NDLI: Patterns of parasite abundance and distribution in island populations of Galápagos endemic birds.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Santiago-Alarcon, Diego Whiteman, Noah K. Parker, Patricia G. Ricklefs, Robert E. Valkiunas, Gediminas
Spatial Coverage	Ecuador
Description	Country affiliation: United States Author Affiliation: Santiago-Alarcon D ( Department of Biology, University of Missouri-St. Louis and Whitney R. Harris World Ecology Center, St. Louis, Missouri 63121, USA. dsvd3@umsl.edu)
Abstract	Parasite life-history characteristics, the environment, and host defenses determine variation in parasite population parameters across space and time. Parasite abundance and distribution have received little attention despite their pervasive effects on host populations and community dynamics. We used analyses of variance to estimate the variability of intensity, prevalence, and abundance of 4 species of lice (Insecta: Phthiraptera) infecting Galápagos doves and Galápagos hawks and 1 haemosporidian parasite (Haemosporida: Haemoproteidae) infecting the doves across island populations throughout their entire geographic ranges. Population parameters of parasites with direct life cycles varied less within than among parasite species, and intensity and abundance did not differ significantly across islands. Prevalence explained a proportion of the variance (34%), similar to infection intensity (33%) and parasite abundance (37%). We detected a strong parasite species-by-island interaction, suggesting that parasite population dynamics is independent among islands. Prevalence (up to 100%) and infection intensity (parasitemias up to 12.7%) of Haemoproteus sp. parasites varied little across island populations.
File Format	HTM / HTML
ISSN	00223395
Issue Number	3
Volume Number	94
e-ISSN	19372345
Journal	Journal of Parasitology
Language	English
Publisher	American Society of Parasitologists
Publisher Date	2008-06-01
Publisher Place	United States
Access Restriction	Subscribed
Subject Keyword	Discipline Parasitology Bird Diseases Epidemiology Columbidae Parasitology Haemosporida Hawks Lice Infestations Veterinary Protozoan Infections, Animal Animals Ecuador Growth & Development Phthiraptera Prevalence Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Medicine Parasitology Ecology, Evolution, Behavior and Systematics

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