Contents of Volume 15, Number 1

Preface-William S. Fisher, Editor, p. 3

Foreword-Frank O. Perkins, pp. 5-7

Sammy M. Ray
Historical perspective on Perkinsus marinus disease of oysters in the Gulf of Mexico, pp. 9-11

Jay D. Andrews
History of Perkinsus marinus, a pathogen of oysters in Chesapeake Bay 1950-1984, pp. 13-16

Eugene M. Burreson & Lisa M. Ragone Calvo
Epizootiology of Perkinsus marinus disease of oysters in Chesapeake Bay, with emphasis on data since 1985, pp. 17-34

Thomas M. Soniat
Epizootiology of Perkinsus marinus disease of eastern oysters in the Gulf of Mexico, pp. 35-43

Susan E. Ford
Range extension by the oyster parasite Perkinsus marinus into the northeastern United States: response to
climate change?, pp. 45-56

Fu-Lin E. Chu
Laboratory investigations of susceptibility, infectivity and transmission of Perkinsus marinus in oysters, pp. 57-66

Frank O. Perkins
The structure of Perkinsus marinus (Mackin, Owen & Collier, 1950) Levine, 1978 with comments on taxonomy' and
phylogeny of Perkinsus spp., pp. 67-87

Jerome F. La Peyre
Propagation and in vitro studies of Perkinsus marinus, pp. 89-101

David Bushek & Standish K. Allen, Jr.
Races of Perkinsus marinus, pp. 103-107

William S. Fisher & Leah M. Oliver
A whole-oyster procedure for diagnosis of Perkinsus marinus disease using Ray's fluid thioglycollate culture medium, pp. 109-117

Kennedy T. Paynter
The effects of Perkinsus marinus infection on physiological processes in the eastern oyster, Crassostrea virginica, pp. 119-125

Robert S. Anderson
Interactions of Perkinsus marinus with humoral factors and hemocytes of Crassostrea virginica, pp. 127-134

Patrick M. Gaffney & David Bushek
Genetic aspects of disease resistance in oysters, pp. 135-140

Eric N. Powell, John M. Klinck & Eileen E. Hofmann
Modeling diseased oyster populations. II. Triggering mechanisms for Perkinsus marinus epizootics, pp. 141-165

G. E. Krantz & S. J. Jordan
Management alternatives for protecting Crassostrea virginica fisheries in Perkinsus marinus enzootic and epizootic areas, pp. 167-176

Victor S. Kennedy
The ecological role of the eastern oyster, Crassostrea virginica, with remarks on disease, pp. 177-183