Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| preliminary note on the occurrence of a new protistan parasite, dermocystidium marinum n. sp. in crassostrea virginica (gmelin). | 1950 | 17791737 | |
| new property of the crystalline style of crassostrea virginica. | 1958 | 17741847 | |
| studies on shell formation. viii. electron microscopy of crystal growth of the nacreous layer of the oyster crassostrea virginica. | electron microscope observations have been made by means of the replica method on growth processes of calcite crystals of the nacreous layer of the shell of the oyster, crassostrea virginica. layer formation is initiated by the secretion of a conchiolin matrix and the deposition of rounded crystal seeds on or in this material. in some areas crystal seeds are elongate and within a given area show a similar orientation, probably due to slower deposition. the seeds appear to increase in size by den ... | 1958 | 13549499 |
| studies on shell formation. vii. the submicroscopic structure of the shell of the oyster crassostrea virginica. | the submicroscopic structure of the growing surface of the shell of the oyster, crassostrea virginica, was studied by means of shadowed replicas. the outer edge of the prismatic region consists of a fine grained matrix enclosing crystals, the surfaces of which show a finely pebbled structure. crystal size varies continously from 0.01 micro to 8 micro. the matrix surface shows no evidence of fibrous structure. the outer portions of the prismatic region exhibit a tile-like arrangement of large cry ... | 1958 | 13549498 |
| cytology of glycogen and lipid storage in the pallium of crassostrea virginica (gmelin). | 1959 | 13811410 | |
| ultrastructure of the spermatozoon of the oyster. crassostrea virginica. | 1960 | 13826203 | |
| studies on shell formation. ix. an electron microscope study of crystal layer formation in the oyster. | details of crystal growth in the calcitostracum of crassostrea virginica have been studied with the purpose of analyzing the formation of the overlapping rows of oriented tabular crystals characteristic of this part of the shell. crystal elongation, orientation, and dendritic growth suggest the presence of strong concentration gradients in a thin layer of solution in which crystallization occurs. formation of the overlapping rows can be explained by three processes observed in the shell: a two-d ... | 1961 | 13783329 |
| aragonite in the resilium of oysters. | aragonite (orthorhombic caco(3)) composes some of the fibers of the resilium of crassostrea virginica (gmelin). | 1962 | 17736856 |
| the relationship between the flagellate protozoon hexamita and the oyster crassostrea virginica. | 1962 | 14498204 | |
| haplosporidium costale (sporozoa) associated with a disease of virginia oysters. | a new species of haplosporidium is reported as the cause of a previously unrecognized disease of crassostrea virginica (gmelin) on the eastern shore of virginia. the species is characterized by small (3.1 by 2.6 micro) operculate spores without projections. infections are first seen in late winter, and mortality reaches its peak in early june. | 1962 | 17811215 |
| oysters: composition of the larval shell. | the shell of the freeswimming veliger larval stage of the common north american oyster crassostrea virginica (gmelin, 1791) is composed of aragonite. this composition contrasts with that of the adult shell, which is composed mainly of calcite, the rhombohedral allomorph of calcium carbonate, and minor amounts of aragonite. | 1964 | 17821418 |
| strontium and magnesium in water and in crassostrea calcite. | distribution of magnesium and strontium was determined between waters and calcites secreted by the oyster species crassostrea virginica and c. rhizophorae in natural habitats at eight localities, from maine to puerto rico. the concentration of strontium in the calcite shells increases with increasing temperature in the range 13 degrees to 25 degrees c, and also with increasing sr(++)/ca(++) molal ratio in the water. the concentration of magnesium in the shells increases irregularly with temperat ... | 1965 | 17835249 |
| ancient oyster shells on the atlantic continental shelf. | shells of long-dead crassostrea virginica are reported at 71 stations in depths of 14 to 82 meters. the depths exceed those of the estuaries where the species flourishes. radiocarbon measurements indicate that the oysters were alive 8000 to 11,000 years ago. it is concluded that the oysters lived in lagoons or estuaries which became submerged when the sea level rose at the end of the latest glacial epoch. | 1965 | 17832789 |
