Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission
This is the peer reviewed version of the following article: Henriksen, E.H., Frainer, A., Knudsen, R., Kristoffersen, R., Kuris, A.M., Lafferty, K.D. & Amundsen, P-A. (2019). Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dep...
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Language: | English |
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Online Access: | https://hdl.handle.net/10037/16795 https://doi.org/10.1111/1365-2664.13369 |
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ftunivtroemsoe:oai:munin.uit.no:10037/16795 2023-05-15T14:27:52+02:00 Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission Henriksen, Eirik Haugstvedt Frainer, André Knudsen, Rune Kristoffersen, Roar Kuris, Armand M. Lafferty, Kevin D. Amundsen, Per-Arne 2019-02-25 https://hdl.handle.net/10037/16795 https://doi.org/10.1111/1365-2664.13369 eng eng Wiley Henriksen, E.H. (2021). Long-term dynamics of metazoan parasites in an age- and size-structured host population. (Doctoral thesis). https://hdl.handle.net/10037/22728 . Journal of Applied Ecology info:eu-repo/grantAgreement/RCN/FRIMEDBIO/213610/Norway/The role of parasites in food-web topology and dynamics of subarctic lakes// Henriksen EH, Frainer A, Knudsen R, Kristoffersen R, Kuris AM, Lafferty KD, Amundsen P-A. Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission. Journal of Applied Ecology. 2019;56(6):1482-1491 FRIDAID 1704957 doi:10.1111/1365-2664.13369 0021-8901 1365-2664 https://hdl.handle.net/10037/16795 openAccess VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Journal article Tidsskriftartikkel Peer reviewed acceptedVersion 2019 ftunivtroemsoe https://doi.org/10.1111/1365-2664.13369 2021-10-06T22:54:18Z This is the peer reviewed version of the following article: Henriksen, E.H., Frainer, A., Knudsen, R., Kristoffersen, R., Kuris, A.M., Lafferty, K.D. & Amundsen, P-A. (2019). Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission. Journal of Applied Ecology, 56 (6), 1482-1491, which has been published in final form at https://doi.org/10.1111/1365-2664.13369. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Two common Dibothriocephalus (formerly Diphyllobothrium ) tapeworm species were significantly reduced by experimental culling of their fish host Arctic charr ( Salvelinus alpinus ) in a subarctic lake. Between 1984 and 1991, funnel traps were used to cull ~35 metric tons of Arctic charr, reducing charr density by ~80%. As charr densities decreased, tapeworm prevalence and then intensity also declined over the following three decades, with D. dendriticus (formerly dendriticum ) responding faster than D. ditremus (formerly ditremum ). The two main hypotheses for how culling a host can decrease parasitism are reductions in parasite transmission due to reduced host density and reductions in parasite survival through increases in host mortality rates. We found little evidence that charr density was the main driver for reduced parasite transmission. Instead, decreased survivorship in charr, initially, through fishing‐induced changes in charr age structure, and later through increased predation rates by brown trout, led to increased parasite mortality. Although brown trout, which increased significantly after fish culling, are also hosts, they are often too big for the final host birds to eat, thus becoming parasite sinks. Synthesis and applications . Fish populations with heavy parasite burdens constitute a management problem. Our results show how fish culling can indirectly reduce transmitted parasites through increased parasite mortality. Managing overcrowded fish populations by culling can produce two desirable outcomes: an increase in fish growth rates and reduced parasite burdens. Article in Journal/Newspaper Arctic Arctic charr Arctic Salvelinus alpinus Subarctic University of Tromsø: Munin Open Research Archive Arctic Knudsen ENVELOPE(16.057,16.057,67.137,67.137) Journal of Applied Ecology 56 6 1482 1491 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
spellingShingle |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 Henriksen, Eirik Haugstvedt Frainer, André Knudsen, Rune Kristoffersen, Roar Kuris, Armand M. Lafferty, Kevin D. Amundsen, Per-Arne Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920 VDP::Landbruks- og Fiskerifag: 900::Fiskerifag: 920 |
