Change search
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
Indirect behavioral effects of a piscivore on trophic interactions in stream enclosures
Karlstad University, Faculty of Social and Life Sciences, Department of Biology.ORCID iD: 0000-0002-3191-7140
Karlstad University, Faculty of Social and Life Sciences, Department of Biology.ORCID iD: 0000-0003-2220-1615
2005 (English)In: Archiv für Hydrobiologie, Volume 164, Number 1, September 2005, pp. 39-52(14)Article in journal (Refereed)
Abstract [en]

Abstract:



The indirect behavioral effect of piscivorous pike (Esox lucius) on the growth and diet of brown trout (Salmo trutta) as well as the consequences of the pike-trout interaction for benthic macroinvertebrates and periphytic algae were studied in nine 2 × 3 m field stream enclosures. The indirect effect of pike on trout behavior was studied by holding trout density relatively constant, which was done by replacing consumed trout during the course of the experiment. Three treatments were established, each replicated three times: fishless controls and two fish treatments, one with 15 brown trout (2.5 trout m-2) and one with 15 trout and 1 northern pike (0.17 pike m-2). Growth of brown trout was lower in the presence of pike than in the absence of pike. Pike affected the biomass of the leech, Erpobdella, whose biomass was greater in the presence of pike than in its absence. The biomass of grazing heptageniids was lower in the trout only treatment than in the other two treatments. Moreover, the number of grazing Baetis observed over algal-cultured ceramic tiles was lower in the two different treatments with trout than in the fishless controls. Periphytic chlorophyll-a biomass reflected trout's effect on Baetis as chlorophyll-a biomass was similar in all enclosures with trout (with and without pike), and these enclosures had higher biomasses of chlorophyll-a than the fishless controls.

Place, publisher, year, edition, pages
2005.
National Category
Biological Sciences
Research subject
Biology
Identifiers
URN: urn:nbn:se:kau:diva-20284OAI: oai:DiVA.org:kau-20284DiVA: diva2:593942
Available from: 2013-01-21 Created: 2013-01-21 Last updated: 2015-11-12

Open Access in DiVA

No full text

Other links

http://www.ingentaconnect.com/content/schweiz/afh/2005/00000164/00000001/art00003#avail

Search in DiVA

By author/editor
Greenberg, LarryBergman, Eva
By organisation
Department of Biology
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar

Total: 61 hits
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