| the accumulation of enteric viruses by the oyster, crassostrea virginica. | 1965 | 14258479 | |
| fluorescent-antibody studies of haplosporidian parasites of oysters in chesapeake and delaware bays. | a fluorescent antibody was produced against a plasmodial oyster parasite thought to be a haplosporidian, minchinia nelsoni, which was termed msx. the antibody reacted with this type of plasmodia from oysters, crassostrea virginica ( gmelin), from all sources, and it also reacted with its sporulating and spore stages. this reaction indicates cospecificity of the stages. no reaction occurred with any stage of another oyster haplosporidian, minchinia costalis, indi- cating that the m. nelsoni and t ... | 1966 | 4958378 |
| sporulation of minchinia nelsoni (haplosporida, haplosporidiidae) in crassostrea virginica (gmelin). | minchinia nelsoni, which haskin, stauber, and mackin found in connective tissue and-digestive diverticula of the american oyster, is characterized by a distinct peripheral endosome in its plasmodial and spore nuclei and by spores of unique dimension (7.5 by 5.4 micro) this species is believed to be the etiologic agent, formerly reported as "msx," responsible for extensive oyster mortalities along the middle atlantic coast. | 1966 | 4958377 |
| the coracidium of the cestode tylocephalum and the migration and fate of this parasite on the american oyster, crassostrea virginica. | 1966 | 5936510 | |
| relationships between bucephalus sp. and crassostrea virginica: a histochemical study of some carbohydrates and carbohydrate complexes occurring in the host and parasite. | 1966 | 4161765 | |
| perivascular leucocytosis and other types of cellular reactions in the oyster crassostrea virginica experimentally infected with the nematode angiostrongylus cantonensis. | 1966 | 5905537 | |
| hemagglutinin in the blood of the oyster crassostrea virginica. | 1966 | 5980200 | |
| chromosome complement of the american oyster crassostrea virginica, as seen in meiotic and cleaving eggs. | 1967 | 5588794 | |
| quantitative studies on trehalose in the oyster, crassostrea virginica gmelin. | 1967 | 6080516 | |
| a proposed life cycle of minchinia nelsoni (haplosporida, haplosporidiidae) in the american oyster crassostrea virginica. | 1967 | 4973774 | |
| respiratory enzymes in mantle homogenates of crassostrea virginica and the effects of minchinia nelsoni (msx), and cochlodinium helicoides on activity levels. | 1967 | 4293116 | |
| concurrent haplosporidian infections of the oyster, crassostrea virginica (gmelin). | 1967 | 4960572 | |
| clostridium botulinum in marine sediments and in the oyster (crassostrea virginica) from mobile bay. | 1967 | 5342368 | |
| nutritional studies of a flagellated protozoan hexamita inflata from the canadian oyster, crassostrea virginica. | 1968 | 5691203 | |
| minchinia nelsoni (haplosporida) disease syndrome in the american oyster crassostrea virginica. | 1968 | 4973751 | |
| bacteriophage clearance in the oyster (crassotrea virginica). | since relatively few quantitative immunological studies had been conducted with invertebrates, this study was designed to learn more about the immune potential of the oyster, a molluscan representative. experiments measured the primary and secondary clearance rates of t2 coliphage in the oyster. the fate of phage injected intracardially or intramuscularly was traced by measuring serum and tissue fluid plaque-forming unit levels at various times postinjection. phage-neutralizing activity was also ... | 1968 | 5646620 |
| experimental hexamitiasis in the oyster crassostrea virginica. | 1968 | 5649249 | |
| the origin, structure, and histochemical characterization of encapsulating cysts in the oyster crassostrea virginica parasitized by the cestode tylocephalum sp. | 1968 | 5649243 | |
| the axenic cultivation of hexamita inflata from crassostrea virginica. | 1968 | 5644412 | |
| elastic-mathematical theory of cells and mitochondria in swelling process. ii. effect of temperature upon modulus of elasticity of membranous material of egg cells of sea urchin, strongylocentrotus purpuratus, and of oyster, crassostrea virginica. | the elastic behavior of the cell wall as a function of the temperature has been studied with particular attention being given to the swelling of egg cells of strongylocentrotus purpuratus and crassostrea virginica in different sea water concentrations at different temperatures. it was found that the modulus of elasticity is a nonlinear function of temperature. at about 12-13 degrees c the modulus of elasticity (e) is constant, independent of the stress (sigma) and strain (epsilon(nu)) which exis ... | 1968 | 5689191 |
