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Influence of age, sex and breeding status on mercury accumulation patterns in the wandering albatross Diomedea exulans

Tavares, S.; Xavier, J.C.; Phillips, R.A.; Pereira, M.E.; Pardal, M.A.. 2013 Influence of age, sex and breeding status on mercury accumulation patterns in the wandering albatross Diomedea exulans. Environmental Pollution, 181. 315-320. 10.1016/j.envpol.2013.06.032

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[img] Text (This article has been accepted for publication and will appear in a revised form in Environmental Pollution, published by Elsevier. Copyright Elsevier.)
Paper Hg WA ENVPOL_ short communication_final.docx - Published Version

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Abstract/Summary

Although mercury bio-amplifies through the food chain and accumulates in top predators, mercury concentrations in tissues of the wandering albatross are greater than in any other vertebrate, including closely related species. In order to explore the alternative explanations for this pattern, we measured total mercury concentrations in feathers, plasma and blood cells of wandering albatrosses of known age, sex and breeding status sampled at South Georgia. Mercury concentrations were low in feathers and blood components of chicks, and higher in the feathers of young pre-breeders than in feathers or blood of older pre-breeders and breeding adults. There was no effect of sex on mercury concentrations in the feathers of pre-breeders or breeding adults, whereas levels were significantly higher in blood cells of breeding females than males. The high feather mercury concentrations of young pre-breeders compared with older birds suggest an increase in moult frequency as birds approach maturity.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1016/j.envpol.2013.06.032
Programmes: BAS Programmes > Polar Science for Planet Earth (2009 - ) > Ecosystems
ISSN: 02697491
Additional Keywords: trace metals, pollution, bioaccumulation, seabird
Date made live: 18 Jul 2013 09:17 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/502674

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