|
Heteropsammia Eupsammides
''Heteropsammia'' is a genus of apozooxanthellate corals that belong to the family Dendrophylliidae. Anatomy These corals consist of free-living, single polyps, of a diameter of around 2.5 cm. They form a symbiotic relationship with a sipunculid worm, '' Aspidosiphon corallicola''. The worm lives in a cavity situated on the under surface of the coral and it pulls the polip over sandy substrates. They also present a facultative symbiotic relationship with zooxanthellae of the ''Symbiodinium'' genus, as this link has been observed at shallow waters (under 40 m), but not at greater depths (where the corals live without the algae). ''Heteropsammia'' corals can sometimes establish symbiotic relationships with other marine species, such as hermit crabs, that live in the cavity where the endosymbiotic Sipunculid worm is usually located. Nutrition ''Heteropsammia'' corals (of the species '' Heteropsammia cochlea'') have been observed ingesting salps in Leuk Bay, Koh Tao, Gulf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heteropsammia Cochlea
''Heteropsammia cochlea'', also known as walking dendro, is a species of small solitary coral in the family Dendrophylliidae that is native to the Indo-Pacific area. Description This small solitary free-living coral, not more than 2.5 cm across, is not fixed to the sea floor. It is composed of one or two corallites in the shape of a figure of eight when observed from top, making it easy to identify. The base in contact with the bottom is relatively circular, depending on the nature of the substrate it is either flat or slightly keeled. The base has an orifice that houses a commensal worm belonging to the family Aspidosiphonidae.LEON Virginie, PROUZET Anne, SCAPS Patrick, MITEL Cédric, in : DORIS, 21/3/2014 : Aspidosiphon muelleri Diesing, 1851, http://doris.ffessm.fr/fiche2.asp?fiche_numero=589 The overall color is yellowish, grayish or greenish. The polyp tentacles can be seen deployed, especially at night. Distribution & habitat The walking dendro is widespread throughout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salp
A salp (plural salps, also known colloquially as “sea grape”) or salpa (plural salpae or salpas) is a barrel-shaped, planktic tunicate. It moves by contracting, thereby pumping water through its gelatinous body, one of the most efficient examples of jet propulsion in the animal kingdom. The salp strains the pumped water through its internal feeding filters, feeding on phytoplankton. Distribution Salps are common in equatorial, temperate, and cold seas, where they can be seen at the surface, singly or in long, stringy colonies. The most abundant concentrations of salps are in the Southern Ocean (near Antarctica), where they sometimes form enormous swarms, often in deep water, and are sometimes even more abundant than krill. Since 1910, while krill populations in the Southern Ocean have declined, salp populations appear to be increasing. Salps have been seen in increasing numbers along the coast of Washington. Life cycle Salps have a complex life cycle, with an obligatory ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cnidarians Of The Indian Ocean
Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick. Cnidarians mostly have two basic body forms: swimming medusae and sessile polyps, both of which are radially symmetrical with mouths surrounded by tentacles that bear cnidocytes. Both forms have a single orifice and body cavity that are used for digestion and respiration. Many cnidarian species produce colonies that are single organisms composed of medusa-like or polyp-like zooids, or both (hence they are trimorphic). Cnidarians' activities are coordinated by a decentralized nerve net and simple receptors. Several free-swimming species of Cubozoa and Scypho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heteropsammia Moretonensis
''Heteropsammia'' is a genus of apozooxanthellate corals that belong to the family Dendrophylliidae. Anatomy These corals consist of free-living, single polyps, of a diameter of around 2.5 cm. They form a symbiotic relationship with a sipunculid worm, '' Aspidosiphon corallicola''. The worm lives in a cavity situated on the under surface of the coral and it pulls the polip over sandy substrates. They also present a facultative symbiotic relationship with zooxanthellae of the ''Symbiodinium'' genus, as this link has been observed at shallow waters (under 40 m), but not at greater depths (where the corals live without the algae). ''Heteropsammia'' corals can sometimes establish symbiotic relationships with other marine species, such as hermit crabs, that live in the cavity where the endosymbiotic Sipunculid worm is usually located. Nutrition ''Heteropsammia'' corals (of the species '' Heteropsammia cochlea'') have been observed ingesting salps in Leuk Bay, Koh Tao, Gulf ... [...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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), 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 reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), 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 binomial nomenclature, 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 specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gulf Of Thailand
