Publications

note on the absorption of calcium during the molting of the blue crab, callinectes sapidus.		1914	17787849
the common blue crab in fresh waters.		1938	17832161
hatching of the blue crab, callinectes sapidus rathbun.		1942	17758353
derived photosensitive pigments from invertebrate eyes.	the red pigment in the eyes of the squid, blue crab, and horseshoe crab becomes photosensitive when treated with formalin, and bleaches in the light. the resulting change in density is approximately symmetrical around a maximum at 480 mmicro in the blue green. this difference absorption spectrum is in rough agreement with the spectral sensitivity of the cephalopod eye and differs only slightly from the difference absorption spectrum of vertebrate visual purple. the formalin-sensitized pigment is ...	1943	19873349
fungus infection of eggs of the blue crab callinectes sapidus rathbun.		1944	17814291
anatomy and histology of the male reproductive system of callinectes sapidus rathbun.		1947	20258886
the nemertean carcinonemertes as an indicator of the spawning history of the host, callinectes sapidus.		1947	20294088
the fungus lagenidium callinectes couch (1942) on eggs of the blue crab in chesapeake bay.		1948	18887846
differential growth and moulting characteristics of the blue crab, callinectes sapidus rathbun.		1949	18113443
a study of the form and growth of the blue crab callinectes sapidus rathbun.		1949	18153117
an analysis of the effects of a sacculinid parasite on the external morphology of callinectes sapidus rathbun.		1950	15420231
[study of the endoplasmic reticulum in muscular fibers of the blue crab by electron microscopy].		1960	14414628
a disease of blue crabs (callinectes sapidus) in maryland and virginia.		1966	5939400
ultrastructural studies of sperm morphology and sperm-egg interaction in the decapod callinectes sapidus.		1966	5948806
free amino acids in developing stages of two crabs, callinectes sapidus rathbun and rhithropanopeus harrisii (gould).		1966	6013506
the glucuronic acid pathway in the blue crab, callinectes sapidus rathbun: the enzymes of the udpglucose to glucuronic acid portion of the pathway.		1967	6035559
effect of single and continuous exposures of gamma radiation on the survival and growth of the blue crab, callinectes sapidus.		1967	6066585
shell disease of the blue crab, callinectes sapidus.		1967	6070691
[research on the role of neurosecretion in sex differentiation in the crab, callinectes sapidus rathbun].		1967	4963852
the salt absorbing cells in the gills of the blue crab (callinectes sapidus rathbun) with notes on modified mitochondria.		1968	4884645
clostridium botulinum type f: isolation from crabs.	two proteolytic strains of clostridium botulinum type f have been isolated from crabs (callinectes sapidus) from the york river in virginia. this is the first time proteolytic strains of this type have been isolated in the united states and the first demonstration of the presence of type f on the eastern coast of the united states.	1968	17836660
the glycogen phosphorylase system from the muscle of the blue crab: callinectes danae.		1969	4977724
the hemolymph proteins of the blue crab, callinectes sapidus. ii. a lipoprotein serologically identical to oocyte lipovitellin.		1969	4978665
sterols, fatty acids and sterol content in eggs and hepatopancreas of the blue crab callinectes sapidus (rathbun).		1969	5372851
conversion of progesterone to 11-deoxycorticosterone by the androgenic gland of the blue crab (callinectes sapidus rathbun).		1969	5765442
volume control by muscle fibers of the blue crab. volume readjustment in hypotonic salines.	single isolated muscle fibers from the walking legs of the blue crab, callinectes sapidus act as boyle-van't hoff osmometers with an osmotically inactive volume of 33 %. fibers in hypotonic salines undergo a spontaneous volume readjustment toward the initial volumes of the cells found in isotonic salines. the volume readjustment is initiated by the increase in cell volume in hypotonic salines and appears to be dependent on the duration of exposure of the fiber to external sodium, the sodium conc ...	1969	5767335
vibrio parahaemolyticus from the blue crab callinectes sapidus in chesapeake bay.	strains of vibrio parahaemolyticus, the etiologic agent of "shirasu" food poisoning in japan, were isolated from moribund blue crabs callinectes sapidus and identified by biochemical and serological techniques.	1969	5770620
