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Psychoactive pollution suppresses individual differences in fish behaviour

Polverino, Giovanni and Martin, Jake M. and Bertram, Michael and Soman, Vrishin R. and Tan, Hung and Brand, Jack A. and Mason, Rachel T. and Wong, Bob B. M. (2021). Psychoactive pollution suppresses individual differences in fish behaviour. Proceedings of the Royal Society B: Biological Sciences. 288 , 20202294
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Abstract

Environmental contamination by pharmaceuticals is global, substantially altering crucial behaviours in animals and impacting on their reproduction and survival. A key question is whether the consequences of these pollutants extend beyond mean behavioural changes, restraining differences in behaviour between individuals. In a controlled, two-year, multigenerational experiment with independent mesocosm populations, we exposed guppies (Poecilia reticulata) to environmentally realistic levels of the ubiquitous pollutant fluoxetine (Prozac). Fish (unexposed: n = 59, low fluoxetine: n = 57, high fluoxetine: n = 58) were repeatedly assayed on four separate occasions for activity and risk-taking behaviour. Fluoxetine homogenized individuals' activity, with individual variation in populations exposed to even low concentrations falling to less than half that in unexposed populations. To understand the proximate mechanism underlying these changes, we tested the relative contribution of variation within and between individuals to the overall decline in individual variation. We found strong evidence that fluoxetine erodes variation in activity between but not within individuals, revealing the hidden consequences of a ubiquitous contaminant on phenotypic variation in fish—likely to impair adaptive potential to environmental change.

Authors/Creators:Polverino, Giovanni and Martin, Jake M. and Bertram, Michael and Soman, Vrishin R. and Tan, Hung and Brand, Jack A. and Mason, Rachel T. and Wong, Bob B. M.
Title:Psychoactive pollution suppresses individual differences in fish behaviour
Series Name/Journal:Proceedings of the Royal Society B: Biological Sciences
Year of publishing :2021
Volume:288
Article number:20202294
Number of Pages:9
ISSN:0962-8452
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Zoology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Behavioural Sciences Biology
Keywords:animal personality, behavioural plasticity, behavioural types, ecotoxicology, individuality, pharmaceuticals
URN:NBN:urn:nbn:se:slu:epsilon-p-110758
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-110758
Additional ID:
Type of IDID
DOI10.1098/rspb.2020.2294
ID Code:22680
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Wildlife, Fish and Environmental Studies
Deposited By: SLUpub Connector
Deposited On:01 Mar 2021 10:23
Metadata Last Modified:01 Mar 2021 10:31

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