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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] |
Ostreopsis Fattorussoi
''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] |
Ostreopsis Siamensis
''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] |
Ostreopsis Ovata
''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] |
Ostreopsis Belizeana
''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] |
Ostreopsis Caribbeana
''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] |
Palytoxin
Palytoxin, PTX or PLTX is an intense vasoconstrictor, and is considered to be one of the most poisonous non-protein substances known, second only to maitotoxin in terms of toxicity in mice. Palytoxin is a polyhydroxylated and partially unsaturated compound (8 double bonds) with a long carbon chain. It has water-soluble and fat-soluble parts, 40 hydroxy groups and 64 chiral centers. Due to chirality and possible double bond ''cis-trans'' isomerism, it has over 1021 alternative stereoisomers. It is thermostable, and treatment with boiling water does not remove its toxicity. It remains stable in aqueous solutions for prolonged periods but rapidly decomposes and loses its toxicity in acidic or alkaline solutions. It has multiple analogues with a similar structure like ostreocin-D, mascarenotoxin-A and -B. Palytoxin occurs at least in tropics and subtropics where it is made by '' Palythoa'' corals and ''Ostreopsis'' dinoflagellates, or possibly by bacteria occurring in these orga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ostreopsis Lenticularis
Ostreopsis lenticularis is a species of dinoflagellate of the family Ostreopsidaceae described in 1981 by Yasuwo Fukuyo. Distribution This species is endemic to Tahiti Tahiti (; Tahitian ; ; previously also known as Otaheite) is the largest island of the Windward group of the Society Islands in French Polynesia. It is located in the central part of the Pacific Ocean and the nearest major landmass is Austr .... References * Fukuyo Y. 1981. Taxonomical study on benthic dinoflagellates collected in coral reefs. Bull. Jap. Soc. Sci. Fish. 47: 967-978 * Gómez, F. (2005). A list of free-living dinoflagellate species in the world's oceans. Acta Bot. Croat. 64(1): 129-212 * Streftaris, N.; Zenetos, A.; Papathanassiou, E. (2005). Globalisation in marine ecosystems: the story of non-indigenous marine species across European seas. Oceanogry and Marine Biology: an Annual Review. 43: 419-453 * Steidinger, K. A., M. A. Faust, and D. U. Hernández-Becerril. 2009. Dinoflagellates (Di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palythoa Toxica
''Palythoa toxica'', also referred to by its Hawaiian common name, limu-make-o-Hana ('seaweed of death from Hana'), is a species of zoanthid native to Hawaii. It is notable as the species in which palytoxin was discovered and from which it was first isolated.Clayden, J., Greeves, N. (2000), pages 19–21 Description ''P. toxica'' is an encrusting species with a firm, tough cuticle. The polyps are partially embedded in a cushiony mat of coenenchyme which grows across the rock surface, and which incorporates sand grains and fragments of debris. The oral disc of each polyp is broad and has a fringe of tentacles. The polyps can close up and be retracted into the coenenchyme, which then displays a pitted surface. The colour of this species is variable but is usually some shade of cream, grey or pale brown. History A Hawaiian legend relates how in a rock pool in the Hana district on the island of Maui there was to be found an alga known to the locals as "limu-make-o-Hana" ('seaweed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...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] |
Evechinus Chloroticus
Kina (''Evechinus chloroticus'') is a sea urchin endemic to New Zealand. This echinoderm belongs to the family Echinometridae and it can reach a maximum diameter of 16–17 cm. Kina have been a traditional component of Māori diet since pre-European times and has been fished commercially since 1986 in small quantities under the quota management system in restricted areas along the coast of New Zealand. Attempts to export ''E. chloroticus'' to Asian markets have been unsuccessful, so it may not be an economically attractive species for aquaculture development (James 2010). ''Evechinus chloroticus'' is distributed throughout New Zealand and in some northern and southern offshore islands. Habitat This sea urchin is found all around New Zealand in shallow waters around 12–14 metres deep, although there are also intertidal populations in the north of both the North and South Islands. ''Evechinus chloroticus'' prefers areas with moderate wave action. In the north of New Zeal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mediterranean Sea
The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the east by the Levant. The Sea has played a central role in the history of Western civilization. Geological evidence indicates that around 5.9 million years ago, the Mediterranean was cut off from the Atlantic and was partly or completely desiccated over a period of some 600,000 years during the Messinian salinity crisis before being refilled by the Zanclean flood about 5.3 million years ago. The Mediterranean Sea covers an area of about , representing 0.7% of the global ocean surface, but its connection to the Atlantic via the Strait of Gibraltar—the narrow strait that connects the Atlantic Ocean to the Mediterranean Sea and separates the Iberian Peninsula in Europe from Morocco in Africa—is only wide. The Mediterranean Sea e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
