Umeå University's logo

umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • 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
DOES THE PRESENCE OF PIKE AFFECT THE GROWTH OF JUVENILE BURBOT?
Umeå University, Faculty of Science and Technology, Department of Ecology and Environmental Sciences.
2024 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The present study investigates the impact of northern pike (Esox Lucius) on the growth of juvenile burbot (Lota lota) in northern lake ecosystems. It is hypothesized that the presence of pike will positively affect the growth of juvenile burbot by reducing interspecific competition and increasing the abundance of benthic invertebrates. To test this hypothesis, electrofishing for juvenile burbot was conducted in the littoral zones of lakes with and without pike in the region Jämtland Härjedalen, Sweden. Data on length and age of the captured burbot were used to compare growth between the two lake types. Contrary to the initial hypothesis, the results show that juvenile burbot were significantly larger at a given age in lakes where pike was absent. This outcome suggests that juvenile burbot may reduce their foraging activity in lakes with pike to minimize predation risk. Since adult burbot has shown to be of greater size in lakes with pike, future research could investigate whether the shift towards piscivory in burbot leads to changes in how they are affected by pike.

Place, publisher, year, edition, pages
2024.
Keywords [en]
age estimation, Esox Lucius, growth dynamics, Lota Lota, predator prey interactions, species interaction
National Category
Ecology
Identifiers
URN: urn:nbn:se:umu:diva-226622OAI: oai:DiVA.org:umu-226622DiVA, id: diva2:1873183
Educational program
Master's Programme in Ecology
Presentation
2024-05-30, 14:30 (English)
Supervisors
Examiners
Available from: 2024-06-24 Created: 2024-06-19 Last updated: 2024-06-24Bibliographically approved

Open Access in DiVA

fulltext(973 kB)68 downloads
File information
File name FULLTEXT01.pdfFile size 973 kBChecksum SHA-512
2959c3a01406ca4aa4cfd89a67fff1a845de3690b6ab8af15820984dd9f2c1dc5466407a00304d1ca9865631db2315f9a7dacdd94d1cf31764dc7ed071233e8e
Type fulltextMimetype application/pdf

By organisation
Department of Ecology and Environmental Sciences
Ecology

Search outside of DiVA

GoogleGoogle Scholar
Total: 68 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 182 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • 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