Abstract
In the European robin, Erithacus rubecula, there is a gradient in mean clutch size from the northern to the southern limits of the range of the species. Mean clutches of 6.3 occur in Scandinavia, 5.9 in central France, 4.9 in Spain, 4.2 in North Africa, and 3.5 in the Canary Islands (Lack, 1954). There is, in addition, a small longitudinal gradient within Europe, amounting to a decrease of about 0.4 from east to west, and in Britain clutches are slightly smaller than in areas immediately across the Channel in continental Europe. The gradient is, however, mainly latitudinal, and the pattern of geographical variation in clutch size in the robin is repeated in many species of birds, most of them passerines.
Denis F. Owen was David Lack’s field assistant from 1951 to 1958. At Oxford he worked on the population biology of rooks, herons and tits and, in collaboration with Lack, on the food of swifts. He has subsequently taught and done research in ecology in the United States, Uganda, Sierra Leone and Sweden, and in 1974 was appointed Distinguished Visiting Professor at the University of Massachusetts. He is the author of 5 books and about 120 scientific papers.
Preview
Unable to display preview. Download preview PDF.
References
Allen, J. A. (1972). Evidence for stabilizing and apostatic selection by wild blackbirds. Nature, Lond., 237, 348–349.
Ashmole, N. P. (1961). The biology of certain terns. D. Phil. thesis, University of Oxford. (Cited by Lack and Moreau, 1965).
Cody, M. L. (1966). A general theory of clutch size. Evolution, 20, 174–184.
Croze, H. (1970). Searching image in carrion crows. Z. Tierpsychol. Suppl., 5, 1–85.
Gibb, J. A. (1962). L. Tinbergen’s hypothesis of the role of specific search images. Ibis, 104, 106–111.
Jenni, D. A. (1969). A study of the ecology of four species of herons during the breeding season at Lake Alice, Alachua County, Florida. Ecol. Monogr., 39, 245–270.
Lack, D. (1947). The significance of clutch-size. Ibis, 89, 302–352.
Lack, D. (1949). Comments on Mr Skutch’s paper on clutch-size. Ibis, 91, 455–458.
Lack, D. (1954). The Natural Regulation of Animal Numbers. Clarendon Press, Oxford.
Lack, D. and Moreau, R. E. (1965). Clutch-size in tropical passerine birds of forest and savanna. L’Oiseau, 35, 76–89.
Moreau, R. E. (1944). Clutch-size: a comparative study, with special reference to African birds. Ibis, 86, 286–347.
Owen, D. F. (1956). The food of nestling jays and magpies. Bird Study, 3, 257–265.
Simpson, E. H. (1949). Measurement of diversity. Nature, Lond., 163, 688.
Skutch, A. F. (1949). Do tropical birds rear as many young as they can nourish? Ibis, 91, 430–455.
Tinbergen, L. (1960). The natural control of insects in pine woods. 1. Factors influencing the intensity of predation by songbirds. Arch. Merl. Zool., 13, 265–343.
Editor information
Editors and Affiliations
Copyright information
© 1977 The contributors
About this chapter
Cite this chapter
Owen, D.F. (1977). Latitudinal gradients in clutch size: an extension of David Lack’s theory. In: Stonehouse, B., Perrins, C. (eds) Evolutionary Ecology. Palgrave, London. https://doi.org/10.1007/978-1-349-05226-4_15
Download citation
DOI: https://doi.org/10.1007/978-1-349-05226-4_15
Publisher Name: Palgrave, London
Print ISBN: 978-0-333-28161-1
Online ISBN: 978-1-349-05226-4
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)