| probable neoplastic disease of the hematopoietic system in oysters, crassostrea virginica and crassostrea gigas. | 1969 | 5374694 | |
| an electron-microscope study of the constituents of encapsulating cysts in the american oyster, crassostrea virginica, formed in response to tylocephalum metacestodes. | 1969 | 5385138 | |
| anomalies and malformation in the shells of crassostrea virginica. | 1969 | 5374697 | |
| an unusual lesion in the mantle of the american oyster, crassostrea virginica. | 1969 | 5374695 | |
| reduction of furmarate and oxidation of succinate in crassostrea virginica (gmelin). | 1969 | 4239857 | |
| the effects of minchinia nelsoni infection on enzyme levels in crassostrea virginica. ii. serum phosphohexose isomerase. | 1969 | 4978661 | |
| bacteriological study of laboratory-reared juvenile american oysters (crassostrea virginica). | 1969 | 5371083 | |
| immunological capabilities of the oyster crassostrea virginica. | 1969 | 5795812 | |
| ultrastructure of spermatozoa from the american oyster crassostrea virginica. | 1971 | 5119137 | |
| influence of environmental factors on respiration of excised tissues of american oysters, crassostrea virginica (gmelin). | 1971 | 5575659 | |
| light and electron microscopy of the leucocytes of crassostrea virginica (mollusca: pelecypoda). | 1971 | 5110852 | |
| the inorganic composition of molluscan extrapallial fluid. | the inorganic composition of the extrapallial fluids of mercenaria mercenaria, mytilus edulis and crassostrea virginica was significantly different from sea water. calcium was the principal ion bound in the extrapallial fluids. this binding was accomplished by a non-dialyzable component that appeared to be a glycoprotein. | 1972 | 28368702 |
| oyster herpes-type virus. | a herpes-type virus infection, the first to be found in an invertebrate animal, is reported in the oyster crassostrea virginica. intranuclear herpes-type viral inclusions were more prevalent in the oyster at elevated water temperatures of 28 degrees to 30 degrees c than at normal ambient temperatures of 18 degrees to 20 degrees c. the inclusions were associated with a lethal disease at the elevated temperatures. | 1972 | 5082840 |
| 1. on the coast of florida subtropical lamellibranchs exposed in the tidal region demonstrate a cellular heat resistance which is about 6-7° c higher than in boreal species on the german coast of the north sea. 2. geographically separated populations of the same species, (crassostrea virginica from cape cod and florida, mytilus edulis and macoma balthica from both sides of the atlantic), show only small differences of their cellular heat resistance. thus, no genetically fixed distinctions may be ... | 1972 | 28307202 | |
| an examination of eggs challenged with cryopreserved spermatozoa of the american oyster, crassostrea virginica. | 1973 | 4796016 | |
| ultrastructure of oocytes from the american oyster crassostrea virginica gmelin. | 1973 | 4581468 | |
| the carbohydrate composition of invertebrate hemagglutinin subunits isolated from the lobster panulirus argus and the oyster crassostrea virginica. | 1973 | 4683998 | |
| gamete cross incompatibility and inbreeding in the commercial american oyster, crassostrea virginica gmelin. | 1973 | 4764764 | |
| kinetic properties of lysozyme from the hemolymph of crassostrea virginica. | 1974 | 4852615 | |
| the accumulation of organic and inorganic mercury compounds by the eastern oyster (crassostrea virginica). | 1974 | 4433812 | |
| the effect of temperature on cellular reactions of crassostrea virginica to the injection of avian erythrocytes. | 1974 | 4819579 | |
| single and continuous exposure of the adult american oyster, crassostrea virginica, to marine vibrios. | 1974 | 4597645 | |
| lysosomal and other enzymes in the hemolymph of crassostrea virginica and mercenaria mercenaria. | 1975 | 1183196 | |
| epizootic and enzootic aspects of minchinia nelsoni (haplosporida) disease in maryland oysters. | minichinia nelsoni disease in oysters (crassostrea virginica) from marumsco bar, pocomoke sound, maryland (an estuarine tributary of chesapeake bay) was studied for 8 years (1961-68) to determine epizootiologic relationships concerning life cycle of the parasite, pathologic effects on the host, and effects of physical factors on population density and recruitment of the host and parasite. the study period covered pre-epizootic, epizootic, and post-epizootic disease conditions. data on the native ... | 1975 | 808602 |
