Incidence of Ichthyophonus hoferi in Puget Sound fishes and its increase with age of Pacific herring

Journal of Aquatic Animal Health
By: , and 

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Abstract

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.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Incidence of Ichthyophonus hoferi in Puget Sound fishes and its increase with age of Pacific herring
Series title Journal of Aquatic Animal Health
DOI 10.1577/1548-8667(2002)014<0050:IOIHIP>2.0.CO;2
Volume 14
Issue 1
Year Published 2002
Language English
Publisher Taylor & Francis
Contributing office(s) Western Fisheries Research Center
Description 7 p.
First page 50
Last page 56
Country United States
State Washington
Other Geospatial Northern Puget Sound
Online Only (Y/N) N
Additional Online Files (Y/N) N