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Gymnotus Tigre
''Gymnotus tigre'', the tiger knifefish, is a species of naked-backed South American knifefish in the family Gymnotidae, inhabiting the upper reaches of the Amazon basin. Nomenclature Both the tiger knifefish's common and scientific names refer to the tiger-like stripes present on the fish's flanks, with the common name being coined by local aquarium traders. It is the type species for a clade within ''Gymnotus'' dubbed the "Tigre subgenus"; this subgenus is the second-most widespread group of ''Gymnotus'', ranging from Panama to northern Argentina (though ''G. tigre'' itself has a more restricted range). Description ''Gymnotus tigre'' has a number of diagnostic traits; the markings consist of irregular pale yellow blotches and bands on the body, with blotches on the head and in front of the opercle and alternating bands furthermore; the lighter bands may be broader than the darker brown stripes. Lastly, they have oblique stripes and a "hyaline" patch on their tail-end. These ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James S
James may refer to: People * James (given name) * James (surname) * James (musician), aka Faruq Mahfuz Anam James, (born 1964), Bollywood musician * James, brother of Jesus * King James (other), various kings named James * Prince James (other) * Saint James (other) Places Canada * James Bay, a large body of water * James, Ontario United Kingdom * James College, a college of the University of York United States * James, Georgia, an unincorporated community * James, Iowa, an unincorporated community * James City, North Carolina * James City County, Virginia ** James City (Virginia Company) ** James City Shire * James City, Pennsylvania * St. James City, Florida Film and television * ''James'' (2005 film), a Bollywood film * ''James'' (2008 film), an Irish short film * ''James'' (2022 film), an Indian Kannada-language film * "James", a television episode of ''Adventure Time'' Music * James (band), a band from Manchester ** ''James'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyaline
A hyaline substance is one with a glassy appearance. The word is derived from , and . Histopathology Hyaline cartilage is named after its glassy appearance on fresh gross pathology. On light microscopy of H&E stained slides, the extracellular matrix of hyaline cartilage looks homogeneously pink, and the term "hyaline" is used to describe similarly homogeneously pink material besides the cartilage. Hyaline material is usually acellular and proteinaceous. For example, arterial hyaline is seen in aging, high blood pressure, diabetes mellitus and in association with some drugs (e.g. calcineurin inhibitors). It is bright pink with PAS staining. Ichthyology and entomology In ichthyology and entomology Entomology (from Ancient Greek ἔντομον (''éntomon''), meaning "insect", and -logy from λόγος (''lógos''), meaning "study") is the branch of zoology that focuses on insects. Those who study entomology are known as entomologists. In ..., ''hyaline'' denotes a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypaxial
In adult vertebrates, trunk muscles can be broadly divided into hypaxial muscles, which lie ventral to the horizontal septum of the vertebrae and epaxial muscles, which lie dorsal to the septum. Hypaxial muscles include some vertebral muscles, the diaphragm, the abdominal muscles, and all limb muscles. The serratus posterior inferior and serratus posterior superior are innervated by the ventral primary ramus and are hypaxial muscles. Epaxial muscles include other (dorsal) muscles associated with the vertebrae, ribs, and base of the skull. In humans, the erector spinae, the transversospinales (including the multifidus, semispinalis and rotatores), the splenius and suboccipital muscles are the only epaxial muscles. Hypaxial and epaxial muscles develop directly from somitic cells. Differentiation of hypaxial and epaxial muscles is postulated to have evolved as a new trait in vertebrate animals. Location The hypaxial muscles are located on the ventral side of the body, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Organ (fish)
file:Elektroplax_Rochen.png, An electric ray (Torpediniformes) showing location of paired electric organs in the head, and electrocytes stacked within it In biology, the electric organ is an organ (biology), organ that an electric fish uses to create an electric field. Electric organs are derived from modified muscle or in some cases nerve tissue, called electrocytes, and have evolved at least six times among the Elasmobranchii, elasmobranchs and teleosts. These fish use their electric discharges for animal navigation, navigation, communication, mating, defence in animals, defence, and in strongly electric fish also for the incapacitation of Predation, prey. The electric organs of two strongly electric fish, the Electric ray, torpedo ray and the electric eel, were first studied in the 1770s by John Walsh (scientist), John Walsh, Hugh Williamson, and John Hunter (surgeon), John Hunter. Charles Darwin used them as an instance of convergent evolution in his 1859 ''On the Origin of S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rami
Rami or Ramy may refer to: People Given name In music *Rami (singer), Japanese singer * Rami El-Kaleh (born 1983), Libyan-Irish musician *Rami Jaffee (born 1969), American keyboardist *Rami Kleinstein (born 1962), Israeli singer and composer *Rami Yacoub (born 1975), Swedish music producer and songwriter known professionally as ''Rami'' * Rami Yosifov, Israeli guitarist In sports *Rami Hakanpää (born 1978), Finnish footballer * Rami Koivisto (born 1968), Finnish ice hockey player *Rami Miron (born 1957), Olympic wrestler * Rami Nieminen (born 1966), Finnish footballer * Rami Sebei (born 1984), Canadian professional wrestler *Rami Shaaban (born 1975), Swedish footballer *Rami Zur (born 1977), American Olympic sprint canoeist In law and politics * Rami Jarrah (born 1984), British-Syrian award-winning journalist, a.k.a. Alexander Page * Rami Aman (born 1981/82), Palestinian journalist and peace activist in the Gaza Strip *Rami Hamdallah (born 1958), Palestinian prime minister Oth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lateral Line
The lateral line, also called the lateral line organ (LLO), is a system of sensory organs found in fish, used to detect movement, vibration, and pressure gradients in the surrounding water. The sensory ability is achieved via modified epithelial cells, known as hair cells, which respond to displacement caused by motion and transduce these signals into electrical impulses via excitatory synapses. Lateral lines play an important role in schooling behavior, predation, and orientation. Early in the evolution of fish, some of the sensory organs of the lateral line were modified to function as the electroreceptors called ampullae of Lorenzini. The lateral line system is ancient and basal to the vertebrate clade, as it is found in fishes that diverged over 400 million years ago. Function The lateral line system allows the detection of movement, vibration, and pressure gradients in the water surrounding an animal. It plays an essential role in orientation, predation, and fish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumorbital
In scaled reptiles, the ocular scales are those forming the margin of the eye.Wright AH, Wright AA. 1957. ''Handbook of Snakes''. Comstock Publishing Associates (7th printing, 1985). 1105 pp. . The name originates from the term which is Latin for 'eye' and, in the broadest sense, refers to a scale associated with the eye. The numbers of these scales present, and sometimes the shapes and sizes, are some of many characteristics used to differentiate species from one another. Prefixes are usually included to indicate the positions or locations of the individual scales:Mallow D, Ludwig D, Nilson G. 2003. ''True Vipers: Natural History and Toxinology of Old World Vipers''. Malabar, Florida: Krieger Publishing Company. 359 pp. .Smith MA. 1943. ''The Fauna of British India, Ceylon and Burma including the whole of the Indo-Chinese Sub-region, Reptilia and Amphibia Vol III-Serpentes''. Taylor and Francis, London. page 29. * Preocular scales, or preoculars, are those lying directly in fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Scale
A fish scale is a small rigid plate that grows out of the skin of a fish. The skin of most jawed fishes is covered with these protective scales, which can also provide effective camouflage through the use of reflection and colouration, as well as possible hydrodynamic advantages. The term ''scale'' derives from the Old French , meaning a shell pod or husk. Scales vary enormously in size, shape, structure, and extent, ranging from strong and rigid armour plates in fishes such as shrimpfishes and boxfishes, to microscopic or absent in fishes such as eels and anglerfishes. The morphology (biology), morphology of a scale can be used to identify the species of fish it came from. Scales originated within the jawless ostracoderms, ancestors to all jawed fishes today. Most bony fishes are covered with the cycloid scales of salmon and carp, or the ctenoid scales of perch, or the ganoid scales of sturgeons and gars. Cartilaginous fishes (sharks and rays) are covered with placoi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Superior Mouth
A superior mouth is a mouth that opens upward, with the lower jaw more anterior than the upper jaw. This is an effect typically seen in fish. This usually means that the fish feeds from the surface of the body of water in which it dwells. A superior mouth is associated with fish in more stationary waters, such as those in lake ecosystem A lake ecosystem or lacustrine ecosystem includes biotic (living) plants, animals and micro-organisms, as well as abiotic (non-living) physical and chemical interactions. Lake ecosystems are a prime example of lentic ecosystems (''lentic'' ref ...s. References Diseases of oral cavity, salivary glands and jaws Fish anatomy {{Vertebrate anatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internal Organ
In a multicellular organism, an organ is a collection of tissues joined in a structural unit to serve a common function. In the hierarchy of life, an organ lies between tissue and an organ system. Tissues are formed from same type cells to act together in a function. Tissues of different types combine to form an organ which has a specific function. The intestinal wall for example is formed by epithelial tissue and smooth muscle tissue. Two or more organs working together in the execution of a specific body function form an organ system, also called a biological system or body system. An organ's tissues can be broadly categorized as parenchyma, the functional tissue, and stroma, the structural tissue with supportive, connective, or ancillary functions. For example, the gland's tissue that makes the hormones is the parenchyma, whereas the stroma includes the nerves that innervate the parenchyma, the blood vessels that oxygenate and nourish it and carry away its metabolic wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Body Cavity
A body cavity is any space or compartment, or potential space, in an animal body. Cavities accommodate organs and other structures; cavities as potential spaces contain fluid. The two largest human body cavities are the ventral body cavity, and the dorsal body cavity. In the dorsal body cavity the brain and spinal cord are located. The membranes that surround the central nervous system organs (the brain and the spinal cord, in the cranial and spinal cavities) are the three meninges. The differently lined spaces contain different types of fluid. In the meninges for example the fluid is cerebrospinal fluid; in the abdominal cavity the fluid contained in the peritoneum is a serous fluid. In amniotes and some invertebrates the peritoneum lines their largest body cavity called the coelom. Mammals Mammalian embryos develop two body cavities: the intraembryonic coelom and the extraembryonic coelom (or chorionic cavity). The intraembryonic coelom is lined by somatic and s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gymnotus Carapo
The banded knifefish (''Gymnotus carapo'') is a species of gymniform knifefish native to a wide range of freshwater habitats in South America. It is the most widespread species of '' Gymnotus'', but it has frequently been confused with several relatives, including some found outside its range like the Central America '' G. maculosus''. The English name "banded knifefish" is sometimes used for the entire genus ''Gymnotus'' instead of only the species ''G. carapo''. Range and habitat This South American fish is found in the Amazon, Orinoco and Río de la Plata basins, as well as rivers in the Guianas, northeastern Brazil (only those exiting along the country's northern coast, such as Parnaíba) and northern Argentina (south to the 36th parallel south), and in Trinidad. This makes it the most widespread species of ''Gymnotus''. ''G. carapo'' occurs in virtually any freshwater habitat in its range, such as rivers and streams (both slow- and fast-flowing), floodplains, estuaries, sw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
