Sex differences in Immunity as a Function of Sexual Selection.

<p>The thick solid line represents the case when the condition-dependence of reproduction and the effect of immunity on condition are equal for the sexes; under these circumstances, when sexual selection is absent or weak, males should invest more in immune defense than should females (i.e., thick, solid black line is above the dashed line, in the region of M>F investment in immunity). As the strength of sexual selection increases, the female bias in investment in immunity increases. However, if parasites have particularly strong negative effects on condition in males, and/or if male reproductive success is highly dependent on condition, relative to those same effects in females, males should invest more in immunity than should females, even when sexual selection is strong (thin solid line raised above the thick solid line, and never crossing dashed line). Of course, the converse situation may mean that males never invest more in immunity than do females (lower thin solid line). Adapted from Stoehr and Kokko <a href="http://www.plospathogens.org/article/info:doi/10.1371/journal.ppat.1000267#ppat.1000267-Stoehr1" target="_blank">[14]</a>.</p

Supplementary Image S1 from Rethinking same-sex sexual behaviour: male field crickets have broad mating filters

Example of the plastic cricket used as a stimulus in our experiment. An adult male Pacific field cricket (Teleogryllus oceanicus) is included for comparison

Balenger_DataDryad

File contains movement behavior data and morphological data (size and wing morph) for each individual used in this study

Average life-time reproductive success of simulated male crickets

Average life-time reproductive success of simulated male crickets as a function of tendency for satellite behavior across variation in risk of parasitism if calling, under variation in population density, sex ratio, mortality rate, female phonotaxis, and female propensity to mate

Counts per survey plot

Contains number of crickets of each cricket type counted in individual survey plots during an initial survey period, and then subsequent to a 20-minute song playback period

Distances from speaker

Contains the distance of each individual cricket observed at the end of a 20-minute playback period to a speaker located in the center of the survey plot

Simmons et. al. -J-Evol-Biol-2014

Raw peak areas of cuticular hydrocarbon compounds found on male crickets using GCM