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Tridacna Elongatissima
''Tridacna'' is a genus of large saltwater clams, marine bivalve molluscs in the subfamily Tridacninae, the giant clams. They have heavy shells, fluted with 4 to 6 folds. The mantle is brightly coloured. They inhabit shallow waters of coral reefs in warm seas of the Indo-Pacific region.Huelsken, T., Keyse, J., Liggins, L., Penny, S., Treml, E.A., Riginos, C. (2013) A Novel Widespread Cryptic Species and Phylogeographic Patterns within Several Giant Clam Species (Cardiidae: Tridacna) from the Indo-Pacific Ocean. PLoS ONEDOI: 10.1371/journal.pone.0080858 These clams are popular in marine aquaria, and in some areas, such as the Philippines, members of the genus are farmed for the marine aquarium trade. They live in symbiosis with photosynthetic algae (zooxanthellae). Some species are eaten by humans. All species in the genus ''Tridacna'' are protected under CITES Appendix II. Systematics and phylogeny The genus contains the following species: * '' Tridacna crocea'' Lamarck, 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zooxanthella
Zooxanthellae is a colloquial term for single-celled dinoflagellates that are able to live in symbiosis with diverse marine invertebrates including demosponges, corals, jellyfish, and nudibranchs. Most known zooxanthellae are in the genus ''Symbiodinium'', but some are known from the genus ''Amphidinium'', and other taxa, as yet unidentified, may have similar endosymbiont affinities. The true ''Zooxanthella'' K.brandt is a mutualist of the radiolarian ''Collozoum inerme'' (Joh.Müll., 1856) and systematically placed in Peridiniales. Another group of unicellular eukaryotes that partake in similar endosymbiotic relationships in both marine and freshwater habitats are green algae zoochlorellae. Zooxanthellae are photosynthetic organisms, which contain chlorophyll a and chlorophyll c, as well as the dinoflagellate pigments peridinin and diadinoxanthin. These provide the yellowish and brownish colours typical of many of the host species. During the day, they provide their host with t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptic Species
In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each other, further blurring any distinctions. Terms that are sometimes used synonymously but have more precise meanings are cryptic species for two or more species hidden under one species name, sibling species for two (or more) species that are each other's closest relative, and species flock for a group of closely related species that live in the same habitat. As informal taxonomic ranks, species group, species aggregate, macrospecies, and superspecies are also in use. Two or more taxa that were once considered conspecific (of the same species) may later be subdivided into infraspecific taxa (taxa within a species, such as bacterial strains or plant varieties), that is complex but it is not a species complex. A species complex is in most cas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tridacna Costata
''Tridacna squamosina'' is a species of the ''Tridacna'' genus, the giant clams. These animals are bivalve mollusks belonging to the family Cardiidae identified by Sturany 1899. In 2008 Roa-Quiaoit, Kochzius, Jantzen, Zibdah & Richter identified what they believed was a new species of giant clam they called ''Tridacna costata'', however in 2011 Markus Huber and Anita Eschner examined a collection of Rudolf Sturanys specimens, held in the Natural History Museum, Vienna, that had remained not properly identified for over 100 years and discovered it was actually ''Tridacna squamosina''. The collection held seven syntypes were identified and ''Tridacna squamosina'' was accepted and ''Tridacna costata'' formally synonymized. Physical characteristics ''Tridacna squamosina'' has is a bivalve mollusk with an elongated. The shell has a few folds compared to other bivalve tridacnas, about 5–7 of the on each shell. The upper shell has somewhat large tooth-like formations projecting form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tridacna Squamosina
''Tridacna squamosina'' is a species of the ''Tridacna'' genus, the giant clams. These animals are bivalve mollusks belonging to the family Cardiidae identified by Sturany 1899. In 2008 Roa-Quiaoit, Kochzius, Jantzen, Zibdah & Richter identified what they believed was a new species of giant clam they called ''Tridacna costata'', however in 2011 Markus Huber and Anita Eschner examined a collection of Rudolf Sturanys specimens, held in the Natural History Museum, Vienna, that had remained not properly identified for over 100 years and discovered it was actually ''Tridacna squamosina''. The collection held seven syntypes were identified and ''Tridacna squamosina'' was accepted and ''Tridacna costata'' formally synonymized. Physical characteristics ''Tridacna squamosina'' has is a bivalve mollusk with an elongated. The shell has a few folds compared to other bivalve tridacnas, about 5–7 of the on each shell. The upper shell has somewhat large tooth-like formations projecting form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tridacna Squamosa
''Tridacna squamosa'', known commonly as the fluted giant clam and scaly clam, is a species of bivalve in the family Cardiidae. MolluscaBase eds. (2022). MolluscaBase. Tridacna squamosa Lamarck, 1819. Accessed through: World Register of Marine Species at: https://marinespecies.org/aphia.php?p=taxdetails&id=207674 on 2022-10-13 It is one of a number of large clam species native to the shallow coral reefs of the South Pacific and Indian Oceans. It is distinguished by the large, leaf-like fluted edges on its shell called 'scutes' and a byssal opening that is small compared to those of other members of the subfamily Tridacnindae. Normal coloration of the mantle ranges from browns and purples to greens and yellows arranged in elongated linear or spot-like patterns. ''Tridacna squamosa'' grows to across. Sessile in adulthood, the clam's mantle tissues act as a habitat for the symbiotic single-celled dinoflagellate algae (zooxanthellae) from which it gets a major portion of its nu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tridacna Rosewateri
