Table of Contents
1. An Introduction to the Problem
Operational Definitions
A Survey of Animal Genitalia
Genitalic Extravagance
2. Previous Hypotheses: Their Status to Date
Lock and Key
Genitalic Recognition
Pleiotropism
Mechanical Conflict of Interest
Summary
3. Tests of the Lock and Key and Genitalic Recognition Hypotheses
Lock and Key
Species Isolation
4. Tests of the Other Hypotheses and a Summary
Pleiotropism
Arnold's Modification
Mechanical Conflict of Interest
Summary
5. Sexual Selection by Female Choice
The Function of Copulation
The Female Choice Hypothesis
Effects of Female Choice on Genitalia
Mechanical Fit of Genitalia
Genitalia and Overall Male Fitness
Major Evolutionary Patterns That Are Explained
Relationships to Other Hypotheses
6. Male-Male Genitalic Genitalic Competition
Sperm Displacement
clasping Devices
Male Adaptations That Short-cut Female Choice
Topology of Female Reproductive Systems too Summary
7. Female Discretion after Genitalic Genitalic Contact
Intromission
Insemination
Sperm Transport
Sperm Destruction, Storage, and Activation
Egg Maturation and Fetal Nourishment
Oviposition Rate
Tendency to Remate
Summary
8. Remating by Females
Strict Behavioral Monogamy Induced by Males
Copulatory Plugs
Antiaphrodisiacs
Short-lived Females
Monogamy in Termites
Determining Remating Frequencies
The Best Field Data on Remating Frequencies
Heliconius Butterflies: A Test Case
Sex Ratios and Sperm Exhaustion
Summary
9. Apparent Contradictions of the Female Choice Hypothesis
Interspecific Differences in Female Genitalia
Lack of Species Specificity in Genitalia
High Paternal Investment in Offspring
Intraspecific Uniformity of Genitalia
Spermatophore Complexity and Male-Female Contact
Infrequency of Postcopulatory courtship
Patterns of Genitalic change
Summary
10. Use of Genitalia as Stimulators
External Movements
Intromission without Insemination
Movements within the Female
Indirect Evidence
11. specialized Nongenitalic Male Structures
12. Conclusions and an Overview
References
Index