| dna sequence organization in the genomes of five marine invertebrates. | the arrangement of repetitive and non-repetitive sequence was studied in the genomic dna of the oyster (crassostrea virginica), the surf clam (spisula solidissima), the horseshoe crab (limulus polyphemus), a nemertean worm (cerebratulus lacteus) and a jelly-fish (aurelia aurita). except for the jellyfish these animals belong to the protostomial branch of animal evolution, for which little information regarding dna sequence organization has previously been available. the reassociation kinetics of ... | 1975 | 238802 |
| a quantitative study of phagocytosis by hemolymph cells of the pelecypods crassostrea virginica and mercenaria mercenaria. | 1975 | 1117165 | |
| occurrence and chemical structure of nonmethylene-interrupted dienoic fatty acids in american oyster crassostrea virginica. | the american oyster, crassostrea virginica, was found to contain structurally homologous nonmethylene-interrupted dienoic (nmid) fatty acids. the major c20 and c22 nonmethylene-interrupted dienoic fatty acid isomers were shown to occur as two pairs of homologues 5,13-20:2 with 7,15-22:2 and 5,11-20:2 with 7,13-22:2. a combination of analytical procedures was required for conclusive structure determination. | 1975 | 1123972 |
| variation in enzyme activities of the american oyster (crassostrea virginica) relative to size and season. | 1975 | 166789 | |
| toxicity of aroclor-r 1254 and its physiological activity in several estuarine organisms. | the occurrence of high concentrations of a pcb (aroclor 1254) in the pensacola estuary prompted field and laboratory studies by the gulf breeze environmental research laboratory (epa). monitoring of the estuary indicates the chemical is present in all components--particularly in sediments and fishes. residues appear to be diminishing in sediments. toxicity tests show estuarine species sensitive at ppb concentrations in water, with a ciliate protozoan (tetrahymena pyriformis w), (fundulus similis ... | 1975 | 805570 |
| role of bacteria in bioaccumulation of mercury in the oyster crassostrea virginica. | an investigation of mercury-resistant bacteria was undertaken to determine their role in the accumulation of mercury in a simplified food chain. oysters (crassostrea virginica) were maintained in a closed system, sealed aquarium with stirred, aerated water containing 10 mug of 203-hgcl2 per liter. uptake of 203-hg by oysters held under control conditions was compared with that of 203-hg uptake by oysters under similar conditions except that mercury-accumulating and mercury-metabolizing species o ... | 1975 | 1147622 |
| purification and properties of adductor muscle phosphofructokinase from the oyster, crassostrea virginica. the aerobic/anaerobic transition: role of arginine phosphate in enzyme control. | phosphofructokinase from oyster (crassostrea virginica) adductor muscle occurs in a single electrophorectic form at an activity of 8.1 mumol of product formed per minute per gram wet weight. the enzyme was purified to homogeneity by a novel method involving extraction in dilute ethanol and subsequent precipitation with polyethylene glycol. oyster adductor phosphofructokinase has a molecular weight of 3400000 +/- 20000 as measured by sephadex gel chromatography. mg2+ or mn2+ can satisfy the dival ... | 1976 | 12948 |
| a comparison of the cholinesterases of an oyster (crassostrea virginica) and a clam (macrocallista nimbosa). | cholinesterase activities in the hearts and ganglia of an oyster (crassostrea virginica) and a venerid clam (macrocallista nimbosa) were measured and compared. tissue extracts were partially purified by ammonium sulfate fractionation followed by gel column chromatography. enzymatic activity was assayed spectrophotometrically; substrates were acetyl-, butyryl-, and propionylthiocholine (atc, btc, ptc). kinetic constants characterizing each enzyme were derived. at all substrate concentrations, the ... | 1976 | 10339 |
| accumulation of cadium by the american oyster, crassostrea virginica. | 1976 | 934270 | |
| experimentally induced elevation of aminopeptidase activity in hemolymph cells of the american oyster, crassostrea virginica. | 1976 | 956671 | |
