|
Teuthowenia Megalops
''Teuthowenia megalops'', sometimes known as the Atlantic cranch squid, is a species of glass squid from the subarctic and temperate waters of the northern Atlantic Ocean. They are moderately sized squid with a maximum mantle length of . Their very large cephalopod eye, eyes are the source for the Specific name (zoology), specific name ''megalops'' (Greek for "large eyes"). Like other members of the genus ''Teuthowenia'', they are easily recognizable by the presence of three bioluminescent organs (photophores) on their eyeballs. Description ''Teuthowenia megalops'' are moderately sized glass squid. They are sexually dimorphic, reaching mantle lengths between for females, and for males. They have very large forward-facing cephalopod eye, eyes, each possessing three bioluminescent organs (photophores), a defining characteristic of the genus ''Teuthowenia''. One of the photophores is oval-shaped and small, located at the upper part near the lens of each eye. The other two are conc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teuthowenia Megalops (Michael Vecchione, NOAA)
''Teuthowenia megalops'', sometimes known as the Atlantic cranch squid, is a species of glass squid from the subarctic and temperate waters of the northern Atlantic Ocean. They are moderately sized squid with a maximum mantle length of . Their very large eyes are the source for the specific name ''megalops'' (Greek for "large eyes"). Like other members of the genus ''Teuthowenia'', they are easily recognizable by the presence of three bioluminescent organs ( photophores) on their eyeballs. Description ''Teuthowenia megalops'' are moderately sized glass squid. They are sexually dimorphic, reaching mantle lengths between for females, and for males. They have very large forward-facing eyes, each possessing three bioluminescent organs ( photophores), a defining characteristic of the genus ''Teuthowenia''. One of the photophores is oval-shaped and small, located at the upper part near the lens of each eye. The other two are concentric and located at the sides and bottom of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferdinand Victor Alphons Prosch
Ferdinand Victor Alphons Prosch (November 25, 1820 in Copenhagen – July 29, 1885) was a Danish doctor, veterinarian and biologist. Prosch's father, Johannes Henrik William Prosch (died 1843) was a secretary in the Danish War Chancery and his mother, Caroline Sophie (née Brement) was French. In 1837 Prosch was a student at the Metropolitan School in Copenhagen and by 1843 he had taken his medical exams. Between 1843 and 1846 Prosch was employed by the University as a prosector, i.e. a preparer of specimens for dissection in the University's Zoological museum. In 1847 he joined the ''Flaaden'' as the ship's doctor on a voyage to Madeira. Guinea, Venezuela and the Caribbean. In 1848 he was the ship's doctor on the frigate ''Havfrue'' ("Mermaid") in the First Schleswig War. After the war practiced as a doctor in Copenhagen and was a teacher of natural history, in which capacity he published the book "Lærer i Naturhistorie, i hvilken Egenskabin" 1851, which at the time was widely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teuthowenia Megalops Anatomy 2
''Teuthowenia'' is a genus of glass squid in the subfamily Taoniinae. Members of this genus are characterized by their deep-sea habitat, clear bodies, and ability to engorge themselves with water to become larger when threatened. Each known species has a visible digestive gland, which serves a similar purpose as a stomach and liver. The genus contains bioluminescent species. It includes three species: *''Teuthowenia maculata'' (Leach, 1817) - found in the tropical waters of the eastern Atlantic Ocean. *''Teuthowenia megalops'' (Prosch, 1849) - found in the subarctic, temperate, and (rarely) subtropical waters of the northern Atlantic Ocean. *''Teuthowenia pellucida ''Teuthowenia pellucida'', the googly-eyed glass squid, is a rare deep-sea glass squid whose habitat ranges throughout the oceans of the southern hemisphere. Characteristics The googly-eyed glass squid is a blue, transparent organism with a ...'' (Chun, 1910) - found throughout the oceans of the south ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bermuda
) , anthem = " God Save the King" , song_type = National song , song = "Hail to Bermuda" , image_map = , map_caption = , image_map2 = , mapsize2 = , map_caption2 = , subdivision_type = Sovereign state , subdivision_name = , established_title2 = English settlement , established_date2 = 1609 (officially becoming part of the Colony of Virginia in 1612) , official_languages = English , demonym = Bermudian , capital = Hamilton , coordinates = , largest_city = Hamilton , ethnic_groups = , ethnic_groups_year = 2016 , government_type = Parliamentary dependency under a constitutional monarchy , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 = Rena Lalgie , leader_title3 = Premier , leader_name3 = Edward David Burt , legislature = Parliament , upper_house = Senate , lower_house = House of Assembly , area_km2 = 53.2 , area_sq_mi = 20.54 , area_rank = , percent_water = 27 , elevation_max ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five major unincorporated territories, nine United States Minor Outlying Islands, Minor Outlying Islands, and 326 Indian reservations. The United States is also in Compact of Free Association, free association with three Oceania, Pacific Island Sovereign state, sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Palau, Republic of Palau. It is the world's List of countries and dependencies by area, third-largest country by both land and total area. It shares land borders Canada–United States border, with Canada to its north and Mexico–United States border, with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georgia (U
Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the country in the Caucasus ** Kingdom of Georgia, a medieval kingdom ** Georgia within the Russian Empire ** Democratic Republic of Georgia, established following the Russian Revolution ** Georgian Soviet Socialist Republic, a constituent of the Soviet Union * Related to the US state ** Province of Georgia, one of the thirteen American colonies established by Great Britain in what became the United States ** Georgia in the American Civil War, the State of Georgia within the Confederate States of America. Other places * 359 Georgia, an asteroid * New Georgia, Solomon Islands * South Georgia and the South Sandwich Islands Canada * Georgia Street, in Vancouver, British Columbia, Canada * Strait of Georgia, British Columbia, Canada ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by total area. Its southern and western border with the United States, stretching , is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Labrador
, nickname = "The Big Land" , etymology = , subdivision_type = Country , subdivision_name = Canada , subdivision_type1 = Province , subdivision_name1 = Newfoundland and Labrador , subdivision_type2 = , subdivision_name2 = , subdivision_type3 = , subdivision_name3 = , subdivision_type4 = , subdivision_name4 = , image_map = File:Labrador-Region.PNG , map_caption = Labrador (red) within Canada , pushpin_map = , pushpin_relief = , pushpin_map_caption = , coordinates = , coordinates_footnotes = , established_title = Founded , established_date = 1763 , area_footnotes = , area_total_km2 = ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paralarva
Paralarvae (singular: ''paralarva'') are young cephalopods in the planktonic stages between hatchling and subadult. This stage differs from the larval stage of animals that undergo true metamorphosis. Paralarvae have been observed only in members of the orders Octopoda and Teuthida. The term was first introduced by Richard E. Young and Robert F. Harman in 1988. Paralarvae usually spend an uncertain amount of time in the plankton and then typically descend to an adult habitat in the mesopelagic or bathypelagic zone. Their population abundance is dependent on the variation of mortality rates during the planktonic period. See also *Larva *Crustacean larvae Crustaceans may pass through a number of larval and immature stages between hatching from their eggs and reaching their adult form. Each of the stages is separated by a moult, in which the hard exoskeleton is shed to allow the animal to grow. The ... References Further reading *Bigelow, Keith A. "Age and growth in p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diel Vertical Migration
Diel vertical migration (DVM), also known as diurnal vertical migration, is a pattern of movement used by some organisms, such as copepods, living in the ocean and in lakes. The word ''diel'' comes from the Latin ''dies'' day, and means a 24-hour period. The migration occurs when organisms move up to the uppermost layer of the sea at night and return to the bottom of the daylight zone of the oceans or to the dense, bottom layer of lakes during the day. It is important to the functioning of deep-sea food webs and the biologically driven sequestration of carbon. In terms of biomass, it is the largest synchronous migration in the world. It is not restricted to any one taxon as examples are known from crustaceans (copepods), molluscs ( squid), and ray-finned fishes (trout). The phenomenon may be advantageous for a number of reasons, most typically to access food and avoid predators. It is triggered by various stimuli, the most prominent being response to changes in ligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Column
A water column is a conceptual column of water from the surface of a sea, river or lake to the bottom sediment.Munson, B.H., Axler, R., Hagley C., Host G., Merrick G., Richards C. (2004).Glossary. ''Water on the Web''. University of Minnesota-Duluth. Retrieved 27 May 2014. Descriptively, the deep sea water column is divided into five parts—''pelagic zones'' (from Greek πέλαγος (pélagos), 'open sea')—from the surface to below the floor, as follows: '' epipelagic'', from the surface to 200 meters below the surface; '' mesopelagic'', from 200 to 1000 meters below the surface; ''bathypelagic'', from 1000 to 4000 meters below the surface; '' abyssopelagic'', from 4000 meters below the surface to the level sea floor; '' hadopelagic'', depressions and crevices below the level sea floor. The concept of water column is useful since many aquatic phenomena are explained by the incomplete vertical mixing of waters with discrete chemical, physical or biological characteristics. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelagic
The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth (as illustrated on the right). The word ''pelagic'' is derived . The pelagic zone can be thought of as an imaginary cylinder or water column between the surface of the sea and the bottom. Conditions in the water column change with depth: pressure increases; temperature and light decrease; salinity, oxygen, micronutrients (such as iron, magnesium and calcium) all change. Marine life is affected by bathymetry (underwater topography) such as the seafloor, shoreline, or a submarine seamount, as well as by proximity to the boundary between the ocean and the atmosphere at the ocean surface, which brings light for photosynthesis, predation from above, and wind stirring up waves and setting currents in motion. The pelagic zone refers to the open, free waters away from the shore, where marine life can swim freely in any direction unhindered by topographical constraints. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
