Ingestion of the cyanobacterium Trichodesmium spp. by pelagic harpacticoid copepods Macrosetella, Miracia and Oculosetella

  title={Ingestion of the cyanobacterium Trichodesmium spp. by pelagic harpacticoid copepods Macrosetella, Miracia and Oculosetella},
  author={Judith M. O'Neil and Michael R. Roman},
Trichodesmium is a filamentous, colonial nitrogen fixing cyanobacteria, ubiquitous in tropical and subtropical regions of the world's oceans. Trichodesmium fixes atmospheric nitrogen and can comprise a significant fraction of total primary production in oceanic surface waters. Therefore, the consumption and fate of Trichodesmium has important consequences for understanding carbon and nitrogen cycling in the open ocean. The pelagic harpacticoid copepod Macrosetella gracilis uses Trichodesmium… 
Association of the copepod Macrosetella gracilis with the cyanobacterium Trichodesmium spp. in the North Pacific Gyre
Natural abundance of stable isotopes in copepod tissue from field samples suggested that the diet of M. gracilis was not predominately composed of Trichodesmium spp.
Diversity of the marine cyanobacterium Trichodesmium : characterization of the Woods Hole culture collection and quantification of field populations
Abstract : Trichodesmium is a colonial, N2-fixing cyanobacterium found in tropical oceans. Species of Trichodesmium are genetically similar, but several species coexist. In order to coexist, species
A novel cohabitation between two diazotrophic cyanobacteria in the oligotrophic ocean
Using unialgal enrichments obtained from this cruise, it is shown that these Calothrix-like heterocystous cyanobionts (hetDA for ‘Trichodesmium-associated heterocyStous diazotroph’) fix nitrogen on a diurnal cycle (maximally in the middle of the light cycle with a detectable minimum in the dark) and could potentially influence TrichodesMium-derived nitrogen fixation budgets in the world ocean.
Mesozooplankton Graze on Cyanobacteria in the Amazon River Plume and Western Tropical North Atlantic
This study represents the first evidence of consumption of DDAs, Trichodesmium, and unicellular cyanobacteria by calanoid copepods in an area of the WTNA known for high carbon export.
Potential Impacts of N2-fixing Trichodesmium on Heterotrophic Bacterioplankton Turnover Rates and Organic Carbon Transfer Efficiency in the Subtropical Oligotrophic Ocean System
Bacterial production (BP), primary production (PP) and N2-fixing cyanobacteria, Trichodesmium spp. abundance (i.e., [Tricho#]) were measured in the N. Pacific west-boundary Kuroshio Current in summer
Phototrophic Microorganisms: The Basis of the Marine Food Web
The considerable amount of omics information recently becoming available on both isolates and natural populations of marine oxyphototrophs provide a solid basis for investigating their molecular ecology, their contribution to biogeochemical cycles, as well as their possible utilization in biotechnology, data mining, or biomimetics.
Trophic relationships between metazooplankton communities and their plankton food sources in the Iles Eparses (Western Indian Ocean).
Phenology of Trichodesmium spp. blooms in the Great Barrier Reef lagoon, Australia, from the ESA-MERIS 10-year mission
Generalized additive models (GAM) indicated an increase in bloom occurrences over the 10-year period with seasonal bloom patterns regionally distinct, and other drivers, such as the subregion and the nutrient budget, likely regulate Trichodesmium surface aggregations in the GBR.
Autotrophic picoplankton in mesozooplankton guts: evidence of aggregate feeding in the mesopelagic zone and export of small phytoplankton
Results indicate mesozooplankton grazing on aggregates is a pathway by which flux of picoplankton can be enhanced.


Grazers and Associated Organisms of Trichodesmium
The consumption and fate of Trichodesmium has important consequences for understanding the inputs and outputs of carbon and nitrogen in the open ocean.
Toxicity of blooms of the cyanobacterium Trichodesmium to zooplankton
The marine filamentous bloom-forming cyanobacteria Trichodesmium thiebautii and T. erythraeum were collected at locations in the Carribean during Jan.–Feb. 1991. They were screened for toxicity using
The tropical diazotrophic phytoplankter Trichodesmium: biological characteristics of two common species
The high abundance of T thiebautii relative to T erythraeum in many tropical seas may be due to higher rates of N2 fixation and a previously reported neurotoxin in the former specles.
Trophodynamics of Marine Cyanobacteria Blooms
Although cyanobacteria blooms can dominate annual production and phytoplankton biomass in some marine regions, little is known on the fate of these large aggregations of autotrophic, surface-dwelling
Body length of female Macrosetella gracilis (Copepoda: Harpacticoida) from various depth zones in the Red Sea
Body length of female A4acrosetella gracilis was analysed at different depths, in varlous regions and during 2 seasons in 1980-81 In the Red Sea to suggest possible causes for the formation of M. gracrlis size morphs.
Trichodesmium: Establishment of Culture and Characteristics of N2-Fixation
Properties of this isolate grown under artificial conditions indicate that the organism in culture is similar to Trichodesmium in the natural habitat, and characteristic features of N2-fixation in this organism are reviewed.
Tricho-desmium blooms and new nitrogen in the North Pacific gyre
A method of protecting plant life from injury due to frost or sub-freezing temperatures which comprises applying to the plant an effective, but non-phytotoxic amount, having regard to the plant being
Physiology of carbon photoassimilation by Oscillatoria thiebautii in the Caribbean Sea1
The pattern of carbon flow into the major end products of photosynthesis appeared to be the same for a given photosynthetic rate regardless of irradiance level, and colonies at the second station were interpreted to have been in a nutritionally poor state.