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The Spatial Distribution of Perkinsus Marinus, a Protozoan Parasite, in Relation to its Oyster Host (Crassostrea Virginica) and an Ectoparasitic Gastropod (Boonea Impressa)

Published online by Cambridge University Press:  11 May 2009

M.E. White ,
E.N. Powell ,
E.A. Wilson  and
S.M. Ray
M.E. White
Affiliation:
Department of Oceanography, Texas A&M University, College Station, Texas 77843, USA
E.N. Powell
Affiliation:
Department of Oceanography, Texas A&M University, College Station, Texas 77843, USA
E.A. Wilson
Affiliation:
Department of Oceanography, Texas A&M University, College Station, Texas 77843, USA
S.M. Ray
Affiliation:
Department of Marine Biology, Texas A&M University at Galveston, Galveston, Texas 77550, USA
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Extract

Perkinsus marinus, a protozoan parasite of oysters, is an important cause of oyster mortality in the Gulf of Mexico and along the south-eastern coast of the United States (Hofstetter, 1977; Quick & Mackin, 1971). Infections are patchily distributed on many reefs, often with uninfected oysters adjacent to infected oysters. The primary mechanism of transmission from one oyster to another is through the water (Ray, 1954; Mackin, 1962; Andrews, 1965). Because dilution rapidly reduces the number of infective elements below the dosage required to initiate new infections (Andrews, 1979), transmission is most efficient over very short distances and declines rapidly within a few metres of the source.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 69 , Issue 3 , August 1989 , pp. 703 - 717
Copyright
Copyright © Marine Biological Association of the United Kingdom 1989

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