simmons Raw Data Minus Outliers.xlsx (32.13 Kb):
Data file containing the same data as the first file associated with this manuscript, but with outliers removed as described in the article.

Lymbery & Simmons 2017 R Script.R (17.56 Kb):
Contains all R code used to analyse data from Lymbery and Simmons (2017) "Males harm females less when competing with familiar relatives."

Sexual conflict occurs when reproductive partners have different fitness optima, and can lead to the evolution of traits in one sex that inflict fitness costs on the opposite sex. Recently, it has been proposed that antagonism by males towards females should be reduced when they compete with relatives, because reducing the future productivity of a female would result in an indirect fitness cost for a harmful male. We tested this prediction in the seed beetle Callosobruchus maculatus, the males of which harm females with genital spines and pre-copulatory harassment. We compared lifespan, lifetime egg production and lifetime offspring production among females housed with groups of males that varied in their familiarity and relatedness. Females produced significantly more eggs and offspring when grouped with males who were both related and familiar to each other. There was no effect of male relatedness or familiarity on female lifespan. Our results suggest that males plastically adjust their harmfulness towards females in response to changes in inclusive fitness payoffs, and that in this species both genetic relatedness and social familiarity mediate this effect.