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This 1980 book considers the patterns of population fluctuations of
animals and intraspecific social relations by means of comparative
methods and discusses the evolution of population regulation
mechanisms and social relations. The author proposes that parental
care has evolved in environments in which it is difficult for the
young to obtain food, whilst high fecundity has evolved in the
opposite environment. He presents evidence from a wide range of
organisms to argue that during evolution animals repeatedly face
the 'choice' of two strategies - low fecundity combined with
parental protection, or high fecundity - and that this choice
determined the amplitude, regularity and associated main factors of
population fluctuations as well as the main characteristics of
social relations as expressed in group life or dispersed living
involving territory. Although many examples are drawn from insects,
with which the author is most familiar, mammal, birds and other
animal groups are also examined in depth.
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