Incidence of Ichthyophonus hoferi in Puget Sound fishes and its increase with age of Pacific herring
January 1, 2002
A recent decrease in the mean age of adult Pacific herring Clupea pallasi in Puget Sound was associated with a high prevalence of Ichthyophonus hoferi, a protistan parasite that can be highly pathogenic to Pacific herring. In Puget Sound, high intensities of I. hoferiinfection may be maintained in older cohorts of Pacific herring because the prevalence ofI. hoferi increased with age from 12% among juveniles to 58% among the oldest, age-6 and older cohorts. Low intensities of I. hoferi infection in the region may be maintained in alternative fish hosts, such as surf smelt Hypomesus pretiosus, Puget Sound rockfishSebastes emphaeus, Pacific tomcod Microgadus proximus, and speckled sanddabCithanichthys stigmaeus.
Citation Information
| Publication Year | 2002 |
|---|---|
| Title | Incidence of Ichthyophonus hoferi in Puget Sound fishes and its increase with age of Pacific herring |
| DOI | 10.1577/1548-8667(2002)014<0050:IOIHIP>2.0.CO;2 |
| Authors | P.K. Hershberger, K. Stick, B. Bui, C. Carroll, B. Fall, C. Mork, J.A. Perry, E. Sweeney, J. Wittouck, J. Winton, R. Kocan |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Journal of Aquatic Animal Health |
| Index ID | 70170573 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Western Fisheries Research Center |