the hemolymph proteins of the blue crab, callinectes sapidus. i. hemocyanins and certain other major protein constituents.		1969	5788602
molt cycle regulation of nucleotide pyrophosphatase in the hepatopancreas of the blue crab, callinectes sapidus rathbun.		1969	4304992
biological relationship of callinectes sapidus (rathbun) with carcinonemerteans, bryozoan, and barnacles.		1970	5412351
electrical properties of axons of callinectes sapidus.		1970	5459481
ultrastructural study of microsporidian development. i. nosema sp. sprague, 1965 in callinectes sapidus rathbun.		1970	4986525
isolation of vibrio parahaemolyticus from the processed meat of chesapeake bay blue crabs.	a method for the recovery of vibrio parahaemolyticus from seafoods is described. by this procedure, a total of 56 biochemically positive cultures of v. parahaemolyticus were recovered from market samples of chesapeake bay processed blue crab (cooked, picked, packed, and refrigerated meat). all of the isolates were tested serologically, and 22 strains were serotyped according to the schema of sakazaki as follows: k3, k5, k28, k31, k36, k37, k39, k43, and k44. these results indicate the broad dist ...	1970	4921056
comparative hemolytic activity of vibrio parahaemolyticus and related vibrios.	the hemolytic activities of 91 strains of vibrio parahaemolyticus isolated from human diarrheal stools, sea fish, and sea water; 21 suspected v. parahaemolyticus cultures isolated from wound infections; 14 nonpathogenic marine vibrios; and 21 v. parahaemolyticus isolated from moribund blue crabs callinectes sapidus were compared. potentially pathogenic v. parahaemolyticus strains could be differentiated from the related nonpathogenic marine vibrios, because the former hemolyzed hamster, sheep, a ...	1970	16557747
[comparative study of the ultrastructure of androgenic glands from normal and eyestalkless crabs during larval life or after puberty in the species: rhithropanopeus harrisii (gould) and callinectes sapidus rathbun].		1971	5157128
ultrastructural study of the neurosecretory granules in the sinus gland of the blue crab, callinectes sapidus.		1971	5543303
steroidogenesis in the blue crab callinectes sapidus rathbun.		1971	5559128
potentiometric evidence for the active transport of sodium and chloride across excised gills of callinectes sapidus.		1971	4150220
isosmotic intracellular regulation and redox changes in the respiratory chain components of callinectes sapidus isolated muscle fibers.		1972	4348290
evoked activity in the nervous system of callinectes sapidus following phasic excitation of the statocysts.		1972	4638898
enzymatic mechanisms during temperature acclimation of the blue crab, callinectes sapidus. i. oxygen consumption and activity of glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase.		1972	4644212
enzymatic mechanisms during temperature acclimation of the blue crab, callinectes sapidus. ii. kinetic and thermodynamic studies of glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase.		1972	4644213
bacteriological survey of the blue crab industry.	during sanitation inspections of 46 crabmeat processing plants on the atlantic and gulf coasts, 487 samples of whole crabs immediately after cooking, cooked crabs after cooling, backed or washed (or both) crab bodies and whole crab claws, as well as 1,506 retail units of finished product were collected and analyzed bacteriologically. the 1,506 retail units (1-lb [373.24-g] cans) included 518 cans of regular (special) meat, 487 cans of claw meat, and 501 cans of lump meat. statistical analyses sh ...	1972	4568256
respiration and phosphorylation by mitochondria from the hepatopancreas of the blue crab (callinectes sapidus).		1973	4266066
an attempt to immunize the blue crab, callinectes sapidus, with vertebrate red blood cells.		1973	4692770
chitinoclastic bacteria associated with shell disease in penaeus shrimp and the blue crab (callinectes sapidus).		1973	4701183
amino-acid metabolism during osmotic stress in isolated axons of callinectes sapidus.		1974	4823634
