Umeå universitets logga

umu.sePublikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Diet specialization in a fluctuating population of Saduria entomon: a consequence of resource or forager densities?
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap. (Arcum)
2011 (Engelska)Ingår i: Oikos, ISSN 0030-1299, E-ISSN 1600-0706, Vol. 120, nr 6, s. 848-854Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Intraspecific competition has been shown to favor diet specialization among individuals. However, the question whether the competition takes the form of interference or exploitative in driving diet specialization has never been investigated. We investigated individual diet specialization in the isopod Saduria entomon, in relation to forager and resource biomasses in a system that exhibits predator–prey fluctuations in density. We found that individual diet specialization was only affected by the biomass of their preferred prey (Monoporeia affinis) and not by Saduria biomass; diet specialization was higher when Monoporeia biomass was low compared to when there were high Monoporeia biomass. Population diet breadth increased at low Monoporeia biomass whereas individual diet breadths were marginally affected by Monoporeia biomass. Overall, this led to the increase in diet specialization at low Monoporeia biomass. This study shows that predator–prey dynamics might influence diet specialization in the predator and that resource biomass, not forager biomass might be important for individual diet specialization.

Ort, förlag, år, upplaga, sidor
2011. Vol. 120, nr 6, s. 848-854
Nyckelord [en]
disruptive selection; ecological specialization; individual specialization; sympatric speciation; natural-populations; functional-response; alternative prey; niche width; sea otters; competition
Nationell ämneskategori
Miljövetenskap
Identifikatorer
URN: urn:nbn:se:umu:diva-40975DOI: 10.1111/j.1600-0706.2010.18945.xScopus ID: 2-s2.0-79956279489OAI: oai:DiVA.org:umu-40975DiVA, id: diva2:404006
Tillgänglig från: 2011-03-15 Skapad: 2011-03-15 Senast uppdaterad: 2023-03-24Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltextScopus

Person

Svanbäck, RichardRydberg, CeciliaEnglund, Göran

Sök vidare i DiVA

Av författaren/redaktören
Svanbäck, RichardRydberg, CeciliaEnglund, Göran
Av organisationen
Institutionen för ekologi, miljö och geovetenskap
I samma tidskrift
Oikos
Miljövetenskap

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 686 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf