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Mycale Adhaerens
''Mycale adhaerens'', the purple scallop sponge, is a species of marine demosponge in the family Mycalidae. ''Mycale'' is a large genus and this species is placed in the subgenus ''Aegogropila'' making its full name, ''Mycale'' (''Aegogropila'') ''adhaerens''. It grows symbiotically on the valves of scallop shells and is native to the west coast of North America. Description ''Mycale adhaerens'' forms a thin encrusting layer on the valves of living scallop shells such as ''Chlamys hastata'' and ''Chlamys rubida''. It ranges in colour from yellowish-brown through purple to pink. The only other species of sponge growing on the Pacific Coast with which it might be confused is ''Myxilla incrustans''; that species is usually some shade of brown, has a finer, less fibrous structure and has larger oscula. Ecology The relationship between the sponge and the scallop on which it lives is mutualistic, each receiving benefits. The scallop is often preyed on by the starfish ''Evasterias tro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lawrence Lambe
Lawrence Morris Lambe (August 27, 1863 – March 12, 1919) was a Canadian geologist, palaeontologist, and ecologist from the Geological Survey of Canada (GSC). His published work, describing the diverse and plentiful dinosaur discoveries from the fossil beds in Alberta, did much to bring dinosaurs into the public eye and helped usher in the ''Golden Age of Dinosaurs'' in the province. During this period, between the 1880s and World War I, dinosaur hunters from all over the world converged on Alberta. ''Lambeosaurus'', a well-known hadrosaur, was named after him as a tribute, in 1923. In addition to paleontology, Lambe discovered a number of invertebrate species ranging from Canada to the Pacific Northwest. Lambe's contemporary discoveries were published in works such as ''Sponges From the Atlantic Coast of Canada'' and ''Catalogue of the recent marine sponges of Canada and Alaska''. Early life and education Lambe was born in Montreal on August 27, 1863. Lambe studied at the Royal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge Spicule
Spicules are structural elements found in most sponges. The meshing of many spicules serves as the sponge's skeleton and thus it provides structural support and potentially defense against predators. Sponge spicules are made of calcium carbonate or silica. Large spicules visible to the naked eye are referred to as megascleres, while smaller, microscopic ones are termed microscleres. The composition, size, and shape of spicules are major characters in sponge systematics and taxonomy. Overview Sponges are a species-rich clade of the earliest-diverging (most basal) animals. They are distributed globally, with diverse ecologies and functions, and a record spanning at least the entire Phanerozoic. Most sponges produce skeletons formed by spicules, structural elements that develop in a wide variety of sizes and three dimensional shapes. Among the four sub-clades of Porifera, three (Demospongiae, Hexactinellida, and Homoscleromorpha) produce skeletons of amorphous silica and on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poecilosclerida
Poecilosclerida is an order of the demosponge class. It is the most speciose demosponge order with over 2200 species (World Porifera Database). It contains about 25 recognised families. They are characterised by having chelae microscleres, that is, the minute spicules scattered through the tissues, usually in the 10-60 μm range, have a shovel-like structure on the end. Most of the families are viviparous with parenchymella larvae that are uniformly ciliated The cilium, plural cilia (), is a membrane-bound organelle found on most types of eukaryotic cell, and certain microorganisms known as ciliates. Cilia are absent in bacteria and archaea. The cilium has the shape of a slender threadlike projecti .... Families As of 2018, the following families are recognized: References {{demosponge-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacteria
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic relationsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudoalteromonas Spongiae
''Pseudoalteromonas spongiae'' is a marine bacterium isolated from the sponge ''Mycale adhaerens ''Mycale adhaerens'', the purple scallop sponge, is a species of marine demosponge in the family Mycalidae. ''Mycale'' is a large genus and this species is placed in the subgenus ''Aegogropila'' making its full name, ''Mycale'' (''Aegogropila'') ...'' in Hong Kong. References External linksType strain of ''Pseudoalteromonas spongiae'' at Bac''Dive'' - the Bacterial Diversity Metadatabase Alteromonadales Bacteria described in 2005 {{Alteromonadales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enteroctopus Dofleini
The giant Pacific octopus (''Enteroctopus dofleini''), also known as the North Pacific giant octopus, is a large marine cephalopod belonging to the genus '' Enteroctopus''. Its spatial distribution includes the coastal North Pacific, along Mexico (Baja California), The United States (California, Oregon, Washington, and Alaska), Canada (British Columbia), Russia, Eastern China, Japan, and the Korean Peninsula. It can be found from the intertidal zone down to , and is best adapted to cold, oxygen-rich water. It is the largest octopus species, based on a scientific record of a individual weighed live. Etymology The specific name ''dofleini'' was chosen by Gerhard Wülker in honor of German scientist Franz Theodor Doflein. It was moved to genus '' Enteroctopus'' by Eric Hochberg in 1998. Description Size ''E. dofleini'' is distinguished from other species by its large size. Adults usually weigh around , with an arm span up to . [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peltodoris Nobilis