The Gulf of Thailand, also known as the Gulf of Siam, is a shallow inlet in the southwestern South China Sea, bounded between the southwestern shores of the Indochinese Peninsula and the northern half of the Malay Peninsula. It is around in length and up to in width, and has a surface area of . The gulf is surrounded on the north, west and southwest by the coastlines of Thailand (hence the name), on the northeast by Cambodia and the Mekong Delta region of Vietnam, and opens to the South China Sea in the southeast. Names The modern Thai name of the gulf is ''Ao Thai'' ( th, อ่าวไทย, , 'Thai Gulf') and "Gulf of Thailand" has been adopted as the official name of the body by the International Hydrographic Organization. Its name in Malay is he "Gulf of Siam", ''Teluk Siam'', and in km, ឈូងសមុទ្រសៀម'', Chhoung Samut Siem''. In Thai, the gulf is historically known as ''Ao Sayam'' ( th, อ่าวสยาม). In Vietnamese it is know ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Koh Tao
Ko Tao ( th, เกาะเต่า, , ) is an island in Thailand and is part of the Chumphon Archipelago on the western shore of the Gulf of Thailand. It covers an area of about 21 km2 (8 sq mi). Administratively it is a subdistrict (''tambon'') of Ko Pha-ngan District (''amphoe'') of Surat Thani Province. , its official population was 1,382. The main settlement is Ban Mae Haad. The economy of the island is almost exclusively centered on tourism, especially scuba diving. Scuba diving is extremely popular in Ko Tao due to clear visibility, inexpensive pricing and the range of sealife to be seen. History Before being settled the island would be occasionally visited by fishermen from neighbouring islands looking for shelter in a storm or just resting before continuing on their journeys. It would appear from old maps and descriptions that this island was known by European cartographers and mariners as "Pulo Bardia", indicating that it was first settled by Malayo-Polynesi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuk Bay
Leuk (french: Loèche-Ville) is a municipality in the district of Leuk in the canton of Valais in Switzerland. On 1 January 2013, the former municipality of Erschmatt merged into the municipality of Leuk.Nomenklaturen – Amtliches Gemeindeverzeichnis der Schweiz accessed 9 February 2013 Since it controls access to the Gemmi Pass, it had some importance from the time of Raetia. The [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diogenes Heteropsammicola
''Diogenes heteropsammicola'' is a species of hermit crab discovered during samplings between 2012 and 2016 in the shallow waters of the Japanese Amami Islands. This ''D. heteropsammicola'' is strongly associated with the walking corals. This hermit crab species is unique due to the discovery that they use living, growing coral as a shell. The live in the inside of the coral and vary from other types of hermits. Crustaceans of this type commonly replace their shell as the organism grows in size, but ''D. heteropsammicola'' are the first of their kind to use solitary corals as a shell form. ''Heteropsammia'' and ''Heterocyathus'' are the two solitary corals that this hermit species has been observed as occupying. These two coral species are also used as a home by symbiotic sipunculans of the genus ''Aspidosiphon'', which normally occupy the corals that the were previously occupied by crabs. The discoverers of this species are Momoko Igawa and Makoto Kato of Kyoto University , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henri Milne-Edwards
Henri Milne-Edwards (23 October 1800 – 29 July 1885) was an eminent French zoologist. Biography Henri Milne-Edwards was the 27th child of William Edwards, an English planter and colonel of the militia in Jamaica and Elisabeth Vaux, a Frenchwoman. Henri was born in Bruges, in present-day Belgium, where his parents had retired; Bruges was then a part of the newborn French Republic. His father had been jailed for several years for helping some Englishmen in their escape to their country. Henri spent most of his life in France. He was brought up in Paris by his older brother Guillaume Frederic Edwards (1777–1842), a distinguished physiologist and ethnologist. His father was released after the fall of Napoleon. The whole family then moved to Paris. At first he turned his attention to medicine, in which he graduated as an MD at Paris in 1823. His passion for natural history soon prevailed, and he gave himself up to the study of the lower forms of animal life. He became a stude ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Koh Tao")
