Male and female <i>Gnatocerus cornutus</i>.

<p>Reported body length is the average straight line distance from head to tip of elytra measured from dorsal and ventral views. Horn length is the average of right and left horns measured by a curved line along the middle of the horn viewed from the dorsal side.</p

Differences in time spent with the female as a function of difference in (A) body length, and (B) horn length.

<p>Solid lines mark zero difference in time and size. In the upper right quadrant larger males spend more time with females (as expected), and in the lower left, smaller males spend more time (counter to expectation). Dashed lines mark the difference between the average size of uninfected and infected males (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0028690#pone-0028690-t001" target="_blank">Table 1</a>). Males are expected to win only 3.4% of the time (1 of 29) when their body length disadvantage exceeds the average reduction due to infection - or 6.9% (2 of 29) for average infection induced horn length reduction (open circles).</p

Effect of parasite exposure on male morphology.

<p>The relationships between horn size and (A) body length or (B) body mass plotted for exposed (open circles, dashed line) and control (closed circles, solid line) beetles. Below each plot we report the results of the GLM with p-values for significant model terms in bold. Both body size measures are significant predictors of horn size. Significant, negative treatment effects indicate that parasite infection reduces horn size. Non-significant interactions indicate no change in the slope of the body size to horn size allometry for length or mass.</p

Effect of parasite exposure on beetle morphology and activation of the melanin-synthesis cascade.

<p>Mean ± s.e. are reported for each measure. % Effect = (1−[exposed/control])*100.</p

The correlation between the fluorescence and the rate of H₂O₂ scavenged for a) total RFU from 465 nm to 600 nm (R² = 0.25, F = 6.05, P = 0.024), b) CFP from 465 nm to 500 nm (R² = 0.08, F = 1.6295, P = 0.218), c) GFP from 505 nm to 550 nm (R² = 0.22, F = 4.95, P = 0.04) and d) RFP from 555 nm to 600 nm (R² = 0.34, F = 9.37, P<0.01).

<p>The correlation between the fluorescence and the rate of H₂O₂ scavenged for a) total RFU from 465 nm to 600 nm (R² = 0.25, F = 6.05, P = 0.024), b) CFP from 465 nm to 500 nm (R² = 0.08, F = 1.6295, P = 0.218), c) GFP from 505 nm to 550 nm (R² = 0.22, F = 4.95, P = 0.04) and d) RFP from 555 nm to 600 nm (R² = 0.34, F = 9.37, P<0.01).</p

The mean H₂O₂ scavenging rate (mM s⁻¹ mg protein⁻¹) and standard errors for each coral species.

<p>The mean H₂O₂ scavenging rate (mM s⁻¹ mg protein⁻¹) and standard errors for each coral species.</p

The mean H₂O₂ scavenging activity (±SE) of healthy and inflamed tissue of a) <i>Porites</i> sp. (T ₍₄₎ = 2.8675 P = 0.05) and b) <i>A. millepora</i> (T ₍₄₎ = 3.6235, P = 0.02).

<p>The mean H₂O₂ scavenging activity (±SE) of healthy and inflamed tissue of a) <i>Porites</i> sp. (T ₍₄₎ = 2.8675 P = 0.05) and b) <i>A. millepora</i> (T ₍₄₎ = 3.6235, P = 0.02).</p

Pigmentation responses of a) <i>A. millepora</i> with blue pigmentation in response to breakage and b) <i>Porites</i> massive sp. with pink pigmentation in response to fish bites.

<p>Pigmentation responses of a) <i>A. millepora</i> with blue pigmentation in response to breakage and b) <i>Porites</i> massive sp. with pink pigmentation in response to fish bites.</p

The mean relative FP concentration in inflamed and healthy tissue for a) RFP (RFU±SE) in <i>Porites</i> sp. (T ₍₂₎ = 13.0067, P = 0.05) and b) CP (absorbance at 588 nm±SE) in <i>A. millepora</i> (T ₍₂₎ = 4.0497, P = 0.05).

<p>The mean relative FP concentration in inflamed and healthy tissue for a) RFP (RFU±SE) in <i>Porites</i> sp. (T ₍₂₎ = 13.0067, P = 0.05) and b) CP (absorbance at 588 nm±SE) in <i>A. millepora</i> (T ₍₂₎ = 4.0497, P = 0.05).</p

The mean fluorescent emission spectra per mg protein for seven Caribbean coral species (ex. 280 nm).

<p>The mean fluorescent emission spectra per mg protein for seven Caribbean coral species (ex. 280 nm).</p