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Lycogrammoides
''Lycogrammoides'' is a monospecific genus of marine ray-finned fish belonging to the family Zoarcidae, the eelpouts. Its only species is ''Lycogrammoides schmidti'', a rare species of the Sea of Okhotsk in the northwestern Pacific Ocean. Taxonomy ''Lycogrammoides'' was first proposed as a monospecific genus in 1928 by the Soviet zoologists Vladimir Soldatov and Georgiĭ Ustinovich Lindberg when they described ''Lycogrammoides schmidti''. The type locality of this species is Tauyskaya Bay, off Ol'skii Island in the northern Sea of Okhotsk at a depth of . This genus is classified within the subfamily Lycodinae, one of 4 subfamilies in the family Zoarcidae, the eelpouts. This genus is the sister taxon to '' Bothrocara'', '' Bothrocarina'' and ''Lycodapus'', and these four genera form a clade within the subfamily Lycodinae. Etymology ''Lycogrammoides'' means having the form of ''Lycogrammus'', a synonym of ''Bothrocara''. The specific name honours the Soviet ichthyologist and wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycodinae
Lycodinae is a subfamily of marine ray-finned fish belonging to the family Zoarcidae, the eelpouts. These eelpouts are found are in all the world's oceans, with a number of species being found off southern South America. Taxonomy Lycodinae was first proposed as a taxonomic grouping in 1861 by the American zoologist Theodore Gill. The subfamily is classified within the eelpout family, Zoarcidae part of the suborder Zoarcoidei within the order Scorpaeniformes. The name of the subfamily derives from its type genus, ''Lycodes'', which means "wolf-like" and refers to the then presumed close relationship of that taxon to the wolffish. Genera Lycodinae contains the following genera: Characteristics Lycodinae eelpouts have elongate heads and bodies, they have between 58 and 144 vertebrae. The branchiostegal membranes are typically attached to the isthmus, although not in ''Lycodapus''. Most have a wide bill slit but some in some species it is more restricted. The do not usually posses ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bothrocara
''Bothrocara'' is a genus of marine ray-finned fishes belonging to the family Zoarcidae, the eelpouts. They are found in the Pacific Ocean with one species reaching the southwestern Atlantic Ocean. Taxonomy ''Bothrocara'' was first proposed as a monospecific genus in 1890 by the American ichthyologist Tarleton Hoffman Bean when he described ''Bothrocara mollis'' from Cape St. James, in Haida Gwaii, British Columbia. This genus is classified within the subfamily Lycodinae, one of 4 subfamilies in the family Zoarcidae, the eelpouts. This genus is the sister taxon to '' Bothrocarina'', ''Lycodapus'' and ''Lycogrammoides'', and these four genera form a clade within the subfamily Lycodinae. Etymology ''Bothrocara'' is a compound of ''bothros'', which means "pit" or "trench", and ''kara'', meaning head, an allusion to the large pores along jaws and reaching back to the operculum in ''B. mollis''. Species Species include: A review of the genus in 2011 placed ''B. elongata'', ''B. ny ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoarcidae
The eelpouts are the ray-finned fish family (biology), family Zoarcidae. As the common name suggests, they are somewhat eel-like in appearance. All of the roughly 300 species are ocean, marine and mostly bottom-dwelling, some at great depths. Eelpouts are predominantly found in the Northern Hemisphere. The arctic, north pacific and north Atlantic oceans have the highest concentration of species, however species are found around the globe. They are conventionally placed in the "perciform" assemblage; in fact, the Zoarcoidei seem to be specialized members of the Gasterosteiformes-Scorpaeniformes group of Acanthopterygii. The largest member of the family is ''Zoarces americanus'', which may reach 1.1 m in length. Other notable genera include ''Lycodapus'' and ''Gymnelus''. Taxonomy The eelpout family was first proposed as the family Zoarchidae in 1839 by the English naturalist William John Swainson but the spelling was changed to Zoarcidae after the spelling of the genus Zoarces w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eelpout
The eelpouts are the ray-finned fish family Zoarcidae. As the common name suggests, they are somewhat eel-like in appearance. All of the roughly 300 species are marine and mostly bottom-dwelling, some at great depths. Eelpouts are predominantly found in the Northern Hemisphere. The arctic, north pacific and north Atlantic oceans have the highest concentration of species, however species are found around the globe. They are conventionally placed in the "perciform" assemblage; in fact, the Zoarcoidei seem to be specialized members of the Gasterosteiformes-Scorpaeniformes group of Acanthopterygii. The largest member of the family is ''Zoarces americanus'', which may reach 1.1 m in length. Other notable genera include ''Lycodapus'' and ''Gymnelus''. Taxonomy The eelpout family was first proposed as the family Zoarchidae in 1839 by the English naturalist William John Swainson but the spelling was changed to Zoarcidae after the spelling of the genus Zoarces was corrected by Theodore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Schmidt (zoologist)
Peter Yulievich Schmidt (born 23 December 1872, St. Petersburg, died 25 November 1949, Leningrad) was a Russian and Soviet zoologist, ichthyologist and museum curator. Peter Yulievich Schmidt attended the gymnasium of KI May before studying at the Physics and Mathematics Faculty of St. Petersburg University, from where he graduated in 1895. He was engaged in the laboratory of Professor V.M. Shimkevich and V.T. Shevyakov. He travelled through Semirechiy in 1899-1902. In 1908-1910 he participated in the Kamchatka expedition of F. P. Ryabushinsky, where he headed the zoological department. In 1906, he was awarded with a gold medal named after Petr Petrovich Semyonov by the Imperial Russian Geographical Society. From 1906 to 1930 he held the position of a professor at the Agricultural Institute in St. Petersburg (Leningrad) and from 1914 to 1931 he worked at the Zoological Museum of the Russian Academy of Sciences. From 1930 to 1949 Schmidt was a scientific secretary to the Pacific C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lycodapus
