Antiparasite treatments reduce humoral immunity and impact oxidative status in raptor nestlings
Sveinn Are Hanssen, Jan Ove Bustnes, Lisbeth Schnug, Sophie Bourgeon, Trond Vidar Johnsen, Manuel Ballesteros, Christian Sonne, Dorte Herzke, Igor Eulaers, Veerle L. B. Jaspers, Adrian Covaci, Marcel Eens, Duncan J. Halley, Truls Moum, Rolf Anker Ims and Kjell Einar Erikstad
Article first published online: 22 NOV 2013 | DOI: 10.1002/ece3.891
Parasites are natural stressors that may have multiple negative effects on their host as they usurp energy and nutrients and may lead to costly immune responses that may lead to oxidative stress. The objective of this study was to explore effects of parasites by treating chicks of two raptor species against both internal and external parasites. Treatment against ectoparasites led to a reduction in circulating immunoglobulin plasma levels in male chicks. Treatment against endoparasites reduced immunoglobulin plasma levels in white-tailed sea eagles. Furthermore, total oxidant status was higher when not receiving any parasite reduction treatment and when receiving both endo- and ectoparasitic reduction treatment compared with receiving only one antiparasite treatment.