The Evolutionary Dynamics of the Pocket Gopher Thomomys Bottae, with Emphasis on California PopulationsEvolutionary Dynamics of the Pocket Gopher Thomomys bottae, with Emphasis on California Populations, by James L. Patton and Margaret F. Smith, offers a groundbreaking examination of one of North America's most adaptable mammalian lineages. This study integrates morphology, genetics, and ecology to explain how pocket gophers diversified across the varied landscapes of California and the western United States. Patton and Smith analyze patterns of geographic variation, gene flow, and speciation in Thomomys bottae, showing how local ecological pressures--from soil type and vegetation to elevation and climate--shaped the evolutionary pathways of these fossorial rodents. The work emphasizes both microevolutionary processes visible in contemporary populations and the broader historical forces driving divergence across regions. More than a descriptive natural history, this volume demonstrates the methodological advances that come from combining population genetics, systematics, and field ecology. By dissecting the evolutionary dynamics of a species with wide distribution and ecological flexibility, Patton and Smith illuminate general principles of adaptation, isolation, and diversification that extend beyond gophers to broader evolutionary theory. The book stands as both a reference on Thomomys bottae and a model of integrative research, appealing to evolutionary biologists, mammalogists, and ecologists interested in how species evolve in response to environmental heterogeneity. |
Contents
GENERAL INTRODUCTION | 1 |
MATERIALS AND METHODS | 9 |
GEOGRAPHIC GENETIC PATTERNS OF Thomomys bottae | 38 |
General Patterns of Color Variation | 56 |
MORPHOMETRIC VARIATION IN CALIFORNIA | 66 |
| 86 | |
SUBSPECIES OF CALIFORNIA Thomomys bottae | 105 |
EVOLUTIONARY TEMPO AND MODE IN POCKET GOPHER | 123 |
| 149 | |