Taxonomic distribution of mobile IESs.

Copies of mobile IESs were searched among IES sequences (see Materials and methods). Detected copies were divided in 2 categories: nested copies (i.e., copies inserted within an IES, but not including the extremities of the IES) and bona fide mobile IESs (i.e., copies whose extremities correspond to the extremities of the IES). This table lists all families for which at least 1 species contains ≥10 copies of bona fide mobile IESs in its genome (see S4 Table for information on nested copies). Species codes: pbi, P. biaurelia; pca, P. caudatum; poc, P. octaurelia; ppe, P. pentaurelia; ppr, P. primaurelia; pso, P. sonneborni; pse, P. sexaurelia; pte, P. tetraurelia; ptr, P. tredecaurelia.