Theoretical Elements of Sex Ratio Evolution PDF Download
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Author: Joseph William Stubblefield
Publisher:
ISBN:
Category : West Virginia
Languages : en
Pages :
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Author: Joseph William Stubblefield
Publisher:
ISBN:
Category : West Virginia
Languages : en
Pages :
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Book Description
Author: Samuel Karlin
Publisher: Princeton University Press
ISBN: 9780691084121
Category : Science
Languages : en
Pages : 336
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Book Description
This book deals with a key area of population genetics: the ratio of the sexes in a population, or the allocation of resources to male versus female reproductive function. Samuel Karlin and Sabin Lessard establish the formal theoretical aspects of the evolution of sex ratio within the constraints of genetic mechanisms of sex determination. Their results generalize and unify existing work on the topic, strengthening previous conceptions in some cases and, in other instances, offering new directions of research. There are two main approaches to understanding the causes and effects of sex ratio. One approach focuses on the optimization and adaptive functions of sex allocation, while the other emphasizes the consequences of genetic sex determination mechanisms. In discussing the utility of these two approaches, Professors Karlin and Lessard examine the principal sex-determining mechanisms and facts involved in sex ratio representations, the various genetic and environmental factors that contribute to adaptive sex expression, and the evolution of sex determining systems and controls. From a population genetic perspective, the authors derive evolutionary properties in support of the high incidence of 1:1 sex ratio in natural populations and investigate the conditions that can explain the occurrence of biased sex ratio.
Author: Eric L. Charnov
Publisher: Princeton University Press
ISBN: 0691210055
Category : Science
Languages : en
Pages : 369
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Book Description
This book is the first comprehensive treatment of sex allocation from the standpoint of modern evolutionary theory. It shows how the determination of sex ratio, resource allocation to sperm versus egg within simultaneous hermaphroditism, and the evolution of sex reversal can he explained as examples of a single process. The genetical theory, developed mostly with graphical arguments, also specifies when hermaphroditism and dioecy are themselves evolutionary stable. The work balances theory with field and laboratory research, providing critical tests of the theory by empirical studies of sex ratio in parasitoid wasps and mites, sex reversal in shrimp and coral reef fish, and allocation of resources to pollen versus seeds in higher plants. In addition, the author oilers an encyclopedic review of the field and laboratory work of other scientists, reviews many as yet untested hypotheses in sex allocation, and points toward numerous plant and animal systems that hold promise for future tests.
Author: Samuel Karlin
Publisher:
ISBN: 9780608063027
Category :
Languages : en
Pages : 330
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Book Description
Author: Joseph William Stubblefield
Publisher:
ISBN:
Category : Evolution
Languages : en
Pages : 556
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Author: Ian Hardy
Publisher:
ISBN: 9780511069932
Category : Sex determination, Genetic
Languages : en
Pages : 424
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Book Description
Sex ratios, the proportions of males and females in any given species, are important in evolutionary and behavioural ecology. This volume explores the context to and methods for many aspects of research on sex ratios, and will be an indispensable reference for all those working in this area.
Author: Samuel Karlin
Publisher: Princeton University Press
ISBN: 069121011X
Category : Science
Languages : en
Pages : 333
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Book Description
This book deals with a key area of population genetics: the ratio of the sexes in a population, or the allocation of resources to male versus female reproductive function. Samuel Karlin and Sabin Lessard establish the formal theoretical aspects of the evolution of sex ratio within the constraints of genetic mechanisms of sex determination. Their results generalize and unify existing work on the topic, strengthening previous conceptions in some cases and, in other instances, offering new directions of research. There are two main approaches to understanding the causes and effects of sex ratio. One approach focuses on the optimization and adaptive functions of sex allocation, while the other emphasizes the consequences of genetic sex determination mechanisms. In discussing the utility of these two approaches, Professors Karlin and Lessard examine the principal sex-determining mechanisms and facts involved in sex ratio representations, the various genetic and environmental factors that contribute to adaptive sex expression, and the evolution of sex determining systems and controls. From a population genetic perspective, the authors derive evolutionary properties in support of the high incidence of 1:1 sex ratio in natural populations and investigate the conditions that can explain the occurrence of biased sex ratio.
Author: Andrew F.G. Bourke
Publisher: Princeton University Press
ISBN: 0691044260
Category : Nature
Languages : en
Pages : 543
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Book Description
Biologists have long been intrigued and confounded by the complex issues in the evolution and ecology of the social behaviour of insects. The self-sacrifice of sterile workers in ant colonies has been particularly difficult for evolutionary biologists to explain. This text presents an overview of the current state of scientific knowledge about social evolution in ants and shows how studies on ants have contributed to an understanding of many fundamental topics in behavioural ecology and evolutionary biology.
Author: M. E. N. Majerus
Publisher: Princeton University Press
ISBN: 9780691009810
Category : Science
Languages : en
Pages : 288
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Author: Maryanne Fisher
Publisher: Oxford University Press
ISBN: 0199376379
Category : Business & Economics
Languages : en
Pages : 857
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Book Description
The Oxford Handbook of Women and Competition is one of the first scholarly volumes to focus specifically on competition and the competitive forces between women. Chapters provide readers with a definitive view of the current state of research, and collectively address the adaptive and socio-cultural foundations of women's competitive behavior, motivations, and cognitions.
