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Books > Science & Mathematics > Biology, life sciences > Life sciences: general issues > Evolution
Temperature profoundly impacts both the phenotypes and
distributions of organisms. These thermal effects exert strong
selective pressures on behaviour, physiology and life history when
environmental temperatures vary over space and time. Despite
temperature's significance, progress toward a quantitative theory
of thermal adaptation has lagged behind empirical descriptions of
patterns and processes. In this book, the author draws on theory
from the more general discipline of evolutionary ecology to
establish a framework for interpreting empirical studies of thermal
biology. This novel synthesis of theoretical and empirical work
generates new insights about the process of thermal adaptation and
points the way towards a more general theory. The threat of rapid
climatic change on a global scale provides a stark reminder of the
challenges that remain for thermal biologists and adds a sense of
urgency to this book's mission.
Thermal Adaptation will benefit anyone who seeks to understand the
relationship between environmental variation and phenotypic
evolution. The book focuses on quantitative evolutionary models at
the individual, population and community levels, and successfully
integrates this theory with modern empirical approaches. By
providing a synthetic overview of evolutionary thermal biology,
this accessible text will appeal to both graduate students and
established researchers in the fields of comparative, ecological,
and evolutionary physiology. It will also interest the broader
audience of professional ecologists and evolutionary biologists who
require a comprehensive review of this topic, as well as those
researchers working on the applied problems of regional and global
climate change.
From the cells of aquatic algae to the majestic redwoods towering
100 metres above the California coast, the history of plant
evolution has been one of increasing complexity. The underlying
rationale for this book is to answer the question: How, when land
plant embryos at a few-celled stage are essentially comparable, do
plants achieve such radically different adult phenotypes, from
mosses to tree-ferns, and grasses to oak trees?
The Molecular Organography of Plants chronicles the origin, and
importance, of the complex plant organs that have allowed plants to
shape the earth's biosphere, and seeks to explain why and how the
genetic mechanisms governing these developmental trajectories have
diverged so much. It provides a detailed account of the organs
produced by land plants (stems, roots, leaves, seeds, flowers) into
which is incorporated what is rapidly becoming known of the
molecular mechanisms responsible. Plant organs are therefore
discussed in the context of the evolution of development
("evo-devo"), and their basis in molecular developmental genetics
is described. The result is a novel synthesis of classical
morphology and molecular developmental biology that takes a broad
look at the evolution of plant form.
Animal phylogeny is undergoing a major revolution due to the
availability of an exponentially increasing amount of molecular
data and the application of novel methods of phylogentic
reconstruction, as well as the many spectacular advances in
palaeontology and molecular developmental biology. Traditional
views of the relationships among major phyla have been shaken and
new, often unexpected, relationships are now being considered. At
the same tiem, the emerging discipline of evolutionary
developmental biology, or 'evo-devo', has offered new insights into
the origin and evolvability of major traits of animal architecture
and life cycle. All these developments call for a revised
interpretation of the pathways along which animal structure and
development has evolved since the origin of the Metazoa.
Perspectives in Animal Phylogeny and Evolution takes on this
challenge, successfully integrating morphological, fossil and
molecular evidence to produce a novel reinterpretation of animal
evolution. Central to the book's approach is an 'evo-devo'
perspective on animal evolution (with all the fresh insights this
has given into the origin of animal organization and life cycles),
complementary to the more traditional perspectives of pattern
(cladistics, comparative anatomy and embryology), mechanisms
(developmental biology) and adaptation (evolutionary biology). The
author advocates the need to approach the study of animal evolution
with a critical attitude towards many key concepts of comparative
morphology and developmental biology. Particular attention in the
book is paid to the evolution of life cycles and larval forms.
This accessible text is suitable for graduate students
takingadvanced courses in evolutionary developmental biology,
invertebrate zoology, molecular phylogenetics and palaeontology, as
well as professional researchers in these fields requiring an
authoritative and up-to-date overview of this dynamic topic.
