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Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii)
The effects of temperature and infection by Ichthyophonus were examined in juvenile Pacific herring (Clupea pallasii) maintained under simulated overwinter fasting conditions. In addition to defining parameters for a herring bioenergetics model (discussed in Vollenweider et al. this issue), these ex...
Autores principales: | , , , , |
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Formato: | Texto |
Lenguaje: | English |
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Hindawi Publishing Corporation
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3095401/ https://www.ncbi.nlm.nih.gov/pubmed/21603200 http://dx.doi.org/10.1155/2011/563412 |
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author | Gregg, Jake L. Vollenweider, Johanna J. Grady, Courtney A. Heintz, Ron A. Hershberger, Paul K. |
author_facet | Gregg, Jake L. Vollenweider, Johanna J. Grady, Courtney A. Heintz, Ron A. Hershberger, Paul K. |
author_sort | Gregg, Jake L. |
collection | PubMed |
description | The effects of temperature and infection by Ichthyophonus were examined in juvenile Pacific herring (Clupea pallasii) maintained under simulated overwinter fasting conditions. In addition to defining parameters for a herring bioenergetics model (discussed in Vollenweider et al. this issue), these experiments provided new insights into factors influencing the infectivity and virulence of the parasite Ichthyophonus. In groups of fish with established disease, temperature variation had little effect on disease outcome. Ichthyophonus mortality outpaced that resulting from starvation alone. In newly infected fish, temperature variation significantly changed the mortality patterns related to disease. Both elevated and lowered temperatures suppressed disease-related mortality relative to ambient treatments. When parasite exposure dose decreased, an inverse relationship between infection prevalence and temperature was detected. These findings suggest interplay between temperature optima for parasite growth and host immune function and have implications for our understanding of how Ichthyophonus infections are established in wild fish populations. |
format | Text |
id | pubmed-3095401 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-30954012011-05-20 Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii) Gregg, Jake L. Vollenweider, Johanna J. Grady, Courtney A. Heintz, Ron A. Hershberger, Paul K. J Parasitol Res Research Article The effects of temperature and infection by Ichthyophonus were examined in juvenile Pacific herring (Clupea pallasii) maintained under simulated overwinter fasting conditions. In addition to defining parameters for a herring bioenergetics model (discussed in Vollenweider et al. this issue), these experiments provided new insights into factors influencing the infectivity and virulence of the parasite Ichthyophonus. In groups of fish with established disease, temperature variation had little effect on disease outcome. Ichthyophonus mortality outpaced that resulting from starvation alone. In newly infected fish, temperature variation significantly changed the mortality patterns related to disease. Both elevated and lowered temperatures suppressed disease-related mortality relative to ambient treatments. When parasite exposure dose decreased, an inverse relationship between infection prevalence and temperature was detected. These findings suggest interplay between temperature optima for parasite growth and host immune function and have implications for our understanding of how Ichthyophonus infections are established in wild fish populations. Hindawi Publishing Corporation 2011 2011-04-26 /pmc/articles/PMC3095401/ /pubmed/21603200 http://dx.doi.org/10.1155/2011/563412 Text en Copyright © 2011 Jake L. Gregg et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Gregg, Jake L. Vollenweider, Johanna J. Grady, Courtney A. Heintz, Ron A. Hershberger, Paul K. Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii) |
title | Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii) |
title_full | Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii) |
title_fullStr | Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii) |
title_full_unstemmed | Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii) |
title_short | Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii) |
title_sort | effects of environmental temperature on the dynamics of ichthyophoniasis in juvenile pacific herring (clupea pallasii) |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3095401/ https://www.ncbi.nlm.nih.gov/pubmed/21603200 http://dx.doi.org/10.1155/2011/563412 |
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