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Topics related to "hagfish"

hagfish
hagfish primitive marine fish of the order Cyclostomata, or jawless fishes (see cyclostome ), of worldwide distribution in cold and temperate waters. Its rudimentary skeleton, of cartilage rather than bone, has a braincase, but no jaw. The circular sucking mouth has rows of horny teeth. There is a... Read more
borer
borer name applied to various animals that are injurious because of their ability to penetrate plant or animal tissues. Among insects, some borers are beetles, e.g., the flatheaded apple-tree borer, a serious pest of many shade and fruit trees; the roundheaded apple-tree borer; and the bronze birch... Read more
lamprey
lamprey name for several primitive marine and freshwater fishes of the order Cyclostomata, or jawless fishes (see cyclostome ). As in the other member of the order, the hagfish , the adult lamprey retains the notochord , the supporting structure that in higher vertebrates is found only in the em... Read more
fish
fish limbless aquatic vertebrate animal with fins and internal gills. There are three living classes of fish: the primitive jawless fishes, or Agnatha; the cartilaginous (sharklike) fishes, or Chondrichthyes; and the bony fishes, or Osteichthyes. These groups, although quite different from one anot... Read more
fish
fish limbless aquatic vertebrate animal with fins and internal gills. There are three living classes of fish: the primitive jawless fishes, or Agnatha; the cartilaginous (sharklike) fishes, or Chondrichthyes; and the bony fishes, or Osteichthyes. These groups, although quite different from one anot... Read more
Chordata
Chordata , phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals. The three features uniqu... Read more

Encyclopedia entries related to "hagfish"

Hagfish
Encyclopedia entry from: The Gale Encyclopedia of Science Hagfish A primitive group of fish, hagfish (order Hyperotreti, family Myxinidae) resemble eels in their...1.5 feet (40 cm); females are often larger than males. Hagfish are bottom-dwelling fish of soft, muddy substrates, living...
hagfish
Book article from: The Columbia Encyclopedia, Sixth Edition hagfish primitive marine fish of the order Cyclostomata...the other jawless fishes, the lampreys , hagfish retain the notochord , a supporting structure...nervous system, a spleen, and scales. Hagfish, or hags, spend much time embedded in...
Lampreys and Hagfishes
Encyclopedia entry from: The Gale Encyclopedia of Science ...Academy of Sciences offered a prize for the first zoologist to describe the method by which hagfish eggs get fertilized. This prize has yet to be claimed! Hagfish feed largely on invertebrates, especially polychaete worms. They also feed on dead...
cyclostome
Book article from: The Columbia Encyclopedia, Sixth Edition ...member of the Cyclostomata, the only living order of the vertebrate class Agnatha (see Chordata ). This group includes the hagfish and the lamprey. The name also applies to members of the order Cyclostomata of the invertebrate phylum Ectoprocta , class...
fish
Book article from: The Oxford Companion to Ships and the Sea ...half the described species are marine, and approximately 75% of them live in shallow coastal waters. The types range from hagfish ( Myxine spp.) to lungfish (Dipnoi), but here the discussion will centre on the bony fishes, or teleosts, which are...
lamprey
Book article from: The Columbia Encyclopedia, Sixth Edition ...freshwater fishes of the order Cyclostomata, or jawless fishes (see cyclostome ). As in the other member of the order, the hagfish , the adult lamprey retains the notochord , the supporting structure that in higher vertebrates is found only in the embryo...
borer
Book article from: The Columbia Encyclopedia, Sixth Edition ...bivalve mollusks, e.g., the rock borer, the shipworm , and the piddock, which are thought to secrete acids that dissolve rock and other substances. The hagfish , or borer, is a marine pest that burrows into the bodies of other fish.
Heart
Encyclopedia entry from: The Gale Encyclopedia of Science ...chambers and in and out of the heart is controlled by valves that allow movement only in one direction. Lower vertebrates such as hagfish and other fish have two-chambered hearts. The ventricle pumps blood forward through the gills to obtain oxygen and dispose...
early vertebrates and fish
Book article from: The Oxford Companion to the Earth ...jawless vertebrates. They are represented now only by the lampreys, eel-like forms that are parasites on fish, and the hagfish, also eel-like but feeding on dead or dying animals. Ordovician vertebrates occur in the Harding Sandstone of North America...

Dictionary entries related to "hagfish"