| oyster-msx interactions: alterations in hemolymph enzyme activities in crassostrea virginica during the course of minchinia nelsoni disease development. | 1976 | 822105 | |
| occurrence of hematopoietic neoplasms in virginia oysters (crassostrea virginica). | a neoplastic disease of the hematopoietic system of oysters was found in tray-cultured native and laboratory-bred populations and was associated with mortalities during field monitoring. the disease, characterized by nuclear abnormalities and intensive proliferation of hemocytes, was first observed at the virginia institute of marine science in 1963. cases rarely occurred during 14 years (1959-1973 inclusive) of regular sampling and monitoring of thousands of oysters. however, two groups exhibit ... | 1976 | 1255763 |
| chlordane: effects on several estuarine organisms. | dynamic marine toxicity tests were performed with technical grade chlordan and eastern oysters (crassostrea virginica), pink shrimp (penaeus duorarum), grass shrimp (palaemonetes pugio), sheepshead minnows (cyprinodon variegatus), and pinfish (lagodon rhomboides). the 96-hr lc20s (and 95% confidence limits) based on measured concentrations of chlordane (in mug/liter) are: ping shrimp 0.4 (0.3-0.6); grass shrimp, 4.8 (4.0-6.0); sheepshead minnows, 24.5 (19.9-28.6); and pinfish, 6.4 (5.0-7.3). the ... | 1976 | 1246088 |
| effects of salinity on three enzymes involved in amino acid metabolism from the american oyster, crassostrea virginica. | 1976 | 1253571 | |
| beta-glucuronidase in the serum and hemolymph cells of mercenaria mercenaria and crassostrea virginica (mollusca: pelecypoda). | 1976 | 1245743 | |
| effects of leached mirex on experimental communities of estuarine animals. | experimental communities of various estuarine animals in outdoor tanks were exposed to a continuous flow of water containing mirex for 10 weeks. the mirex was leached from fire ant bait (0.3% active ingredient) by fresh water which was then mixed with salt water to yield exposure concentrations averaging 0.038 mug/l. the experiment simulated runoff from treated land into estuarine areas. mortality of grass shrimp (palaemonetes vulgaris), pin, shrimp (penaeus duorarum), common mud crabs (panopeus ... | 1976 | 999334 |
| uptake and loss of inorganic mercury in the eastern oyster (crassostrea virginica). | eastern oysters (crassostrea virginica) were found to accumulate significant levels of mercury on exposure to relatively low concentrations of mercuric chloride. accumulation occurred in two distinct phases which may be described as a two compartment system in which accumulation is logarithmic in the first phase and linear in the second. mercury, during the initial phase, showed a minimum outward concentration flux of 0.025 hr-1 indicating reversibility of accumulation prior to the change in pha ... | 1976 | 970986 |
| chemotactic attraction of crassostrea virginica hemolymph cells to staphylococcus lactus. | 1976 | 1245744 | |
| distribution of glycogen resulting from degradation of 14c-labelled bacteria in the american oyster, crassostrea virginica. | 1976 | 815442 | |
| heptachlor: toxicity to and uptake by several estuarine organisms. | technical-grade heptachlor (65% heptachlor, 22% trans-chlordane, 2% cis-chlordane, and 2% nonachlor) was tested in 96-hr bioassays to determine its toxicity to estuarine animals. the test organisms and the 96-hr lc50 or ec50s based on measured concentrations in water) are as follows: american oyster (crassostrea virginica), 1.5 mug/liter; pink shrimp (penaeus duorarum), 0.11 mug/liter; grass shrimp (palaemonetes vulgaris), 1.06 mug/liter; sheepshead minnow (cyprinodon variegatus), 3.68 mug/liter ... | 1976 | 966323 |
| toxicity and bioconcentration of bhc and lindane in selected estuarine animals. | flow-through, 96-hr bioassays were conducted to determine the acute toxicity of technical bhc and lindane to several estuarine animals. test animals and their respective 96-hr lindane lc50 values were: mysid (mysidopsis bahia), 6.3 microgram/l; pink shrimp (penaeus duorarum), 0.17 microgram/l; grass shrimp (palaemonetes pugio), 4.4 microgram/l; sheepshead minnow (cyprinodon variegatus), 104 microgram/l; and pinfish (lagodon rhomboides), 30.6 microgram/l. the 96-hr lc50 values for pink shrimp and ... | 1977 | 71023 |
