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Is predation performance of Pike (Esox lucius) affected by Oxazepam exposure?
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2015 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Pharmaceutical contamination is increasing in the environment and the consequences this will bring are of growing concern. The highest contamination of pharmaceuticals can be found in aquatic ecosystems and the organisms of these systems are therefore of utmost importance to research in order to understand the ecological consequences of pharmaceutical contamination. This report will reveal the effect contamination can have on an important apex predator often found in temperate aquatic systems, the Northern pike (Esox lucius) when exposed to the psychiatric pharmaceutical Oxazepam. The predatory performance of pike was studied before and after Oxazepam exposure by monitoring how fast each pike caught three prey of roach (Rutilus rutilus), as well as observing the amount of failed predation attempts when hunting the roach. The exposed pike displayed more failed predation attempts after exposure as opposed to the control group. Furthermore it took the exposed pike longer to catch all three roach after exposure while the mean for the control group decreased. Hence, Oxazepam exposure seem to have an effect on predation performance of pike but no definite conclusion could be drawn about to which extent this affects the foraging success and thereby the survival of the pike considering the complex nature of aquatic systems. More studies are therefore needed in order to determine the full effect pharmaceutical contamination can have on complex aquatic ecosystems and more specifically on an apex predator.

Place, publisher, year, edition, pages
2015.
Keyword [en]
pharmaceuticals; ecological consequences; aquatic ecosystems; Oxazepam; Esox lucius
National Category
Ecology
Identifiers
URN: urn:nbn:se:umu:diva-108513OAI: oai:DiVA.org:umu-108513DiVA: diva2:853296
Educational program
Bachelor of Science in Biology and Earthscience
Presentation
2015-08-28, 12:30 (English)
Supervisors
Examiners
Available from: 2016-12-31 Created: 2015-09-12 Last updated: 2016-01-07Bibliographically approved

Open Access in DiVA

fulltext(648 kB)19 downloads
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Persson, Josefine
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • 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