| a disease of blue crabs (callinectes sapidus) in maryland and virginia. | | 1966 | 5939400 |
| discovery of an opportunistic starfish pathogen, orchitophrya stellarum, in captive blue crabs, callinectes sapidus. | histophagous scuticociliate infections were discovered in blue crabs, callinectes sapidus, held in research facilities at the virginia institute of marine science. ciliates were observed infecting every tissue examined including the gills, heart, muscle, hepatopancreas, and epidermis. hemolymph smears and histological tissue sections indicated a morphological similarity to mesanophrys chesapeakensis, the only recorded histophagous ciliate infecting blue crabs. however, subsequent analysis of the ... | 2013 | 23954308 |
| disease ecology of hematodinium perezi in a high salinity estuary: investigating seasonal trends in environmental detection. | the blue crab callinectes sapidus has seen a general decline in population levels. one factor influencing mortality is infections by hematodinium perezi, a dinoflagellate parasite. a 2 yr study was conducted in 2014 and 2015 to monitor h. perezi dna within the maryland (usa) coastal bays, comparing seasonal cycles in the abundance of parasite dna in environmental samples to parasite presence in host blue crabs. a late summer to early fall peak in h. perezi infections in blue crabs was observed, ... | 2017 | 28492173 |
| temperature correlates with annual changes in hematodinium perezi prevalence in blue crab callinectes sapidus in florida, usa. | blue crabs callinectes sapidus were monitored biannually throughout florida, usa, for 2 yr using a highly sensitive, quantitative polymerase chain reaction (qpcr) to determine the spatial and temporal changes in prevalence and intensity of hematodinium perezi infections during drought years. despite persistent drought conditions, h. perezi infections were not universally found. overall prevalence was 25.3% (95% ci: 22.8-28.1%) in 1066 crabs sampled from 6 locations (jacksonville, ormond beach, e ... | 2015 | 25850401 |
| real-time pcr-based assay for quantitative detection of hematodinium sp. in the blue crab callinectes sapidus. | hematodinium sp. is a parasitic dinoflagellate infecting the blue crab callinectes sapidus and other crustaceans. pcr-based assays are currently being used to identify infections in crabs that would have been undetectable by traditional microscopic examination. we therefore sought to define the limits of quantitative pcr (qpcr) detection within the context of field collection protocols. we present a qpcr assay based on the hematodinium sp. 18s rrna gene that can detect 10 copies of the gene per ... | 2009 | 19419009 |
| organochlorine residues in shellfish from maryland waters, 1976-1980. | shellfish samples, including the american oyster (craessostrea virginica), the soft shell clam (mya arenaria), the hard shell clam (mercenaria mercenaria) and the blue crab (callinectes sapidus), were taken from the maryland section of the chesapeake bay and its tributaries over a five year period (1976-80) and analyzed to determine residue levels of various organochlorine pesticides. qualitative and quantitative information was obtained for a variety of polychlorinated hydrocarbons. the purpose ... | 1984 | 6501793 |
| trace metal residues in shellfish from maryland waters, 1976-1980. | levels of seven heavy metal residues, arsenic, cadmium, chromium, copper, lead, mercury and zinc were monitored in samples of the american oyster (crassostrea virginica), the soft shell clam (mya arenaria), the hard shell clam (mercinaria mercinaria) and the blue crab (callinectes sapidus). samples were taken from the maryland section of the chesapeake bay and its tributaries over a five year period (1976-80). this study was undertaken to provide an estimate of a baseline for values of trace hea ... | 1984 | 6501792 |
| prevalence of vibrio parahaemolyticus, and vibrio vulnificus in blue crabs (callinectes sapidus), seawater and sediments of the maryland coastal bays. | to determine the prevalence of total and pathogenic vibrio parahaemolyticus (vp) and v. vulnificus (vv) in blue crabs, water and sediment from the maryland coastal bays (mcbs), usa. | 2014 | 25066367 |