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March 29, 2026Environmental Chemistry and EcotoxicologyOpen Access

Acute mortality in sand martins (Riparia riparia) and barn swallows (Hirundo rustica) linked to dermal or inhalation pyrethroid insecticide exposure

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Authors

ASAafke.I. SaarloosMSMaarten J.J. SchramaSBS. Henrik Barmentlo

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Overview

Two incidents demonstrate acute mortality from pesticide exposure in swallow colonies, highlighting important exposure routes.

Key Points

  • The study aims to investigate acute mortality in swallows linked to pesticide exposure and assess the underlying causes.
  • Studied two mortality incidents in swallow colonies in the Netherlands.
  • Conducted necropsies and collected samples for virological and pesticide assessments.
  • Conducted screenings for 648 pesticides in feather, liver, and brain samples.
  • Permethrin and tetramethrin were found in all feather samples at high levels.
  • These insecticides were absent or at low levels in liver samples, but present in brain samples.
  • Observed neurological symptoms indicate acute neurotoxicity likely caused by dermal or inhalation exposure.

Cite This Study

Saarloos et al. (2026) studied this question.

synapsesocial.com/papers/69c8c15ade0f0f753b39bcf5https://doi.org/10.1016/j.enceco.2026.03.019
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