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Related Experiment Videos

Spatial scales of desert locust gregarization

M Collett1, E Despland, S J Simpson

  • 1Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, United Kingdom.

Proceedings of the National Academy of Sciences of the United States of America
|October 28, 1998
PubMed
Summary

Resource distribution at small scales drives locust phase change. Local resource concentration induces gregarization, impacting population density responses and control strategies for migratory locusts.

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Area of Science:

  • Ecology
  • Behavioral Ecology
  • Evolutionary Biology

Background:

  • Migratory locusts exhibit phenotypic plasticity, shifting between solitary and gregarious phases.
  • Crowding is a known trigger for this phase change, influencing swarm formation.

Purpose of the Study:

  • To investigate the impact of resource distribution at small spatial scales on locust phase change.
  • To understand how local resource concentration influences gregarization and population-level responses.

Main Methods:

  • Computer simulations modeling locust population dynamics.
  • Laboratory experiments examining locust behavior in response to resource availability.

Main Results:

  • Local spatial concentration of resources significantly affects phase change, inducing gregarization.

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  • Populations with concentrated resources exhibit rapid and synchronous phase changes in response to density shifts.
  • Small-scale resource structure is a critical factor in locust phase transitions.

    • Conclusions:

    • Resource distribution at small spatial scales is a key driver of locust phase change.
    • Understanding local resource patterns is crucial for effective monitoring and control of migratory locust populations.