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Ebriid

 

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Ebriid



 
 
The Ebridea is a group of phagotrophic flagellate
Flagellate

Flagellates are cell s with one or more whip-like organelles called flagellum. Some cells in animals may be flagellate, for instance the spermatozoa of most phyla....
 protist
Protist

Protists ; eukaryote microorganisms. Historically, protists were treated as the kingdom Protista but this group is no longer recognized in modern taxonomy....
 present in marine coastal plankton communities worldwide. Ebria tripartita is one of two (possibly four) described extant species in the Ebridea.







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The Ebridea is a group of phagotrophic flagellate
Flagellate

Flagellates are cell s with one or more whip-like organelles called flagellum. Some cells in animals may be flagellate, for instance the spermatozoa of most phyla....
 protist
Protist

Protists ; eukaryote microorganisms. Historically, protists were treated as the kingdom Protista but this group is no longer recognized in modern taxonomy....
 present in marine coastal plankton communities worldwide. Ebria tripartita is one of two (possibly four) described extant species in the Ebridea.
Members of this group are named for their idiosyncratic method of movement (ebrius, "drunk").

Ebriids are usually encountered in low abundance and have a peculiar combination of ultrastructural characters including a large nucleus with permanently condensed chromosome
Chromosome

A chromosome is an organized structure of DNA and protein that is found in Cell . A chromosome is a single piece of DNA that contains many genes, regulatory sequence and other genetic sequence....
s and an internal skeleton composed of siliceous rods.

The taxonomic history of the group has been tumultuous and has included a variety of affiliations, such as silicoflagellate
Silicoflagellate

Silicoflagellates are a small group of unicellular heterokont algae, found in Marine environments. In one stage of their life cycle, they produce a siliceous skeleton, composed of a network of bars and spikes arranged to form an internal basket....
s, dinoflagellates, 'radiolarians' and 'neomonads'. Recently the Ebridea is treated as a eukaryotic taxon with an unclear phylogenetic position, but last molecular studies (Canadian Institute for Advanced Research) place of ebriids within the Cercozoa
Cercozoa

The Cercozoa are a group of protists, including most amoeboids and flagellates that feed by means of filose pseudopods. These may be restricted to part of the cell surface, but there is never a true cytostome or mouth as found in many other protozoa....
.