2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/24/2018 | 11:45 AM - 12:00 PM | CRAYFISH ON DRUGS: EFFECTS OF A COMMON ANTI-DEPRESSANT ON CRAYFISH BEHAVIOR AND SUBSEQUENT BIOGEOCHEMICAL IMPACTS | 330 A
CRAYFISH ON DRUGS: EFFECTS OF A COMMON ANTI-DEPRESSANT ON CRAYFISH BEHAVIOR AND SUBSEQUENT BIOGEOCHEMICAL IMPACTS
Pharmaceuticals and personal care products (PPCPs) are ubiquitous in aquatic environments, yet little is known regarding impacts of PPCPs on ecological processes. Selective serotonin reuptake inhibitors (SSRIs), a specific type of PPCP, act as anti-depressants by altering the levels of serotonin in the brain. In aquatic ecosystems, SSRIs can accumulate in invertebrates, affecting aggression and foraging behavior. Impacts of SSRIs on crayfish behavior are particularly interesting as crayfish exhibit increased aggression in response to SSRIs, and are commonly found in anthropogenically-influenced environments. Using a fully-crossed artificial stream experiment, we tested the impacts of a common SSRI, citalopram, crayfish, and the SSRI-crayfish interaction on stream ecosystems. There was no obvious effect on whole-stream metabolism, but whole-stream nitrate uptake decreased in combined crayfish-SSRI streams, suggesting an interaction between SSRIs and crayfish. Furthermore, we used a flume experiment to quantify the effect of SSRI’s on crayfish preference for a conspecific or food. Crayfish exposed to SSRIs were more attracted to food than control crayfish. These results show that SSRIs can indirectly affect ecosystem processes by altering organismal behavior, supporting the claim that PPCPs are ecological disrupting compounds with a range of sublethal effects.
- Biogeochemistry
- Invertebrate
- Behavior
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Presenters/Authors
Alexander Reisinger
(), University of Florida, reisingera@ufl.edu;
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Lindsey Reisinger
(), University of Florida, lreisinger1@ufl.edu;
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Erinn Richmond
(), Monash University , erinn.richmond@monash.edu;
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Emma Rosi
(), Cary Institute of Ecosystem Studies, rosie@caryinstitute.org;
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