Sexual Dimorphism PDF Download
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| Author | : Monica A. Geber |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 319 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 3662039087 |
Download Gender and Sexual Dimorphism in Flowering Plants Book in PDF, ePub and Kindle
Written by the leading experts in the field, this book examines the evolutionary advantages of gender dimorphism and sexual dimorphism in flowering plants. Divided into three sections: the first introduces readers to the tremendous variety of breeding systems and their evolution in plants and sets the stage for a consideration of the evolution of dimorphism in reproductive and non-reproductive characters. The second section deals with the evolution of secondary sexual characters, including the theory related to the evolution of sexual dimorphism and its empirical patterns, while the last section deals with the genetics of gender expression and of secondary sexual characters.
| Author | : Malte Andersson |
| Publisher | : Princeton University Press |
| Total Pages | : |
| Release | : 2019-12-31 |
| Genre | : Science |
| ISBN | : 0691207275 |
Download Sexual Selection Book in PDF, ePub and Kindle
Bright colors, enlarged fins, feather plumes, song, horns, antlers, and tusks are often highly sex dimorphic. Why have males in many animals evolved more conspicuous ornaments, signals, and weapons than females? How can such traits evolve although they may reduce male survival? Such questions prompted Darwin's perhaps most scientifically controversial idea--the theory of sexual selection. It still challenges researchers today as they try to understand how competition for mates can favor the variety of sex-dimorphic traits. Reviewing theoretical and empirical work in this very active field, Malte Andersson, a leading contributor himself, provides a major up-to-date synthesis of sexual selection. The author describes the theory and its recent development; examines models, methods, and empirical tests; and identifies many unsolved problems. Among the topics discussed are the selection and evolution of mating preferences; relations between sexual selection and speciation; constraints on sexual selection; and sex differences in signals, body size, and weapons. The rapidly growing study of sexual selection in plants is also reviewed. This volume will interest students, teachers, and researchers in behavioral ecology and evolutionary biology.
| Author | : Hiroshi Moriyama |
| Publisher | : BoD – Books on Demand |
| Total Pages | : 154 |
| Release | : 2013-03-27 |
| Genre | : Medical |
| ISBN | : 9535110756 |
Download Sexual Dimorphism Book in PDF, ePub and Kindle
Sexual Dimorphism- Various biological studies on the subject of sex differences have been published. The subjects of these studies are not only humans, but also other mammals, birds, amphibians, insects, extending to ostracoda in the Paleozoic era. Moreover, original methods in individual studies have been used. This book provides convincing reasons which explain sex differences. The book also shows that, even if considered that some living things do not have sex differences, in reality they do. The somewhat different data on sex differences in this book will offer new ideas not only to life scientists and biologists, but social and cultural scientists as well.
| Author | : Joseph Thomas Cunningham |
| Publisher | : |
| Total Pages | : 344 |
| Release | : 1900 |
| Genre | : Evolution |
| ISBN | : |
Download Sexual Dimorphism in the Animal Kingdom Book in PDF, ePub and Kindle
| Author | : Ian Rowley |
| Publisher | : Oxford University Press, USA |
| Total Pages | : 0 |
| Release | : 1997 |
| Genre | : Maluridae |
| ISBN | : 9780198546900 |
Download Fairy-wrens and Grasswrens Book in PDF, ePub and Kindle
The brilliantly coloured Fairy-wrens and enigmatic Grasswrens form a group of birds (Family Maluridae) that occur only in Australia and New Guinea. They are small -- the largest weigh no more than 40 grams, while the smallest emu-wrens are only 5 -6 grams -- and feed mainly on the ground or inlow vegetation. Most males are brightly coloured, while the female plumage is duller. They have a fascinating social organization, with resident social groups consisting of long-lasting social pairs and their progeny, retained long after independence. All members of the group help to raise theyoung. Social pairing, however, does not preclude promiscuity, and most males seek matings outside the group. Although their cocked tails and general appearance reminded early Australian settlers of wrens back home, and the English name has persisted, Fairy-wrens and Grasswrens are not closelyrelated to wrens (Troglodytidae). In the first eight chapters, the authors look at the family as a whole, describing their taxonomy, evolution, biology, behaviour, and conservation. These chapters are include black-and-white drawings showing typical behaviour, as well summary graphs and tables. Then follow the twenty-five speciesaccounts, each one giving comprehensive information on the bird in its natural state. Distribution maps and sonograms are included. All species are fully illustrated in colour, in superb plates by Peter Marsack especially commissioned for this volume.
