Can Bees Detect Perfluorooctane Sulfonate (PFOS)?

Title
Can Bees Detect Perfluorooctane Sulfonate (PFOS)?
Publication Date
2024
Author(s)
Sonter, Carolyn A
Tighe, Matthew
( author )
OrcID: https://orcid.org/0000-0003-1027-0082
Email: mtighe2@une.edu.au
UNE Id une-id:mtighe2
Rader, Romina
( author )
OrcID: https://orcid.org/0000-0001-9056-9118
Email: rrader@une.edu.au
UNE Id une-id:rrader
Wilson, Susan C
( author )
OrcID: https://orcid.org/0000-0002-3409-0847
Email: swilso24@une.edu.au
UNE Id une-id:swilso24
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
John Wiley & Sons, Inc
Place of publication
United States of America
DOI
10.1002/etc.5881
UNE publication id
une:1959.11/60378
Abstract

The European honey bee (Apis mellifera) is an important crop pollinator threatened by multiple stressors, including exposure to contaminants. Perfluorooctane sulfonate (PFOS) is a persistent global contaminant that accumulates and bio-magnifies in food chains and is detected in honey. Even sublethal exposure to PFOS is detrimental to bee health, but exposure routes are unclear and nothing is known about bee response (detection, avoidance, or attraction) to PFOS. Using Y‐mazes, we studied the response of individual bees to PFOS‐spiked sugar syrup at four concentrations, 0.02, 30, 61 and103 µg L−1. Bee activity, choice behavior, and drink duration for unspiked and spiked sugar syrup was recorded for 10 min in the Y‐maze system. Most bees (≥80%) tasted and then drank the sugar syrup solutions, including the PFOS‐contaminated syrup. Only at 61 and 103 µg L−1 did bees significantly avoid drinking PFOS‐spiked syrup, and only when given a choice with unspiked syrup. When the choice of consuming unspiked syrup was removed, the bees drank PFOS‐spiked syrup at all the PFOS concentrations tested, and avoidance was not evident. Avoidance was not observed in any treatment at 0.02 or 30 µg L−1 PFOS, concentrations that are frequently reported in environmental waters in contaminated areas. These findings confirm that bees will access PFOS-contaminated resources at concentrations detrimental to the colony health, and provide evidence of potential exposure pathways that may threaten crop pollination services and also human health via food chain transfer in PFOS‐contaminated areas.

Link
Citation
Environmental Toxicology and Chemistry
ISSN
1552-8618
0730-7268

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