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Temperatur- och flödespåverkan på aspens (Leuciscus aspius) lekvandring i Fyrisån och Örsundaån, Uppland
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Biology Education Centre.
2019 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Interconnected freshwater habitats are essential for many fish populations, which allow fish to migrate between areas to fulfil their life-cycle and maximize their fitness. Currently, such populations are negatively affected by human habitat exploitation. As a result, the biodiversity in freshwater ecosystems is decreasing. In this study, I use data from surveys of two Asp (Leuciscus aspius) populations in Uppland to see how a representation of day length, water temperature and water current influence their spawning migrations. I also determine the difference in timing of migration between males and females, and if the individual body size matters. I found that day length, water temperature and water current affect the migratory behavior of Asp. I also found a significant difference in migratory timing between males and females, where males on average arrive 5-6 days earlier than females to spawning areas.

Place, publisher, year, edition, pages
2019. , p. 16
Keywords [en]
fish migration, sexual dimorphism, Cyprinidae
Keywords [sv]
fiskvandring, könsdimorfism, Cyprinidae
National Category
Ecology
Identifiers
URN: urn:nbn:se:uu:diva-383797OAI: oai:DiVA.org:uu-383797DiVA, id: diva2:1317193
External cooperation
Upplandsstiftelsen
Educational program
Bachelor Programme in Biology / Molecular Biology
Supervisors
Examiners
Available from: 2019-05-22 Created: 2019-05-22 Last updated: 2019-05-22Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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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