Behavior and Ecology of the Northern Fur Seal

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  • Format: Hardcover
  • Copyright: 1998-01-01
  • Publisher: Princeton Univ Pr

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Covering the behavior and ecology of the northern fur seal, this book is a model long-term study of marine mammals, one that tests theory through both observation of undisturbed behavior and manipulative experiments on individuals. Here Roger Gentry draws on nearly two decades of research on three different islands to show how behavior among these seals changes with population size, sex ratio, and environment, to explain the behavior of the population beginning with individuals, and to generalize the results to other members of the eared seal family. In so doing, he offers one of the most comprehensive studies of its kind on any marine mammal species to date.Gentry shows that the species is driven by very different behavioral traits than have been assumed for it in the past. His book analyzes behavior on scales of hours to lifetimes, investigates the mating system, considers processes that underlie the mating system (site fidelity, behavioral estrus, and the development of territoriality), and addresses specific aspects of maternal strategy (female attendance behavior, pup growth, seasonal influences, and the effects of continental shelf width). Gentry contributes to knowledge about marine mammals by providing a very specific basis for interspecies comparisons, and he suggests a link between population trend and environmental regime shifts. He also guides the debate over seal mating systems from an interpretive to an empirical or experimental basis.

Table of Contents

Preface ix(2)
Acknowledgments xi(4)
List of Contributors xv
PART ONE: Behavior at the Population Level 3(84)
Chapter 1. Introduction
Chapter 2. Population Changes, 1974 to 1986
Chapter 3. Temporal Factors in Behavior
PART TWO: The Mating System 87(64)
Chapter 4. Behavior of Adult Males
Chapter 5. Male-Female Associations
Chapter 6. Behavior of Adult Females
PART THREE: Processes Fundamental to the Mating System 151(66)
Chapter 7. Site Fidelity and Philopatry
Chapter 8. Estrus and Estrous Behavior
John R. Holt
Carolyn B. Health
Chapter 9. Ontogeny of Male Territorial Behavior
PART FOUR: The Maternal Strategy 217(60)
Chapter 10. Female Attendance Behavior
Chapter 11. Neonatal Growth and Behavior
Michael E. Goebel
John Calambokidis
Chapter 12. Female Foraging Behavior: Inter-and Intra-Annual Variation in Individuals
Michael E. Goebel
Chapter 13. Female Foraging Behavior: Effects of Continental Shelf Width
Mark O. Pierson
Valery A. Vladimirov
PART FIVE: Summary, Comparisons, and Conclusions 277(38)
Chapter 14. Synthesis
Chapter 15. Implications for Otariid Studies
Appendix: Scientific and Common Names of Species Referred to in This Work 315(2)
Notes 317(36)
Literature Cited 353(26)
Author Index 379(4)
Subject Index 383

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