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Rathbunella Alleni
''Rathbunella'' is a genus of marine ray-finned fishes belonging to the Family (biology), family Bathymasteridae, the ronquils. These fishes are found in the eastern Pacific Ocean. Taxonomy ''Rathbunella'' was first proposed as a Monotypic taxon, monotypic genus by the American ichthyologists David Starr Jordan and Barton Warren Evermann in 1896 with ''Bathymaster hypoplectus'', which had been Species description, described by Charles Henry Gilbert from Southern California in 1890, as its type species. The genus is classified in the family Bathymasteridae which is in the Scorpaeniformes, Scorpaeniform suborder Zoarcoidei. The genus name,''Rathbunella'' honors Richard Rathbun, who was the chief of the Division of Scientific Inquiry in the United States Fish Commission, in recognition of his services to science. Species There are currently two recognized species in this genus: * ''Rathbunella alleni'' Gilbert, 1904 * ''Rathbunella hypoplecta'' (Gilbert, 1890) (Stripefin ronquil) C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Starr Jordan
David Starr Jordan (January 19, 1851 – September 19, 1931) was the founding president of Stanford University, serving from 1891 to 1913. He was an ichthyologist during his research career. Prior to serving as president of Stanford University, he had served as president of Indiana University from 1884 to 1891. Starr was also a strong supporter of eugenics, and his published views expressed a fear of "race-degeneration" and asserted that cattle and human beings are "governed by the same laws of selection". He was an antimilitarist since he believed that war killed off the best members of the gene pool, and he initially opposed American involvement in World War I. Early life and career Jordan was born in Gainesville, New York, and grew up on a farm in upstate New York. His parents made the unorthodox decision to educate him at a local girls' high school. His middle name, Starr, does not appear in early census records, and was apparently self-selected; he had begun using ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Rathbun
Richard Rathbun (January 25, 1852 – July 16, 1918) was an American biologist and administrator at the Smithsonian Institution. Biography Richard Rathbun was born in Buffalo, New York, to Charles Rathbun and his wife Marey (née Furey). He was schooled in Buffalo before joining his father's quarrying company, Whitmore and Rathbun, for four years. He was fascinated by fossils, and soon amassed a large collection. When he offered it to the Buffalo Society of Natural History, they decided to appoint him curator, and this marked the beginning of Richard's scientific career. In 1871, Rathbun entered Cornell University, going on to be an assistant in zoology at the Boston Society of Natural History two years later. In 1874 and 1875, he spend the summer assisting the work of the United States Fish Commission, a division of the Smithsonian Institution. He was appointed the official geologist of an expedition to Brazil to investigate its natural resources. The expedition was cut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baja California
Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of Baja California (). It has an area of (3.57% of the land mass of Mexico) and comprises the northern half of the Baja California Peninsula, north of the 28th parallel, plus oceanic Guadalupe Island. The mainland portion of the state is bordered on the west by the Pacific Ocean; on the east by Sonora, the U.S. state of Arizona, and the Gulf of California; on the north by the U.S. state of California; and on the south by Baja California Sur. The state has an estimated population of 3,769,020 as of 2020, significantly higher than the sparsely populated Baja California Sur to the south, and similar to San Diego County, California, to its north. Over 75% of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bahia San Carlos
Bahia ( , , ; meaning "bay") is one of the 26 states of Brazil, located in the Northeast Region of the country. It is the fourth-largest Brazilian state by population (after São Paulo, Minas Gerais, and Rio de Janeiro) and the 5th-largest by area. Bahia's capital is the city of Salvador (formerly known as "Cidade do São Salvador da Bahia de Todos os Santos", literally "City of the Saint Savior of the Bay of All the Saints"), on a spit of land separating the Bay of All Saints from the Atlantic. Once a monarchial stronghold dominated by agricultural, slaving, and ranching interests, Bahia is now a predominantly working-class industrial and agricultural state. The state is home to 7% of the Brazilian population and produces 4.2% of the country's GDP. Name The name of the state derives from the earlier captaincy of Bahia de Todos os Santos, named for Bay of All Saints (' in modern Portuguese), a major feature of its coastline. The bay itself was named by the explorer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Francisco Bay
