nerc.ac.uk

Between-individual variation in nematode burden among juveniles in a wild host

Granroth-Wilding, H.M.V.; Daunt, F.; Cunningham, E.J.A.; Burthe, S.J.. 2017 Between-individual variation in nematode burden among juveniles in a wild host. Parasitology, 144 (2). 248-258. 10.1017/S0031182016001700

Before downloading, please read NORA policies.
[img]
Preview
Text
This article has been published in a revised form in Parasitology http://doi.org/10.1017/S0031182016001700. This version is free to view and download for private research and study only. Not for re-distribution, re-sale or use in derivative works. © Cambridge University Press 2016.
N514328PP.pdf - Accepted Version

Download (1MB) | Preview

Abstract/Summary

Parasite infection in young animals can affect host traits related to demographic processes such as survival and reproduction, and is therefore crucial to population viability. However, variation in infection among juvenile hosts is poorly understood. Experimental studies have indicated that effects of parasitism can vary with host sex, hatching order and hatch date, yet it remains unclear whether this is linked to differences in parasite burdens. We quantified gastrointestinal nematode burdens of wild juvenile European shags (Phalacrocorax aristotelis) using two in situ measures (endoscopy of live birds and necropsy of birds that died naturally) and one non-invasive proxy measure (fecal egg counts (FECs)). In situ methods revealed that almost all chicks were infected (98%), that infections established at an early age and that older chicks hosted more worms, but FECs underestimated prevalence. We found no strong evidence that burdens differed with host sex, rank or hatch date. Heavier chicks had higher burdens, demonstrating that the relationship between burdens and their costs is not straightforward. In situ measures of infection are therefore a valuable tool in building our understanding of the role that parasites play in the dynamics of structured natural populations.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1017/S0031182016001700
CEH Sections: Watt
ISSN: 0031-1820
Additional Keywords: parasite burden, endoscope, dissection, Contracaecum, anisakid, seabird, macroparasite, prevalence, FEC, demographic trait, growth, host–parasite interaction
NORA Subject Terms: Ecology and Environment
Date made live: 29 Nov 2016 14:59 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/514328

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...