Market: Those in economics, especially thermodynamics, statistical
mechanics, cybernetics, information theory, resource use, and
evolutionary economic behavior. This book presents an innovative
and challenging look at evolution on several scales, from the earth
and its geology and chemistry to living organisms to social and
economic systems. Applying the principles of thermodynamics and the
concepts of information gathering and self- organization, the
author characterizes the direction of evolution in each case as an
accumulation of "distinguishability" information--a type of
universal knowledge.
Communication is essential for all forms of social interaction,
from parental care to mate choice and cooperation. This is evident
for human societies but less obvious for bacterial biofilms, ant
colonies or flocks of birds. The major disciplines of communication
research have tried to identify common core principles, but
syntheses have been few because historical barriers have limited
interaction between different research fields.
Sociobiology of Communication is a timely and novel synthesis. It
bridges many of the gaps between proximate and ultimate levels of
analysis, between empirical model systems, and between biology and
the humanities. The book offers the complementary approaches of a
distinguished group of authors spanning a large diversity of
research programs, addressing, for example, the genetic basis of
bacterial communication, dishonest communication in insect
societies, sexual selection and network communication among
colonial vertebrates. Other chapters explore the role of
communication in genomic conflict and self-organisation, and how
linguistics, psychology and philosophy may ultimately contribute to
a biological understanding of human mate choice and the evolution
of human societies.
This highly interdisciplinary book highlights key examples of
modern research to explore the genetic, neurobiological,
physiological, chemical and behavioural basis of social
communication. It identifies where consensus on the general
principles is emerging and where the major future challenges are to
be found. The book is therefore suitable for both for graduate
students and professionals in evolutionary biology and behavioural
ecology seeking novel inspiration, and for a wideracademic
audience, including social and medical scientists who would like to
explore what evolutionary approaches can offer to their fields.
This book, published in two volumes, provides the most
comprehensive review of lamprey biology since Hardisty and Potter's
"The Biology of Lampreys" published more than 30 years ago. This
second volume offers a synthesis of topics related to the lamprey
gonad (e.g., lamprey sex ratios, sex determination and sex
differentiation, sexual maturation, and sex steroids), the
artifical propagation of lampreys, post-metamorphic feeding and the
evolution of alternative feeding and migratory types, the history
and status of sea lamprey control in the Laurentian Great Lakes and
Lake Champlain, and an overview of contributions of lamprey
developmental studies for understanding vertebrate evolution.
This book takes a fresh look at the work, thoughts, and life of
1956 Nobel Prize winner William B. Shockley. It reconstructs
Shockley's upbringing, his patriotic achievements during World War
II, his contribution to semiconductor physics - culminating with
the epoch-making invention of the transistor - and his views on the
social issues of his time. The author's unparalleled access to
Shockley's personal documents provides insight into a colorful, yet
controversial, man, and also sheds light on the attitudes of other
prominent scientists of that era. Shockley was not only an
outstanding scientist in his own right but also a fiercely
independent thinker in perpetual search of the truth. His
contributions to the field known today as microelectronics are
enormous and unmatched. This book explores the critical facets of
Shockley's life, replete with never-before-published photos and
excerpts from his private correspondence and personal notebooks.
The book also delves into Shockley's views on genetics and human
intelligence. It tells the story of a man beset by an unrelenting
rationality, slandered by the popular media, and ultimately
alienated by his peers. It discusses his controversial, although
sometimes prescient, ideas regarding human genetics, putting these
into the context of modern research findings. Today, William
Shockley is perhaps just as enigmatic as his work and
accomplishments. The author presents a convincing argument that
Shockley still has much to say about the issues of our age, and
many of his ideas deserve evaluation in the public forum.
This book adopts an experimental approach to understanding the
mechanisms of evolution and the nature of evolutionary processes,
with examples drawn from microbial, plant and animal systems. It
incorporates insights from remarkable recent advances in
theoretical modeling, and the fields of molecular genetics and
environmental genomics.
