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...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2011-01-01
|
| Series: | Journal of Parasitology Research |
| Online Access: | http://dx.doi.org/10.1155/2011/563412 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832559104966524928 |
|---|---|
| author | Jake L. Gregg Johanna J. Vollenweider Courtney A. Grady Ron A. Heintz Paul K. Hershberger |
| author_facet | Jake L. Gregg Johanna J. Vollenweider Courtney A. Grady Ron A. Heintz Paul K. Hershberger |
| author_sort | Jake L. Gregg |
| collection | DOAJ |
| 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 | Article |
| id | doaj-art-e0a6df2b1d8447e2bb22368c9bed4e34 |
| institution | Kabale University |
| issn | 2090-0023 2090-0031 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Parasitology Research |
| spelling | doaj-art-e0a6df2b1d8447e2bb22368c9bed4e342025-02-03T01:30:58ZengWileyJournal of Parasitology Research2090-00232090-00312011-01-01201110.1155/2011/563412563412Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii)Jake L. Gregg0Johanna J. Vollenweider1Courtney A. Grady2Ron A. Heintz3Paul K. Hershberger4U.S. Geological Survey, Western Fisheries Research Center, Marrowstone Marine Field Station, 616 Marrowstone Point Road, Nordland, WA 98358, USANOAA National Marine Fisheries Service, Alaska Fisheries Science Center, Auke Bay Laboratories, 17109 Pt. Lena Loop Road, Juneau, AK 99801, USAU.S. Geological Survey, Western Fisheries Research Center, Marrowstone Marine Field Station, 616 Marrowstone Point Road, Nordland, WA 98358, USANOAA National Marine Fisheries Service, Alaska Fisheries Science Center, Auke Bay Laboratories, 17109 Pt. Lena Loop Road, Juneau, AK 99801, USAU.S. Geological Survey, Western Fisheries Research Center, Marrowstone Marine Field Station, 616 Marrowstone Point Road, Nordland, WA 98358, USAThe 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.http://dx.doi.org/10.1155/2011/563412 |
| spellingShingle | Jake L. Gregg Johanna J. Vollenweider Courtney A. Grady Ron A. Heintz Paul K. Hershberger Effects of Environmental Temperature on the Dynamics of Ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii) Journal of Parasitology Research |
| 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 |
| url | http://dx.doi.org/10.1155/2011/563412 |
| work_keys_str_mv | AT jakelgregg effectsofenvironmentaltemperatureonthedynamicsofichthyophoniasisinjuvenilepacificherringclupeapallasii AT johannajvollenweider effectsofenvironmentaltemperatureonthedynamicsofichthyophoniasisinjuvenilepacificherringclupeapallasii AT courtneyagrady effectsofenvironmentaltemperatureonthedynamicsofichthyophoniasisinjuvenilepacificherringclupeapallasii AT ronaheintz effectsofenvironmentaltemperatureonthedynamicsofichthyophoniasisinjuvenilepacificherringclupeapallasii AT paulkhershberger effectsofenvironmentaltemperatureonthedynamicsofichthyophoniasisinjuvenilepacificherringclupeapallasii |