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Sperm Competition and the Evolution of Animal Mating systems - 1st Edition - ISBN: 9780126525700, 9780323143134

Sperm Competition and the Evolution of Animal Mating systems

1st Edition

Editor: Robert L. Smith
eBook ISBN: 9780323143134
Imprint: Academic Press
Published Date: 11th December 1984
Page Count: 710
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Sperm Competition and the Evolution of Animal Mating Systems describes the role of sperm competition in selection on a range of attributes from gamete morphology to species mating systems. This book is organized into 19 chapters and begins with the conceptualization of sperm competition as a subset of sexual selection and its implications for the insects. The following chapter describes the relationship between multiple mating and female fitness, with an emphasis on determining the conditions under which selection on females is likely to counteract selection on males for avoiding sperm competition. Other chapters consider the female perspective on sperm competition; the evolutionary causation at the level of the individual male gamete; and the correlation of high paternal investment and sperm precedence in the insects. The remaining chapters are arranged phylogenetically and explore the sperm competition in diverse animal taxa, such as the Drosophila, Lepidoptera, spiders, amphibians, and reptiles. These chapters also cover the evolution of direct versus indirect sperm transfer among the arachnids or the problem for kinship theory presented by multiple mating and sperm competition in the Hymenoptera. This book further discusses the remarkable potential for sperm competition among certain temperate bat species whose females store sperm through winter hibernation and the mixed strategies and male-caused female genital trauma as possible sperm competition adaptations in poeciliid fishes. The concluding chapter examines the predictions concerning testes size and mating systems in the primates and the possible role of sperm competition in human selection. This book is of great value to reproductive biologists and researchers.

