SDMs of <i>Pristionchus pacificus</i> and its beetle hosts using DIVA-GIS.

<p>(a) Species distribution models for: (i) <i>P. pacificus,</i> and (ii-v) its beetle hosts: (ii) <i>Adoretus</i> sp., (iii) <i>Hoplochelus marginalis,</i> (iv) <i>Hoplia retusa,</i> and (v) <i>Oryctes borbonicus,</i> on La Réunion Island, draped over a topographical surface at 2.5 arc minute resolution, using the program DIVA-GIS and all bioclimatic variables (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0087317#pone-0087317-t001" target="_blank">Table 1</a>). Panel (a) demonstrates the geographic distribution of theoretical suitable habitat, with the legend indicating presence probabilities for <i>P. pacificus</i> over five levels in a linear series; level 1 represents the minimum probability value of <i>P. pacificus</i> presence and level 5, the maximum probability presence value, according to a ‘percentile envelope’ based on the various climate variables in the model (for example, category 1 = low (0–2.5 percentile) indicates a low presence probability of <i>P. pacificus</i>, where dark green areas on the map are those corresponding to climate envelope outliers (in the <2.5 and >97.5 percentile). Species distribution points are indicated with black circles in each case, and Panel (a)(i) shows location codes for all maps. (b) Climatic patterns for La Réunion Island draped over a topographical surface at 2.5 arc minute resolution using the program DIVA-GIS, illustrating the hottest (maximum temperature of warmest month >25°C) and driest (precipitation of driest quarter <150 mm) areas (in red). Panels show individual species distributions (coloured circles) for: (i) <i>P. pacificus,</i> and (ii-v) its beetle hosts: (ii) <i>Adoretus</i> sp., (iii) <i>H. marginalis,</i> (iv) <i>H. retusa,</i> and (v) <i>O. borbonicus</i>. Panel (a)(i) shows the location codes for all maps.