On the Role of Species in Anagenesis

  title={On the Role of Species in Anagenesis},
  author={Douglas J. Futuyma},
  journal={The American Naturalist},
  pages={465 - 473}
  • D. Futuyma
  • Published 1 September 1987
  • Biology
  • The American Naturalist
Speciation is central to the hypothesis of punctuated equilibria s developed by Eldredge and Gould (1972; see also Gould and Eldredge 1977, 1986; Gould 1982) and by Stanley (1975, 1979). Without the claim that evolutionary change is associated with speciation, punctuated equilibria would consist merely of the statement (to which no one would take exception) that rates of evolution vary. Population geneticists have generally been skeptical about punctuated equilibria (e.g., Templeton 1980; Lande… 

Speciational Trends and the Role of Species in Macroevolution

Professor Grant (1989) argued that in my recent note on the role of species in anagenesis (Futuyma 1987), I have independently discovered his principle of "speciational trends," and he noted the

Punctuated equilibria ( evolutionary theory )

The term “punctuated equilibria” refers to Stephen Jay Gould and Niles Eldredge's 1972 proposal regarding the nature of biological data as preserved in the fossil record and the implications that

The Theory of Speciational Trends

  • V. Grant
  • Biology
    The American Naturalist
  • 1989
The subject of speciational trends is reviewed here for several reasons, since it can explain some macroevolutionary phenomena that are difficult o account for by any other process.

Adaptive speciation: the role of natural selection in mechanisms of geographic and non-geographic speciation.

  • J. M. Baker
  • Biology
    Studies in history and philosophy of biological and biomedical sciences
  • 2005

Can Modern Evolutionary Theory Explain Macroevolution

It is concluded that although several proposed extensions and seemingly unorthodox ideas have some merit, the observations they purport to explain can mostly be interpreted within the framework of the Synthetic Theory.

Tempo and mode of speciation in the sea.


Encouraged by the impact of punctuated equilibria, paleobiologists resurrected other challenges to neo-Darwinian theory and began to acknowledge the grumbling from the paleobiological wing of the profession.


This chapter discusses sexual dialectics, sexual selection and variation in reproductive behavior in Drosophila melanogaster, and the role of costs of reproduction in the evolution of life-histories.

Theory and speciation.





The neo-Darwinian synthesis that resulted from the integration of Mendelian genetics into evolutionary theory has dominated evolutionary biology for the last 30 to 40 years, due largely to its

Punctuated equilibria: the tempo and mode of evolution reconsidered

It is argued that virtually none of the examples brought forward to refute the model of punctuated equilibria can stand as support for phyletic gradualism; many are so weak and ambiguous that they only reflect the persistent bias for gradualism still deeply embedded in paleontological thought.

Adaptation and Evolution in Heliconius: A Defense of NeoDarwinism

This review addressed the question whether changes over a period of around 8000 years in populations of the snail Cepaea could be well accounted for by the selective effects of temperature known to act on the forms in present day populations, and the independently known fluctuations of the British climate during that time.

Punctuated equilibria: an alternative to phyletic gradualism

Editorial introduction. Moving from populations to species. we recall that the process of speciation as seen through the hyperopic eyes of the paleontologist is an old and venerable theme. But the

Chronospecies' longevities, the origin of genera, and the punctuational model of evolution

Estimates of rates of extinction suggest that the bottleneck effect cannot be a major source of evolutionary change, and the long durations of hominid species imply that the evolution of humans, like that of other mammals, conforms to this model.

General Adaptation and Evolution

The examples and even the categories of variation correlated with definite, limited aspects of the physical and biotic environment could be expanded virtually without end.

STASIS IN PROGRESS: The Empirical Basis of Macroevolution

The theory and practice of macroevolutionary study have moved from the seat of the pants, to the back of an envelope, to the printed page. In the course of this journey, important ideas have surfaced

The demonstration of speciation in fossil molluscs and living fishes

In revealing the pattern and process of evolution, both fossil and living forms are helpful, but in demonstrating the fine-scale events during and after speciation in living animals one can utilize techniques and observations that cannot be applied to fossil material.

Evolution and Coevolution in Communities

Communities, broadly defined, are evident virtually from the beginning of the fossil record; the most general features of their structure may be said to arise automatically, but this cannot be said

Late Quaternary Climatic Change in Africa

This review summarizes current knowledge in one branch of natural geography, the late-Quaternary paleoclimatology of Africa, and indicates that an accurate under­ standing of the nature, amplitude, and timing of changes in the geographical param­ eters of ecological systems is vital.