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Myxine Limosa
''Myxine limosa'', or Girard's Atlantic hagfish, is a jawless fish in the genus ''Myxine''. Description The eellike species grows up to long. The color ranges from reddish brown to dark purple. There are no visible eyes. The mouth is surrounded by 6 barbels, and there are 5 or 6 gill pouches on either side, with one exterior connection. Similar species ''Myxine glutinosa'' is grayish pink and grows up to long. North American ''Eptatretus'' hagfishes have 5–14 gill pouches, which open independently to the exterior. ''Petromyzon marinus'' has 7 pairs of gill pouches, one top nostril, and small visible eyes. Taxonomy The species was described by Charles Frédéric Girard, a French zoologist, in 1859. Distribution and habitat It occurs in the Western Atlantic Ocean, from Baffin Island, Canada, south to North Carolina North Carolina () is a state in the Southeastern region of the United States. The state is the 28th largest and 9th-most populous of the United S ...
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Myxine
''Myxine'' is a genus of hagfish, from the Greek μυξῖνος (''myxinos'', "slimy"). In 2021, three new species of ''Myxine'' were described from the Galápagos including '' M. phantasma'', the only species of ''Myxine'' to not have melanin-based pigments. Species * ''Myxine affinis'' Günther, 1870 (Patagonian hagfish) * '' Myxine australis'' Jenyns, 1842 (southern hagfish) * ''Myxine capensis'' Regan, 1913 (Cape hagfish) * ''Myxine circifrons'' Garman, 1899 (whiteface hagfish) * ''Myxine debueni'' Wisner & C. B. McMillan, 1995 (Magellan hagfish) * ''Myxine fernholmi'' Wisner & C. B. McMillan, 1995 (Falkland Islands hagfish) * ''Myxine formosana'' H. K. Mok & C. H. Kuo, 2001 (Formosa hagfish) * ''Myxine garmani'' D. S. Jordan & Snyder, 1901 (Garman's hagfish) * ''Myxine glutinosa'' Linnaeus, 1758 (Atlantic hagfish) *''Myxine greggi'' * ''Myxine hubbsi'' Wisner & C. B. McMillan, 1995 (Hubbs' hagfish) * ''Myxine hubbsoides'' Wisner & C. B. McMillan, 1995 * '' Myx ...
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Gill
A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist. The microscopic structure of a gill presents a large surface area to the external environment. Branchia (pl. branchiae) is the zoologists' name for gills (from Ancient Greek ). With the exception of some aquatic insects, the filaments and lamellae (folds) contain blood or coelomic fluid, from which gases are exchanged through the thin walls. The blood carries oxygen to other parts of the body. Carbon dioxide passes from the blood through the thin gill tissue into the water. Gills or gill-like organs, located in different parts of the body, are found in various groups of aquatic animals, including mollusks, crustaceans, insects, fish, and amphibians. Semiterrestrial marine animals such as crabs and mudskippers have gill cham ...
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Myxine Glutinosa
''Myxine glutinosa'', known as the Atlantic hagfish in North America, and often simply as the hagfish in Europe, is a species of jawless fish of the genus ''Myxine''. Distribution The distribution of ''Myxine glutinosa'' in the eastern Atlantic Ocean extends from the western Mediterranean Sea and Portugal to the North Sea, Skagerrak, Kattegat and the Varanger Fjord. It is also found in the western Atlantic Ocean from Baffin Island, Canada south to North Carolina. A related species, the Gulf hagfish ('' Eptatretus springeri''), occurs in the Gulf of Mexico. Description The Atlantic hagfish may grow up to long, with no eyes and no jaws; its star-shaped mouth is surrounded by 6 barbels. There is a single gill slit on each side of the eel-like body. It has a total of 88–102 pores from which it can exude a slimy mucus Mucus ( ) is a slippery aqueous secretion produced by, and covering, mucous membranes. It is typically produced from cells found in mucous glands, although it ma ...
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Eptatretus
''Eptatretus'' is a large genus of hagfish. Species There are currently 49 recognized species in this genus: * ''Eptatretus aceroi'' Polanco Fernández & Fernholm, 2014 (Acero's hagfish)Polanco Fernandez, A. & Fernholm, B. (2014): A New Species of Hagfish (Myxinidae: ''Eptatretus'') from the Colombian Caribbean. ''Copeia, 2014 (3): 530–533.'' * ''Eptatretus alastairi'' Mincarone & Fernholm, 2010 (Alastair's hagfish) * ''Eptatretus ancon'' H. K. Mok, Saavedra-Diaz & Acero P, 2001 * ''Eptatretus astrolabium'' Fernholm & Mincarone, 2010 (Astrolabe hagfish) * ''Eptatretus atami'' Dean, 1904 (Brown hagfish) * '' Eptatretus bischoffii'' A. F. Schneider, 1880 (Bischoff's hagfish) * ''Eptatretus bobwisneri'' Fernholm, Norén, S. O. Kullander, Quattrini, Zintzen, C. D. Roberts, H. K. Mok & C. H. Kuo, 2013 (Bob Wisner's hagfish)Fernholm, B., Norén, M., Kullander, S.O., Quattrini, A.M., Zintzen, V., Roberts, C.D., Mok, H.-K. & Kuo, C.-H. (2013): Hagfish phylogeny and tax ...
