Evolutionary Biology Of Transient Unstable Populations
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Author | : Antonio Fontdevila |
Publisher | : Springer Science & Business Media |
Total Pages | : 299 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 3642745253 |
An overview of speciation theory reveals an increasingly held view that many events leading to the origin of new species occur in transient, unstable populations. A transient, unstable population should be under stood as a fast episodic phase in a population subjected to genetic and environmental factors that tend to disrupt its cohesive, balanced genome architecure, thus enhancing its probability to produce a new species. Striking the core of Darwinian thought, some authors claim that these· processes may be non-adaptive. Among the environmental factors one may cite biotic (e.g. resource availability) and abiotic (e.g. temperature) stress conditions that break up the population stability producing random, unpredictable changes in population size, population trait distribution, breeding structure, inter- and/or intrapopulational hybridization, etc. Genetic factors consist of those events that induce rapid changes in genetic expression and/or that determine reproductive isolation, such as substitutions, insertions, deletions, duplications, transpositions, gross chromosomal rearrangements, recombination and, in general, any mechanism that changes the regulatory pattern of the organism or the balance of its meiotic system. Both kinds of factors are often intertwined in a complex net and may influence each other.
Author | : Antonio Fontdevila |
Publisher | : |
Total Pages | : 308 |
Release | : 1989-10-31 |
Genre | : |
ISBN | : 9783642745263 |
The biology of transient, unstable populations form the evolutionary stage used to describe events leading to the origin of new species, which is the theme of the present analysis. This problem is approached from different perspectives, ranging from population genetics, population ecology and developmental biology to the molecular level of evolution. Covering these main disciplines involved in the elucidation of evolutionary mechanisms, the present volume bridges the gap between molecularly orientated evolutionists and population biologists. Readers will find a high quality, well balanced set of theoretical and experimental articles authored by leading researchers in the field of evolutionary biology.
Author | : Antonio Fontdevila |
Publisher | : Springer |
Total Pages | : 293 |
Release | : 2011-12-13 |
Genre | : Science |
ISBN | : 9783642745270 |
An overview of speciation theory reveals an increasingly held view that many events leading to the origin of new species occur in transient, unstable populations. A transient, unstable population should be under stood as a fast episodic phase in a population subjected to genetic and environmental factors that tend to disrupt its cohesive, balanced genome architecure, thus enhancing its probability to produce a new species. Striking the core of Darwinian thought, some authors claim that these· processes may be non-adaptive. Among the environmental factors one may cite biotic (e.g. resource availability) and abiotic (e.g. temperature) stress conditions that break up the population stability producing random, unpredictable changes in population size, population trait distribution, breeding structure, inter- and/or intrapopulational hybridization, etc. Genetic factors consist of those events that induce rapid changes in genetic expression and/or that determine reproductive isolation, such as substitutions, insertions, deletions, duplications, transpositions, gross chromosomal rearrangements, recombination and, in general, any mechanism that changes the regulatory pattern of the organism or the balance of its meiotic system. Both kinds of factors are often intertwined in a complex net and may influence each other.
Author | : Luis A. Ebensperger |
Publisher | : John Wiley & Sons |
Total Pages | : 408 |
Release | : 2016-02-18 |
Genre | : Science |
ISBN | : 1118846516 |
Fully integrative approach to the socibiology of caviomorph rodents Brings together research on social systems with that on epigenetic, neurendocrine and developmental mechanisms of social behavior Describes the social systems of many previously understudied caviomorph species, identifying the fitness costs and benefits of social living in current day populations as well as quantified evolutionary patterns or trends Highlights potential parallels and differences with other animal models
Author | : Susan A. Foster |
Publisher | : Oxford University Press |
Total Pages | : 337 |
Release | : 1999-03-04 |
Genre | : Science |
ISBN | : 0195359488 |
Studies of animal behavior often assume that all members of a species exhibit the same behavior. Geographic Variation in Behavior shows that, on the contrary, there is substantional variation within species across a wide range of taxa. Including work from pioneers in the field, this volume provides a balanced overview of research on behavioral characteristics that vary geographically. The authors explore the mechanisms by which behavioral differences evolve and examine related methodological issues. Taken together, the work collected here demonstrates that genetically based geographic variation may be far more widespread than previously suspected. The book also shows how variation in behavior can illuminate both behavioral evolution and general evolutionary patterns. Unique among books on behavior in its emphasis on geographic variation, this volume is a valuable new resource for students and researchers in animal behavior and evolutionary biology.
