Dinoflagellate classification pdf995

Dinoflagellate populations vary according to temperature, salinity, depth, latitude and other habitat characteristics. In terms of number of species, dinoflagellates are one of the most extensive groups of marine eukaryotes, although it is considerably smaller than diatoms . The first dinoflagellate was described in 1753 by Henry Baker. filexlib. Structure of Dinoflagellates: ADVERTISEMENTS: (i) Din flagellates are basically unicellular motile and biflagellate, golden brown, photosynthetic protists. Predominant colour is golden brown but yellow, green, brown and even blue forms also occur due to change in proportion of various pigments. A few are no motile, no flagellate, amoeboid, and Dinoflagellates Classification Dinoflagellates were classified under kingdom Protista and phylum Dinoflagellata. Some scientists have kept dinoflagellates in the division Pyrrophycophyta (meaning- fire plants). Dinoflagellates are kept in the supergroup Chromalveolata, they seem to have originated from the secondary symbiosis of red algae.
Most dinoflagellates are marine planktons, but some are also found in freshwater. Their distribution depends on the pH level, temperature and depth of the aquatic ecosystem. Their flagella are responsible for locomotion and facilitate a spinning top-like motion. A large segment of dinoflagellates is bioluminescent and tend to emit blue-green light.
Dinoflagellates are a group of unicellular protists that can be identified using the light microscope, and are (usually) recognized by their golden-brown plastids, assimilative cell with indented waist, distinctive swimming pattern, and relatively large nucleus that contains visible chromosomes.
Dinoflagellate toxins and bioactives are of increasing interest because of their commercial impact, influence on safety of seafood, and potential medical and other applications. This review discusses biotechnological methods of identifying toxic dinoflagellates and detecting their toxins. Potential applications of the toxins are discussed.
There are around three thousand dinoflagellate species classified into several genera. The classification of this genus is much more perplexing. Dinoflagellates are eukaryotes. All through history, botanical and zoological classifications have been used. The evolution of dinoflagellates has been explored in detail recently.
Dinoflagellata have two forms: armored (with thecal plates) and naked. Some species are bioluminescent, meaning that they can produce their own light, similar to fireflies. During periods of environmental stress, dinoflagellates form cysts. The most common dinoflagellate fossils are those in cyst form. However, some of the species have cyst
The publication, Identifying Harmful Marine Dinoflagellates, is an effort by the authors to present a fully illustrated identification guide for harmful dinoflagellate taxa. The user will recognize general information on dinoflagellate morphology and other criteria used in species identification. Each taxon is presented with a species overview
dinoflagellate, (division Dinoflagellata), any of numerous one-celled aquatic organisms bearing two dissimilar flagella and having characteristics of both plants and animals. Most are marine, though some live in freshwater habitats.
Fensome et al. (1993) unified dinoflagellate classification. As in every other group, molecular data have given much insight onto the phylogenetic history of dinoflagellates. However, this has not (yet) been translated into official renaming of higher taxono