| elapid alpha-toxins have no effect on the cholinergic responses of bivalve myocardia. | elapid alpha-toxins (alpha-bungarotoxin, alpha-cobratoxin and crude bungarus caeruleus venom) do not affect the myocardial nicotinic ach receptors of the following bivalve molluscs: mercenaria mercenaria, chione cancellata, mya arenaria, mytilus edulis, rangia cuneata and crassostrea virginica. | 1978 | 729727 |
| metal accumulation and depuration by the american oyster, crassostrea virginica. | 1978 | 719198 | |
| the residue up take and histology of american oysters (crassostrea virginica gmelin) exposed to dieldrin. | 1978 | 24488 | |
| comparative study of methods for the enumeration of total and fecal coliforms in the eastern oyster, crassostrea virginica. | violet red bile agar and coli-count sampler (millipore corp.) procedures were shown to be acceptable alternatives to the standard most-probable-number method for monitoring relative coliform levels in oysters. | 1978 | 367271 |
| cryopreservation of spermatozoa of the american oyster, crassostrea virginica gmelin. | 1979 | 520008 | |
| studies on the depuration of cadmium and copper by the american oyster crassostrea virginica. | 1979 | 497415 | |
| isolation and partial characterization of a cadmium-binding protein from the american oyster (crassostrea virginica). | american oysters (crassostrea virginica) were exposed to 0.1 ppm cadmium for 0--15 days in a flowing seawater system and then placed into clean flowing seawater for 24 h prior to sacrifice. whole oysters were homogenized and a cadmium-binding protein isolated and purified by a process of centrifugation, heat-treatment, sephadex g-75 chromatography, deae cellulose chromatography and disc gel electrophoresis. a highly anionic protein which is not present in control oysters was found to be present ... | 1979 | 466730 |
| bioaccumulation of cadmium in marine organisms. | a general review of cadmium concentrations in marine organisms and studies of cadmium bioaccumulation is presented. factors which influence cadmium concentrations, such as regional differences, seasonal fluctuations and salinity, are discussed and species which are likely to accumulate cadmium identified. experimental studies designed to investigate the influence of some of these factors on cadmium bioaccumulation in a filter feeding bivalve mollusk, the american oyster (crassostrea virginica), ... | 1979 | 488051 |
| combined effects of salinity, temperature, and copper on embryos and early larvae of the american oyster, crassostrea virginica. | 1979 | 539838 | |
| vivo clearance of enteric bacteria from the hemolymph of the hard clam and the american oyster. | american oysters, crassostrea virginica, and hard clams, mercenaria mercenaria, were experimentally contaminated with escherichia coli, salmonella typhimurium, and shigella flexneri either by intracardial injection or via the natural route of ingestion. bacterial inactivation in the hemolymph was monitored for 72 h after exposure to these enteric pathogens at 20 and 6 degrees c. at 6 degrees c, both mean bacterial uptake by ingestion and subsequent clearance was singificantly lower that at 20 de ... | 1979 | 378127 |
| effect of dietary lipids on growth, tissue composition and metabolism of the oyster (crassostrea virginica). | hatchery reared oysters (crassostrea virginica) were fed six different diets for 30 weeks. the diets contained cod liver oil (clo), corn oil (co), corn oil and cod liver oil (1:2) (co + clo), hyrogenated coconut oil (hco), ethyl esters of cod liver oil fatty acids (sf) or cod liver oil ethyl esters supplemented with cholesterol (ch). data on growth and tissue composition imply that oysters have an essential fatty acid (efa) requirement for both linolenic or omega 3 and linoleic or omega 6 series ... | 1980 | 7381595 |
| three types of acetylcholine response in bivalve heart muscle cells. | 1. the acetylcholine (ach) responses of cardiac muscle cells from three species of bivalves were studied by intracellular recording and ach ionophoresis. heart muscle contraction was abolished by bathing in artificial sea water in which mn(2+) had been substituted for ca(2+).2. three different types of membrane potential changes were observed in response to ach pulses: a slow hyperpolarization in the clam mercenaria mercenaria, a rapid depolarization which was sometimes followed by a slower hype ... | 1980 | 7381787 |
