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Showing 1 to 17 of 17 for “"mercenaria"”.
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Toxicity of Copper to <I>Mercenaria mercenaria</I> (Hard Clam)
Toxicity of copper to larval <I>Mercenaria mercenaria</I> was evaluated with static non-renewal and continuous renewal methods that permitted daily observation of mortality, activity, development, and metamorphosis without subsampling. Clam larvae, 100 - 150 microns, were held for up to two weeks …
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Dynamique de la reproduction chez le quahaug Mercenaria mercenaria à l'Île-du-Prince-Edouard
Le quahaug nordique Mercenaria mercenaria est connu comme une espèce de bivalve importante pour sa valeur commerciale et récréative dans les provinces atlantiques du Canada. Cependant, le quahaug est à la limite nord de sa distribution géographique, ce qui implique certaines différences …
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Effect of storage temperatures on the microbiological quality, safety, and viability of quahog clams, Mercenaria mercenaria
The objective of this project was to examine the effects of various storage temperatures and times on the microbiological quality, safety, and viability of hard shelled quahog clams. Samples were stored at four different incubation temperatures (3.3, 7.2, 10.0, and 12.S0C) for a period of three …
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The Toxicity of Ammonia to the Summer Flounder (Paralychtus Dentatus), Atlantic Silverside (Menidia Menidia), and Quahog Clam (Mercenaria Mercenaria)
… menidia) and one invertebrate, the Quahog Clam (Mercenaria mercenaria) were tested for acute toxicity to ammonia. The acute tests performed on the Summer Flounder (2 months old) were 48 and 96-hour tests performed in both synthetic seawater and natural seawater. Seven-day chronic tests were also …
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Studies on Structure and Polymerization of Venus Mercenaria Paramyosin Insolution
Made available in DSpace on 2015-05-12T17:12:32Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 6402929.PDF: 4729844 bytes, checksum: ba5398b48cdf914323c8a7eef3e7de73 (MD5) Previous issue date: 1963
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Time-Averaging and Morphology: Variability in Modern Populations and Fossil Assemblages of Mercenaria (Bivalvia)
… between 6 standing crop, living populations of Mercenaria campechiensis (Bivalvia) and two fossil assemblages of M. campechiensis and M. permagna. One fossil sample was collected as a series of superposed units that could be analyzed individually or in aggregate. The x,y coordinates of 13 …
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Morphometric Characterization of a <i>Mercenaria</i> spp. (Bivalvia) Hybrid Zone: Paleontological and Evolutionary Implications
… of an extant, genetically-identified <i>Mercenaria</i> spp. (Bivalvia: Veneridae) hybrid zone using Bookstein coordinates and multivariate methods to answer two questions: (1) can hybrid <i>Mercenaria</i> spp. individuals be identified based on morphology alone, and (2) would a …
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Host preference of Perkinsus species: epizootiological, environmental, and molecular aspects
… and a Perkinsus isolate from the hard clam Mercenaria mercenaria [Perkinsus sp. (M. mercenaria)] are sympatric. In vitro experiments by others suggest a preference of P. marinus for the eastern oyster Crassostrea virginica. Studies conducted in this dissertation on the distribution of …
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Population Variation in the Mitochondrial-DNA of Two Marine Organisms: The Hard Shell Clam <i>Mercenaria spp.</i> and the Killifish, <i>Fundulus Heteroclitus</i>
… <p>Phylogenetic analysis of the clam taxa <em>Mercenaria mercenaria</em>, <em>M. campechiensis</em> and <em>M. mercenaria texana</em> detected similar degrees of divergence between all three taxa (ranging from $\delta$ = 0.053 to 0.020), indicated that the texana group may be of multiple …
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Étude des cils et des mucocytes de la surface abfrontale des branchies de bivalves
… Spisula solidissima, Mya arenaria et Mercenaria mercenaria (eulamellibranche, branchie homorhabdique).
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Extraction et caractérisation partielle de l'ADN mitochondrial de diverses espèces de mollusques du Nouveau-Brunswick
… (Ensis directus), de la palourde du Nord (Mercenaria mercenaria), de la mye comestible (Mya arenaria) et de la moule bleue commune (Mytilus edulis), isolés par la méthode de Lansman et al., possèdent une taille qui se situe dans l'étendue conventionnelle, citée ci-haut. Par contre, la …
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Species-specific patterns in bivalve larval supply to a coastal embayment
… studied, Anomia simplex, Guekensia demissa, and Mercenaria mercenaria, different source areas, patterns for growth, and potential for export were observed. Applying species-specific identification methods to future studies of bivalve larval transport has the potential to relate larval abundance …
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Phenotypic Plasticity of Oral Jaw Dentition in Archosargus Probatocephalus
… groups: one group was fed soft prey, <i>Mercenaria</i> sp. muscle tissue, and the other group was fed hard prey, <i>Mercenaria</i> sp. in the shell, for 365 days. It was hypothesized that the sheepshead fed hard prey would have a thicker tooth enamel layer containing more calcium, and …
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THE IMPORTANCE OF PHYSICAL MIXING AND SEDIMENT CHEMISTRY IN MERCURY AND METHYLMERCURY BIOGEOCHEMICAL CYCLING AND BIOACCUMULATION WITHIN SHALLOW ESTUARIES
… benthic macrofauna. In experiment 2, hard clams, Mercenaria mercenaria, were added to the sediment in the mesocosm tanks. Water, sediment, and biota (zooplankton and clams) samples were collected and analyzed for Hg and MeHg. Using Hg stable isotopes, Hg methylation and MeHg demethylation rates …
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Species-specific patterns in bivalve larval supply to a coastal embayment
… studied, Anomia simplex, Guekensia demissa, and Mercenaria mercenaria, different source areas, patterns for growth, and potential for export were observed. Applying species-specific identification methods to future studies of bivalve larval transport has the potential to relate larval abundance …
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Control Method for Invasive Aquatic Species introduced via Ballast Water: Effects of Carbon Dioxide Supersaturation on Survivorship of Digesia tigrina (Planaria: Maculata) and Lirceus brachyurus (Isopoda: Crustacea) and Effect of High Hydrostatic Pressure Processing on Freely Suspended and Shellfish Associated T7 Bacteriophage
… a model for animal virus behavior. Both clams (Mercenaria mercenaria) and oysters (Crassostrea virginica) were homogeneously blended separately and inoculated with bacteriophage T7. The inoculated shellfish meat, as well as freely suspended virus samples, were subjected to HPP under the …
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Estuarine Ingress of the Blue Crab Callinectes Sapidus
… Carolina, USA. Data from C. similis, Menippe mercenaria, Pachygrapsus transversus, and Arenaeus cribrarius are included in some chapters for comparison. Changes in tolerance to low salinity were examined by: 1) exposing postlarvae (megalopae) collected in coastal and estuarine areas to a range …