biochemical and ultrastructural aspects of ca2+ transport by mitochondria of the hepatopancreas of the blue crab callinectes sapidus.	mitochondria isolated from the hepatopancreas of the blue crab callinectes sapidus show up to 12-fold stimulation of respiration on addition of ca(2+), which is accompanied by ca(2+) accumulation (ca(2+):site = 1.9) and h(+) ejection (h(+):ca(2+) = 0.85). sr(2+) and mn(2+) are also accumulated; mg(2+) is not. a strongly hypertonic medium (383 mosm), mg(2+), and phosphate are required for maximal ca(2+) uptake. ca(2+) uptake takes precedence over oxidative phosphorylation of adp for respiratory e ...	1974	4827906
calcium phosphate granules in the hepatopancreas of the blue crab callinectes sapidus.	the hepatopancreas of the adult male blue crab callinectes sapidus in intermolt was found to contain substantial amounts of calcium, magnesium, and inorganic phosphorus, averaging about 260, 20, and 250 microg-atoms per g wet tissue, respectively, accounting for over 10% of the tissue dry weight. electron microscopy of the intact tissue showed three qualitatively different granular structures having electron densities suggestive of high mineral content. after fractionation of the tissue using ce ...	1974	4827907
kinetics of glycogen phosphorylase a from the muscle of the blue crab, callinectes danae.		1974	4414042
rhodopsin of the blue crab callinectes: evidence for absorption differences in vitro and in vivo.		1974	4423024
co binding by hemocyanins of limulus polyphemus, busycon carica, and callinectes sapidus.		1974	4429663
accumulation of mirex-14c in the adult blue crab (callinectes sapidus).		1974	4433859
the structure of the stomatogastric neuromuscular system in callinectes sapidus, homarus americanus and panulirus argus (decapoda crustacea).		1974	4152406
the effect of external salinity upon lipid synthesis in the blue crab callinectes sapidus rathbun and in the spider crab libinia emarginata leech.		1974	4153714
the effect of salinity and temperature on the ion levels in the hemolymph of the blue crab, callinectes sapidus, rathbun.		1974	4153717
variations in serum constituents of the blue crab, callinectes sapidus: major cations.		1974	4154178
the effect of salinity and sex on the respiration rates of excised gills of the blue crab, callinectes sapidus.		1974	4156238
purification and properties of glycogen phosphorylase a from the muscle of the blue crab, callinectes danae.		1974	4213332
survival studies with spores of clostridium botulinum type e in pasteurized meat of the blue crab callinectes sapidus.	clostridium botulinum type e studies reported in this paper include the incidence of the organism in selected chesapeake bay areas, growth and toxin production in crabmeat homogenates, and the effect of pasteurization upon varying levels of spores in crabmeat. type e spores were detected in 21 of 24 bottom mud samples taken at locations from which blue crabs were being harvested. sterilized crabmeat homogenates inoculated with as little as five spores per 10 g became toxic after 8 days at 50 f, ...	1974	4596746
incidence of clostridium botulinum in crabmeat from the blue crab.	the incidence of clostridium botulinum in fresh crabmeat of blue crab was six out of 986 samples; in pasteurized crabmeat one sample out of 1,000 contained the organism.	1974	4607823
variations in serum constituents of the blue crab, callinectes sapidus: copper and zinc.		1975	234043
temperature effects on axonal conduction in callinectes sapidus (rathbun) and carcinus maenas (l.).		1975	236872
volume regulation and alanine transport. response of isolated axons of callinectes sapidus rathbun to hypo-osmotic conditions.		1975	236878
free amino acid changes in normal and eyestalkless megalopa larvae of the blue crab, callinectes sapidus, during the course of the molt cycle.		1975	236891
the function of hemocyanin in respiration of the blue crab callinectes sapidus.	blood po2 in the blue crab callinectes sapidus, a very active species of tropical origin, is lower at 22 degrees c than that of larger crabs in colder waters. these low oxygen levels permit its hemocyanin to be highly oxygenated at the gill, and to deliver almost half of its oxygen to the tissues in resting animals. sustained muscular activity results in conspicuous decreases in blood po2, ph and hemocyanin oxygenation. although the venous reserve is fully utilized, hemocyanin oxygenation at the ...	1975	240904