Adaptation is caused by selection continually winnowing the
genetic variation created by mutation. In the last decade, our
knowledge of how selection operates on populations in the field and
in the laboratory has increased enormously, and the principal aim
of this book is to provide an up-to-date account of selection as
the principal agent of evolution. In the classical Fisherian model,
weak selection acting on many genes of small effect over long
periods of time is responsible for driving slow and gradual change.
However, it is now clear that adaptation in laboratory populations
often involves strong selection acting on a few genes of large
effect, while in the wild selection is often strong and highly
variable in space and time. Indeed these results are changing our
perception of how evolutionary change takes place. This book
summarizes our current understanding of the causes and consequences
of selection, with an emphasis on quantitative and experimental
studies. It includes the latest research into experimental
evolution, natural selection in the wild, artificial selection,
selfish genetic elements, selection in social contexts, sexual
selection, and speciation.
Selection: The Mechanism of Evolution is an advanced textbook
suitable for senior undergraduate and graduate students taking
courses in evolutionary biology, ecology, populationgenetics, and
experimental evolution. It will also be a valuable reference tool
for those professional researchers in these fields requiring an
authoritative and up-to-date overview of the topic, as well as
providing an accessible treatment of evolutionary mechanisms for
molecular and cellular biologists.
How universal are our moral obligations? Should we attempt to
communicate with life beyond our planet? What is "life"? Social and
Conceptual Issues in Astrobiology explores the most important
questions related to the field of astrobiology, and the resulting
book is the most comprehensive, interdisciplinary approach focused
on the humanistic issues of the multidisciplinary science of
astrobiology to date. Questions surrounding life on other planets
have troubled humankind for centuries; this volume outlines the
questions for the next decade of research in the field of
astrobiology. Kelly C. Smith and Carlos Mariscal have assembled the
top scholars from fields spanning history, communication,
philosophy, law, and theology to consider the implications of life
elsewhere. The perspectives supplied by this expansive group of
contributors have never before been collected in book a book
focused on astrobiology. This book sets a benchmark for future work
in astrobiology, giving readers the groundwork from which to base
the continuous scholarship coming from this ever-growing scientific
field.
Understanding of animal social and sexual evolution has seen a
renaissance in recent years with discoveries of frequent infidelity
in apparently monogamous species, the importance of sperm
competition, active female mate choice, and eusocial behavior in
animals outside the traditional social insect groups. Each of these
findings has raised new questions, and suggested new answers, about
the evolution of behavioral interactions among animals. This volume
synthesizes recent research on the sexual and social biology of the
Crustacea, one of the dominant invertebrate groups on earth. Its
staggering diversity includes ecologically important inhabitants of
nearly every environment from deep-sea trenches, through headwater
streams, to desert soils. The wide range of crustacean phenotypes
and environments is accompanied by a comparable diversity of
behavioral and social systems, including the elaborate courtship
and wildly exaggerated morphologies of fiddler crabs, the
mysterious queuing behavior of migrating spiny lobsters, and even
eusociality in coral-reef shrimps. This diversity makes crustaceans
particularly valuable for exploring the comparative evolution of
sexual and social systems. Despite exciting recent advances,
however, general recognition of the value of Crustacea as models
has lagged behind that of the better studied insects and
vertebrates. This book synthesizes the state of the field in
crustacean behavior and sociobiology and places it in a
conceptually based, comparative framework that will be valuable to
active researchers and students in animal behavior, ecology, and
evolutionary biology. It brings together a group of internationally
recognized and rising experts in fields related to crustacean
behavioral ecology, ranging from physiology and functional
morphology, through mating and social behavior, to ecology and
phylogeny. Each chapter makes connections to other, non-crustacean
taxa, and the volume closes with a summary section that synthesizes
the contributions, discusses anthropogenic impacts, highlights
unanswered questions, and provides a vision for profitable future
research.