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Petromyzon Marinus
The sea lamprey (''Petromyzon marinus'') is a parasitic lamprey native to the Northern Hemisphere. It is sometimes referred to as the "vampire fish". Description The sea lamprey has an eel-like body without paired fins. Its mouth is jawless, round and sucker-like, and as wide or wider than the head; sharp teeth are arranged in many concentric circular rows. There are seven branchial or gill-like openings behind the eye. Sea lampreys are olive or brown-yellow on the dorsal and lateral part of the body, with some black marblings, with lighter coloration on the belly. Adults can reach a length of up to and a body weight up to . Etymology The etymology of the genus name ''Petromyzon'' is from '' petro-'' "stone" and '' myzon'' "sucking"; ''marinus'' is Latin for "of the sea". Distribution and habitat The species is found in the northern and western Atlantic Ocean along the shores of Europe and North America, in the western Mediterranean Sea, the Black Sea, and as an invasive spe ...
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Charles Frédéric Girard
Charles Frédéric Girard (8 March 1822 – 29 January 1895) was a French biologist specializing in ichthyology and herpetology. Born in Mulhouse, France, he studied at the College of Neuchâtel, Switzerland, as a student of Louis Agassiz. In 1847, he accompanied Agassiz as his assistant to Harvard University. Three years later, Spencer Fullerton Baird called him to the Smithsonian Institution to work on its growing collection of North American reptiles, amphibians and fishes. He worked at the museum for the next ten years and published numerous papers, many in collaboration with Baird. In 1854, he was naturalized as a U.S. citizen. Besides his work at the Smithsonian, he managed to earn an M.D. from Georgetown University in Washington, D.C. in 1856. In 1859 he returned to France and was awarded the Cuvier Prize by the Institute of France for his work on the North American reptiles and fishes two years later. When the American Civil War broke out, he joined the Confederate ...
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Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe and Asia from the "New World" of the Americas in the European perception of the World. The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Europe and Africa to the east, and North and South America to the west. As one component of the interconnected World Ocean, it is connected in the north to the Arctic Ocean, to the Pacific Ocean in the southwest, the Indian Ocean in the southeast, and the Southern Ocean in the south (other definitions describe the Atlantic as extending southward to Antarctica). The Atlantic Ocean is divided in two parts, by the Equatorial Counter Current, with the North(ern) Atlantic Ocean and the South(ern) Atlantic Ocean split at about 8°N. Scientific explorations of the A ...
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Baffin Island
Baffin Island (formerly Baffin Land), in the Canadian territory of Nunavut, is the largest island in Canada and the fifth-largest island in the world. Its area is , slightly larger than Spain; its population was 13,039 as of the 2021 Canadian census; and it is located at . It also contains the city of Iqaluit, the capital of Nunavut. Name The Inuktitut name for the island is , which means "very big island" ( "island" + "very big") and in Inuktitut syllabics is written as . This name is used for the administrative region the island is part of ( Qikiqtaaluk Region), as well as in multiple places in Nunavut and the Northwest Territories, such as some smaller islands: Qikiqtaaluk in Baffin Bay and Qikiqtaaluk in Foxe Basin. Norse explorers referred to it as ("stone land"). In 1576, English seaman Martin Frobisher made landfall on the island, naming it "Queen Elizabeth's Foreland" and Frobisher Bay is named after him. The island is named after English explorer William Baff ...
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North Carolina
North Carolina () is a state in the Southeastern region of the United States. The state is the 28th largest and 9th-most populous of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, Georgia and South Carolina to the south, and Tennessee to the west. In the 2020 census, the state had a population of 10,439,388. Raleigh is the state's capital and Charlotte is its largest city. The Charlotte metropolitan area, with a population of 2,595,027 in 2020, is the most-populous metropolitan area in North Carolina, the 21st-most populous in the United States, and the largest banking center in the nation after New York City. The Raleigh-Durham-Cary combined statistical area is the second-largest metropolitan area in the state and 32nd-most populous in the United States, with a population of 2,043,867 in 2020, and is home to the largest research park in the United States, Research Triangle Park. The earliest evidence of human occupation i ...
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