Variation and trade-offs in life history traits of the protist parasite Monocystis perplexa (Apicomplexa) in its earthworm host Amynthas agrestis 1School of Biological Sciences, Washington State University, Pullman, WA, United States of America 2Department of Biology, University of Vermont, Burlington, VT, United States of America DOI 10.7717/peerj.17161 Academic Editor Nicole Gottdenker Subject Areas Ecology, Parasitology Keywords Ecology, Life History Traits, Parasitology, Protists,...