Abstract
This chapter is concerned with some of the population-level consequences of lifehistory processes, in particular with population growth rates and migration. In the final section, I discuss sex ratios, a variable that frequently plays a crucial role in determining the costs and benefits of different behavioural strategies, but whose significance has often been overlooked.
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In addition to the 23 species in Moore’s (1984) table, I have included black-and-white colobus among the transfer species on the evidence of Dunbar (in press), and the gelada among the non-transfer species on the evidence of Ohsawa and Dunbar (1984). I have also counted the hamadryas baboon as a non-transfer species: following Wrangham (1980), Moore seems to have misinterpreted the evidence that female hamadryas transfer between one-male units as implying transfer between ecological groups. In fact, it is clear from Sigg el al (1982) that female hamadryas transfer only between one-male units of the same band.
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© 1988 Robin Dunbar
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Dunbar, R.I.M. (1988). Demographic Processes: (2) Population Parameters. In: Primate Social Systems. Studies in Behavioural Adaptation . Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-6694-2_5
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DOI: https://doi.org/10.1007/978-1-4684-6694-2_5
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-6696-6
Online ISBN: 978-1-4684-6694-2
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