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The evolution of maladaptation.

B J Crespi1

  • 1Department of Biological Science, Simon Fraser University, 8888 University Drive, Burnaby BC V5A 1S6, Canada. crespi@sfu.ca

Heredity
|July 25, 2000
PubMed
Summary
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Maladaptation, or deviation from adaptive peaks, arises from genetic factors like mutation and inbreeding. Understanding its causes and scope is crucial for comprehending phenotypic variation.

Area of Science:

  • Evolutionary biology
  • Genetics
  • Ecology

Background:

  • Maladaptation is defined as a deviation from adaptive peaks.
  • It arises from various genetic factors including mutation, inbreeding, drift, gene flow, heterozygote advantage, and pleiotropy.
  • The degree of maladaptation is influenced by genetic architecture and the interplay between selective pressures, environmental change, and genetic responses.

Purpose of the Study:

  • To outline a research program for studying maladaptation.
  • To detail the empirical requirements for analyzing maladaptation.
  • To emphasize the importance of studying maladaptation for understanding phenotypic variation.

Main Methods:

  • Recognition of putative maladaptation using phylogenetics, teleonomy, development, and genetics.

Related Experiment Videos

  • Assessment of deviation from adaptation through studies of natural selection and teleonomy.
  • Determination of maladaptation causes via genetic and developmental analyses.

    • Main Results:

    • Identifying maladaptation requires stringent conditions, more so than identifying adaptation.
    • Few studies have successfully identified and characterized maladaptive traits.
    • Analysis of maladaptation is essential for a complete understanding of phenotypic variation.

    Conclusions:

    • A comprehensive understanding of phenotypic variation necessitates the study of maladaptation.
    • The empirical analysis of maladaptation involves recognizing deviations and determining their genetic causes.
    • Further research is needed to clearly identify and characterize maladaptive traits.