the influence of environmental salinity on hemocyanin function in the blue crab, callinectes sapidus.	the effects of inorganic ions and of the hydrogen ion on oxygen-binding properties of most respiratory pigments are opposite. the addition of salt to the medium increases oxygen affinities, and the addition of h+ decreases oxygen affinities of crustacean hemocyanins. these oxygenation properties, as observed in vitro, suggest that the oxygen-transport system must adapt to ionic changes in the blood. in fact, decreases in the salt concentration of the blood of estaurine blue crabs are accompanied ...	1975	240905
ionic and osmotic regulation and metabolic response to salinity of juvenile callinectes sapidus rathbun.		1975	241556
respiration rates and atp concentrations in the excised gills of the blue crab as a function of salinity.		1975	1194
atomic structure of intracellular amorphous calcium phosphate deposits.	the radial distribution function calculated from x-ray diffraction of mineralized cytoplasmic structures isolated from the hepatopancreas of the blue crab (callinectes sapidus) is very similar to that previously found for synthetic amorphous calcium phosphate. both types of mineral apparently have only short-range atomic order, represented as a neutral ion cluster of about 10 a in longest dimension, whose probable composition is expressed by the formula ca9(po4)6. the minor differences observed ...	1975	1056015
bacterial flora of the hemolymph of the blue crab, callinectes sapidus: most probable numbers.	the hemolymph of 290 freshly collected blue crabs from chincoteague bay, va., was sampled over a 15-month period from august 1968 through november 1969 and most probable numbers of bacteria were determined by tube dilution. the hemolymph of 18% of all crabs sampled was found to be sterile, with 16% sterility in summer and 23% in winter samples. despite individual variations, male crabs as a group had a higher bacterial hemolymph burden than females, and among both sexes summer counts were higher ...	1975	1090257
bacterial flora of the hemolymph of the blue crab, callinectes sapidus: numerical taxonomy.	bacteria isolated from the hemolymph of normal blue crabs were found to be predominantly vibrio sp., pseudomonas sp., acinetobacter sp., bacillus sp., flavobacterium sp., and coliforms. vibrio parahaemolyticus, a cosmopolitan facultative pathogen widely implicated in outbreaks of gastroenteritis related to the consumption of improperly processed seafood, was present in crabs collected between the months of may to november and was identified in up to 21% of the hemolymphs sampled.	1975	1090258
a disease of the blue crab, callinectes sapidus, of possible viral etiology.		1975	1151102
tonic immobility in the blue crab (callinectes sapidus, rathbun) its relation to threat of predation.	the tonic immobility. response in the blue crab (callinectes sapidus, rathbun) was investigated in a series of seven experiments. although reported to be a powerful variable in other species, preinduction electric shock produced inconsistent increases in the duration of tonic immobility with the blue crab; manipulations that were more directly relevant to the fear of predation had considerably greater effects than shock. physical damage to the chelipeds, mirror image stimulation, and immobilizat ...	1975	1171124
seasonal effects of leached mirex on selected estuarine animals.	four 28-day seasonal experiments were conducted using selected estuarine animals in outdoor tanks that received continuous flow of mirex-laden water. mirex (dodecachlorooctahydro-1,3,4-metheno-2h-cyclobuta [cd] pentalene) leached from fire ant bait (0.3% mirex) by fresh water and then mixed with salt water was toxic to blue crabs (callinectes sapidus), pink shrimp (penaeus duorarum), and grass shrimp (palaemonetes pugio) but not to sheepshead minnows (cyprinodon variegatus), at concentrations le ...	1975	1190846
gas-bubble disease in the blue crab, callinectes sapidus.		1976	1254984
blue crab mortality: interaction of temperature and ddt residues.	serial observations of ddt-contaminated and uncontaminated salt marshes in the norther gulf of mexico were made in november and december, 1973. blue crab (callinectes sapidus) mortalities observed in the ddt-contaminated marsh during this period were correlated with reduced daily temperature minima. gas chromatographic analysis of hepatopancreas and swimmeret muscle tissue of dead and dying crabs revealed total ddt residue concentrations as high as 39.0 ppm and 1.43 ppm, respectively. it is sugg ...	1976	1267483