description |
This is the peer reviewed version of the following article: Henriksen, E.H., Frainer, A., Knudsen, R., Kristoffersen, R., Kuris, A.M., Lafferty, K.D. & Amundsen, P-A. (2019). Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission. Journal of Applied Ecology, 56 (6), 1482-1491, which has been published in final form at https://doi.org/10.1111/1365-2664.13369. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Two common Dibothriocephalus (formerly Diphyllobothrium ) tapeworm species were significantly reduced by experimental culling of their fish host Arctic charr ( Salvelinus alpinus ) in a subarctic lake. Between 1984 and 1991, funnel traps were used to cull ~35 metric tons of Arctic charr, reducing charr density by ~80%. As charr densities decreased, tapeworm prevalence and then intensity also declined over the following three decades, with D. dendriticus (formerly dendriticum ) responding faster than D. ditremus (formerly ditremum ). The two main hypotheses for how culling a host can decrease parasitism are reductions in parasite transmission due to reduced host density and reductions in parasite survival through increases in host mortality rates. We found little evidence that charr density was the main driver for reduced parasite transmission. Instead, decreased survivorship in charr, initially, through fishing‐induced changes in charr age structure, and later through increased predation rates by brown trout, led to increased parasite mortality. Although brown trout, which increased significantly after fish culling, are also hosts, they are often too big for the final host birds to eat, thus becoming parasite sinks. Synthesis and applications . Fish populations with heavy parasite burdens constitute a management problem. Our results show how fish culling can indirectly reduce transmitted parasites through increased parasite mortality. Managing overcrowded fish populations by culling can produce two desirable outcomes: an increase in fish growth rates and reduced parasite burdens. |
format |
Article in Journal/Newspaper |
author |
Henriksen, Eirik Haugstvedt Frainer, André Knudsen, Rune Kristoffersen, Roar Kuris, Armand M. Lafferty, Kevin D. Amundsen, Per-Arne |
author_facet |
Henriksen, Eirik Haugstvedt Frainer, André Knudsen, Rune Kristoffersen, Roar Kuris, Armand M. Lafferty, Kevin D. Amundsen, Per-Arne |
author_sort |
Henriksen, Eirik Haugstvedt |
title |
Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission |
title_short |
Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission |
title_full |
Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission |
title_fullStr |
Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission |
title_full_unstemmed |
Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission |
title_sort |
fish culling reduces tapeworm burden in arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission |
publisher |
Wiley |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/16795 https://doi.org/10.1111/1365-2664.13369 |
long_lat |
ENVELOPE(16.057,16.057,67.137,67.137) |
geographic |
Arctic Knudsen |
geographic_facet |
Arctic Knudsen |
genre |
Arctic Arctic charr Arctic Salvelinus alpinus Subarctic |
genre_facet |
Arctic Arctic charr Arctic Salvelinus alpinus Subarctic |
op_relation |
Henriksen, E.H. (2021). Long-term dynamics of metazoan parasites in an age- and size-structured host population. (Doctoral thesis). https://hdl.handle.net/10037/22728 . Journal of Applied Ecology info:eu-repo/grantAgreement/RCN/FRIMEDBIO/213610/Norway/The role of parasites in food-web topology and dynamics of subarctic lakes// Henriksen EH, Frainer A, Knudsen R, Kristoffersen R, Kuris AM, Lafferty KD, Amundsen P-A. Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission. Journal of Applied Ecology. 2019;56(6):1482-1491 FRIDAID 1704957 doi:10.1111/1365-2664.13369 0021-8901 1365-2664 https://hdl.handle.net/10037/16795 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1111/1365-2664.13369 |
container_title |
Journal of Applied Ecology |
container_volume |
56 |
container_issue |
6 |
container_start_page |
1482 |
op_container_end_page |
1491 |
_version_ |
1766301923212787712 |