Document Type
Report
Department/Program
Virginia Institute of Marine Science
Publication Date
7-2006
Abstract
More normal riverflows and salinities returned in 2005 after two very wet years. Temperatures were somewhat colder than normal during the winter, and warmer during the summer. The physical environment was generally more favorable for parasite activity, and thus brought a slight increase in prevalence and intensity of the oyster diseases caused by Perkinsus marinus (Dermo) and Haplosporidium nelsoni (MSX). Among quarterly James River Survey sites, maximum annual P. marinus prevalences returned to levels typical of the mid- 1990s, before the years of drought. P. marinus prevalence reached 92% at Wreck Shoal, 56% at Point of Shoal, 68% at Horsehead Rock, and 8% at Deepwater Shoal, where P. marinus was observed for the first time since early 2003. More advanced, heavy infections became more numerous, but were limited to Wreck Shoal. H. nelsoni was restricted to Wreck Shoal, where it increased in maximum prevalence from 4% to 20%.
DOI
https://doi.org/10.21220/V52X56
Keywords
American Oyster Diseases, Virginia, Chesapeake Bay
Recommended Citation
Carnegie, R., & Burreson, E. M. (2006) Status of the Major Oyster Diseases in Virginia 2005 A Summary of the Annual Monitoring Program. Virginia Institute of Marine Science, William & Mary. https://doi.org/10.21220/V52X56
Included in
Aquaculture and Fisheries Commons, Environmental Health and Protection Commons, Other Immunology and Infectious Disease Commons
