Sperm Competition In Butterflies PDF Download
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Author | : Mamoru Watanabe |
Publisher | : Springer |
Total Pages | : 179 |
Release | : 2016-01-06 |
Genre | : Science |
ISBN | : 4431559450 |
Download Sperm Competition in Butterflies Book in PDF, ePub and Kindle
This book describes about 30 years of theoretical, empirical, and experimental work on butterfly sperm competition. It considers the reproductive morphology and sperm utilisation interests of males and females, which shape the mating tactics of each sex. Females of most butterfly species mate multiple times throughout their lives. The reasons are explored, as well as the numerous adaptations males have developed to prevent future mating and fertilisation by the sperm of other males. In particular, this volume focuses on the role of apyrene sperm. Eupyrene and apyrene sperm dimorphism is most likely a key factor in sperm competition, and the study in butterflies promotes understanding of sexual selection across animal species with sperm polymorphism. This book, describing the evolutionary causes and consequences of the sperm competition in butterflies, is a recommended read for students of behavioural ecology.
Author | : Penelope Anne Cook |
Publisher | : |
Total Pages | : |
Release | : 1996 |
Genre | : |
ISBN | : |
Download Sperm Competition in Butterflies and Moths Book in PDF, ePub and Kindle
Author | : Robert L. Smith |
Publisher | : Elsevier |
Total Pages | : 710 |
Release | : 2012-12-02 |
Genre | : Science |
ISBN | : 032314313X |
Download Sperm Competition and the Evolution of Animal Mating systems Book in PDF, ePub and Kindle
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.
Author | : Penelope Anne COOK |
Publisher | : |
Total Pages | : 0 |
Release | : 1996 |
Genre | : |
ISBN | : |
Download Sperm Competition in Butterflies and Moths: Lepidoptera Book in PDF, ePub and Kindle
Author | : Leigh W. Simmons |
Publisher | : Princeton University Press |
Total Pages | : 452 |
Release | : 2001-11-11 |
Genre | : Science |
ISBN | : 0691059888 |
Download Sperm Competition and Its Evolutionary Consequences in the Insects Book in PDF, ePub and Kindle
One hundred years after Darwin considered how sexual selection shapes the behavioral and morphological characteristics of males for acquiring mates, Parker realized that sexual selection continues after mating through sperm competition. Because females often mate with multiple males before producing offspring, selection favors adaptations that allow males to preempt sperm from previous males and to prevent their own sperm from preemption by future males. Since the 1970s, this area of research has seen exponential growth, and biologists now recognize sperm competition as an evolutionary force that drives such adaptations as mate guarding, genital morphology, and ejaculate chemistry across all animal taxa. The insects have been critical to this research, and they still offer the greatest potential to reveal fully the evolutionary consequences of sperm competition. This book analyzes and extends thirty years of theoretical and empirical work on insect sperm competition. It considers both male and female interests in sperm utilization and the sexual conflict that can arise when these differ. It covers the mechanics of sperm transfer and utilization, morphology, physiology, and behavior. Sperm competition is shown to have dramatic effects on adaptation in the context of reproduction as well as far-reaching ramifications on life-history evolution and speciation. Written by a top researcher in the field, this comprehensive, up-to-date review of the evolutionary causes and consequences of sperm competition in the insects will prove an invaluable reference for students and established researchers in behavioral ecology and evolutionary biology.
Author | : Tim Birkhead |
Publisher | : Harvard University Press |
Total Pages | : 300 |
Release | : 2000 |
Genre | : Science |
ISBN | : 9780674006669 |
Download Promiscuity Book in PDF, ePub and Kindle
Birkhead reveals a world in which males and females vie with each other as they strive to maximize their reproductive success. Color illustrations.
Author | : Michelle Jeanette Solensky |
Publisher | : |
Total Pages | : 272 |
Release | : 2003 |
Genre | : |
ISBN | : |
Download Reproductive Fitness in Monarch Butterflies, Danaus Plexippus Book in PDF, ePub and Kindle
Author | : Todd K. Shackelford |
Publisher | : Springer |
Total Pages | : 0 |
Release | : 2010-10-29 |
Genre | : Science |
ISBN | : 9781441939173 |
Download Sperm Competition in Humans Book in PDF, ePub and Kindle
In species with internal fertilization, sperm competition occurs when the sperm of two or more males simultaneously occupy the reproductive tract of a female and compete to fertilize an egg (Parker, 1970). A large body of empirical research has demonstrated that, as predicted by sperm competition theory, males and females in many species possess anatomical, behavioral, and physiological adaptations that have evolved to deal with the adaptive challenges associated with sperm competition. Moreover, in recent years, evolutionary biologists and psychologists have begun to examine the extent to which sperm competition may have been an important selective pressure during human evolution. Some research has suggested that male humans, like males of many bird, insect, and rodent species, might be able to adjust the number of sperm they inseminate according to the risk of sperm competition. Other research has examined whether such responses might be accompanied by psychological changes that motivate human males to pursue copulations when the risk of sperm competition is high. Furthermore, there is research suggesting that aspects of human penile anatomy might function to enhance success in sperm competition. Much of this work has been controversial; some of the findings have been disputed and others have been greeted with skepticism. However, the idea that some aspects of human psychology and behavior might best be understood as adaptations to sperm competition remains intriguing and, in certain cases, very persuasive.
Author | : Jae C. Choe |
Publisher | : Cambridge University Press |
Total Pages | : 401 |
Release | : 1997-06-12 |
Genre | : Psychology |
ISBN | : 0521580293 |
Download The Evolution of Mating Systems in Insects and Arachnids Book in PDF, ePub and Kindle
Insects and arachnids display the most impressive diversity of mating and social behaviour among all animals. This book investigates sexual competition in these groups, and the variety of ways in which males and females pursue, persuade, manipulate, control and help one another, enabling us to gain a better understanding of how conflicts and confluences of interest evolve together. Each chapter provides a comprehensive review of mating systems in particular insect and arachnid groups, discusses intrinsic and extrinsic factors responsible for observed mating strategies, and suggests fruitful avenues for further research. The book culminates in a synthesis, reviewing the date in terms of the theory of sexual conflict. This broad-based book will be of immense value to students and researchers interested in reproductive strategies, behavioural ecology, entomology and arachnology.
Author | : Scott S. Pitnick |
Publisher | : Academic Press |
Total Pages | : 683 |
Release | : 2008-11-21 |
Genre | : Science |
ISBN | : 0080919871 |
Download Sperm Biology Book in PDF, ePub and Kindle
Sperm Biology represents the first analysis of the evolutionary significance of sperm phenotypes and derived sperm traits and the possible selection pressures responsible for sperm-egg coevolution. An understanding of sperm evolution is fast developing and promises to shed light on many topics from basic reproductive biology to the evolutionary process itself as well as the sperm proteome, the sperm genome and the quantitative genetics of sperm. The Editors have identified 15 topics of current interest and biological significance to cover all aspects of this bizarre, fascinating and important subject. It comprises the most comprehensive and up-to-date review of the evolution of sperm and pointers for future research, written by experts in both sperm biology and evolutionary biology. The combination of evolution and sperm is a potent mix, and this is the definitive account. The first review survey of this emerging field Written by experts from a broad array of disciplines from the physiological and biomedical to the ecological and evolutionary Sheds light on the intricacies of reproduction and the coevolution of sperm, egg and reproductive behavior