Landscape‐mediated variation in diet is associated with egg size and maculation in a generalist forager

O'Hanlon, N. J., Alonso, S., Miller, J. A.O., McGill, R. A.R. and Nager, R. G. (2019) Landscape‐mediated variation in diet is associated with egg size and maculation in a generalist forager. Ibis, (doi:10.1111/ibi.12739) (Early Online Publication)

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Abstract

Human impacts alter landscapes with consequences for the distribution and availability of high‐quality food resources to populations inhabiting those landscapes, which may impact on the reproductive output of individuals in those populations. Sensitivity of wild populations to changes in food resources may vary among stages of the annual cycle. For example, in birds, effects are likely to be greater during costly stages such as egg production. Here we compare assimilated diet (from stable isotope analysis of chick feathers) and egg traits (egg size, shape, eggshell colour and maculation, using pattern‐analysis software) in Herring Gulls Larus argentatus, across seven colonies in southwest Scotland and Northern Ireland.

Item Type:Articles
Additional Information:This work was also supported by funding from the European Union’s INTERREG IVA Programme (project 2859 ‘IBIS') managed by the Special EU Programmes Body, and a grant from the NERC Life Sciences Mass Spectrometry Facility for the stable isotope analysis (EK228-07/14).
Status:Early Online Publication
Refereed:Yes
Glasgow Author(s) Enlighten ID:O'Hanlon, Miss Nina and Alonso, Miss Sarah and McGill, Dr Rona and Nager, Dr Rudolf and Miller, Ms Julie
Authors: O'Hanlon, N. J., Alonso, S., Miller, J. A.O., McGill, R. A.R., and Nager, R. G.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Ibis
Publisher:Wiley
ISSN:0019-1019
ISSN (Online):1474-919X
Published Online:11 May 2019

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
644031Integrating Macroecology and Modelling to Elucidate Regulation of Services from Ecosystems -IMMERSERudolf NagerNatural Environment Research Council (NERC)NE/L003090/1RI BIODIVERSITY ANIMAL HEALTH & COMPMED