The Genetic Basis of Virulence in P. ramosa

<p>The solid and dashed lines show survival of daphniids infected with secondary spores from early and late killing P. ramosa, respectively. The secondary spores were produced in a previous experiment and were extracted from hosts killed by the parasite at 25 to 37 d and 55 to 67 d of age, respectively. There is a significant difference in survival between daphniids infected with early or late killing spores ( <i>p</i> < 0.001). For more details about the statistics, see <a href="http://www.plosbiology.org/article/info:doi/10.1371/journal.pbio.0040197#s3" target="_blank">Materials and Methods</a>.