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Digest: Will invaders adapt to climate change?

Matthew P Schumm1

  • 1Department of Biological Sciences, Florida State University, Tallahassee, Florida, 32304.

Evolution; International Journal of Organic Evolution
|November 20, 2019
PubMed
Summary
This summary is machine-generated.

The invasive harlequin ladybeetle may not evolve to adapt to climate change. Research shows limited genetic variation and trade-offs in thermal tolerance traits, hindering evolutionary potential.

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Area of Science:

  • Evolutionary biology
  • Ecology
  • Genetics

Background:

  • Invasive species often exhibit rapid evolution to new environments.
  • The harlequin ladybeetle (Harmonia axyridis) is a widespread invasive species.
  • Understanding the genetic basis of thermal tolerance is key to predicting invasive success.

Discussion:

  • This study investigated the genetic architecture of thermal tolerance in Harmonia axyridis.
  • A breeding experiment was conducted to assess heritable variation and genetic correlations.
  • Results indicate constraints on the species' adaptive potential.

Key Insights:

  • Limited heritable variation exists for critical thermal tolerance traits.
  • Genetic correlations create trade-offs, further restricting adaptive evolution.
  • The invasive harlequin ladybeetle may have a constrained capacity for climate change adaptation.

Outlook:

  • Further research could explore other adaptive traits and environmental factors.
  • Understanding evolutionary constraints is crucial for invasive species management.
  • This study highlights the importance of genetic architecture in predicting species' responses to global change.