Author | : Theodore Garland |
Publisher | : Univ of California Press |
Total Pages | : 750 |
Release | : 2009-12-03 |
Genre | : Science |
ISBN | : 052094447X |
Experimental approaches to evolution provide indisputable evidence of evolution by directly observing the process at work. Experimental evolution deliberately duplicates evolutionary processes—forcing life histories to evolve, producing adaptations to stressful environmental conditions, and generating lineage splitting to create incipient species. This unique volume summarizes studies in experimental evolution, outlining current techniques and applications, and presenting the field’s full range of research—from selection in the laboratory to the manipulation of populations in the wild. It provides work on such key biological problems as the evolution of Darwinian fitness, sexual reproduction, life history, athletic performance, and learning.
Author | : Godfrey M. Hewitt |
Publisher | : Springer Science & Business Media |
Total Pages | : 404 |
Release | : 2013-06-29 |
Genre | : Science |
ISBN | : 3642839622 |
Taxonomy is fundamental to understanding the variety of life forms, and exciting expansions in molecular biology are re- volutionising the obtained data. This volume reviews the ma- jor molecular biological techniques that are applied in ta- xonomy. The chapters are arranged in three main sections:1) Overviews of important topics in molecular taxonomy; 2) Case studies of the successful application of molecular methods to taxonomic and evolutionary questions; 3) Protocols for a range of generally applicable methods. The described techni- ques include DNA-DNA hybridization, DNA fingerprinting, RFLP analysis, and PCR sequencing.
Author | : J. F. McDonald |
Publisher | : Springer Science & Business Media |
Total Pages | : 355 |
Release | : 2012-12-06 |
Genre | : Medical |
ISBN | : 9401120285 |
In the summer of 1992 a distinguished group of molecular, population and evolutionary geneticists assembled on the campus of the University of Georgia in Athens, USA to discuss the relevance of their research to the role played by transposable elements (TEs) in evolution. The meeting consisted of a series of informal discussions of issues brought up in papers written by the participants and distributed among them prior to the meeting. These papers and the transcripts of the ensuing discussions are presented in this volume.
Author | : James H. Brown |
Publisher | : University of Chicago Press |
Total Pages | : 283 |
Release | : 1995-06 |
Genre | : Science |
ISBN | : 0226076156 |
In Macroecology, James H. Brown proposes a radical new research agenda designed to broaden the scope of ecology to encompass vast geographical areas and very long time spans. While much ecological research is narrowly focused and experimental, providing detailed information that cannot be used to generalize from one ecological community or time period to another, macroecology draws on data from many disciplines to create a less detailed but much broader picture with greater potential for generalization. Integrating data from ecology, systematics, evolutionary biology, paleobiology, and biogeography to investigate problems that could only be addressed on a much smaller scale by traditional approaches, macroecology provides a richer, more complete understanding of how patterns of life have moved across the earth over time. Brown also demonstrates the advantages of macroecology for conservation, showing how it allows scientists to look beyond endangered species and ecological communities to consider the long history and large geographic scale of human impacts. An important reassessment of the direction of ecology by one of the most influential thinkers in the field, this work will shape future research in ecology and other disciplines. "This approach may well mark a major new turn in the road in the history of ecology, and I find it extremely exciting. The scope of Macroecology is tremendous and the book makes use of its author's exceptionally broad experience and knowledge. An excellent and important book."—Lawrence R. Heaney, Center for Environmental and Evolutionary Biology, the Field Museum
Author | : Philip G. Cox |
Publisher | : Cambridge University Press |
Total Pages | : 627 |
Release | : 2015-08-06 |
Genre | : Science |
ISBN | : 1107044332 |
A valuable resource for the latest research on rodents, highlighting links across palaeontology, developmental biology, functional morphology, phylogenetics and biomechanics.