The popular consensus on mate choice has long been that females select mates likely to pass good genes to offspring. In Mate Choice, Gil Rosenthal overturns much of this conventional wisdom. Providing the first synthesis of the topic in more than three decades, and drawing from a wide range of fields, including animal behavior, evolutionary biology, social psychology, neuroscience, and economics, Rosenthal argues that "good genes" play a relatively minor role in shaping mate choice decisions and demonstrates how mate choice is influenced by genetic factors, environmental effects, and social interactions.
Looking at diverse organisms, from protozoans to humans, Rosenthal explores how factors beyond the hunt for good genes combine to produce an endless array of preferences among species and individuals. He explains how mating decisions originate from structural constraints on perception and from nonsexual functions, and how single organisms benefit or lose from their choices. Both the origin of species and their fusion through hybridization are strongly influenced by direct selection on preferences in sexual and nonsexual contexts. Rosenthal broadens the traditional scope of mate choice research to encompass not just animal behavior and behavioral ecology but also neurobiology, the social sciences, and other areas.
Focusing on mate choice mechanisms, rather than the traits they target, Mate Choice offers a groundbreaking perspective on the proximate and ultimate forces determining the evolutionary fate of species and populations.
Preface xi
PART 1. MECHANISMS
Chapter 1. Mate Choice and Mating Preferences:
An Overview
1.1 Introduction 3
1.2. What is mate choice? 10
1.3. Choosers and courters, not females and males 11
1.4. Mate choice is distinct from sexual selection 12
1.5. Preference and antipathy underlie realized mate choices 13
1.6. Preference functions 15
1.7. Stages of mate choice 23
1.8. Mate choice as a problem in animal communication 26
1.9. Prospectus 29
1.10. Additional reading 30
Chapter 2. Measuring Preferences and Choices
2.1. Introduction 31
2.2. Measuring mate choice using mating outcomes 33
2.3. Empirical assays of preference: where to begin 35
2.4. Measures of preference 35
2.5. Stimuli used in preference assays 41
2.6. Repeatability of preferences 47
2.7. Sequential versus simultaneous assays 48
2.8. Other concerns with study design and interpretation 51
2.9. Synthesis: measuring mate choice and mating preferences in the twenty-first century 53
2.10. Additional reading 56
Chapter 3. The First Steps in Mate Choice: Preference Functions and Sensory Transduction
3.1. Introduction 57
3.2. Common features of sensory systems 63
3.3. Chemoreception 75
3.4. Vision 78
3.5. Hearing 80
3.6. Other modalities 83
3.7. Sensory constraints on mating preferences 85
3.8. Synthesis 89
3.9. Additional reading 89
Chapter 4. Beyond the Periphery: Perception, Cognition, and Multivariate Preferences
4.1. Introduction 91
4.2. Mechanisms of perceptual integration 101
4.3. Categorical perception 107
4.4. Integration rules for complex preferences 110
4.5. Synthesis: complex preferences as integrated phenotypes 116
4.6. Additional reading 120
Chapter 5. Aesthetics and Evaluation in Mate Choice
5.1. Introduction: "A taste for the beautiful" 121
5.2. Universals of beauty? 123
5.3. Detection and evaluation as distinct components of mate choice 126
5.4. Mechanisms of evaluation 130
5.5. Evaluative mechanisms and perception are related: "beauty in the processing experience" 137
5.6. Plasticity and evolvability of evaluative mechanisms 137
5.7. Additional reading 138
Chapter 6. From Preferences to Choices: Mate Sampling and Mating Decisions
6.1. Introduction 139
6.2. The biological context of mate choice 142
6.3. Mate sampling algorithms in theory and practice 148
6.4. Sequential and static: fixed-threshold rules 148
6.5. Sequential and dynamic: adjustable thresholds 149
6.6. Simultaneous and static: comparative evaluation and (in)transitivity 158
6.7. Simultaneous and dynamic: best-of- n, comparative Bayes, and random walk 163
6.8. Sampling multiple traits 165
6.9. Recognition 166
6.10. Executing choices 167
6.11. The marginal cost of sampling and choice 169
6.12. Synthesis 171
6.13. Additional reading 173
Chapter 7. Mate Choice During and After Mating
7.1. Introduction 174
7.2. Remating and choice of multiple mates 177
7.3. Biasing fertilization 179
7.4. Resource allocation to offspring 191
7.5. Mate choice across stages: premating decisions and cryptic choice 194
7.6. Synthesis: what is different about cryptic choice? 196
7.7. Additional reading 200
Chapter 8. Mutual Mate Choice
8.1. Introduction 201
8.2. Reciprocal preferences 202
8.3. Social promiscuity and mutual mate choice 205
8.4. Pairing decisions: finding a social mate 213
8.5. Pair bonding 220
8.6. Mate choice in hermaphrodites 225
8.7. Synthesis 225
8.8. Additional reading 227
Chapter 9. Variation in Preferences and Choices: General Considerations
9.1. Overview 228
9.2. Scales of variation 231
9.3. Repeatability 232
9.4. Covariates of preference variation 251
9.5. Same-sex sexual behavior 260
9.6. Synthesis 261
9.7. Additional reading 262
Chapter 10. Variation I: Genetics
10.1. Overview 263
10.2. Interspecific genetic differences 265
10.3. Genetic mapping 268
