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April 15, 2026Ecology and EvolutionOpen Access

A Novel Light‐Induced Collective Circular Movement in Armadillo sordidus Isopods

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Authors

ISIdan SheizafEIEviatar ItzkovichACAriel D. Chipman

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Overview

Novel behavioral phenomenon reveals collective circular movement in isopods, suggesting a response to light pollution.

Key Points

  • To document and understand collective circular movement in the isopod species Armadillo sordidus.
  • Observation of natural behavior in multiple locations in northern Israel.
  • Induction of circular movement using artificial white light in controlled experiments.
  • Image analysis and manual tracking to assess aggregation size and behavior.
  • Large nocturnal aggregations of approximately 5500 individuals were observed.
  • A clear circular movement pattern was confirmed by manual tracking.
  • The behavior is characterized by a 1:4 male to female sex ratio, indicating non-reproductive motives.

Cite This Study

Sheizaf et al. (2026) studied this question.

synapsesocial.com/papers/69df2c1de4eeef8a2a6b1261https://doi.org/10.1002/ece3.73487
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