For undergraduate courses in Evolution By presenting evolutionary
biology as a dynamic, ongoing research effort and organizing
discussions around questions, this best-selling text helps students
think like scientists as they learn about evolution. The authors
convey the excitement and logic of evolutionary science by
introducing principles through recent and classical studies, and by
emphasizing real-world applications. In the Fifth Edition,
co-author Jon Herron takes the lead in streamlining and updating
content to reflect key changes in the field. The design and art
program have also been updated for enhanced clarity.
Systematics has developed rapidly during the past two decades. A
multitude of new methods and contributions from a diversity of
biological fields including molecular genetics and developmental
biology have provided a wealth of phylogenetic hypotheses, some
confirming traditional views others contradicting them. Despite
such inconsistencies, it is now possible to recognize robust
regions of a 'tree of life' and also to identify problematic areas
which have yet to be resolved. This is the first book to apply the
current state of phylogeny to an evolutionary interpretation of
animal organ systems and body architecture, providing alternative
theories in those cases of continuing controversy.
Organs do not appear suddenly during evolution; instead they are
composed of far simpler structures. In some cases it is even
possible to trace particular molecules or physiological pathways as
far back as pre-animal history. What emerges is a fascinating
picture, showing how animals have combined ancestral and new
elements in novel ways to form constantly changing responses to
environmental requirements.
The Evolution of Organ Systems starts with a general overview of
current animal phylogeny, followed by review of general body
organization including symmetry, anteroposterior axis, dorsoventral
axis, germ layers, segmentation, and skeletons. Subsequent chapters
then provide a detailed description of the individual organ systems
themselves - integument, musculature, nervous system, sensory
organs, body cavities, excretory system, circulatory system,
respiratory system, intestinal system, gonads and gametes.
Generously illustrated throughout, this accessible text is suitable
for both upper levelundergraduate and graduate students taking
courses in animal evolution, organogenesis, animal anatomy, zoology
and systematics. It will also be a valuable reference tool for
those professional researchers in these fields requiring an
authoritative, balanced and up-to-date overview of the topic.
Kinship ties-the close relationships found within the family-have
been a central focus of evolutionary biological analyses of social
behavior ever since biologist William Hamilton extended the concept
of Darwinian fitness to include an individual's actions benefiting
not only his own offspring, but also collateral kin. Evolutionary
biologists consider organisms not only reproductive strategists,
but also nepotistic strategists. If a person's genes are just as
likely to be reproduced in her sister as in her daughter, then we
should expect the evolution of sororal investment in the same way
as one expects maternal investment. This concept has revolutionized
biologists' understanding of social interaction and developmental
psychologists' understanding of the family. However, kinship ties
have largely been ignored in other areas of psychology,
particularly social psychology.
Family Relationships brings together leading theorists and
researchers from evolutionary psychology and related disciplines to
illustrate the ways in which an evolutionary perspective can inform
our study and understanding of family relationships. The
contributors argue that family psychology is relationship specific:
the relationship between mother and daughter is different from that
between father and daughter or that between brother and sister or
sister and sister. In other words, humans have evolved specialized
mechanisms for processing information and motivating behavior that
deal with the distinct demands of being a mate, father, mother,
sibling, child, or grandparent. Such an evolutionary perspective on
family dynamics provides a unique insight into human
behavior.
This volume will be an indispensableresource for psychologists,
sociologists, and anthropologists, as well scholars of family,
marriage, and animal behavior.
The study of the genetic basis for evolution has flourished in this century, as well as our understanding of the evolvability and programmability of biological systems. Genetic algorithms meanwhile grew out of the realization that a computer program could use the biologically-inspired processes of mutation, recombination, and selection to solve hard optimization problems. Genetic and evolutionary programming provide further approaches to a wide variety of computational problems. A synthesis of these experiences reveals fundamental insights into both the computational nature of biological evolution and processes of importance to computer science. Topics include biological models of nucleic acid information processing and genome evolution; molecules, cells, and metabolic circuits that compute logical relationships; the origin and evolution of the genetic code; and the interface with genetic algorithms and genetic and evolutionary programming.