''Peltodoris nobilis'', common name, commonly called the sea lemon, false sea lemon, or the noble dorid, is a species of colorful sea slug, a dorid nudibranch, a shell-less marine (ocean), marine gastropod mollusk in the family Discodorididae.Gofas, S.; Rosenberg, G. (2015). ''Peltodoris nobilis'' (MacFarland, 1905). In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=594422 on 2016-12-14 This species was previously placed in the genus ''Anisodoris'' and was known for a long time as ''Anisodoris nobilis''. Subsequently it was known as ''Diaulula nobilis''. This animal gives off a pleasant citrus smell when it is handled, and this (along with its yellow coloration) is what is responsible for the common name "sea lemon". Its diet includes Mycale adhaerens, the purple scallop sponge Distribution This species occurs in the Eastern Pacific Ocean from Alaska to Baja California. It eats sponges. Descrip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doris Odhneri
''Doris odhneri'' is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Dorididae.Behrens D. W. (2004). "Pacific Coast Nudibranchs, Supplement 2. New species to the Pacific Coast and new information on the oldies". ''Proceedings of the California Academy of Sciences'' 55: 11-54. It is known by many common names, such as: giant white nudibranch, giant white dorid, and white-knight nudibranch. It is also often referred to as Odhner's dorid to honor Nils Hjalmar Odhner, the scientist it is named after.Behrens D. W. (1991). ''Pacific Coast Nudibranchs''. Description ''Doris odhneri'' is the largest nudibranch on the California coast, measuring up to 20 cm. It is completely white in color with no markings, however anomalies with a yellowish hue have been described in the Puget Sound region. A conspicuous characteristic of this nudibranch is its gill. It is composed of seven fluffy plumes and its rhinophores have 20 to 24 lamellae. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nudibranch
Nudibranchs () are a group of soft-bodied marine gastropod molluscs which shed their shells after their larval stage. They are noted for their often extraordinary colours and striking forms, and they have been given colourful nicknames to match, such as "clown", "marigold", "splendid", "dancer", "dragon", or "sea rabbit". Currently, about 3,000 valid species of nudibranchs are known.Ocean Portal (2017)A Collage of Nudibranch Colors Smithsonian National Museum of Natural History. Retrieved 17 April 2018. The word "nudibranch" comes from the Latin "naked" and the Ancient Greek () "gills". Nudibranchs are often casually called sea slugs, as they are a family of opistobranchs (sea slugs), within the phylum Mollusca (molluscs), but many sea slugs belong to several taxonomic groups which are not closely related to nudibranchs. A number of these other sea slugs, such as the photosynthetic ''Sacoglossa'' and the colourful Aglajidae, are often confused with nudibranchs. Distribut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tube Feet
Tube feet (technically podia) are small active tubular projections on the oral face of an echinoderm, whether the arms of a starfish, or the undersides of sea urchins, sand dollars and sea cucumbers; they are more discreet though present on brittle stars, and have only a feeding function in feather stars. They are part of the water vascular system. Structure and function Tube feet function in locomotion, feeding, and respiration. The tube feet in a starfish are arranged in grooves along the arms. They operate through hydraulic pressure. They are used to pass food to the oral mouth at the center, and can attach to surfaces. A starfish that is inverted turns one arm over and attaches it to a solid surface, and levers itself the right way up. Tube feet allow these different types of animals to stick to the ocean floor and move slowly. Each tube foot consists of two parts: the ampulla and the podium. The ampulla is a water-filled sac contained in the body of the animal that contain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evasterias Troscheli
''Evasterias troschelii'' is a species of starfish in the family Asteriidae. Its common names include the mottled star, false ochre sea star and Troschel's true star. It is found in Kamchatka and the north western coast of North America. Taxonomy The description of this species was first formally published in 1862 by William Stimpson under the name ''Asterias troschelii'' (Stimpson first presented the new species in a lecture at the Boston Society of Natural History in 1861). The holotype was collected in Puget sound, Washington. Only part of one arm still remains of this smallish specimen at the United States National Museum. It was moved to the new genus '' Evasterias'' by Addison Emery Verrill in 1914, with as the type species. Verrill published five new varieties (''alveolata'', ''densa'', ''parvispina'', ''rudis'' and ''subnodosa'') besides the nominate variety, and also published ''E. acanthostoma'' in 1914. Alexander Michailovitsch Djakonov synonymised all of Verrill's v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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