TY  - RPRT
AU  - Kauffmann M
PY  - 2012//
TI  - Relations hôte-parasite chez le manchot royal et la tique Ixodes uriae, DU Université de Pau et des Pays de l'Adour
N2  - Parasites act at both individual and population level on their host. Their potentialeffect on individual host physiology and behavior can affect (usually negatively if they areparasites) host fitness and therefore induce a selection in host population of parasiteresistanttraits. Hence the key role occupied by parasites in most ecosystems. We undertooka first step towards comprehension of the host-parasite relationship in king penguinAptenodytes patagonicus and tick Ixodes uriae, by trying to assess the effect of tickinfestation on individual king penguins during reproduction. 61 king penguin pairs breedingeither in a non infested area (ZNI) or in an infested area (ZI) of the colony were submittedeither to an anti-parasitic treatment or to a control treatment at the onset of incubation.The treatment brought the tick load close to zero in the treated group. In ZI, body conditionwhich was measured several times along the incubation period was higher in treatmentbirds. Also offspring growth during the first month of life was significantly more important intreatment birds compared to control, which resulted in larger 1-month-old chicks in thetreated group. These results show the significant effect of Ixodes uriae on an individualphysiology and its offspring, potentially affecting its reproductive success thus its fitness. Alonger term offspring monitoring should allow a better assessment of the effect of Ixodesuriae on king penguin fitness.
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=4173), last updated on Wed, 10 Jul 2024 23:08:12 +0200
ID  - KauffmannM2012
ER  -