| Author | : Rui F. Oliveira |
| Publisher | : Cambridge University Press |
| Total Pages | : 490 |
| Release | : 2008-03-13 |
| Genre | : Medical |
| ISBN | : 1139469525 |
Download Alternative Reproductive Tactics Book in PDF, ePub and Kindle
The study of alternative reproductive tactics (the behavioural strategies used by individuals to increase their reproductive success) is an evolutionary puzzle, and one of great interest to researchers. For instance, why do some males guard both nest and eggs, while others sneak into nests while pairs are spawning and fertilise those eggs? The field offers a special opportunity to study the evolution and functional causes of phenotypic variation, which is a general problem in the field of evolutionary biology. By integrating both mechanistic (psychological) and evolutionary (behavioural ecology) perspectives and by covering a great diversity of species, Alternative Reproductive Tactics addresses this integrated topic of longstanding interest, bringing together a multitude of otherwise scattered information in an accessible form that is ideal for graduate students and researchers.
| Author | : Gilbert Herdt |
| Publisher | : Princeton University Press |
| Total Pages | : 357 |
| Release | : 2020-10-27 |
| Genre | : History |
| ISBN | : 194213052X |
Download Third Sex, Third Gender Book in PDF, ePub and Kindle
Most modern discussions of the relationship of biological sex to gender presuppose that there are two genders, male and female, founded on the two biological sexes. But not all cultures share this essentialist assumption, and even Western societies have not always embraced it. Bringing together historical and anthropological studies, Third Sex, Third Gender challenges the usual emphasis on sexual dimorphism and reproduction, providing a unique perspective on the various forms of socialization of people who are neither “male” nor “female.” The existence of a third sex or gender enables us to understand how Byzantine palace eunuchs and Indian hijras met the criteria of special social roles that necessitated practices such as self-castration, and how intimate and forbidden desires were expressed among the Dutch Sodomites in the early modern period, the Sapphists of eighteenth-century England, or the so-called hermaphrodite-homosexuals of nineteenth-century Europe and America. By contextualizing these practices and by allowing these bodies, meanings, and desires to emerge, Third Sex, Third Gender provides a new way to think about sex and gender systems that is crucial to contemporary debates within the social sciences.
| Author | : Society for the Study of Human Biology. Symposium |
| Publisher | : Taylor & Francis Group |
| Total Pages | : 394 |
| Release | : 1985 |
| Genre | : Science |
| ISBN | : |
Download Human Sexual Dimorphism Book in PDF, ePub and Kindle
| Author | : Daphne J. Fairbairn |
| Publisher | : OUP Oxford |
| Total Pages | : 280 |
| Release | : 2008-11-06 |
| Genre | : Science |
| ISBN | : 0199545588 |
Download Sex, Size and Gender Roles Book in PDF, ePub and Kindle
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 females in the natural world.
| Author | : Daphne J. Fairbairn |
| Publisher | : OUP Oxford |
| Total Pages | : 280 |
| Release | : 2007-07-05 |
| Genre | : Science |
| ISBN | : 0191526088 |
Download Sex, Size and Gender Roles Book in PDF, ePub and Kindle
Why do males and females frequently differ so markedly in body size and morphology?lSex, Size, and Gender Roles is the first book to investigate the genetic, developmental, and physiological basis of sexual size dimorphism found within and among the major taxonomic groups of animals. Carefully edited by a team of world-renowned specialists in the field to ensure a coherence of style and approach between chapters, it presents a compendium of studies into the evolution, adaptive significance, and developmental basis of gender differences in body size and morphology. Adaptive hypotheses allude to gender-specific reproductive roles and associated differences in trophic ecologies, life history strategies, and sexual selection. This "adaptationist" approach is balanced by more mechanistic studies of the genetic, developmental and physiological basis of sexual size dimorphism to provide a comprehensive and authoritative overview of the subject. Throughout the volume the emphasis is on sexual dimorphism in overall size; however, the scope of enquiry encompasses gender differences in body shape, the size and structure of secondary sexual characteristics, patterns of growth (ontogeny), and patterns of gene regulation. This advanced, research level text is suitable for graduate level students and researchers in the fields of evolutionary biology, behavioural ecology, physiology, developmental biology, and genetics. It will also be of relevance and use to non-biologists from fields such as anthropology and gender studies.