a minchinia-like haplosporidan parasitizing blue crabs, callinectes sapidus.		1976	822104
cheliped laterality in callinectes sapidus (crustacea: portunidae).		1976	953070
comparative studies of intra- and extramitochondrial calcium phosphates from the hepatopancreas of the blue crab (callinectes sapidus).	subcellular fractions of cytoplasmic mineral granules and mineral-loaded mitochondria were isolated from whole homogenates of hepatopancreas of the blue crab (callinectes sapidus). chemical, physical, and morphologic studies were carried out on both subcellular fractions, with and without prior removal of organic components by hydrazine extraction. in contrast to cytoplasmic granules, whole mitochondria contained appreciable amounts of mineral ions not associated with a solid mineral phase. quan ...	1976	990969
oxygen consumption of the blue crab, callinectes sapidus rathbun, from proecdysis to postecdysis.		1976	3345
response of isolated axonal preparations to hyperosmoticity: evidence for a cellular volume regulation.	when submitted to a hyperosmotic stress, isolated axons of callinectes sapidus shrink. volume regulation is observed if the experiment is carried out by using serum from a crab adapted to sea water. 3' : 5'-amp and dibutyryl amp are also effective. a compound isolated from the hemolymph and having a molecular weight close to 10 000 mimics the effects of the serum and induces a partial regulation of the axonal volume.	1976	65947
the subunit characterization of callinectes sapidus hemocyanin.	hemocyanin from the blue crab, callinectes sapidus, sediments at 25.7 s and has a native molecular weight of 940 000 +/- 20 000. under solution conditions of increased ph (approximately 10) or ionic strength, the native molecule dissociates to a 17 s species. reversal of this dissociation was unsuccessful. at ph 10 and with the removal of mg2+, the 17 s species reversibly dissociates to form a subunit species which sediments at 6 s. a comparison of the circular dichroic spectra of the 25.7 s and ...	1977	14702
excitatory synapses of blue crab gastric mill muscles.	physiological and ultrastructural studies were made of neuromuscular synapses in stomach muscles, especially two gastric mill muscles of the blue crab innervated by neurons of the stomatogastric ganglion. these muscles depolarized and contracted with application of glutamate, but not acetylcholine, whereas the dorsal dilator muscles of the pyloric region depolarized and contracted in acetylcholine, but not in glutamate. large excitatory postsynaptic potentials (epsp's) of 5-20 mv were recorded i ...	1977	837405
fate of labeled n-alkanes in the blue crab and stripped mullet.	results of these studies demonstrate that the blue crab was readily able to take up and discharge labeled n-alkanes, but it was not able to metabolize them. in contrast, it appears that n-alkanes taken up via the digestive tract in mullet are readily metabolized, probably via microorganisms in the gut. more limited metabolism was observed in mullet when n-alkanes were taken up via the gills.	1977	861400
recognition of viruses and xenogeneic proteins by the blue crab, callinectes sapidus. i. clearance and organ concentration.		1977	205450
the effects of pentachlorophenol (pcp) and 2,4-dinitrophenol (dnp) on the oxygen consumption of tissues from the blue crab, callinectes sapidus, under different osmotic conditions.		1978	28895
characterization of glutathione s-transferase activity in tissues of the blue crab, callinectes sapidus.		1978	30574
temperature and blood acid-base status in the blue crab, callinectes sapidus.	the blood acid-base status of blue crabs. callinectes sapidus, was assessed at temperatures ranging from 10 to 30 degrees c. blood ph varied inversely with temperature, with a slope (dph/tt) of - 0.012. the paco rose only slightly between 10 and 27 degrees c, from 2.09 torr to 2.91 torr, with the result that the total dissolved co2 actually fell slightly due to the decrease in solubility. in vitro the blood behaved like a conventional rosenthal system, with a rise in pco2 at constant ct which wa ...	1978	33428