Table of Contents

List of Contributors


1. Sperm Competition and the Evolution of Animal Mating Strategies

I. Introduction

II. The Evolution of the Two Sexes

III. Gamete Investment Versus Other Reproductive Effort

IV. The Evolution of Internal Fertilization

V. Sperm Competition and Conflicting Evolutionary Forces

VI. Female Interests (Mate Choice, Diversity of Progeny, Sperm Depletion, Paternal Investment)

VII. Resolution of Sexual Conflict: Evolutionary Dynamics of Sperm Competition Systems

VIII. Expenditure on Paternity Assurance

IX. Multiple Versus Single Ejaculation

X. Sperm Competition and Male-male Disputes

XI. Sperm Size and Number With Internal Fertilization

XII. Summary


2. Male Sperm Competition Avoidance Mechanisms: The Influence of Female Interests

I. Introduction

II. Costs to Females

III. The Resolution of Conflicting Male and Female Interests

IV. Natural History Patterns and Model Parameters

V. Summary


3. Sperm in Competition

I. Introduction

II. Intraejaculate Competition and Male/Gamete Conflict

III. Interejaculate Competition

IV. Competition Between Choosing Females and Sperm

V. Competition Among Symbiotic Genomes

VI. Discussion and Conclusions

VII. Summary


4. Male Mating Effort, Confidence of Paternity, and Insect Sperm Competition

I. Introduction

II. Mating Effort, Parental Effort, and the Evolution of Sexual Differences

III. Evolution of Nonpromiscuous Mating Effort and Parental Effort

IV. Can Mating Effort and Parental Effort Be Distinguished?

V. Paternal Investment and Confidence of Paternity in Insects

VI. Insect Sperm Competition Studies

VII. Paternal Investment and Sperm Precedence

VIII. Paternity-ensuring Mechanisms

IX. Discussion and Conclusions

X. Summary


5. Alternative Hypotheses for Traits Believed to Have Evolved by Sperm Competition

I. Introduction

II. The Dorsal Clamp of Male Panorpa

III. Other Traits Often Viewed as Evolved by Sperm Competition

IV. Methodology Used to Study Evolved Function

V. Summary


6. Sperm Transfer and Utilization Strategies in Arachnids: Ecological and Morphological Constraints

I. Introduction

II. Indirect Sperm Transfer Without Pair Formation (Group II)

III. Indirect Sperm Transfer With Pair Formation (Group I)

IV. Direct Sperm Transfer (Group III)

V. Summary


7. Evolution of Sperm Priority Patterns in Spiders

I. Introduction

II. Current Knowledge on Spider Sperm Priority

III. Phylogenetic Constraints

IV. Sperm Priority: The Female Perspective

V. Sperm Precedence: The Male Perspective

VI. Combined Perspectives

VII. Summary


8. Sperm Competition and the Evolution of Odonate Mating Systems

I. Introduction

II. Sexual Selection and Sperm Competition

III. Demonstrating Sperm Competition in Odonates

IV. Sperm Displacement Ability

V. Sperm Competition and Odonate Postcopulatory Behavior

VI. Odonate Mating Systems

VII. Summary


9. Multiple Mating and Sperm Competition in the Lepidoptera

I. Introduction

II. Reproductive Anatomy and Sperm Dynamics

III. Mating Frequency in Natural Populations

IV. Sperm Priority Patterns and Evolution of Mating Behavior

V. Summary


10. Sperm Transfer and Use in the Multiple Mating System of Drosophila

I. Introduction

II. Sperm Storage and Utilization

III. Repeated Mating

IV. Mechanisms of Sperm Predominance

V. Evolutionary Significance

VI. Summary


11. Sperm Competition, Kinship, and Sociality in the Aculeate Hymenoptera

I. Introduction

II. Hymenoptera Reproductive Biology

III. Sperm Competition in the Aculeata

IV. Social Consequences of Sperm Competition

V. Conclusion: What Is To Be Done?

VI. Summary


12. Sperm Competition in Poeciliid Fishes

I. Introduction

II. Biology of Poeciliid Fishes

III. Behavior of Poeciliid Fishes

IV. Multiple Insemination

V. Sperm Replacement

VI. The Role of Sperm Competition in the Evolution of Poeciliid Reproductive Traits

VII. Summary


13. Sperm Competition in Amphibians

I. Introduction

II. Anurans

III. Apodans

IV. Urodeles

V. Mating in Hynobiids

VI. Testing for Sperm Competition

VII. Summary


14. Potential for Sperm Competition in Reptiles: Behavioral and Physiological Consequences

I. Introduction

II. Prerequisites for Sperm Competition in Reptiles

III. Sperm Competition in Females and Its Evolutionary Consequences for Males

IV. Factors Influencing the Inclination to Mate More Than Once

V. Summary


15. Sperm Competition in Apparently Monogamous Birds

I. Introduction

II. Physiological Considerations

III. Copulatory Behavior in Birds

IV. Forced Copulation and Sperm Competition in Waterfowl

V. Extrapair Copulation in Other Monogamous Birds

VI. Extrapair Copulation in Partially Monogamous Birds

VII. Discussion

VIII. Summary


16. Sperm Competition in Muroid Rodents

I. Introduction

II. Reproductive Systems in Rodents

III. Sperm Competition, Order Effects, and Differential Fertilizing Capacity

IV. Implications and Extensions of Studies of Mating Order and Differential Fertilizing Capacity

V. Ejaculation Frequency and Sperm Competition

VI. Simultaneous Sperm Competition

VII. Implications for the Evolution of Mating Strategies

VIII. Conclusions and Directions for Further Research

IX. Summary


17. Sperm Competition? The Case of Vespertilionid and Rhinolophid Bats

I. Introduction

II. Chastity Plugs?

III. "Disco" Mating System

IV. Sperm Competition?

V. What Next?

VI. Summary


18. Sperm Competition, Testes Size, and Breeding Systems in Primates

I. Introduction

II. Methods

III. Results

IV. Discussion

V. Summary


19. Human Sperm Competition

I. Introduction

II. Human Sperm Competition in Context

III. Potential Female Benefits from Facultative Polyandry

IV. Possible Female Costs of Facultative Polyandry

V. Evidence for Human Sperm Competition

VI. Comparative Hominoid Reproductive and Social Biology

VII. Human Attributes Possibly Evolved in the Context of Sperm Competition

VIII. Sperm Competition and Human Evolution

IX. Summary




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© Academic Press 1984
11th December 1984
Academic Press
eBook ISBN:

About the Editor

Robert L. Smith

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