Article
Parasite-associated polymorphism in a cyclic ungulate population.
Proceedings. Biological sciences - 22 Oct 1993
Gulland F M, Albon S D, Pemberton J M, Moorcroft P R, Clutton-Brock T H
Abstract excerpt
An unmanaged population of Soay sheep living on Hirta, St Kilda, Scotland is persistently unstable, fluctuating between about 600 and 1600 individuals. Population crashes occurring approximately every 3 years are primarily due to winter food shortage. In this paper we show that sheep experimentally relieved of their gastrointestinal nematodes (predominantly Teladorsagia spp.) survived a crash better than matched...
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