Tracking the origins of lice, haemospo- ridian parasites and feather mites of the Gal apagos flycatcher (Myiarchus magnirostris)

Results The blood parasites from the two bird species were different: Plasmodium was found only in M. tyrannulus, while a few individuals of M. magnirostris were infected by Haemoproteus multipigmentatus from Gal apagos doves (Zenaida galapagoensis). Myiarchus tyrannulus was parasitized by three louse species, two of which (Ricinus marginatus and Menacanthus distinctus) were also found on Myiarchus magnirostris. We also collected one louse specimen from M. magnirostris, which was identified as Brueelia interposita, a species commonly found on finches and yellow warblers from the Gal apagos, but never recorded on M. tyrannulus. The richness of mite species was lower for M. magnirostris than for M. tyrannulus; all mite species or genera from M. magnirostris were also sampled on M. tyrannulus, butM. tyrannulus had two additional mite species.