This book addresses multiple aspects of biological clocks in
prokaryotes. The first part of the book deals with the circadian
clock system in cyanobacteria, i.e. the pioneer of bacterial
clocks. Starting with the history and background of cyanobacteria
and circadian rhythms in microorganisms, the topics range from the
molecular basis, structure and evolution of the circadian clock to
modelling approaches, Kai systems in cyanobacteria and
biotechnological applications. In the second part, emergent
timekeeping properties of bacteria in microbiomes and bacteria
other than cyanobacteria are discussed. Since the discovery of
circadian rhythms in cyanobacteria in the late 1980s, the field has
exploded with new information. The cyanobacterial model system for
studying circadian rhythms (Synechococcus elongatus), has allowed a
detailed genetic dissection of the bacterial clock due to
state-of-the-art methods in molecular, structural, and evolutionary
biology. Cutting-edge research spanning from cyanobacteria and
circadian phenomena in other kinds of bacteria, to microbiomes has
now given the field another major boost. This book is aimed at
junior and senior researchers alike. Students or researchers new to
the field of biological clocks in prokaryotes will get a
comprehensive overview, while more experienced researchers will get
an update on the latest developments.
The broad arc of islands north of Australia that extends from
Indonesia east towards the central Pacific is home to a set of
human populations whose concentration of diversity is unequaled
elsewhere. Approximately 20% of the worlds languages are spoken
here, and the biological and genetic heterogeneity among the groups
is extraordinary. Anthropologist W.W. Howells once declared
diversity in the region so Protean as to defy analysis. However,
this book can now claim considerable success in describing and
understanding the origins of the genetic and linguistic variation
there. In order to cut through this biological knot, the authors
have applied a comprehensive battery of genetic analyses to an
intensively sampled set of populations, and have subjected these
and complementary linguistic data to a variety of phylogenetic
analyses. This has revealed a number of heretofore unknown ancient
Pleistocene genetic variants that are only found in these island
populations, and has also identified the genetic footprints of more
recent migrants from Southeast Asia who were the ancestors of the
Polynesians. The book lays out the very complex structure of the
variation within and among the islands in this relatively small
region, and a number of explanatory models are tested to see which
best account for the observed pattern of genetic variation here.
The results suggest that a number of commonly used models of
evolutionary divergence are overly simple in their assumptions, and
that often human diversity has accumulated in very complex ways.
Ancestral sequence reconstruction is a technique of growing
importance in molecular evolutionary biology and comparative
genomics. As a powerful tool for testing evolutionary and
ecological hypotheses, as well as uncovering the link between
sequence and molecular phenotype, there are potential applications
in a range of fields. Ancestral Sequence Reconstruction starts with
a historical overview of the field, before discussing the potential
applications in drug discovery and the pharmaceutical industry.
This is followed by a section on computational methodology, which
provides a detailed discussion of the available methods for
reconstructing ancestral sequences (including their advantages,
disadvantages, and potential pitfalls). Purely computational
applications of the technique are then covered, including whole
proteome reconstruction. Further chapters provide a detailed
discussion on taking computationally reconstructed sequences and
synthesizing them in the laboratory. The book concludes with a
description of the scientific questions where experimental
ancestral sequence reconstruction has been utilized to provide
insights and inform future research. This research level text
provides a first synthesis of the theories, methodologies and
applications associated with ancestral sequence recognition, while
simultaneously addressing many of the hot topics in the field. It
will be of interest and use to both graduate students and
researchers in the fields of molecular biology, molecular
evolution, and evolutionary bioinformatics.