''Tridacna rosewateri'' is a species of marine bivalve in the family Cardiidae. MolluscaBase eds. (2022). MolluscaBase. Tridacna rosewateri Sirenko & Scarlato, 1991. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=466760 on 2022-10-13 Distribution It is endemic to Mauritius Mauritius ( ; french: Maurice, link=no ; mfe, label=Mauritian Creole, Moris ), officially the Republic of Mauritius, is an island nation in the Indian Ocean about off the southeast coast of the African continent, east of Madagascar. It incl .... Locus typicus: "Saya de Malha Bank, Indian Ocean."Sirenho & Scarlato, 1991-''La Conchiglia, Year.XXII, No. 261, Oct-Dec.1991'', pages 4-9. References * Sirenko, B. I. & Scarlato, O. A. (1991). Tridacna rosewateri sp. n. Una nuova specie di Tridacna dall'Oceano Indiano. A new species of giant clam from Indian Ocean. La Conchiglia. 22 (261): 4-9 * Sirenko, B. I. & Scarlato, O. A. (1991). Tridacna r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tridacna Noae
''Tridacna noae'', also known as Noah’s giant clam or the Teardrop giant clam, is a species of giant clam. Up until recently, ''T. noae'' was confused with the small giant clam ''Tridacna maxima'', but is now known to be its own independent species. It has a broad distribution in the Indo-Pacific. As with all giant clams, populations of ''T. noae'', are declining due to human exploitation of flesh for consumption, shells, and as aquarium pets. ''T. noae'' and all members of ''Tridacninae'' are considered endangered, and have been since 1985. Taxonomy ''T. noae'' are marine bivalve molluscs in the subfamily ''Tridacninae'', also known as giant clams. ''T. noae'' was originally described and named by Röding (1798) based on figures in Chemnitz (1784). Description ''T. noae'' have a physical appearance typical to that of most bivalves, especially those in the ''Tridacninae'', or giant clam, subfamily. ''T. noae'' typically have a shell length between 6–20 cm, and shell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tridacna Mbalavuana
''Tridacna mbalavuana'', the tevoro clam, is a species of bivalve in the family Cardiidae. It is found in Fiji and Tonga. It is currently listed on the IUCN Red List of Threatened Species The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biologi .... References mbalavuana Molluscs of the Pacific Ocean Molluscs described in 1934 Taxonomy articles created by Polbot {{Bivalve-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tridacna Maxima
The maxima clam (''Tridacna maxima''), also known as the small giant clam, is a species of bivalve mollusc found throughout the Indo-Pacific region.MolluscaBase eds. (2022). MolluscaBase. Tridacna maxima (Röding, 1798). Accessed through: World Register of Marine Species at: https://marinespecies.org/aphia.php?p=taxdetails&id=207675 on 2022-10-13 They are much sought after in the aquarium trade, as their often striking coloration mimics that of the true giant clam; however, the ''maximas'' maintain a manageable size, with the shells of large specimens typically not exceeding in length. Description Bivalves have two valves on the mantle. These siphon water through the body to extract oxygen from the water using the gills and to feed on algae.Ellis, S. (1998) Spawning and early larval rearing of giant clams (Bivalvia: Tridacnidae). Center for Tropical and Subtropical Aquaculture, 130: 1–55. The ''maxima'' is less than one-third the size of the true giant clam (''Tridacna gi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tridacna Gigas
The giant clams are the members of the clam genus ''Tridacna'' that are the largest living bivalve mollusks. There are actually several species of "giant clams" in the genus ''Tridacna'', which are often misidentified for ''Tridacna gigas'', the most commonly intended species referred to as "the giant clam". ''Tridacna gigas'' is one of the most endangered clam species. Antonio Pigafetta documented these in his journal as early as 1521. One of a number of large clam species native to the shallow coral reefs of the South Pacific and Indian oceans, they can weigh more than , measure as much as across and have an average lifespan in the wild of over 100 years. They are also found off the shores of the Philippines and in the South China Sea in the coral reefs of Sabah (Malaysian Borneo). The giant clam lives in flat coral sand or broken coral and can be found at depths of as much as 20 m (66 ft). Knop, p. 10. Its range covers the Indo-Pacific, but populations are diminis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tridacna Elongatissima
''Tridacna'' is a genus of large saltwater clams, marine bivalve molluscs in the subfamily Tridacninae, the giant clams. They have heavy shells, fluted with 4 to 6 folds. The mantle is brightly coloured. They inhabit shallow waters of coral reefs in warm seas of the Indo-Pacific region.Huelsken, T., Keyse, J., Liggins, L., Penny, S., Treml, E.A., Riginos, C. (2013) A Novel Widespread Cryptic Species and Phylogeographic Patterns within Several Giant Clam Species (Cardiidae: Tridacna) from the Indo-Pacific Ocean. PLoS ONEDOI: 10.1371/journal.pone.0080858 These clams are popular in marine aquaria, and in some areas, such as the Philippines, members of the genus are farmed for the marine aquarium trade. They live in symbiosis with photosynthetic algae (zooxanthellae). Some species are eaten by humans. All species in the genus ''Tridacna'' are protected under CITES Appendix II. Systematics and phylogeny The genus contains the following species: * '' Tridacna crocea'' Lamarck, 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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