author keywords: Bombus impatiens; Crithidia bombi; serial passage

MeSH headings : Animals; Bees; Crithidia; Host Specificity; Host-Parasite Interactions; Parasites; Prevalence

TL;DR: It is suggested that host switching has the potential to affect the adaptation of bee parasites to their hosts, and both the probability and intensity of infection on the primary host increased after serial passage through the alternative host. (via Semantic Scholar)