10.4. Genetic variation in natural populations 270
10.5. The genetic architecture of mating preferences 279
10.6. Functional characterization of preference genes 284
10.7. Synthesis 286
10.8. Additional reading 287
Chapter 11. Variation II: Biotic and Abiotic Environment
11.1. Introduction 288
11.2. Context-sensitive effects 288
11.3. State-dependent preferences 290
11.4. Genotype-by-environment interactions 299
11.5. Synthesis 304
11.6. Additional reading 305
Chapter 12. Variation III: Social Environment and Epigenetics
12.1. Introduction 306
12.2. Social effects before birth: epigenetic and parental effects 307
12.3. Social status before and after maturity 312
12.4. Early learning: impacts on preferences 313
12.5. Mechanisms of early learning 318
12.6. Variation in early learning 324
12.7. Social experience after sexual maturity 327
12.8. Nonindependent mate choice and copying 328
12.9. Genotype by environment revisited: the instinct to learn 332
12.10. Synthesis 335
12.11. Additional reading 338
PART 2. ORIGINS, EVOLUTION, AND CONSEQUENCES
Chapter 13. Origins and Histories of Mating Preferences: Chooser Biases
13.1. Introduction 341
13.2. Preferences have histories 346
13.3. Perceptual biases 348
13.4. Biases from non-choice functions 350
13.5. Novel responses of preference mechanisms 352
13.6. Byproduct biases: novel biases shaped by current signals 353
13.7. Synthesis 354
13.8. Additional reading 357
Chapter 14. Selection on Mate Choice and Mating Preferences
14.1. Introduction 358
14.2. Selection on preferences for courter traits 359
14.3. Evolution of choosiness and mate-sampling strategies 372
14.4. When to choose: pre-versus postmating 378
14.5. Evolution of plastic preferences 381
14.6. Constraints on preference evolution 383
14.7. Coercion and choice 384
14.8. Synthesis 385
14.9. Additional reading 387
Chapter 15. Dynamic Evolution of Preferences, Strategies, and Traits
15.1. Introduction 388
15.2. Genetic covariance drives preference evolution: the Fisher-Lande-Kirkpatrick null model 389
15.3. Constraints on genetic covariance: (mis)alignment of preferences and traits 396
15.4. Adaptive coevolution 402
15.5. Mode of transmission and preference-trait coevolution 410
15.6. The limits of indirect selection 412
15.7. Mate choice in context: social and life history evolution 419
15.8. Compatibility and epistasis 424
15.9. Mate choice as an agent of trait evolution 426
15.10. Population-level consequences of mate choice 428
15.11. Coevolution of multiple traits and preferences 431
15.12. Synthesis: a unified view of preference evolution 434
15.13. Additional reading 437
Chapter 16. Mate Choice, Speciation, and Hybridization
16.1. Introduction 439
16.2. Divergence of preferences among isolated populations 440
16.3. Divergence of preferences with secondary contact 444
16.4. Reinforcement and speciation with gene flow 450
16.5. Conspecific mate preference and intraspecific mate choice 461
16.6. Mate choice and genetic exchange 462
16.7. Synthesis 471
16.8. Additional reading 472
Chapter 17. Mate Choice and Human Exceptionalism
17.1. Introduction 473
17.2. Social influences on human mating decisions 476
17.3. Variation in human mating preferences 478
17.4. Synthesis: integrating evolutionary and social-science approaches to human sexuality 480
17.5. Additional reading 481
Chapter 18. Conclusions: A Mate-Choice View of the World
18.1. The sweep of mate choice 482
18.2. From sexual selection to preference evolution 483
18.3. How we talk about mate choice 484
18.4. How we study mate choice 485
18.5. Four open questions about mate-choice mechanisms 486
18.6. Mate choice and total selection 488
18.7. Synthesis: mate choice and its consequences 492
Glossary 493
Literature Cited 505
Subject Index 617
Taxonomic Index 629
Gil G. Rosenthal is professor of biology and of ecology and evolutionary biology at Texas A&M University. He is codirector of the CICHAZ field station in central Mexico.
"This book is a marvelously insightful, thought-provoking, and stimulating synthesis of mate choice. Drawing on information from the fields of animal behavior, ecology, evolutionary genetics, and sensory physiology, it will be a source of information and inspiration for everyone interested in this fascinatingly complex topic."
– Rosemary Grant, coauthor of 40 Years of Evolution: Darwin's Finches on Daphne Major Island
"At once encyclopedic, idiosyncratic, and illuminating – a wonderful book to dip into."
– Monique Borgerhoff Mulder, coauthor of Conservation: Linking Ecology, Economics, and Culture
"This book takes an interesting and substantial look at mate choice and will become a new reference on the topic. With its exhaustive references, broad taxonomic coverage, and fresh direction, this important work is a major, significant contribution to the field."
– Richard O. Prum, Yale University
"Taking on the enormous field of mate choice, Gil Rosenthal reviews and curates research from neurobiology and endocrinology through psychology and evolutionary genetics to produce a towering work. An indispensable resource for students of animal behavior and evolution, this comprehensive and thoughtful book will anchor the study of mate choice for decades to come."
– Robert Brooks, University of New South Wales, Australia