| assessment of the northern distribution range of selected perkinsus species in eastern oysters (crassostrea virginica) and hard clams (mercenaria mercenaria) with the use of pcr-based detection assays. | perkinsus species are protistan parasites of molluscs. in chesapeake bay, perkinsus marinus, perkinsus chesapeaki, and perkinsus andrewsi are sympatric, infecting oysters and clams. although p. marinus is a pathogen for crassostrea virginica, it remains unknown whether p. andrewsi and p. chesapeaki are equally pathogenic. perkinsus species have been reported in c. virginica as far north as maine, sometimes associated with high prevalence, but low mortality. thus, we hypothesized that, in additio ... | 2008 | 18564742 |