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Påverkar fluoxetin antipredatorbeteendet hos Asellus aquaticus och skiljer sig effekten mellan populationer?
Linköping University, Department of Physics, Chemistry and Biology, Biology.
2017 (Swedish)Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesisAlternative title
Is Asellus aquaticus antipredator behavior affected by fluoxetine and will the effect be different between populations? (English)
Abstract [en]

Chemical substances originating from pharmaceuticals and personal care products are increasing in aquatic ecosystems. One compound of concern is the substance fluoxetine, which is one of the most widely prescribed antidepressant in the world. Recently, fluoxetine has been shown to affect behaviour of aquatic organisms. The aim of this study was to investigate the effects of fluoxetine on the freshwater isopod Asellus aquaticus L. To measure boldness and escape reactions, three concentrations of fluoxetine, 0, 3 and 30 ng L-1 were used in three behaviour assays (time to emerge from a refuge, general activity and escape behaviour from a predator). As study animals, I selected two populations, one from a lake with fish and one from a well without fish, as local predatory regime may affect prey behaviour. The exposure to fluoxetine at the highest concentration 30 ng L-1 caused A. aquaticus to leave the refuge faster in both the populations. Furthermore, fluoxetine affected the populations differently. Animals from the population used to fish changed towards a bolder behaviour, as they shortened the time still after predator attack. Disregarding effects of fluoxetine, the animals not used to fish were more active, made more stops and froze for a longer time after a simulated predator attack. Hence the results indicate that fluoxetine affected A. aquaticus differently depending on habitat. However, effects of fluoxetine in this study were lower than expected from previous studies. To better understand the effects of fluoxetine on A. aquaticus more studies with a wider range of fluoxetine concentrations are needed.

Place, publisher, year, edition, pages
2017. , p. 19
Keywords [en]
Asellus aquaticus, Antipredator behaviour, Behavioural studies, Fluoxetine, Population, Predator
National Category
Natural Sciences Ecology
Identifiers
URN: urn:nbn:se:liu:diva-138576ISRN: LITH-IFM-G-EX--17/3377-SEOAI: oai:DiVA.org:liu-138576DiVA, id: diva2:1111897
Subject / course
Biology
Presentation
2017-05-30, BL32 Elton, Linköpings univeristet, 581 83 Linköping, Linköping, 12:05 (Swedish)
Supervisors
Examiners
Available from: 2017-06-20 Created: 2017-06-19 Last updated: 2017-06-20Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf