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Sulfate-Reducing Bacteria Methylate Mercury at Variable Rates in Pure Culture and in Marine Sediments
ABSTRACT Differences in methylmercury (CH3Hg) production normalized to the sulfate reduction rate (SRR) in various species of sulfate-reducing bacteria (SRB) were quantified in pure cultures and inExpand
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Distinguishing between living and nonliving bacteria: Evaluation of the vital stain propidium iodide and its combined use with molecular probes in aquatic samples
Abstract Recent studies have suggested that a large fraction of marine bacterioplankton are either dead or moribund and, therefore, new methods are required to distinguish bacteria of differentExpand
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A quantitative relationship that demonstrates mercury methylation rates in marine sediments are based on the community composition and activity of sulfate-reducing bacteria.
A quantitative framework was developed which estimates mercury methylation rates (MMR) in sediment cores based on measured sulfate reduction rates (SRR) and the community composition sulfate-reducingExpand
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Diversity and Detection of Nitrate Assimilation Genes in Marine Bacteria
ABSTRACT A PCR approach was used to construct a database of nasAgenes (called narB genes in cyanobacteria) and to detect the genetic potential for heterotrophic bacterial nitrate utilization inExpand
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Development of an 18S rRNA gene-targeted PCR-based diagnostic for the blue crab parasite Hematodinium sp..
The 18S rRNA gene from Hematodinum sp., a parasitic dinoflagellate that infects blue crabs, was amplified, cloned, and sequenced. The sequence showed a high similarity (95% at the nucleotide level)Expand
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Evidence for a free-living life stage of the blue crab parasitic dinoflagelate, Hematodinium sp.
Hematodinium sp. is a parasitic dinoflagellate reported to cause disease and death in a variety of crustacean species including the blue crab (Callinectes sapidus). However, because of difficultiesExpand
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Quantitative PCR to estimate copepod feeding
Copepods play a central role in marine food webs as grazers of plankton and as key prey for many predators. Therefore, quantifying their specific trophic interactions is critical for understandingExpand
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Molecular detection of algal prey in copepod guts and fecal pellets
The ability to obtain information about feeding selectivity and rates in situ for key organisms such as copepods and other zooplankton is vital for understanding the mechanisms structuring marineExpand
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Influence of nitrate availability on the distribution and abundance of heterotrophic bacterial nitrate assimilation genes in the Barents Sea during summer
In a transect across Norwegian coastal waters and the Barents Sea to approximately 78° N, distinct patterns in the distribution and abundance of bacterial assimilatory nitrate reductase (nasA) genesExpand
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