Leading researchers in the area of the origin and evolution of life
in the universe contributed to Chemical Evolution: Physics of the
Origin and Evolution of Life. This volume provides a review of this
interdisciplinary field. In 35 chapters many aspects of the origin
of life are discussed by 90 authors, with particular emphasis on
the early paleontological record: physical, chemical, biological,
and informational aspects of life's origin, instrumentation in
exobiology and system exploration; the search for habitable planets
and extraterrestrial intelligent radio signals. This book contains
the proceedings of the Fourth Trieste Conference on Chemical
Evolution that took place in September 1995, in which scientists
from a wide geographical distribution joined in a Memorial to Cyril
Ponnamperuma, who was a pioneer in the field of chemical evolution,
the origin of life, and exobiology, and also initiated the Trieste
Conferences on Chemical Evolution and the Origin of Life. This
fourth Conference was therefore dedicated to his memory. Audience:
Graduate students and researchers in the many areas of basic,
earth, and life sciences that contribute to the study of chemical
evolution and the origin of life.
The human foot is a unique and defining characteristic of our
anatomy. Most primates have grasping, prehensile feet, whereas the
human foot stands out as a powerful non-grasping propulsive lever
that is central to our evolution as adept bipedal walkers and
runners and defines our lineage. Very few books have compiled and
evaluated key research on the primate foot and provided a
perspective on what we know and what we still need to know. This
book serves as an essential companion to "The Evolution of the
Primate Hand" volume, also in the Developments in Primatology
series. This book includes chapters written by experts in the field
of morphology and mechanics of the primate foot, the role of the
foot in different aspects of primate locomotion (including but not
limited to human bipedalism), the "hard evidence" of primate foot
evolution including fossil foot bones and fossil footprints, and
the relevance of our foot's evolutionary history to modern human
foot pathology. This volume addresses three fundamental questions:
(1) What makes the human foot so different from that of other
primates? (2) How does the anatomy, biomechanics, and ecological
context of the foot and foot use differ among primates and why? (3)
how did foot anatomy and function change throughout primate and
human evolution, and why is this evolutionary history relevant in
clinical contexts today? This co-edited volume, which relies on the
insights of leading scholars in primate foot anatomy and evolution
provides for the first time a comprehensive review and scholarly
discussion of the primate foot from multiple perspectives. It is
accessible to readers at different levels of inquiry (e.g.,
undergraduate/graduate students, postdoctoral research, other
scholars outside of biological anthropology). This volume provides
an all-in-one resource for research on the comparative and
functional morphology and evolution of the primate foot.
The present book aims to examine how sexual selection works in the
human species. Almost all scholarly effort focuses on sexual
selection in non-human species and extrapolates the findings to the
human one. However, human mating has a unique pattern not found in
any other species, namely parental influence over mate choice.
Across preindustrial societies, the typical pattern of long-term
mating is arranged marriage, where parents choose spouses for their
children. By doing so, parents effectively become a sexual
selection force. Traits that enhance an individual's chance to be
selected as a son- or a daughter-in-law confer important
reproductive advantages to those who are endowed with them,
increasing in frequency in the population. The author has coined
the term parental choice to describe the sexual selection force
that arises from parental control over mating. He synthesizes
extensive theoretical and empirical work in order to understand and
model this force. The aim is to understand which factors give rise
to parental choice and to combine these insights into constructing
a more formal model. It also aims to further examine whether the
predictions of the model fit the patterns of mating found across
different types of human societies, and how the model can be used
to understand the evolution of behavioral traits involved in
mating. By synthesizing the various arguments put forward and
published across the literature, the book offers a comprehensive
argument and overview of an aspect of sexual selection unique to
our species. Furthermore, the book revises and extends previously
made arguments and models, while it provides useful insights on how
the proposed revision of sexual selection theory can enable us to
understand a wide range of human behavioral phenomena. It should be
key reading for those interested in studying sexual selection in
general and in the Homo sapiens species in particular.
Does natural selection act primarily on individual organisms, on
groups, on genes, or on whole species? Samir Okasha provides a
comprehensive analysis of the debate in evolutionary biology over
the levels of selection, focusing on conceptual, philosophical and
foundational questions. A systematic framework is developed for
thinking about natural selection acting at multiple levels of the
biological hierarchy; the framework is then used to help resolve
outstanding issues. Considerable attention is paid to the concept
of causality as it relates to the levels of selection, in
particular the idea that natural selection at one hierarchical
level can have effects that 'filter' up or down to other levels.
