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Population changes in St Kilda during the 19th and 20th centuries

Published online by Cambridge University Press:  31 July 2008

E. J. Clegg
E. J. Clegg
Affiliation:
Department of Human Biology and Anatomy, University of Sheffield
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Summary

During the century before its final evacuation in 1930 the population of St Kilda declined from over 100 to 36. While undoubtedly emigration and natural disasters played a part in this depopulation, ongoing processes were also important. In particular, replacement levels were never sufficient to maintain a constant population size. In the early part of this period the main factor responsible was heavy neonatal mortality, almost all from tetanus (‘eight-day sickness’), but latterly the fertility of those who survived was low, even though mortality rates had declined. In part at least, this decline in fertility could be ascribed to a lower frequency of marriage—a phenomenon seen elsewhere in the Outer Hebrides during the latter part of the 19th century.

Estimates of the opportunity for selective pressure on the population suggest very high levels, due earlier mainly to high pre-reproductive mortality and later to lowered fertility.

Type
Research Article
Information
Journal of Biosocial Science , Volume 9 , Issue 3 , July 1977 , pp. 293 - 307
Copyright
Copyright © 1977, Cambridge University Press

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References

Clegg, E.J. (1975) Marriages in Lewis and Harris 1861–1966. In: Biosocial Inter-relations in Population Adaptation, pp. 147–163. Edited by Watts, E. S., Johnston, F. E. & Lasker, G. W.. Mouton, The Hague.Google Scholar
Crow, J.F. (1958) Some possibilities for measuring selection intensities in man. Hum. Biol. 30, 1.Google ScholarPubMed
Crow, J.F. (1966) The quality of people—human evolutionary change. Bioscience, 16, 863.CrossRefGoogle Scholar
Gibson, G. (1926–1928) The tragedy of St. Kilda. Cal. med. J. 13, 50.Google Scholar
Lawson, W.M. (1977) Notes on St. Kilda. Scottish Record Society (in press).Google Scholar
Macaulay, W.K. (1964) The History of St. Kilda. London.Google Scholar
Macgregor, D.R. (1960) The island of St. Kilda: a survey of its character and occupance. Scot. Stud. 4, 1.Google Scholar
Martin, M. (1698) A Late Voyage to St. Kilda, the Remotest of all the Hebrides. London.Google Scholar
Munro, R.W. (Ed.) (1961) Monro's Western Isles of Scotland and Genealogies of the Clans, 1549. Oliver & Boyd, Edinburgh.Google Scholar
Seton, G. (1878) St. Kilda, Past and Present. Blackwood, Edinburgh.Google Scholar
Steel, T. (1975) The Life and Death of St. Kilda, p. 255. Fontana/Collins, Glasgow.Google Scholar
Thompson, F. (1970) St. Kilda and other Hebridean Outliers, p. 220. David & Charles, Newton Abbott.Google Scholar
Turner, G.A. (1895) The successful preventive treatment of the scourge of St. Kilda (tetanus neonatorum), with some considerations regarding the management of the cord in the newborn infant. Glas. med. J. 43, 161.Google Scholar
Wilson, J. (1842) A Voyage round the Coasts of Scotland and the Isles. Vol. 2, pp. 1–113.Google Scholar
Wright, S. (1938) Size of population and breeding structure in relation to evolution. Science, N.Y. 87, 430.Google Scholar