Protecting Zooplankton from UV Threats: Daphnia's Behavioral and Pigment Strategies

Dec 09, 2025

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This study examines how UV radiation levels affect the accumulation of protective pigments in Daphnia, a model zooplankton species. Conducted in Siberia and Sweden, the research reveals that Daphnia employ both behavioral and phenotypic strategies to defend against UV exposure. The findings underscore the dual reliance on avoidance behaviors and the production of protective pigments as vital survival mechanisms in zooplankton under UV stress. Understanding these responses is crucial for predicting how aquatic organisms adapt to changing environmental conditions.

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Protecting Zooplankton from UV Threats: Daphnia's Behavioral and Pigment Strategies

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ESCAPE FROM UV THREATS IN ZOOPLANKTON: A COCKTAIL OF BEHAVIOR AND PROTECTIVE PIGMENTATIONLARS-ANDERS HANSSON, SAMUEL HYLANDER, AND RUBEN SOMMARUGA. 2007.Ecology, 88(8), 2007, pp. 1932–1939 Speaker: Yu-ju Chen
Purpose • UV-radiation level influences the accumulation of protective pigments. • Model animal: Daphnia • Locations: Siberia & Sweden Daphnia
Result: Behavioral and phenotypic Siberia Sweden U V U V U V U V
Conclusion • UV defense among zooplankton is based on both phenotypic and behavioral responses. • Daphnia seem to rely on a combination of avoidance and pigments.