Electronic Supplementary Material: Can reduced predation offset negative effects of sea louse parasites on chum salmon?
The .zip file contains R code and data that accompanies the paper \"Can reduced predation offset negative effects of sea louse parasites on chum salmon?\". The R code includes three main files: (1) code to compile chum salmon spawner-recruit data from escapement, catch and age -at-return,...
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Online Access: | https://era.library.ualberta.ca/items/671ce795-4e15-4b58-8d9c-c8d2cf1f3240 https://doi.org/10.7939/R38C9R49S |
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ftunivalberta:oai:era.library.ualberta.ca:671ce795-4e15-4b58-8d9c-c8d2cf1f3240 2023-05-15T17:59:37+02:00 Electronic Supplementary Material: Can reduced predation offset negative effects of sea louse parasites on chum salmon? Stephanie Peacock James Irvine Brendan Connors Mark Lewis Martin Krkosek 2013/11/06 https://era.library.ualberta.ca/items/671ce795-4e15-4b58-8d9c-c8d2cf1f3240 https://doi.org/10.7939/R38C9R49S English eng https://era.library.ualberta.ca/items/671ce795-4e15-4b58-8d9c-c8d2cf1f3240 doi:10.7939/R38C9R49S http://creativecommons.org/licenses/by-nc/3.0/ CC-BY-NC Functional response Sea lice Predation Salmon Parasites Models Dataset 2013 ftunivalberta https://doi.org/10.7939/R38C9R49S 2022-08-22T20:11:17Z The .zip file contains R code and data that accompanies the paper \"Can reduced predation offset negative effects of sea louse parasites on chum salmon?\". The R code includes three main files: (1) code to compile chum salmon spawner-recruit data from escapement, catch and age -at-return, (2) code to fit a Ricker population model testing for an effect of sea louse abundance on farmed or wild salmon on chum salmon productivity, and (3) code to solve a host-macroparasite model that includes the effect of predation in a multi-host system. Supporting data include escapement, catch and age-at-return data made publicly available by Fisheries and Oceans Canada. Details of the files within are given in the README.txt file. Abstract for the paper: The impact of parasites on hosts is invariably negative when considered in isolation, but may be complex and unexpected in nature. For example, if parasites make hosts less desirable to predators then gains from reduced predation may offset direct costs of being parasitized. We explore these ideas in the context of sea louse infestations on salmon. In Pacific Canada, sea lice can spread from farmed salmon to migrating juvenile wild salmon. Low numbers of sea lice can cause mortality of juvenile pink and chum salmon. For pink salmon, this has resulted in reduced productivity of river populations exposed to salmon farming.However, for chum salmon, we did not find an effect of sea louse infestations on productivity, despite high statistical power. Motivated by this unexpected result, we used a mathematical model to show how a parasite-induced shift in predation pressure from chum salmon to pink salmon could offset negative direct impacts of sea lice on chum salmon. This shift in predation is proposed to occur because predators show an innate preference for pink salmon prey. This preference could be more easily expressed when sea lice compromise juvenile salmon hosts, making them easier to catch. Our results indicate how the ecological context of host-parasite interactions may ... Dataset Pink salmon University of Alberta: Era - Education and Research Archive Canada Pacific |
institution |
Open Polar |
collection |
University of Alberta: Era - Education and Research Archive |
op_collection_id |
ftunivalberta |
language |
English |
topic |
Functional response Sea lice Predation Salmon Parasites Models |
spellingShingle |
Functional response Sea lice Predation Salmon Parasites Models Stephanie Peacock Electronic Supplementary Material: Can reduced predation offset negative effects of sea louse parasites on chum salmon? |
topic_facet |
Functional response Sea lice Predation Salmon Parasites Models |
description |
The .zip file contains R code and data that accompanies the paper \"Can reduced predation offset negative effects of sea louse parasites on chum salmon?\". The R code includes three main files: (1) code to compile chum salmon spawner-recruit data from escapement, catch and age -at-return, (2) code to fit a Ricker population model testing for an effect of sea louse abundance on farmed or wild salmon on chum salmon productivity, and (3) code to solve a host-macroparasite model that includes the effect of predation in a multi-host system. Supporting data include escapement, catch and age-at-return data made publicly available by Fisheries and Oceans Canada. Details of the files within are given in the README.txt file. Abstract for the paper: The impact of parasites on hosts is invariably negative when considered in isolation, but may be complex and unexpected in nature. For example, if parasites make hosts less desirable to predators then gains from reduced predation may offset direct costs of being parasitized. We explore these ideas in the context of sea louse infestations on salmon. In Pacific Canada, sea lice can spread from farmed salmon to migrating juvenile wild salmon. Low numbers of sea lice can cause mortality of juvenile pink and chum salmon. For pink salmon, this has resulted in reduced productivity of river populations exposed to salmon farming.However, for chum salmon, we did not find an effect of sea louse infestations on productivity, despite high statistical power. Motivated by this unexpected result, we used a mathematical model to show how a parasite-induced shift in predation pressure from chum salmon to pink salmon could offset negative direct impacts of sea lice on chum salmon. This shift in predation is proposed to occur because predators show an innate preference for pink salmon prey. This preference could be more easily expressed when sea lice compromise juvenile salmon hosts, making them easier to catch. Our results indicate how the ecological context of host-parasite interactions may ... |
author2 |
James Irvine Brendan Connors Mark Lewis Martin Krkosek |
format |
Dataset |
author |
Stephanie Peacock |
author_facet |
Stephanie Peacock |
author_sort |
Stephanie Peacock |
title |
Electronic Supplementary Material: Can reduced predation offset negative effects of sea louse parasites on chum salmon? |
title_short |
Electronic Supplementary Material: Can reduced predation offset negative effects of sea louse parasites on chum salmon? |
title_full |
Electronic Supplementary Material: Can reduced predation offset negative effects of sea louse parasites on chum salmon? |
title_fullStr |
Electronic Supplementary Material: Can reduced predation offset negative effects of sea louse parasites on chum salmon? |
title_full_unstemmed |
Electronic Supplementary Material: Can reduced predation offset negative effects of sea louse parasites on chum salmon? |
title_sort |
electronic supplementary material: can reduced predation offset negative effects of sea louse parasites on chum salmon? |
publishDate |
2013 |
url |
https://era.library.ualberta.ca/items/671ce795-4e15-4b58-8d9c-c8d2cf1f3240 https://doi.org/10.7939/R38C9R49S |
geographic |
Canada Pacific |
geographic_facet |
Canada Pacific |
genre |
Pink salmon |
genre_facet |
Pink salmon |
op_relation |
https://era.library.ualberta.ca/items/671ce795-4e15-4b58-8d9c-c8d2cf1f3240 doi:10.7939/R38C9R49S |
op_rights |
http://creativecommons.org/licenses/by-nc/3.0/ |
op_rightsnorm |
CC-BY-NC |
op_doi |
https://doi.org/10.7939/R38C9R49S |
_version_ |
1766168471955046400 |