In the crab spider, Misumena vatia, Douglass H. Morse and his colleagues found an ideal species on which to test basic questions associated with lifetime fitness. From the moment a female crab spider selects a flower on which to sit and wait for her prey, there unfolds a cascade of lifetime fitness variables that determine her evolutionary success. Did she choose a flower that attracts suitable prey? Will she encounter a competitor or predator? Will she survive long enough to breed, and will her offspring contribute to the gene pool? Ecologists had previously identified variables that shape populations, but lacked the experimental data needed to make comprehensive tests of individuals that made different foraging decisions. Morse found that Misumena is particularly well suited to both field study and laboratory experiments. Over the last 25 years, his simple yet elegant experiments have contributed to our understanding of lifetime fitness and helped to develop study techniques that can be applied to animals with other, more complex, life histories. "Predator upon a Flower" recounts these influential discoveries in a gracefully crafted narrative that moves ever outward from individuals to communities to ecosystems, and concludes by suggesting directions for future research in spider biology.

This readable text represents a much needed synthesis of ecological insight into animal behavior. The field of behavioral ecology is relatively new, having evolved from a combination of classical ethology, as developed by Lorenz and Tinbergen, and population ecology. Now for the first time, a single author integrates the vast literature on animal ecology and behavior into a conceptual whole. Exploring the theme of resource acquisitions, Douglass H. Morse combines the comparative approach to biology with models based on evolutionary theory. Secondary consequences of sexual selection and other selective pressures are considered in detail. Discussion of interspecific interactions and constraints is especially rich, as is the treatment of foraging theory, kinship theory, habitat selection and predator avoidance. Perhaps the book's greatest achievement, however, is its unparalleled ecological and evolutionary analysis of individual differences. Behavioral Mechanisms in Ecology will meet the teaching and reference needs of an extremely broad audience of professional biologists.