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Påverkan av habitatkomplexitet och infektionsgrad av flodpärlmusslans larver på öringinteraktioner
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Environmental and Life Sciences (from 2013).
2019 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
The effects of habitat complexity and infections from freshwater pearl mussel larvae on brown trout interactions (English)
Abstract [en]

Many species are today threatened by extinction. In streams and rivers, the historical clearing of obstacles in favour of transportation of floating timber has led to a decrease in the important habitat complexity. The larvae of freshwater pearl mussel (Margaitifera margaritifera) lives as a parasite on the gills of brown trout (Salmo trutta)wich effects the host negatively. In this study the effects of the activity, the amount of prey captured and the amount of initiated interaction with other trouts in different habitat complexity and different grade of infection from glochidia was investigated. The behaviour of brown trout was studies in the laboratory at Karlstads university in 2015. Analyses from data collected in laboratory studies at Karlstad University showed that there was no significant difference in activity or the amount of food captured between fish in complex and homogeneous habitats with high or low infection. In the case of initiated interactions there was a significantly higher rate of initiated interactions in homogeneous habitats than in complex habitats. The understanding of how the host is affected by parasites and even a changing habitat is important to be able to protect sensitive species with a parasitic lifecycle. 

Place, publisher, year, edition, pages
2019. , p. 9
Keywords [sv]
Öring, Flodpärlmussla, Infektion, Beteende
National Category
Ecology
Identifiers
URN: urn:nbn:se:kau:diva-72636OAI: oai:DiVA.org:kau-72636DiVA, id: diva2:1326173
Subject / course
Biology
Educational program
Biology programme, 180 hp
Supervisors
Examiners
Available from: 2019-06-24 Created: 2019-06-17 Last updated: 2019-06-24Bibliographically approved

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Department of Environmental and Life Sciences (from 2013)
Ecology

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
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  • Other style
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Language
  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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