Advanced

Exploring trophic niches and parasite communities of sympatric Arctic charr and brown trout populations of southern Norway

Paterson, Rachel A. ; Nefjodova, Jelena ; Salis, Romana K. LU and Knudsen, Rune (2019) In Hydrobiologia 840(1). p.271-280
Abstract

Catchment-scale variation between lake habitats has the potential to simultaneously influence the trophic niche and parasite community of fish hosts. In this study, we investigated the trophic niche and parasite community of sympatric Arctic charr and brown trout populations from two inter-connected southern Norwegian lakes at different altitudes. Arctic charr and brown trout occupied profundal and littoral habitats in each lake, respectively, whereas brown trout replaced Arctic charr in pelagic habitats of the lower altitude lake. Distinct between-lake differences in diet and parasite community composition were noted for brown trout; however, both fish species showed highly overlapping trophically transmitted parasite communities... (More)

Catchment-scale variation between lake habitats has the potential to simultaneously influence the trophic niche and parasite community of fish hosts. In this study, we investigated the trophic niche and parasite community of sympatric Arctic charr and brown trout populations from two inter-connected southern Norwegian lakes at different altitudes. Arctic charr and brown trout occupied profundal and littoral habitats in each lake, respectively, whereas brown trout replaced Arctic charr in pelagic habitats of the lower altitude lake. Distinct between-lake differences in diet and parasite community composition were noted for brown trout; however, both fish species showed highly overlapping trophically transmitted parasite communities regardless of the habitats each species used. Our results suggest that environmental differences over relatively limited geographical distances have the potential to influence fish habitat use and parasite community structure.

(Less)
Please use this url to cite or link to this publication:
author
; ; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Diet, Salmo trutta, Salvelinus alpinus, Species richness
in
Hydrobiologia
volume
840
issue
1
pages
271 - 280
publisher
Springer
external identifiers
  • scopus:85065141280
ISSN
0018-8158
DOI
10.1007/s10750-019-3956-1
language
English
LU publication?
no
id
21fc2355-fc23-4700-8c0f-8846fe7edb31
date added to LUP
2019-11-06 14:33:23
date last changed
2020-12-29 04:28:36
@article{21fc2355-fc23-4700-8c0f-8846fe7edb31,
  abstract     = {<p>Catchment-scale variation between lake habitats has the potential to simultaneously influence the trophic niche and parasite community of fish hosts. In this study, we investigated the trophic niche and parasite community of sympatric Arctic charr and brown trout populations from two inter-connected southern Norwegian lakes at different altitudes. Arctic charr and brown trout occupied profundal and littoral habitats in each lake, respectively, whereas brown trout replaced Arctic charr in pelagic habitats of the lower altitude lake. Distinct between-lake differences in diet and parasite community composition were noted for brown trout; however, both fish species showed highly overlapping trophically transmitted parasite communities regardless of the habitats each species used. Our results suggest that environmental differences over relatively limited geographical distances have the potential to influence fish habitat use and parasite community structure.</p>},
  author       = {Paterson, Rachel A. and Nefjodova, Jelena and Salis, Romana K. and Knudsen, Rune},
  issn         = {0018-8158},
  language     = {eng},
  month        = {09},
  number       = {1},
  pages        = {271--280},
  publisher    = {Springer},
  series       = {Hydrobiologia},
  title        = {Exploring trophic niches and parasite communities of sympatric Arctic charr and brown trout populations of southern Norway},
  url          = {http://dx.doi.org/10.1007/s10750-019-3956-1},
  doi          = {10.1007/s10750-019-3956-1},
  volume       = {840},
  year         = {2019},
}