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Related to Haptophytes: Cryptophytes, Alveolates


Any of various photosynthetic, unicellular marine algae of the division Haptophyta or Prymnesiophyta, possessing two flagella and often bearing external calcified scales that fossilize as coccoliths. Haptophytes are abundant in the world's oceans and are thought to play an important role in global carbon and sulfur cycles.

[From New Latin Haptophyta, division name : Greek haptein, to grasp, touch (from the threadlike structure characteristic of the haptophytes, used to capture food and as a sensory organ ) + Greek phyton, plant; see -phyte.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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On continental shelves, the contribution of nanoplanktonic haptophytes is also important (Simon et al., 2009).
Adults of both species were fed a mixture of the following unicellular algae (with Culture Collection of Marine Phytoplankton numbers): the haptophytes Isochysis lutea (CCMP 463), Isochrysis sp.
At this point we have documented the presence of 35 genera of haptophytes, 55 genera of diatoms and 6 genera of dinoflagellates.
Haptophytes of the Nervion River estuary, northern Spain.
Among the small algae (d < 40 gm) chlorophytes prevailed followed by cryptophytes and discoid diatoms (genera Cyclotella, Stephanodiscus, Cyclostephanos) and chrysophytes + haptophytes. A significant increase in the biomass of this group occurred in 1999 and 2004 (Fig.
In freshwaters, these blooms include toxic and noxious cyanobacteria while in estuaries, harmful haptophytes and toxic dinoflagellates arise.
Rather than referring to a specific taxonomic group, this catch-all collective name is used here to include, in addition to some less important groups, the groups of haptophytes (including coccolithophorids, diatoms, and silicoflagellates) that will have to be reclassified when they are better known and a consensus has been reached on the affinities of these diverse flagellates, now more widely studied thanks to electron micros-copy ***.
454 pyrosequencing to describe microbial eukaryotic community composition, diversity and relative abundance: a test for marine haptophytes. PLoS One 8: e74371.
Among the most frequent organisms belonging to other groups are the chrysophyte Distephanus [= Dictyocha] speculum and haptophytes of the genus Phaeocystis.
In deeper euphotic zone communities, where photosynthetic cells dominated, dot-blot, clone library, and molecular characterization of cells sorted by flow cytometry found that phylogenetic groups that are usually mixotrophic, such as Haptophytes (Prymnesiophytes) or dinoflagellates, or that might contain mixotrophs (such as the Chrysophyceae among photosynthetic Heterokonts/Stramenopiles) were important or dominant among chlorophyll-containing cells (Lepere et al., 2009; Shi et al., 2009, 2011).