Unlike previous work in this area by philosophers of science, full
account is taken of the recent biological literature on 'major
evolutionary transitions' and the recent resurgence of interest in
multi-level selection theory among biologists. Other biological
topics discussed include Price's equation, kin and group selection,
the gene's eye view, evolutionary game theory, outlaws and selfish
genetic elements, species and clade selection, and the evolution of
individuality. Philosophical topics discussed include reductionism
and holism, causation and correlation, the nature of hierarchical
organization, and realism and pluralism.
Is He Out There? is an interdisciplinary examination of the
Christian reaction to Dawkinss The God Delusion. That reaction has
offered a wide range of counter-arguments, among them: that
Dawkinss demonstration of how God almost certainly doesnt exist
addresses an out-dated conception of God; that science and religion
are not conflictual as Dawkins contends and indeed may well be
converging upon an understanding of how God acts in the universe;
that Dawkinss denigration of the Bible depends on an overly literal
reading; and that Dawkins assumes a narrative of progress in which
human beings take the place of God in controlling the course of
history. Is He Out There? responds to these arguments in the
context of current scientific understanding, biblical criticism and
philosophy. Paul Laffan demonstrates how the desire to meet the
challenge posed by Dawkinss viewpoint has led to the perversion of
scientific theories and accepted positions in other important
fields of inquiry. It suggests that Christianity is wedded to a God
who is the cause of the universe a classical conception of cause
that is anachronistic; that denying the Bible was read for most of
the Christian era as offering a literal account of divine creation
is a significant misrepresentation of doctrinal history; and that a
complete dismissal of progress requires the dismissal of scientific
achievement. The author considers the extent to which attractive,
secular values like tolerance and freedom of opinion are Christian
in source and whether moral systems require God to underwrite them.
The wide-ranging nature of Is He Out There? not only provides a
review of the state of contemporary Christian apology but is a
measured address of the arguments put forward in The God Delusion
and indeed of the substantive commentary on Dawkinss thesis.
We are interested in the evolution of hominin diets for several
reasons. One is the fundamental concern over our present-day eating
habits and the consequences of our societal choices, such as
obesity prevalent in some cultures and starvation in others.
Another is that humans have learned to feed themselves in extremely
varied environments, and these adaptations, which are fundamentally
different from those of our closest biological relatives, have to
have had historical roots of varying depth. The third, and the
reason why most paleoanthropologists are interested in this
question, is that a species' trophic level and feeding adaptations
can have a strong effect on body size, locomotion, "life history
strategies," geographic range, habitat choice, and social
behavior.
Diet is key to understanding the ecology and evolution of our
distant ancestors and their kin, the early hominins. A study of the
range of foods eaten by our progenitors underscores just how
unhealthy many of our diets are today. This volume brings together
authorities from disparate fields to offer new insights into the
diets of our ancestors. Paleontologists, archaeologists,
primatologists, nutritionists and other researchers all contribute
pieces to the puzzle.
This volume has at its core four main sections:
DT Reconstructed diets based on hominin fossils--tooth size,
shape, structure, wear, and chemistry, mandibular
biomechanics
DT Archaeological evidence of subsistence--stone tools and
modified bones
DT Models of early hominin diets based on the diets of living
primates--both human and non-human, paleoecology, and
energetics
DT Nutritional analyses and their implications for
evolutionarymedicine
New techniques for gleaning information from fossil teeth, bones,
and stone tools, new theories stemming from studies of
paleoecology, and new models coming from analogy with modern humans
and other primates all contribute to our understanding. When these
approaches are brought together, they offer an impressive glimpse
into the lives of our distant ancestors. The contributions in this
volume explore the frontiers of our knowledge in each of these
disciplines as they address the knowns, the unknowns, and the
unknowables of the evolution of hominin diets.
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