Intraspecific body size variation and allometry of genitalia in

The current consensus is that sexual selection is responsible for the rapid and diverse evolution of genitalia, with several mutually exclusive mechanisms under debate, including non-antagonistic, antagonistic and stabilizing mechanisms. We used the orb-web spider, Argiope lobata (Araneidae), as a study model to quantify the allometric relationship between body size and genitalia, and to test for any impact of genital structures on male mating success or outcome in terms of copulation duration, leg loss or cannibalism. Our data do not support the ‘one-size-fits-all’ hypothesis that predicts a negative allometric slope between genitalia and body size. Importantly, we measured both male and female genitalia, and there was no sex specific pattern in allometric slopes. Unexpectedly, we found no predictor for reproductive success as indicated by copulation duration, cannibalism, and leg loss.

Evolutionary allometry of cetacean genital shapes. (A) Evolutionary

Coevolution of female and male genital components to avoid genital

An Example of How We Used Allometric Slopes to Test the

Model of a selection regime that alters the slope of the genital

PDF) Allometric relationship between genitalic size and body size

Pitfalls in understanding the functional significance of genital

Intraspecific body size variation and allometry of genitalia in

Pitfalls in understanding the functional significance of genital

Allometry for Sexual Size Dimorphism: Testing Two Hypotheses for

Allometric relationship between head size and body size (a

Body size variation in insects: a macroecological perspective

Phylogenetically independent contrasts analysis of allometry for