American Pronghorn: Social Adaptations and the Ghosts of Predators Past
By: John Byers (author)Hardback
1 - 2 weeks availability
Pronghorn antelope are the fastest runners in North America, often reaching speeds of up to 100 kilometers per hour. Yet none of their current predators can run this fast. Pronghorn also gather in groups, a behaviour commonly viewed as a "safety in numbers" defence. But again, none of their living predators are fearsome enough to merit such a response. In this book, John A. Byers argues that these mystifying behaviours evolved in response to the dangerous predators with which pronghorn shared their grassland home for nearly four million years: among them fleet hyenas, lions, and cheetahs. Although these predators died out 10,000 years ago, pronghorn still behave as if they were present - as if they were living with the ghosts of predators past. This provocative hypothesis should stimulate behavioural ecologists and mammalogists to consider whether other species' adaptations are also haunted by selective pressures from predators past. The book should also find an audience among evolutionary biologists and paleontologists.
Preface Ch. 1: Survivors from Another World Ch. 2: Methods and Materials Ch. 3: The Selfish Herd: Modal Social Organization Ch. 4: Birth and the Hiding Strategy Ch. 5: Behavioral Development Ch. 6: Lifetime Dominance Ranks of Females and Males Ch. 7: Female Reproduction: The Level of Expenditure Ch. 8: Female Reproduction: Age, Rank, and Individual Differences Ch. 9: Male Reproduction: A Short, Dangerous Life Ch. 10: The Mating System: Conflict and Cooperation between the Sexes Ch. 11: The Ghosts of Predators Past App. 1: Ungulate Populations on the National Bison Range App. 2: The National Bison Range Pronghorn Population App. 3: A Partial List of Native Flowering Grassland Plants Found in Pronghorn Habitat on the National Bison Range App. 4: Dates of Birth and Death, Focal Hours of Observation, and the Nature of Early Social Experience of Individual Males and Females That Were Followed Longitudinally App. 5: Measurement of Male Size App. 6: Measurement of Rut Activity Costs of Females References AuthorIndex Subject Index
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- ID: 9780226086989
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