Skip to main content
U.S. flag

An official website of the United States government

Ichthyophonus in sport-caught groundfishes from southcentral Alaska

June 5, 2018

This report of Ichthyophonus in common sport-caught fishes throughout the marine waters of southcentral Alaska represents the first documentation of natural Ichthyophonus infections in lingcod Ophiodon elongates and yelloweye rockfish Sebastes ruberrimus. In addition, the known geographic range of Ichthyophonus in black rockfish S. melanops has been expanded northward to include southcentral Alaska. Among all species surveyed, the infection prevalence was highest (35%, n = 334) in Pacific halibut Hippoglossus stenolepis. There were no gross indications of high-level infections or clinically diseased individuals. These results support the hypothesis that under typical conditions Ichthyophonus can occur at high infection prevalence accompanied with low-level infection among a variety of fishes throughout the eastern North Pacific Ocean, including southcentral Alaska.

Citation Information

Publication Year 2018
Title Ichthyophonus in sport-caught groundfishes from southcentral Alaska
DOI 10.3354/dao03218
Authors Bradley P. Harris, Sarah R. Webster, Nathan Wolf, Jacob L. Gregg, Paul Hershberger
Publication Type Article
Publication Subtype Journal Article
Series Title Diseases of Aquatic Organisms
Series Number
Index ID 70197447
Record Source USGS Publications Warehouse
USGS Organization Western Fisheries Research Center