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Ostreopsidaceae
Ostreopsidaceae is a family of free-living dinoflagellates found in marine environments. Genera The World Register of Marine Species includes the following genera in the family : *''Alexandrium'' Halim *'' Centrodinium'' Kofoid *''Coolia'' Meunier *'' Fukuyoa'' Gomez, Qiu, Lopes & Lin *''Gambierdiscus ''Gambierdiscus'' is a genus of marine dinoflagellates that produce ciguatoxins, a type of toxin that causes the foodborne illness known as ciguatera. They are usually epiphytic on macroalgae growing on coral reefs. Morphology ''Gambierdiscus ...'' Adachi & Fukuyo *'' Ostreopsis'' J.Schmidt References Gonyaulacales Dinoflagellate families {{dinoflagellate-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coolia
''Coolia'' is a marine dinoflagellate genus in the family Ostreopsidaceae. It was first described by Meunier in 1919. There are currently seven identified species distributed globally in tropical and temperate coastal waters. ''Coolia'' is a benthic or epiphytic type dinoflagellate: it can be found adhered to sediment or other organisms but it is not limited to these substrates. It can also be found in a freely motile form in the water column. The life cycle of ''Coolia'' involves an asexual stage where the cell divides by binary fission and a sexual stage where cysts are produced. Some of the species, for example, ''Coolia tropicalis'' and ''Coolia malayensis'', produce toxins that can potentially cause shellfish poisoning in humans. Etymology The genus was named after a Pharmacist, M. Cool, from Nieupoort, Belgium, where the first species of the genus ''Coolia'', ''Coolia monotis'' was originally discovered in the oyster beds. Taxonomy ''Coolia'' was first described by Alphonse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dinoflagellate
The dinoflagellates (Greek δῖνος ''dinos'' "whirling" and Latin ''flagellum'' "whip, scourge") are a monophyletic group of single-celled eukaryotes constituting the phylum Dinoflagellata and are usually considered algae. Dinoflagellates are mostly marine plankton, but they also are common in freshwater habitats. Their populations vary with sea surface temperature, salinity, and depth. Many dinoflagellates are photosynthetic, but a large fraction of these are in fact mixotrophic, combining photosynthesis with ingestion of prey (phagotrophy and myzocytosis). In terms of number of species, dinoflagellates are one of the largest groups of marine eukaryotes, although substantially smaller than diatoms. Some species are endosymbionts of marine animals and play an important part in the biology of coral reefs. Other dinoflagellates are unpigmented predators on other protozoa, and a few forms are parasitic (for example, ''Oodinium'' and ''Pfiesteria''). Some dinoflagellates pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as the ''World List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexandrium (dinoflagellate)
''Alexandrium'' is a genus of dinoflagellates. It contains some of the dinoflagellate species most harmful to humans, because it produces toxic harmful algal blooms (HAB) that cause paralytic shellfish poisoning (PSP) in humans. There are about 30 species of ''Alexandrium'' that form a clade, defined primarily on morphological characters in their thecal plates. Introduction The group was not well-defined in the past and thus, due to interest of its toxic behaviour, people have revised the group through formal tabulation and usage of molecular markers such as the toxic gene, stx4A, to better understand not just the relationship between each species; but more importantly, to tell something about the spread and barriers to the bloom. Even if, much is known about the life cycles related to the blooms, much is still unknown as to how each life stage is triggered and transitions to the next stage. Predation and parasitism have proven to be great barriers for population growth. Lea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrodinium
''Centrodinium'' is genus of dinoflagellates in the order Gonyaulacales Gonyaulacales is an order of dinoflagellates found in marine environments. References Dinoflagellate orders {{dinoflagellate-stub .... Species * '' Centrodinium biconicum'' (Murray & Whitting) F.J.R.Taylor * '' Centrodinium complanatum'' (Cleve) Kofoid * '' Centrodinium deflexoides'' Balech * '' Centrodinium deflexum'' Kofoid * '' Centrodinium elongatum'' Kofoid * '' Centrodinium eminens'' Bohm * '' Centrodinium expansum'' Kofoid & Michener * '' Centrodinium intermedium'' Pavillard * '' Centrodinium maximum'' Pavillard * '' Centrodinium michaelsarsii'' (Gaarder) F.J.R.Taylor * '' Centrodinium mimeticum'' (Balech) F.J.R.Taylor * '' Centrodinium ovalis'' (Pavillard) Hernández-Becerril * '' Centrodinium pacificum'' (Rampi) F.J.R.Taylor * '' Centrodinium pavillardii'' F.J.R.Taylor * '' Centrodinium porulosum'' Kofoid & Michener * '' Centrodinium pulchrum'' Bohm * '' Centrodinium punctatum'' (Clev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gambierdiscus
''Gambierdiscus'' is a genus of marine dinoflagellates that produce ciguatoxins, a type of toxin that causes the foodborne illness known as ciguatera. They are usually epiphytic on macroalgae growing on coral reefs. Morphology ''Gambierdiscus'' cells generally have a lenticular shape with a depression on the ventral side of the cell, from where the two dissimilar flagella arise. ''Gambierdiscus'' cells have an orange to brown colour due to the assessory pigments peridinin, diadinoxanthin and dinoxanthin. Distribution The marine dinoflagellate genus ''Gambierdiscus'' occurs globally in tropic and subtropic regions. It mainly grows attached to macroalgae and coralline turfalgae. Thus, it does not form visible surface blooms like many other harmful dinoflagellate species (red tides). A decrease in coral reefs due to bleaching, pollution or overfishing usually facilitates the growth of macroalgae, which can cause spreading of this epiphytic dinoflagellate genus. Ciguatera Sev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ostreopsis
''Ostreopsis'' is a genus of free-living dinoflagellates found in marine environments. Some species are benthic; the planktonic species in the genus are known for the toxic algal blooms that they sometimes cause, threatening human and animal health. Taxonomy The taxonomy of this genus is problematic. When in 1901, Schmidt first created the genus ''Ostreopsis'', he described the type species '' O. siamensis'' from the phytoplankton in the waters of the Gulf of Thailand. However, there were anomalies in the original drawing made by Schmidt, and ''O. siamensis'' was redescribed by Fukuyo in 1981; at the same time, Fukuyo introduced two new species, '' O. lenticularis'' and '' O. ovata''. Distribution and habitat ''Ostreopsis'' spp. have been found in many marine locations around the world. Despite ''O. siamensis'' having been found in the plankton, other species are generally found in benthic habitats. They are most noticeable in temperate seas when they ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