Lycodapus is a genus of marine ray-finned fishes belonging to the family Zoarcidae, the eelpouts. The species in this genus are found in the Pacific and Southern Oceans. Taxonomy ''Lycodapus'' was first proposed as a monospecific genus in 1890 by the American ichthyologist Charles Henry Gilbert when he described ''Lycodapus fierasfer'' from the Gulf of California. This genus is classified within the subfamily Lycodinae, one of 4 subfamilies in the family Zoarcidae, the eelpouts. This genus is the sister taxon to '' Bothrocara'', '' Bothrocarina'' and '' Lycogrammoides'', and these four genera form a clade within the subfamily Lycodinae. Etymology ''Lycodapus'' is a compound of the Greek word or "wolf", ''lykos'', a reference to the type genus of the Lycodinae, abd ''apous'', which means "without feet", an allusion to the lack of pelvic fins in this genus. Species Lycodapus contains the following species: Characteristics ''Lycodapus'' eelpouts have bodies which vary from slen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bothrocarina
''Bothrocarina'' is a genus of marine ray-finned fishes belonging to the family Zoarcidae, the eelpouts. The two species in this genus are found in the Northwestern Pacific Ocean. Taxonomy ''Bothrocarina'' was first proposed as a monospecific genus in 1935 by the Soviet zoologist Evgeni Suvurov when he described the new species ''Bothrocarina nigrocaudata'' from the Okhotsk Sea. This genus is classified within the subfamily Lycodinae, one of 4 subfamilies in the family Zoarcidae, the eelpouts. This genus is the sister taxon to ''Bothrocara'', ''Lycodapus'' and ''Lycogrammoides'', and these four genera form a clade A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ... within the subfamily Lycodinae. Species ''Bothrocarina'' contains the following species: References {{Taxonbar, fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palatine Bone
In anatomy, the palatine bones () are two irregular bones of the facial skeleton in many animal species, located above the uvula in the throat. Together with the maxillae, they comprise the hard palate. (''Palate'' is derived from the Latin ''palatum''.) Structure The palatine bones are situated at the back of the nasal cavity between the maxilla and the pterygoid process of the sphenoid bone. They contribute to the walls of three cavities: the floor and lateral walls of the nasal cavity, the roof of the mouth, and the floor of the orbits. They help to form the pterygopalatine and pterygoid fossae, and the inferior orbital fissures. Each palatine bone somewhat resembles the letter L, and consists of a horizontal plate, a perpendicular plate, and three projecting processes—the pyramidal process, which is directed backward and lateral from the junction of the two parts, and the orbital and sphenoidal processes, which surmount the vertical part, and are separated by a dee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vomerine Teeth
The vomer (; lat, vomer, lit=ploughshare) is one of the unpaired facial bones of the skull. It is located in the midsagittal line, and articulates with the sphenoid, the ethmoid, the left and right palatine bones, and the left and right maxillary bones. The vomer forms the inferior part of the nasal septum in humans, with the superior part formed by the perpendicular plate of the ethmoid bone. The name is derived from the Latin word for a ploughshare and the shape of the bone. In humans The vomer is situated in the median plane, but its anterior portion is frequently bent to one side. It is thin, somewhat quadrilateral in shape, and forms the hinder and lower part of the nasal septum; it has two surfaces and four borders. The surfaces are marked by small furrows for blood vessels, and on each is the nasopalatine groove, which runs obliquely downward and forward, and lodges the nasopalatine nerve and vessels. Borders The ''superior border'', the thickest, presents a dee ... [...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 serve an important role in schooling behavior, predation, and orientation. Fish can use their lateral line system to follow the vortices produced by fleeing prey. Lateral lines are usually visible as faint lines of pores running lengthwise down each side, from the vicinity of the gill covers to the base of the tail. In some species, the receptive organs of the lateral line have been modified to function as electroreceptors, which are organs used to detect electrical impulses, and as such, these systems remain closely linked. Most amphibian larvae and some fully aquatic ad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Anatomy
Fish anatomy is the study of the form or morphology of fish. It can be contrasted with fish physiology, which is the study of how the component parts of fish function together in the living fish. In practice, fish anatomy and fish physiology complement each other, the former dealing with the structure of a fish, its organs or component parts and how they are put together, such as might be observed on the dissecting table or under the microscope, and the latter dealing with how those components function together in living fish. The anatomy of fish is often shaped by the physical characteristics of water, the medium in which fish live. Water is much denser than air, holds a relatively small amount of dissolved oxygen, and absorbs more light than air does. The body of a fish is divided into a head, trunk and tail, although the divisions between the three are not always externally visible. The skeleton, which forms the support structure inside the fish, is either made of cartilage ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudobranch
The pseudobranch, also pseudobranchia is the reduced first gill arch of a fish (on the inner surface of the opercle, near the junction of the preopercle) as well as a reduced "false" gill in some gastropods. In teleost fish, the pseudobranchs are mostly without respiratory function, and in elasmobranch Elasmobranchii () is a subclass of Chondrichthyes or cartilaginous fish, including sharks (superorder Selachii), rays, skates, and sawfish (superorder Batoidea). Members of this subclass are characterised by having five to seven pairs of g ...s they are the gill arch of the spiracle. The function of the pseudobranch is unknown, but it is believed that it supplies highly oxygenated blood to the optic choroid and retina and may have baroreceptor (pressure) and thermoregulation functions. It may also be a site of oxygen chemoreception. External links Picture of trout pseudobranchPseudobranch description incl. picture References Fish anatomy {{vertebrate-anatomy-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
