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SUMMARY:Parasitism\, family conflict &amp\; success in a North Atlantic se
 abird - Hanna Granroth-Wilding\, Edinburgh University / BAS
DTSTART:20140403T140000Z
DTEND:20140403T150000Z
UID:TALK51646@talks.cam.ac.uk
CONTACT:Norman Ratcliffe
DESCRIPTION:Parasite infection often influences hosts' fitness and life-hi
 story decisions\, and hence population processes\, but few empirical studi
 es examine how parasitism interacts with other ecological influences on th
 e success of wild hosts. Using field experiments in European shags\, I hav
 e examined how parasitism interplays with conflict between family members 
 over limited resources in a wild seabird\, an ecologically important group
  in which the impacts of parasitism has received little attention. This ta
 lk explores how the impact of parasitism varies between individual hosts a
 nd with extrinsic influences\, quantifying its immediate and longer-term i
 mpacts on host performance and life-history decisions. I show that parasit
 ism is a key component of young shags' developmental environment\, interac
 ting with prevailing conditions differently for chicks of different hatchi
 ng order\; that infection has greater impacts on the infected individual's
  family members than on the individual itself\; and that such indirect eff
 ects can persist beyond the breeding season to affect overwinter foraging 
 and subsequent breeding performance. Parasite infection may thus play a su
 bstantial but underappreciated role in shaping demographically important t
 raits in seabirds.
LOCATION:British Antarctic Survey
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