San Francisco Bay is a large tidal estuary in the United States, U.S. state of California, and gives its name to the San Francisco Bay Area. It is dominated by the big cities of San Francisco, San Jose, California, San Jose, and Oakland, California, Oakland. San Francisco Bay drains water from approximately 40 percent of California. Water from the Sacramento River, Sacramento and San Joaquin River, San Joaquin rivers, and from the Sierra Nevada mountains, flow into Suisun Bay, which then travels through the Carquinez Strait to meet with the Napa River at the entrance to San Pablo Bay, which connects at its south end to San Francisco Bay. It then connects to the Pacific Ocean via the Golden Gate strait. However, this entire group of interconnected bays is often called the ''San Francisco Bay''. The bay was designated a Ramsar Convention, Ramsar Wetland of International Importance on February 2, 2017. Size The bay covers somewhere between , depending on which sub-bays (such a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Total Length
Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. Simply put, this measurement excludes the length of the caudal (tail) fin. * Total length (TL) is the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. It is a straight-line measure, not measured over the curve of the body. Standard length measurements are used with Teleostei (most bony fish), while total length measurements are used with Myxini ( hagfish), Petromyzontiformes ( lampreys), and (usually) Elasmobranchii (sharks and rays), as well as some other fishes. Total leng ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ronquilus
The Northern ronquil (''Ronquilus jordani'') is species of marine ray-finned fish belonging to the family Bathymasteridae, the ronquils. This species is found in the eastern Pacific Ocean. This species is the only known member of its genus. Taxonomy The stripedfin ronquil was first formally described as ''Bathymaster jordani'' in 1889 by the American ichthyologist Charles Henry Gilbert with the type locality given as Puget Sound in Washington. When David Starr Jordan and Edwin Chapin Starks proposed the monotypic genus ''Ronquilus'' they designated this species as its type species. The genus is classified in the family Bathymasteridae which is in the Scorpaeniform suborder Zoarcoidei. Etymology The genus name is an anglicization from the Spanish word ''ronco'', ''ronquillo'' being a diminutive, and which means “one who grunts”, although Jordan and Starks did not mention croaking. The specific name ''jordani'' honors David Starr Jordan who, with Gilbert, first id ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathymaster
''Bathymaster'' is a genus of marine ray-finned fishes belonging to the family Bathymasteridae, the ronquils. These fishes are found in the northern Pacific Ocean. Taxonomy ''Bathymaster'' was first proposed as a monotypic genus in 1873 by the American paleontologist and biologist Edward Drinker Cope when he described its type species ''Bathymaster signatus'' from Sitka, Alaska. The genus is classified in the family Bathymasteridae which is in the Scorpaeniform suborder Zoarcoidei. The genus name, ''Bathymaster'', can be translated from the Greek to mean "deep searcher". Species There are currently four recognized species in this genus: * '' Bathymaster caeruleofasciatus'' C. H. Gilbert & Burke, 1912 (Alaskan ronquil) * '' Bathymaster derjugini'' Lindberg, 1930 (Blackspot ronquil) * '' Bathymaster leurolepis'' McPhail, 1965 (Smallmouth ronquil) * '' Bathymaster signatus'' Cope, 1873 (Searcher) Characteristics ''Bathymaster'' ronquils are distinguished from other gen ... [...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 aquati ... [...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] |
Gill Raker
Gill rakers in fish are bony or cartilaginous processes that project from the branchial arch (gill arch) and are involved with suspension feeding tiny prey. They are not to be confused with the gill filaments that compose the fleshy part of the gill used for gas exchange. Rakers are usually present in two rows, projecting from both the anterior and posterior side of each gill arch. Rakers are widely varied in number, spacing, and form. By preventing food particles from exiting the spaces between the gill arches, they enable the retention of food particles in filter feeders. The structure and spacing of gill rakers in fish determines the size of food particles trapped, and correlates with feeding behavior. Fish with densely spaced, elongated, comb-like gill rakers are efficient at filtering tiny prey, whereas carnivores and omnivores often have more widely spaced gill rakers with secondary projections. Because gill raker characters often vary between closely related taxa, they a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Branchiostegal Membrane
This glossary of ichthyology is a list of definitions of terms and concepts used in ichthyology, the study of fishes. A B C D E F G H I J K L M N O P R S T U V W {{glossaryend * Fishkeeping Ichthyology Ichthyology is the branch of zoology devoted to the study of fish, including bony fish ( Osteichthyes), cartilaginous fish (Chondrichthyes), and ja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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