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September 10, 2025PLoS ONEOpen Access

Behavioural rhythms of two amphipod species Marinogammarus marinus and Gammarus pulex under increasing levels of light at night

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Authors

CUCharlotte N. UnderwoodUniversity of SouthamptonAFAlex T. FordInstitute of Public AffairsSRSamuel C. RobsonUniversity of Portsmouth

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Overview

Observational analysis shows light pollution disrupts nocturnality in amphipods, indicating ecological concerns.

Key Points

  • ALAN exposure resulted in significant rhythmicity disruption in Marinogammarus marinus, decreasing overall activity.
  • Gammarus pulex did not show strong synchronization to light at night treatments, indicating different behavioural responses.
  • Rhythmic behaviours in amphipods are crucial for fitness, especially in urbanised habitats with escalating light pollution.
  • Higher levels of light at night adversely impact ecological dynamics and interspecies relations in affected communities.

Cite This Study

Underwood et al. (2025) studied this question.

synapsesocial.com/papers/68c1bd3254b1d3bfb60ee192https://doi.org/10.1371/journal.pone.0329449
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