cytological observations on the blood and hemopoietic tissue in the crab, callinectes sapidus. i. the fine structure of hemocytes from intermolt animals.	a fine structural analysis of hemocytes recovered from the pericardial sinus of the blue crab (callinectes sapidus) demonstrates that hyaline cells, intermediate cells, and granulocytes are present in the hemolymph. a detailed consideration of their shared and differing cytological features suggests that the various blood cells represent different stages of cytogenesis along a common or single path of cellular differentiation. the potential functional complexity of the hemocytes is attested to b ...	1978	204416
nonhomogeneous excitatory synapses of a crab stomach muscle.	neuromuscular synapses of pyloric muscle p1 in the blue crab callinectes sapidus were examined using electrophysiological and electron microscopic methods. the muscle is innervated by a single excitatory axon of the stomatogastric ganglion. excitatory postsynaptic potentials show striking facilitation at very low frequencies of stimulation, indicating very slow decay of the facilitation process after a single nerve impulse. quantal content of transmitter release at a low frequency of stimulation ...	1978	632814
an evaluation of acute bromine chloride toxicity to grass shrimp (palaemonetes spp.) and juvenile blue crabs (callinectes sapidus).		1978	638269
a simple method for the computation of first neighbour frequencies of dnas from cd spectra.	a procedure for the computation of the first neighbour frequencies of dna's is presented. this procedure is based on the first neighbour approximation of gray and tinoco. we show that the knowledge of all the ten elementary cd signals attached to the ten double stranded first neighbour configurations is not necessary. one can obtain the ten frequencies of an unknown dna with the use of eight elementary cd signals corresponding to eight linearly independent polymer sequences. these signals can be ...	1978	673843
identification of species in cooked crabmeat by thin layer isoelectric focusing.	thin layer polyacrylamide gel isoelectric focusing (tlief) is described for characterizing the species-specific, heat-denatured proteins of 8 species of crab: red (geryon quinquedens), rock (cancer irroratus), jonah (cancer borealis), blue (callinectes sapidus), king (paralithodes camtschatica), snow (chionoectes spp.), european edible (cancer pagurus), and dungeness (cancer magister). protein pattern differences are shown not only among species, but also between 2 modes of heat processing of th ...	1979	39059
evaluation of millipore coli-count samplers for monitoring fecal coliforms in the blue crab, callinectes sapidus.	analyses of crab meat homogenates with coli-count samplers (millipore corp.) resulted in fecal coliform counts comparable to counts obtained from standard most-probable-number testing procedures.	1979	391154
changes in ecdysteroids during embryogenesis of the blue crab, callinectes sapidus rathbun.		1979	437355
the influence of salinity on toxicity of cadmium and chromium to the blue crab, callinectes sapidus.		1979	444712
transverse sarcomere splitting. a possible means of longitudinal growth in crab muscles.	transversely split sarcomeres are seen in mouthpart muscles of the blue crab in the electron microscope. sarcomeres split only at the h zone. two new sarcomeres are formed by a z disk which appears in the h zone of the splitting sarcomere. splitting may involve breaking of the thick filaments in the h zone, elongation of these filaments, and formation of both new actin filaments and z-disk materials, sarcomere splitting would allow longitudinal growth of muscle cells without lengthening of sarco ...	1979	457766
effects of mercuric chloride on the resting membrane potentials of blue crab (callinectes sapidus) muscle fibers.	the effects of concentrations of mercuric chloride ranging from 3.68 to 368 microm (1--100 ppm) on the resting membrane potentials of muscle fibers in the extensor muscle of the carpopodite in walking legs of adults blue crabs were investigated in vitro. glass micropipettes filled with saturated solutions of potassium chloride and conventional electronic equipment were used. resting membrane potentials in uncontaminated artificial sea water averaged -78 mv +/- 4 mv (s.e.m.). mercuric chloride ad ...	1979	473223
chlorine, temperature, and exposure duration effects of power plant effluents on juvenile blue crabs callinectes sapidus and grass shrimp palaemonetes pugio.		1979	490683