Demographic and ecological effects on patterns of parasitism in eastern chimpanzees (Pan troglodytes schweinfurthii) in Gombe National Park, Tanzania Dominic A. Travis, Titus Mlengeya, John Pauley, Joel Pond, Anne E. Pusey, Yvonne Nadler, Derek J. Meyer, Elizabeth P. Canfield, Jody Raphael, Elizabeth V. Lonsdorf, Thomas R. Gillespie • 2010