Additional file 4.

Spatial distribution of Caenorhabditis species at the scale of a few meters. Twenty apples in four groups of five apples were sampled below a tree on (A) 6 October 2008 and (B) 14 October 2008. The tree trunk is labeled with a black circle. The relative position of each group is shown and the detailed position of apples within a group (within 50 cm of each other) is shown in a close-up in the adjacent rectangle. Blue: apple with C. elegans, with light blue for proliferating populations. Red: C. briggsae, with pink for proliferating populations. Large font size denotes large population size [see Additional File 1 for data].

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FĂ©lix and Duveau BMC Biology 2012 10:59   doi:10.1186/1741-7007-10-59