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Lack of resistance against the tick Ixodes ricinus in two related passering bird species

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Show simple item record Heylen, D. J. Madder, M. Matthysen, E. 2010-02-10T10:02:36Z 2010-02-10T10:02:36Z 2010
dc.identifier.issn 0020-7519
dc.identifier.other ITG-A2A
dc.identifier.other ANIMAL
dc.identifier.other U-ANIMAL
dc.identifier.other JIF
dc.identifier.other DOI
dc.identifier.other UPD18
dc.identifier.other ABSTRACT
dc.description.abstract Although many wild bird species may act as reservoir hosts for tick-transmitted diseases and/or support long-distance dispersal of infected ticks, to date no research has been done on the extent to which songbirds may acquire resistance to ixodid ticks. Here we investigate whether two passerine species belonging to the family Paridae, the blue tit (Cyanistes caeruleus) and the great tit (Parus major), are able to acquire resistance after repeated infestations with Ixodes ricinus nymphs. As blue tits are less frequently exposed to I. ricinus in the wild than great tits, we expected I. ricinus to be less adapted towards the blue tit's resistance mechanisms. Over the three infestation sessions we observed consistently high tick attachment rates and yields, high engorgement weights, and short engorgement and moulting durations, indicating that neither of the two songbird species is able to mount effective immune responses against I. ricinus nymphs after repeated infestations. As a consequence of the lack of resistance, birds were unable to prevent the direct harm (acute blood depletion) caused by tick feeding. Birds compensated the erythrocyte loss without reduction in general body condition (body mass corrected for tarsus length). The lack of resistance suggests that I. ricinus has a long co-evolutionary history with both avian hosts, which enables the tick to avoid or suppress the host's resistance responses. 2009 Australian Society for Parasitology Inc. Published by Elsevier Ltd. All rights reserved. en
dc.language English en
dc.subject Tick-borne diseases en
dc.subject Ticks en
dc.subject Ixodes ricinus en
dc.subject Reservoirs en
dc.subject Birds en
dc.subject Resistance en
dc.subject Tolerance en
dc.subject Infestation en
dc.subject Adaptation en
dc.title Lack of resistance against the tick Ixodes ricinus in two related passering bird species en
dc.type Article en
dc.citation.issue 2 en
dc.citation.jtitle International Journal for Parasitology en
dc.citation.volume 40 en
dc.citation.pages 183-191 en
dc.citation.jabbreviation Int J Parasitol en

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