Regenerated extracellular NH4+ affects the motile chemosensory responses of batch-cultured Oxyrrhis marina
نویسنده
چکیده
Regenerated extracellular NH4 (+)in laboratory batch cultures of the heterotrophic marine microzooplankter Oxyrrhis marina affects the strength and consistency of chemotaxes elicited by synthetic and biogenic chemoattractants. The ecological relevance of experiments with batch-cultured O. marina and limitations of the microcapillary assay for the study of chemosensory behaviours are discussed.
منابع مشابه
Evidence for Strain-Specific Exometabolomic Responses of the Coccolithophore Emiliania huxleyi to Grazing by the Dinoflagellate Oxyrrhis marina
Citation: Poulson-Ellestad KL, Harvey EL, Johnson MD and Mincer TJ (2016) Evidence for Strain-Specific Exometabolomic Responses of the Coccolithophore Emiliania huxleyi to Grazing by the Dinoflagellate Oxyrrhis marina. Front. Mar. Sci. 3:1. doi: 10.3389/fmars.2016.00001 Evidence for Strain-Specific Exometabolomic Responses of the Coccolithophore Emiliania huxleyi to Grazing by the Dinoflagellat...
متن کاملThe protozoa dinoflagellate Oxyrrhis marina contains selenoproteins and the relevant translation apparatus.
In the phylogenetic tree, selenoproteins and the corresponding translation machinery are found in Archaea, Eubacteria, and animals, but not in fungi and higher plants. As very little is known about Protozoa, we searched for the presence of selenoproteins in the primitive dinoflagellate Oxyrrhis marina, belonging to the Protoctista kingdom. Four selenoproteins could be obtained from O. marina ce...
متن کاملThere are high levels of functional and genetic diversity in Oxyrrhis marina.
Oxyrrhis marina, a widely distributed marine protist, is used to model heterotrophic flagellate responses in microbial food webs. Although clonal variability occurs in protists, assessments of intraspecific diversity are rare; such assessments are critical, particularly where species are used as models in ecological studies. To address the extent of intraspecific variation within O. marina, we ...
متن کاملOn the allelochemical potency of the marine dinoflagellate Alexandrium ostenfeldii against heterotrophic and autotrophic protists
Three strains of the marine dinoflagellate Alexandrium ostenfeldii of different geographic origin were tested for their short-term deleterious effects on a diversity of marine protists. All A. ostenfeldii strains were capable of eliciting an apparent allelochemical response, but the various protistan target species were differentially affected. Protists that were negatively affected by exposure...
متن کاملMultiple protein phylogenies show that Oxyrrhis marina and Perkinsus marinus are early branches of the dinoflagellate lineage.
Oxyrrhis marina and Perkinsus marinus are two alveolate species of key taxonomic position with respect to the divergence of apicomplexans and dinoflagellates. New sequences from Oxyrrhis, Perkinsus and a number of dinoflagellates were added to datasets of small-subunit (SSU) rRNA, actin, alpha-tubulin and beta-tubulin sequences, as well as to a combined dataset of all three protein-coding genes...
متن کامل