Impacts of ontogenetic dietary shifts on the food-transmitted intestinal parasite communities of two lake salmonids
Ontogenetic dietary shifts are common in fish and often impact trophically transmitted parasite communities. How parasite species composition and relative abundances change among size classes, and at what rate these changes occur, is rarely examined. Hosts with a broad trophic niche are potentially...
Published in: | International Journal for Parasitology: Parasites and Wildlife |
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ftdoajarticles:oai:doaj.org/article:2ac7904259f748d0b64405c47dab32bb 2023-05-15T14:30:02+02:00 Impacts of ontogenetic dietary shifts on the food-transmitted intestinal parasite communities of two lake salmonids Sebastian Prati Eirik Haugstvedt Henriksen Rune Knudsen Per-Arne Amundsen 2020-08-01T00:00:00Z https://doi.org/10.1016/j.ijppaw.2020.06.002 https://doaj.org/article/2ac7904259f748d0b64405c47dab32bb EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2213224420300572 https://doaj.org/toc/2213-2244 2213-2244 doi:10.1016/j.ijppaw.2020.06.002 https://doaj.org/article/2ac7904259f748d0b64405c47dab32bb International Journal for Parasitology: Parasites and Wildlife, Vol 12, Iss , Pp 155-164 (2020) Arctic charr Brown trout Trophic transmission Subarctic β-Diversity Zoology QL1-991 article 2020 ftdoajarticles https://doi.org/10.1016/j.ijppaw.2020.06.002 2022-12-31T05:32:18Z Ontogenetic dietary shifts are common in fish and often impact trophically transmitted parasite communities. How parasite species composition and relative abundances change among size classes, and at what rate these changes occur, is rarely examined. Hosts with a broad trophic niche are potentially exposed to a large variety of parasite species. The degree of ontogenetic changes in parasite species composition versus changes in parasite abundance should suggestively differ between thropically generalist and specialist host species. In the present study, we explore ontogenetic dietary shifts and their impact on species composition and relative abundance of intestinal parasites in two sympatric salmonid fish species, Arctic charr (Salvelinus alpinus) and brown trout (Salmo trutta) caught in the littoral habitat of a subarctic lake. Our results highlight a close interplay between ontogenetic dietary niche shifts and alterations in the acquisition of trophically transmitted parasites, leading to host-specific differences in the component community of parasites. Ontogenetic changes in the intestinal parasite community related to dietary niche shifts were distinct but less pronounced in Arctic charr than in brown trout due to a broader and more consistent dietary niche of the former and an ontogenetic shift toward piscivory in the latter. At the component community level, changes in parasite assemblages of both host species were driven by a faster increase in the heterogeneity of parasite relative abundance than in the compositional heterogeneity, a pattern that partly may be related to a rather species-poor parasite community of this subarctic study system. Separating compositional heterogeneity from heterogeneity in relative parasite abundance is important to understand how size-dependent variability shapes parasite communities of host populations. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Subarctic Directory of Open Access Journals: DOAJ Articles Arctic International Journal for Parasitology: Parasites and Wildlife 12 155 164 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic charr Brown trout Trophic transmission Subarctic β-Diversity Zoology QL1-991 |
spellingShingle |
Arctic charr Brown trout Trophic transmission Subarctic β-Diversity Zoology QL1-991 Sebastian Prati Eirik Haugstvedt Henriksen Rune Knudsen Per-Arne Amundsen Impacts of ontogenetic dietary shifts on the food-transmitted intestinal parasite communities of two lake salmonids |
topic_facet |
Arctic charr Brown trout Trophic transmission Subarctic β-Diversity Zoology QL1-991 |
description |
Ontogenetic dietary shifts are common in fish and often impact trophically transmitted parasite communities. How parasite species composition and relative abundances change among size classes, and at what rate these changes occur, is rarely examined. Hosts with a broad trophic niche are potentially exposed to a large variety of parasite species. The degree of ontogenetic changes in parasite species composition versus changes in parasite abundance should suggestively differ between thropically generalist and specialist host species. In the present study, we explore ontogenetic dietary shifts and their impact on species composition and relative abundance of intestinal parasites in two sympatric salmonid fish species, Arctic charr (Salvelinus alpinus) and brown trout (Salmo trutta) caught in the littoral habitat of a subarctic lake. Our results highlight a close interplay between ontogenetic dietary niche shifts and alterations in the acquisition of trophically transmitted parasites, leading to host-specific differences in the component community of parasites. Ontogenetic changes in the intestinal parasite community related to dietary niche shifts were distinct but less pronounced in Arctic charr than in brown trout due to a broader and more consistent dietary niche of the former and an ontogenetic shift toward piscivory in the latter. At the component community level, changes in parasite assemblages of both host species were driven by a faster increase in the heterogeneity of parasite relative abundance than in the compositional heterogeneity, a pattern that partly may be related to a rather species-poor parasite community of this subarctic study system. Separating compositional heterogeneity from heterogeneity in relative parasite abundance is important to understand how size-dependent variability shapes parasite communities of host populations. |
format |
Article in Journal/Newspaper |
author |
Sebastian Prati Eirik Haugstvedt Henriksen Rune Knudsen Per-Arne Amundsen |
author_facet |
Sebastian Prati Eirik Haugstvedt Henriksen Rune Knudsen Per-Arne Amundsen |
author_sort |
Sebastian Prati |
title |
Impacts of ontogenetic dietary shifts on the food-transmitted intestinal parasite communities of two lake salmonids |
title_short |
Impacts of ontogenetic dietary shifts on the food-transmitted intestinal parasite communities of two lake salmonids |
title_full |
Impacts of ontogenetic dietary shifts on the food-transmitted intestinal parasite communities of two lake salmonids |
title_fullStr |
Impacts of ontogenetic dietary shifts on the food-transmitted intestinal parasite communities of two lake salmonids |
title_full_unstemmed |
Impacts of ontogenetic dietary shifts on the food-transmitted intestinal parasite communities of two lake salmonids |
title_sort |
impacts of ontogenetic dietary shifts on the food-transmitted intestinal parasite communities of two lake salmonids |
publisher |
Elsevier |
publishDate |
2020 |
url |
https://doi.org/10.1016/j.ijppaw.2020.06.002 https://doaj.org/article/2ac7904259f748d0b64405c47dab32bb |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus Subarctic |
genre_facet |
Arctic charr Arctic Salvelinus alpinus Subarctic |
op_source |
International Journal for Parasitology: Parasites and Wildlife, Vol 12, Iss , Pp 155-164 (2020) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2213224420300572 https://doaj.org/toc/2213-2244 2213-2244 doi:10.1016/j.ijppaw.2020.06.002 https://doaj.org/article/2ac7904259f748d0b64405c47dab32bb |
op_doi |
https://doi.org/10.1016/j.ijppaw.2020.06.002 |
container_title |
International Journal for Parasitology: Parasites and Wildlife |
container_volume |
12 |
container_start_page |
155 |
op_container_end_page |
164 |
_version_ |
1766303968598687744 |