| prismatic cristae and paracrystalline inclusions in mitochondria of myocardial cells of the oyster crassostrea virginica gmelin. | several types of unusual mitochondrial configurations were found in myocardial cells of the oyster crassostrea virginica gmelin. these mitochondria include, in order of frequency, prismatic cristae, filamentous paracrystals in honeycomb and herringbone configurations, and paracrystals composed of rows of electron dense particles. the long, parallel, evenly spaced prismatic cristae are square or rhomboidal in cross section. in the space between the prismatic cristae are rodlike structures (4--6 n ... | 1980 | 7428026 |
| studies of cystic fibrosis utilizing mucociliary activity in oyster gills. | crassostrea virginica, the oyster native to the gulf coast, has served as a source of ciliated epithelium for studies on the inhibitory factor in cystic fibrosis. in these studies, protein molecules with biological activity, obtained from serum, urine, saliva, and cells from cystic fibrosis homozygotes and heterozygotes, were detected, purified, and characterized. properties of these factors are similar to those detected by other ciliated systems in mussel gills and rabbit trachea. although non ... | 1980 | 7002621 |
| morphology of a reo-like virus isolated from juvenile american oysters (crassotrea virginica). | rotational enhancement of image detail performed on a proposed new serotype of reovirus suggested icosahedral symmetry of t = 3 with some morphological features of members of the reoviridae family. | 1980 | 7351535 |
| polychlorinated biphenyls in clams and oysters from new bedford harbor, massachusetts, march 1978. | polychlorinated biphenyl (pcb) concentrations in clams (mercenaria mercenaria) and oysters (crassostrea virginica) from 17 stations of the western and new bedford harbor areas of buzzards bay, massachusetts, clearly show that the new bedford harbor area is severely polluted. up to 5 ppm pcbs (dry weight) were found in shellfish tissue. the most likely sources of the pcbs are chronic releases from two electrical component manufacturers in new bedford. close proximity of the shellfish to the sourc ... | 1981 | 6817293 |
| effect of cadmium body burdens in adult crassostrea virginica on fecundity and viability of larvae. | 1981 | 7296069 | |
| elimination of laboratory-acquired cadmium by the oyster crassostrea virginica in the natural environment. | 1981 | 7284630 | |
| comparison of mutagen accumulation in 3 estuarine species using the salmonella/microsome activation system. | 3 estuarine organisms- oysters (crassostrea virginica), sea squirts (mogulla sp.), and shrimp (peneaus sp.)-were examined for ames test detectable levels of mutagens. whole-tissue extracts of these organisms were made and tested using s. typhimurium strains ta98, ta100, ta1535, ta1537 and ta1538, with and without s9 activation. positive results were obtained with sea squirts and shrimp extracts. activation was not necessary to show activity. toxicity was encountered with oyster extracts. histidi ... | 1981 | 7022185 |
| isolation of vibrio cholerae serotype o1 from the eastern oyster, crassostrea virginica. | two strains of vibrio cholerae serotype o1 inaba were isolated from eastern oysters, crassostrea virginica, collected from estuarine waters in florida during april 1980. the oyster meats and waters from which the oysters were collected had low fecal coliform counts, and the area had no prior evidence of sewage contamination. | 1981 | 7235700 |
| scanning electron microscopy of cristispira species in chesapeake bay oysters. | scanning electron microscopy was employed to observe the physical interactions between cristispira spp. and the crystalline style of the chesapeake bay oyster (crassostrea virginica gmelin 1791). cristispira organisms were found associated with both the inner and outer layers of the posterior two-thirds of the style. the spirochetes possessed blunt-tipped ends, a cell diameter range of 0.6 to 0.8 mum, and distended spirochetal envelopes which followed the contour of the cells. transmission elect ... | 1981 | 16345832 |
| arsenic uptake and loss in the american oyster, crassostrea virginica. | in addition to a control crassostrea virginica was treated with 3 and 5 μg as kg(p-1) for 16 wks at ambient seawater salinity and temperature to determine the potential of c. virginica as an indicator of arsenic pollution. prior to spawning, as much as 10.3±1.5, 12.7±2.7, and 14.1±3.7 μg as g(p-1) dry weight were accumulated in the total soft parts of oysters after treatment with ambient (control), 3 and 5 μg as kg(-1), respectively. immediately after spawning, an increase in tissue arsenic conc ... | 1982 | 24264118 |