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- W2012195304 abstract "DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials DAO 85:193-197 (2009) - DOI: https://doi.org/10.3354/dao02072 Transmission of the parasitic dinoflagellate Hematodinium sp. infection in blue crabs Callinectes sapidus by cannibalism Anna N. Walker1,*, Richard F. Lee2, Marc E. Frischer2 1Department of Pathology, Mercer University School of Medicine, Macon, Georgia 31207, USA 2Skidaway Institute of Oceanography, 10 Ocean Science Circle, Savannah, Georgia 31411, USA *Email: walker_an@mercer.edu ABSTRACT: Infection with the parasitic dinoflagellate Hematodinium sp. can be devastating to blue crab Callinectes sapidus populations. Morbidity and mortality appear to depend on the burden of parasitic organisms. Heavily infected crabs become lethargic and, if not preyed upon, succumb to overwhelming infection. We report on the transmission of Hematodinium sp. into blue crabs that were fed pieces of infected tissues and examined for evidence of infection at time periods from 1 to 48 h and for the general state of their health after 4 d. During the first 16 h after feeding, Hematodinium sp. was found in the gut, followed by large increases in hemolymph hemocytes and the appearance of hemocytic nodules in tissues. By 16 h, the hemocytic nodules appeared poorly circumscribed and disorganized. No nodules were seen in a heavily infected crab after 24 h. By the end of the 48 h after feeding, 73% (11 of 15) of the crabs had shown evidence of infection with Hematodinium sp. Those crabs with infection intensities (Hematodinium sp. as percent of cells in hemolymph) higher than 20% were dead within 4 d. KEY WORDS: Hematodinium · Callinectes · Blue crab · Dinoflagellate · Disease transmission Full text in pdf format PreviousNextCite this article as: Walker AN, Lee RF, Frischer ME (2009) Transmission of the parasitic dinoflagellate Hematodinium sp. infection in blue crabs Callinectes sapidus by cannibalism. Dis Aquat Org 85:193-197. https://doi.org/10.3354/dao02072 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in DAO Vol. 85, No. 3. Online publication date: July 23, 2009 Print ISSN: 0177-5103; Online ISSN: 1616-1580 Copyright © 2009 Inter-Research." @default.
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- W2012195304 title "Transmission of the parasitic dinoflagellate Hematodinium sp. infection in blue crabs Callinectes sapidus by cannibalism" @default.
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