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evolutionary theory: the view from altenberg by Massimo Pigliucci

Evolución:"Toward an extended evolutionary synthesis?" Evosynthesis

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Evosynthesis, Massimo Pigliucci

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Page 1: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

evolutionary theory:

the view from altenberg

by Massimo Pigliucci

Page 2: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis
Page 3: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis
Page 4: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

Evolutionary Theory 1.0: Darwinism

Common descent Natural selection

Missing a theory of heredity(after having flirted with Lamarckism

and blending inheritance)

Page 5: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

Evolutionary Theory 1.1: neo-Darwinism

Wallace Weissman

Rejection of Lamarckism Separation of soma and germ

Still missing a theory of heredity...

Page 6: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

Evolutionary Theory 2.0: the beginning of the Modern Synthesis

Fisher Haldane Wright

Compatibility between Mendelism and statistical genetics

Theories of selection and random drift: birth of population genetics

Page 7: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

Evolutionary Theory 2.1: the mature Modern Synthesis

Dobzhansky Mayr Simpson Stebbins

Variation in natural populations Species concepts, speciation processes Compatibility of gradualism with paleontology Applicability of Darwinism to variety of mating

and genetic systems in plants

Huxley

Page 8: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

“The major tenets of the evolutionary synthesis were that populations contain genetic variation that arises by random mutation and

recombination; that populations evolve by changes in gene frequency brought about by random genetic drift, gene flow, and especially natural

selection; that most adaptive genetic variants have individually slight phenotypic effects so that phenotypic changes are gradual; that

diversification comes about by speciation, which normally entails the gradual evolution of reproductive isolation among populations; and that

these processes, continued for sufficiently long, give rise to changes of such great magnitude as to warrant the designation of higher taxonomic levels.”

Doug Futuyma

Page 9: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

Do we need Evolutionary Theory 3.0? Toward an Extended Synthesis

“[the Modern Synthesis] is strictly a theory of genes, yet the phenomenon that has to be explained in evolution is that of the transmutation of form.”

(Karl Popper)

Page 10: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

How do we factor in development? Is evolution always gradual? Is selection the only organizing principle? What are the targets of selection? Is there a discontinuity between micro- and

macro-evolution? Is the question of inheritance settled? Where do evolutionary novelties come from? Oh, and what about ecology?

Page 11: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

The view from Altenberg:taking evo-bio seriously as a historical science,

the role of contingency

John Beatty

Page 12: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

The view from Altenberg:multi-level selection theory

is here to stay

!z = cov (W, Z) + E cov (w, z)

(Price 1972)

collectivelevel

particlelevel

David S. Wilson

Page 13: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

The view from Altenberg:epigenetic and other inheritances

Genetic Epigenetic (methylation, iRNA,

histone conformation) Behavioral (mimicking) Cultural (traditions, “memes”)

Eva Jablonka

Eors Szathmary

Page 14: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

The view from Altenberg: innovation, facilitated variation and the role of physico-chemistry

Gerd Muller Stuart NewmanMarc Kirschner

Page 15: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

Is this a paradigm shift?

Thomas Kuhn

Page 16: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

Agency: Where natural selection acts (so-called “units of selection problem”).

Efficacy: The relative power of natural selection in comparison to other evolutionary mechanisms.

Scope: The degree to which natural selection can be extrapolated to macroevolutionary processes.

Page 17: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

An (extended) synthesis of what?

commondescent

naturalselection

Mendelism

population-statisticalgenetics

paleontology

naturalhistory

paleontology

evo-devogenomics,

networks theory

epigeneticinheritance

multilevelselection theory

evolvability &modularity

plasticity &accommodation

contingency

complexitytheory

nicheconstruction

ecology

Page 18: Evolución:"Toward an extended evolutionary synthesis?"  Evosynthesis

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