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Testing for coevolutionary diversification: linking pattern with process.

David M Althoff1, Kari A Segraves1, Marc T J Johnson2

  • 1Department of Biology, Syracuse University, Syracuse, NY 13244, USA.

Trends in Ecology & Evolution
|December 10, 2013
PubMed
Summary
This summary is machine-generated.

Coevolution drives species diversity, but direct evidence is limited. This review proposes mechanisms and methods to rigorously test how coevolution promotes speciation and diversification across evolutionary scales.

Keywords:
coevolutiondivergent selectionmacroevolutionmicroevolutionreproductive isolationspeciationspecies interactions

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Area of Science:

  • Evolutionary biology
  • Ecology
  • Speciation research

Background:

  • Coevolutionary diversification is recognized as a key driver of biodiversity, especially in plant-insect interactions.
  • Current research often focuses on macroevolutionary patterns, with limited understanding of the microevolutionary processes driving diversification.
  • There is a need for stronger evidence linking coevolutionary processes to actual diversification events.

Purpose of the Study:

  • To review potential mechanisms of coevolutionary diversification.
  • To outline approaches for studying coevolutionary diversification across different temporal scales.
  • To propose criteria for robustly demonstrating coevolutionary diversification.

Main Methods:

  • Literature review and synthesis of existing research on coevolution and diversification.
  • Identification of theoretical mechanisms linking coevolution to speciation.
  • Proposal of methodological frameworks for empirical testing.

Main Results:

  • Coevolutionary diversification is a plausible driver of biodiversity, but empirical support is currently weak.
  • Several potential mechanisms, such as reciprocal adaptations and reproductive isolation, can link coevolution to speciation.
  • Integrating micro- and macroevolutionary perspectives is crucial for understanding coevolutionary diversification.

Conclusions:

  • More rigorous research is needed to establish causal links between coevolution and diversification.
  • Standardized approaches and clear criteria are required to advance the field.
  • Future studies should focus on testing specific coevolutionary mechanisms across diverse taxa and timescales.