Download Free Sexual Selection With Condition Dependent Handicaps And The Evolution Of Genetic Covariances Book in PDF and EPUB Free Download. You can read online Sexual Selection With Condition Dependent Handicaps And The Evolution Of Genetic Covariances and write the review.

Sexual selection is recognized as being responsible for some of the most extravagant morphologies and behaviors in the natural world, as well as a driver of some of the most rapid evolution. While Charles Darwin’s theory is now a fundamental component of modern evolutionary biology, the impact of genotype-by-environment interactions on sexual selection has thus far received little attention. This book represents the first comprehensive analysis of the role genotype-by-environment interactions play in sexual selection and the potential implications that they have for the evolutionary process. The Editors have identified 13 topics that currently define the field and shed light on the impacts of these interactions on sexual selection. This includes key topics, such as resolving the lek paradox and how genotype-by-environmental interactions can compromise the honesty of sexual signals. The volume also outlines key questions that remain unanswered and provides a comprehensive guide to analyzing genotype-by-environment interactions. The mix of theory, empirical studies, and practical instructions from world leading experts make this book a particularly potent and definitive guide on the topic. It will be of interest to evolutionary biologists, spanning from genomicists to behaviorists. “This is a very timely book, covering a topic that should change the way we think about sexual selection. The contributors are all leaders and the topics should provide guidance to many PhD projects in the years to come. GEI is increasingly shown to be important, and it seems likely that it is critical in species where sexual selection is operating. This book is likely to help revitalize the study of sexual selection.” Professor Allen Moore, The University of Georgia “GEIs fascinate evolutionary biologists, but the unique consequences for sexually selected traits have been neglected - until now. This multi-authored book comprehensively explains key theoretical concepts, handles practical ‘how to’ issues and uses classic case studies to illustrate the value of studying GEIs. It is a must read for everyone interested in sexual selection.” Professor Michael Jennions, The Australian National University
This collection of 20 chapters written by leading evolutionary biologists from around the globe provides a fascinating insight into the patterns and causes of differences between males and femails in the natural world.
Genetic studies aimed at understanding the origin of species are dominating major scientific journals. In the past decade, genetic tools that were previously available only in model systems have become accessible to investigators working on nearly all species. Concurrent with these technical advances has been an increase in understanding of both the importance of considering the ecological context of speciation and testing hypotheses about causes for species formation. Many recent studies suggest a prominent role of sexual selection in species formation. These advances have produced a need for a synthesis of what we now understand about speciation, and perhaps more importantly, where we should go from here. In this volume, several leading investigators and rising stars have contributed reviews and/or novel primary research findings aimed at understanding the ultimate mystery on which Darwin named his most famous and influential book. Fundamental to the origin of species is the evolution of mate choice systems. This collection of papers discusses burgeoning genetic, evolutionary, and ecological approaches to understanding the origins of mating discrimination and causes of premating reproductive isolation both within and between species. The individual contributions span a wide spectrum of disciplines, taxa, and ideas (some controversial). This synthesis brings together several of the most recent ideas with supporting empirical data. This book will be of particular interest to both undergraduate and postgraduate researchers and students and researchers in the field of evolutionary biology, genetics and animal behaviour.
This book presents the first unified conceptual and statistical framework for understanding the evolution of reproductive strategies. Using the concept of the opportunity for sexual selection, the authors illustrate how and why sexual selection, though restricted to one sex and opposed in the other, is one of the strongest and fastest of all evolutionary forces. They offer a statistical framework for studying mating system evolution and apply it to patterns of alternative mating strategies. In doing so, they provide a method for quantifying how the strength of sexual selection is affected by the ecological and life history processes that influence females' spatial and temporal clustering and reproductive schedules. Directly challenging verbal evolutionary models that attempt to explain reproductive behavior without quantitative reference to evolutionary genetics, this book establishes a more solid theoretical foundation for the field. Among the weaknesses the authors find in the existing data is the apparent ubiquity of condition-dependent mating tactics. They identify factors likely to contribute to the evolution of alternative mating strategies--which they argue are more common than generally believed--and illustrate how to measure the strength of selection acting on them. Lastly, they offer predictions on the covariation of mating systems and strategies, consider the underlying developmental biology behind male polyphenism, and propose directions for future research. Informed by genetics, this is a comprehensive and rigorous new approach to explaining mating systems and strategies that will influence a wide swath of evolutionary biology.
Just over one hundred and thirty years ago Charles Darwin, in The Descent of Man and Selection in Relation to Sex (1871), developed remarkably accurate conclusions about man's ancestry, based on a review of general comparative anatomy and psychology in which he regarded sexual selection as a necessary part of the evolutionary process. But the attention of biologists turned to the more general concept of natural selection, in which sexual selection plays a complex role that has been little understood. This volume significantly broadens the scope of modern evolutionary biology by looking at this important and long neglected concept of great importance. In this book, which is the first full discussion of sexual selection since 1871, leading biologists bring modern genetic theory and behavior observation to bear on the subject. The distinguished authors consider many aspects of sexual selection in many species, including man, within the context of contemporary evolutionary theory and research. The result is a remarkably original and well-rounded view of the whole concept that will be invaluable especially to students of evolution and human sexual behavior. The lucid authority of the contributors and the importance of the topic will interest all who share in man's perennial fascination with his own history. The book will be of central importance to a wide variety of professionals, including biologists, anthropologists, and geneticists. It will be an invaluable supplementary text for courses in vertebrate biology, theory of evolution, genetics, and physical anthropology. It is especially important with the emergence of alternative explanations of human development, under the rubric of creationism and doctrines of intelligent design.