hagfish
Book article from: A Dictionary of Zoology hagfish See MYXINIDAE .
Cyclostomata
Book article from: A Dictionary of Zoology ...extant orders usually included are the lampreys (Petromyzoniformes) and the hagfish (Myxiniformes) but there is now considerable doubt whether they are closely related to each other; the hagfish may be a sister group to other vertebrates.
hag
Book article from: The Oxford Pocket Dictionary of Current English ...of an ugly old woman (often used as a term of disparagement for a woman): a fat old hag in a dirty apron. 2. short for hagfish . DERIVATIVES: hag·gish adj. hag 2 • n. Scot. & N. English 1. (also peat hag ) an overhang...
Pteraspidomorpha
Book article from: A Dictionary of Zoology Pteraspidomorpha Superorder of jawless vertebrates which includes the order Myxiniformes (hagfish).
fish
Book article from: A Dictionary of Zoology ...chambered heart, no internal nostrils, and at least a median fin as well as a tail fin. If the Agnatha (lampreys and hagfish) are excluded, the fish ( Pisces ) would still include the Chondrichthyes (sharks and rays), in which the skeleton is...
aestivation
Book article from: A Dictionary of Zoology aestivation ( estivation ) Dormancy or sluggishness that occurs in some animals (e.g. snails and hagfish) during a period when conditions are hot and dry. Aestivation is analogous to hibernation in cold environments and normally lasts the length of the dry period or season.
cartilaginous fish
Book article from: A Dictionary of Earth Sciences ...entirely of cartilage and never, even in the adult stage, comprises bony tissue. Sharks and rays ( Chondrichthyes ) have a cartilaginous skeleton, as have other lower vertebrates, e.g. the jawless lampreys and hagfish ( Agnatha ).
Ostracodermi
Book article from: A Dictionary of Zoology ...indicates only a grade of development; some ostracoderms are close to the line of ancestry of the living Agnatha (lamprey and hagfish), others to the origin of the jawed vertebrates. The informal version of the name survives. See also CEPHALASPIDOMORPHI...
hypophysial sac
Book article from: A Dictionary of Zoology hypophysial sac ( Rathke's pouch ) A median pit in the roof of the mouth of vertebrates. In the Agnatha (lampreys and hagfish) it is associated with the nasal pit to form the nasohypophysial sac. In all animals of the superclass Gnathostomata it forms much of the pituitary body .
Hyperotreti
Book article from: A Dictionary of Zoology Hyperotreti An older name for the order Myxiniformes (hagfish).

Related newspaper, magazine, and trade journal articles from HighBeam Research

Pacific hagfish, Eptatretus stouti, and black hagfish, E. deani: the Oregon Fishery and Port sampling observations, 1988-92.
Magazine article from: Marine Fisheries Review; 9/22/1993; ; 700+ words ; Introduction Hagfish, Eptatretus spp., of the class Agnatha...are separate, and both male and female hagfish have a single gonad. During each spawning...fertilized after extrusion (Jensen, 1966). Hagfish have numerous glands along both sides...
Researchers Seek Secrets of Hagfish
News Wire article from: AP Online; 5/19/2002; ; 700+ words ; ...to unravel the slimy mysteries of the hagfish, one of the sea' s oldest and oddest...reproduction. No one has found a fertilized hagfish egg in the last 100 years, said Stacia...other fish have dwindled, the strange hagfish have become one of New England's newest...
Researchers seek secrets of hideous hagfish, New England's newest fishery
News Wire article from: AP Worldstream; 5/23/2002; ; 700+ words ; ...to unravel the slimy mysteries of the hagfish, one of the sea' s oldest and oddest...reproduction. No one has found a fertilized hagfish egg in the last 100 years, said Stacia...other fish have dwindled, the strange hagfish have become one of New England's newest...
Fine structure of spermatozoa of the hagfish Eptatretus burgeri (Agnatha).
Magazine article from: The Biological Bulletin; 8/1/1995; ; 700+ words ; ...reproduction, especially fertilization, in hagfish (Dean, 1899; Walvig, 1963; Gorbman...structures of the testes and spermatozoa of hagfish have been described in Myxine glutinosa...studies on the formation and structure of hagfish spermatozoa in Myxine circifrons, M...
North Sider's hagfish fossil find is really one for the books
Newspaper article from: Chicago Sun-Times; 11/1/1991; ; 656 words ; ...science today shines upon the plug-ugly hagfish - a scaleless, soft-skinned scavenger...confirmed to be a 300-million-year-old hagfish, the oldest ever. "I didn't even know what a hagfish was at the time," said Sroka, who found...
A hagfish by any other name would not smell as sweet.(RESEARCH NEWS)
Magazine article from: Oceanus; 7/1/2007; ; 700+ words ; It's not hard to figure out how hagfish got their name, as they aren't exactly...expedition south of Easter Island was the first hagfish captured from a hydrothermal vent site...what researchers had then suspected: The hagfish was a new species, and one of the deepest...
A New Species of Hagfish (Myxinidae: Eptatretus) Associated with Deep-Sea Coral Habitat in the Western North Atlantic
Magazine article from: Copeia; 3/21/2008; ; 700+ words ; ...color. Eptatretus lopheliae is a small hagfish species observed, videotaped, and caught...with Lophelia pertusa reef habitat. THE hagfish family Myxinidae is composed of two subfamilies...describe a new species of five-gilled hagfish, Eptatretus lophellae, which was collected...
A New Species of Giant Seven-gilled Hagfish (Myxinidae: Eptatretus) from New Zealand
Magazine article from: Copeia; 5/26/2006; ; 700+ words ; ...1275 nun TL and 6.2 kg, is the largest hagfish yet known. THE seven-gilled hagfishes...carlhubbsi had been the largest known hagfish, with nine specimens measuring 8101160...single specimen of an extremely large hagfish was taken off northeastern New Zealand...
Hagfish named after discoverer Submarine pilot found it in Pacific
Newspaper article from: The Boston Globe; 2/19/2007; ; 520 words ; ...his name. Behold the latest species of hagfish, the Eptatretus strickrotti. "I'm...Oceanographic Institution, discovered the hagfish in March 2005, while plumbing the inky...that the fish was a new member of the hagfish family and one of the deepest-dwelling...
Ikaros proteins discovered in hagfish and urochordate.
Newspaper article from: Health & Medicine Week; 1/5/2004; 700+ words ; ...proteins have been identified in species of hagfish and urochordate, shedding new light on...like (IFL) protein from the agnathan hagfish Myxine glutinosa and the marine urochordate...showed. "Expression of the IFL gene in hagfish was strongest in blood, intestine, and...