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dinoflagellates ecological role

Economic Importance. The life cycle of many dinoflagellates includes at least one nonflagellated benthic stage (cyst). Some din flagellates such as Gymnodinium and Gonyaulax […] The daughter cells will be genetically identical to that of the original cell. There are many different groups of phytoplankton species found in the world's oceans, but among the most common are diatoms and dinoflagellates. The most form of reproduction is asexual, where daughter cells form by simple mitosis and division of the cell. Usually considered algae, dinoflagellates are mostly marine plankton, but they also are common in freshwater habitats.Their populations are distributed depending on sea surface temperature, salinity, or depth. Dinoflagellates may produce their own light chemically. The ecological significance of dinoflagellates does not stop at primary production. The dinoflagellates (Greek δῖνος dinos "whirling" and Latin flagellum "whip, scourge") are single-celled eukaryotes constituting the phylum Dinoflagellata. This is because some species are capable of bioluminescence, in which chemicals made by the organism produce light in a chemical reaction.The dinoflagellates begin to glow as it gets dark, but will brighten considerably when agitated, such as in the wake of a ship. The Dinoflagellata are sometimes called Pyrrhophyta , meaning "fire plants". Diatoms and Dinoflagellates . In the literature, the different types of dinoflagellate cysts are mainly defined based on morphological (number and type of layers in the cell wall) and functional (long- or short-term endurance) differences. They fix CO2 by photosynthesis, provide carbohydrates to the coral, and help in the formation of the coral skeleton. Most of the species featured on this site belong to one of these two groups. Dinoflagellates usually reproduce asexually. Dinoflagellates (ecological role) Important planktivorous primary producers in tropical and subtropical zones. The thecal plates may either be divided, or completely shed and then reformed. Reproduction 4. Habitat and Habits of Dinoflagellates: (i) The din-flagellates are important component of phytoplankton. Dinoflagellates are crucial for the health of coral reefs. One group of dinoflagellates, zooxanthellae, live in close association with reef building corals. Habitat and Habits of Dinoflagellates 2. Heterotrophic dinoflagellates are prevalent protists in marine environments, which play an important role in the carbon cycling and energy flow in the marine planktonic community. Dinoflagellates exhibit a variety of feeding strategies, about half are autotrophic, since dinoflagellates have a slower generation time than diatoms they tend to follow diatom blooms. Structure of Dinoflagellates 3. 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