I first examined the diversity and interactions of sexual selection mechanisms. Among these, male mate choice is especially poorly understood. By synthesizing relevant theory and data, I found that male choosiness is predicted and observed in a wide variety of taxa. I also investigated the co-occurrence of multiple sexual selection mechanisms in seven species of piophilid flies. Focusing on one species, the sexually dimorphic fly Prochyliza xanthostoma, I investigated how multiple sexual selection mechanisms interact. I found that males with relatively elongated heads were at a disadvantage in combat, but were attractive to females and transferred more sperm. Thus, contrary to long-held assumptions, multiple mechanisms of sexual selection may be in conflict. Moreover, P. xanthostoma females obtained direct fitness benefits by ingesting part of the ejaculate, which suggests that male head shape may be an honest signal of mate quality. I used both theoretical and empirical approaches to investigate the evolutionary consequences of sexual selection. Existing theory predicts positive allometry in most sexually selected traits. However, I developed new theory (with Troy Day) which suggests that allometric patterns (and associated phenotypic parameters) are difficult to predict without detailed knowledge of fitness functions. I also developed theory on the evolution of genetic architecture in sexually selected traits, predicting that intra-locus sexual conflict may select for genomic imprinting, favouring silencing of trait alleles inherited from the weakly-selected or opposite-sex parent. I used P. xanthostoma to compare the phenotypic expression and genetic architecture of sexually dimorphic traits employed in sexual competition with other traits that are not. Male head shape exhibited strong condition dependence, potentially explaining the correlation between male head shape and ejaculate size. As predicted by theory, condition dependence increased with the degree of trait exaggeration. Results also suggested an inter-sexual genetic correlation for condition dependence. Trait inter-sexual genetic correlation decreased with degree of trait sexual dimorphism, as predicted by evolutionary models. However, two male sexual traits exhibited striking differences between maternal and paternal heritabilities. These patterns contradict ordinary Mendelian assumptions, but support the new imprinting theory. In this dissertation, I ask how sexual selection shapes the phenotypes and genetic architectures of sexually dimorphic traits.
The Pied Flycatcher is one of Europe's best-studied species. The first detailed work on it was begun in the 1930s by German ornithologists, but it was Lars von Haartman's Finnish study that both established long-term research on the species and founded many of the central themes of modern ornithology. Soon after, in the late 1940s, Bruce Campbell set up an intensive project in southwest England, which also still runs to this day. Many other eminent ornithologists followed and in 1979 Arne Lundberg and Rauno Alatalo started their own work in Sweden, Finland and latterly the north of England. A Palaearctic migrant, the Pied Flycatcher is notable for its very variable male plumage and complex territorial and polygynous breeding system. They take readily to nest boxes and have provided excellent opportunities for the study of a wide range of biological problems. This broad review of the species provides not only a detailed biology of this fascinating little bird, but a commentary on many of the most interesting problems in bird behaviour and ecology. Illustrated by Tomas Part.
Parents often disagree with their children over their choice of partner. Although the reasons may vary the outcome is very often one of conflict – a conflict peculiar to the human species. For the first time in one volume, Sexual Selection under Parental Choice employs an evolutionary perspective to understand this conflict and explore its implications. Covering recent developments in the field of evolutionary psychology, Menelaos Apostolou reveals the extent of parental attempts to control the mating decisions of their offspring and investigates the qualities parents seek in prospective in-laws. Children’s attempt to escape this control can lead to practices such as foot-binding and clitoridectomy or, in postindustrial societies, more subtle forms of coercion and manipulation. Apostolou demonstrates that much of human mating behavior has been shaped by parental choice and that parents have a significant influence in sexual selection: the traits they favour in their children’s mates are selected and increase in frequency in the population. Sexual Selection under Parental Choice will be ideal reading for researchers and advanced students of evolutionary, developmental and social psychology, as well as other related disciplines such as social anthropology, sociology and the biological sciences.
Biologists have known for decades that many traits involved in competition for mates or other resources and that influence mate choice are exaggerated, and their expression is influenced by the individuals’ ability to tolerate a variety of environmental and social stressors. Evolution of Vulnerability applies this concept of heightened sensitivity to humans for a host of physical, social, psychological, cognitive, and brain traits. By reframing the issue entirely, renowned evolutionary psychologist David C. Geary demonstrates this principle can be used to identify children, adolescents, or populations at risk for poor long-term outcomes and identify specific traits in each sex and at different points in development that are most easily disrupted by exposure to stressors. Evolution of Vulnerability begins by reviewing the expansive literature on traits predicted to show sex-specific sensitivity to environmental and social stressors, and details the implications for better assessing and understanding the consequences of exposure to these stressors. Next, the book reviews sexual selection—mate competition and choice—and the mechanisms involved in the evolution of condition dependent traits and the stressors that can undermine their development and expression, such as poor early nutrition and health, parasites, social stress, and exposure to man-made toxins. Then it reviews condition dependent traits (physical, behavioral, cognitive, and brain) in birds, fish, insects, and mammals to demonstrate the ubiquity of these traits in nature. The focus then turns to humans and covers sex-specific vulnerabilities in children and adults for physical traits, social behavior, psychological wellbeing, and brain and cognitive traits. The sensitivity of these traits is related to exposure to parasites, poor nutrition, social maltreatment, environmental toxins, chemotherapy, and Alzheimer’s disease, among others. The book concludes with an implications chapter that outlines how to better assess vulnerabilities in children and adults and how to more fully understand how, why, and when in development some types of environmental and social stressors are particularly harmful to humans. Describes evolved sex differences, providing predictions on the traits that will show sex-specific vulnerabilities Presents an extensive review of condition-dependent traits in non-human species, greatly expanding existing reviews published in scientific journals, and more critically, extending these to humans Applies condition-dependent traits to humans to identify children, adolescents, or populations at risk for poor long-term outcomes