Parasitism and food web dynamics of juvenile Pacific salmon
There is an increasing realization of the diverse mechanisms by which parasites and pathogens influence the dynamics of host populations and communities. In multi-host systems, parasites may mediate food web dynamics with unexpected outcomes for host populations. Models have been used to explore the...
Main Authors: | , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Figshare
2016
|
Subjects: | |
Online Access: | https://dx.doi.org/10.6084/m9.figshare.c.3308751 https://figshare.com/collections/Parasitism_and_food_web_dynamics_of_juvenile_Pacific_salmon/3308751 |
id |
ftdatacite:10.6084/m9.figshare.c.3308751 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.6084/m9.figshare.c.3308751 2023-05-15T17:59:36+02:00 Parasitism and food web dynamics of juvenile Pacific salmon Peacock, Stephanie J. Krkošek, Martin Bateman, Andrew W. Lewis, Mark A. 2016 https://dx.doi.org/10.6084/m9.figshare.c.3308751 https://figshare.com/collections/Parasitism_and_food_web_dynamics_of_juvenile_Pacific_salmon/3308751 unknown Figshare https://dx.doi.org/10.1890/es15-00337.1 CC-BY http://creativecommons.org/licenses/by/3.0/us CC-BY Environmental Science Ecology FOS Biological sciences Collection article 2016 ftdatacite https://doi.org/10.6084/m9.figshare.c.3308751 https://doi.org/10.1890/es15-00337.1 2021-11-05T12:55:41Z There is an increasing realization of the diverse mechanisms by which parasites and pathogens influence the dynamics of host populations and communities. In multi-host systems, parasites may mediate food web dynamics with unexpected outcomes for host populations. Models have been used to explore the potential consequences of interactions between hosts, parasites and predators, but connections between theory and data are rare. Here, we consider sea louse parasites ( Lepeophtheirus salmonis ), which directly increase mortality of juvenile salmon hosts ( Oncorhynchus spp.). We use mathematical models and field-based experiments to investigate how the indirect effects of parasitism via predation influence mortality of sympatric juvenile chum salmon ( O. keta ) and pink salmon ( O. gorbuscha ). Our experiments show that coho salmon predators ( O. kisutch ) selectively prey on pink salmon and on parasitized prey. Preference for pink salmon increased slightly when prey were parasitized by sea lice, although there was considerable uncertainty regarding this result. Despite this uncertainty, we show that even the small increase in preference that we observed may be biologically significant. We calculate a critical threshold of pink salmon abundance above which chum salmon may experience a parasite-mediated release from predation as predation shifts towards preferred prey species. This work highlights the importance of considering community interactions, such as predation, when assessing the risk that emerging parasites and pathogens pose to wildlife populations. Article in Journal/Newspaper Pink salmon DataCite Metadata Store (German National Library of Science and Technology) Keta ENVELOPE(-19.455,-19.455,65.656,65.656) Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science Ecology FOS Biological sciences |
spellingShingle |
Environmental Science Ecology FOS Biological sciences Peacock, Stephanie J. Krkošek, Martin Bateman, Andrew W. Lewis, Mark A. Parasitism and food web dynamics of juvenile Pacific salmon |
topic_facet |
Environmental Science Ecology FOS Biological sciences |
description |
There is an increasing realization of the diverse mechanisms by which parasites and pathogens influence the dynamics of host populations and communities. In multi-host systems, parasites may mediate food web dynamics with unexpected outcomes for host populations. Models have been used to explore the potential consequences of interactions between hosts, parasites and predators, but connections between theory and data are rare. Here, we consider sea louse parasites ( Lepeophtheirus salmonis ), which directly increase mortality of juvenile salmon hosts ( Oncorhynchus spp.). We use mathematical models and field-based experiments to investigate how the indirect effects of parasitism via predation influence mortality of sympatric juvenile chum salmon ( O. keta ) and pink salmon ( O. gorbuscha ). Our experiments show that coho salmon predators ( O. kisutch ) selectively prey on pink salmon and on parasitized prey. Preference for pink salmon increased slightly when prey were parasitized by sea lice, although there was considerable uncertainty regarding this result. Despite this uncertainty, we show that even the small increase in preference that we observed may be biologically significant. We calculate a critical threshold of pink salmon abundance above which chum salmon may experience a parasite-mediated release from predation as predation shifts towards preferred prey species. This work highlights the importance of considering community interactions, such as predation, when assessing the risk that emerging parasites and pathogens pose to wildlife populations. |
format |
Article in Journal/Newspaper |
author |
Peacock, Stephanie J. Krkošek, Martin Bateman, Andrew W. Lewis, Mark A. |
author_facet |
Peacock, Stephanie J. Krkošek, Martin Bateman, Andrew W. Lewis, Mark A. |
author_sort |
Peacock, Stephanie J. |
title |
Parasitism and food web dynamics of juvenile Pacific salmon |
title_short |
Parasitism and food web dynamics of juvenile Pacific salmon |
title_full |
Parasitism and food web dynamics of juvenile Pacific salmon |
title_fullStr |
Parasitism and food web dynamics of juvenile Pacific salmon |
title_full_unstemmed |
Parasitism and food web dynamics of juvenile Pacific salmon |
title_sort |
parasitism and food web dynamics of juvenile pacific salmon |
publisher |
Figshare |
publishDate |
2016 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.3308751 https://figshare.com/collections/Parasitism_and_food_web_dynamics_of_juvenile_Pacific_salmon/3308751 |
long_lat |
ENVELOPE(-19.455,-19.455,65.656,65.656) |
geographic |
Keta Pacific |
geographic_facet |
Keta Pacific |
genre |
Pink salmon |
genre_facet |
Pink salmon |
op_relation |
https://dx.doi.org/10.1890/es15-00337.1 |
op_rights |
CC-BY http://creativecommons.org/licenses/by/3.0/us |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.3308751 https://doi.org/10.1890/es15-00337.1 |
_version_ |
1766168443282784256 |