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China Rockfish
The China rockfish (''Sebastes nebulosus''), the yellowstripe rockfish or yellowspotted rockfish, is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is native to the waters of the Pacific Ocean off western North America. Taxonomy The China rockfish was first formally described in 1854 by the American zoologist William Orville Ayres with the type locality given as Santa Barbara and Monterey, California. Some authorities place this species in the subgenus ''Pteropodus''. The specific name ''nebulosus'' means "cloudy" a reference to the yellow body mottled with dark brown. The species was actually described by both Ayres and Girard in the same year, with Girard naming the species ''S. fasciatus'', but it was thought that that name had already been used for the Acadian redfish by David Humphreys Storer and thus Ayres' choice prevailed. Description The China rockfish has a compact body with a small mouth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Orville Ayres
William Orville Ayres (September 11, 1817 – April 30, 1887) was an American physician and ichthyologist. Born in Connecticut, he studied to become a doctor at Yale University School of Medicine. Life and career Ayers, the son of Jared and Dinah (Benedict) Ayres, was born in New Canaan, Conn, September 11, 1817. He graduated from Yale College in 1837. For fifteen years after graduation he was employed as a teacher as follows in Berlin, Conn. (1837–38), Miller's Place, L. I. (1838–41), East Hartford, Conn. (1842–44), Sag Harbor, L. I. (1844–47), and Boston, Mass (1845–52). He began the study of medicine in Boston, and in 1854 received the degree of M.D. from Yale College. He then removed to San Francisco, Cal., where he remained for nearly twenty years, engaged in practice. He also served as Professor of the Theory and Practice of Medicine in the Toland Medical College in that city. He removed to Chicago shortly before the great fire of 1871, in which he suffere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsal Fin
A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through convergent evolution they have independently evolved external superficial fish-like body plans adapted to their marine environments, including most numerously fish, but also mammals such as cetaceans ( whales, dolphins, and porpoises), and even extinct ancient marine reptiles such as various known species of ichthyosaurs. Most species have only one dorsal fin, but some have two or three. Wildlife biologists often use the distinctive nicks and wear patterns which develop on the dorsal fins of large cetaceans to identify individuals in the field. The bony or cartilaginous bones that support the base of the dorsal fin in fish are called ''pterygiophores''. Functions The main purpose of the dorsal fin is to stabilize the animal against r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovoviviparous
Ovoviviparity, ovovivipary, ovivipary, or aplacental viviparity is a term used as a "bridging" form of reproduction between egg-laying oviparous and live-bearing viviparous reproduction. Ovoviviparous animals possess embryos that develop inside eggs that remain in the mother's body until they are ready to hatch. The young of some ovoviviparous amphibians, such as '' Limnonectes larvaepartus'', are born as larvae, and undergo further metamorphosis outside the body of the mother. Members of genera '' Nectophrynoides'' and '' Eleutherodactylus'' bear froglets, not only the hatching, but all the most conspicuous metamorphosis, being completed inside the body of the mother before birth. Among insects that depend on opportunistic exploitation of transient food sources, such as many Sarcophagidae and other carrion flies, and species such as many Calliphoridae, that rely on fresh dung, and parasitoids such as tachinid flies that depend on entering the host as soon as possible ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Territory (animal)
In ethology, territory is the sociographical area that an animal consistently defends against conspecific competition (or, occasionally, against animals of other species) using agonistic behaviors or (less commonly) real physical aggression. Animals that actively defend territories in this way are referred to as being territorial or displaying territorialism. Territoriality is only shown by a minority of species. More commonly, an individual or a group of animals occupies an area that it habitually uses but does not necessarily defend; this is called its home range. The home ranges of different groups of animals often overlap, and in these overlap areas the groups tend to avoid each other rather than seeking to confront and expel each other. Within the home range there may be a ''core area'' that no other individual group uses, but, again, this is as a result of avoidance. Function The ultimate function of animals inhabiting and defending a territory is to increase the in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Columbia
British Columbia (commonly abbreviated as BC) is the westernmost Provinces and territories of Canada, province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, forests, lakes, mountains, inland deserts and grassy plains, and borders the province of Alberta to the east and the Yukon and Northwest Territories to the north. With an estimated population of 5.3million as of 2022, it is Canada's Population of Canada by province and territory, third-most populous province. The capital of British Columbia is Victoria, British Columbia, Victoria and its largest city is Vancouver. Vancouver is List of census metropolitan areas and agglomerations in Canada, the third-largest metropolitan area in Canada; the 2021 Canadian census, 2021 census recorded 2.6million people in Metro Vancouver Regional District, Metro Vancouver. The First Nations in Canada, first known human inhabi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
California
California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the most populated subnational entity in North America and the 34th most populous in the world. The Greater Los Angeles area and the San Francisco Bay Area are the nation's second and fifth most populous urban regions respectively, with the former having more than 18.7million residents and the latter having over 9.6million. Sacramento is the state's capital, while Los Angeles is the most populous city in the state and the second most populous city in the country. San Francisco is the second most densely populated major city in the country. Los Angeles County is the country's most populous, while San Bernardino County is the largest county by area in the country. California borders Oregon to the north, Nevada and Arizona to the ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Nicolas Island
San Nicolas Island (Spanish: ''Isla de San Nicolás''; Tongva: ''Haraasnga'') is the most remote of the Channel Islands, off of Southern California, 61 miles (98 km) from the nearest point on the mainland coast. It is part of Ventura County. The 14,562 acre (58.93 km2 or 22.753 sq mi) island is currently controlled by the United States Navy and is used as a weapons testing and training facility, served by Naval Outlying Landing Field San Nicolas Island. The uninhabited island is defined by the United States Census Bureau as Block Group 9, Census Tract 36.04 of Ventura County, California. The Nicoleño Native American tribe inhabited the island until 1835. As of the 2000 U.S. Census, the island has since remained officially uninhabited, though the census estimates that at least 200 military and civilian personnel live on the island at any given time. The island has a small airport, though the runway is the second longest in Ventura County (slightly behind the one at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redondo Beach, California
Redondo Beach (Spanish for ''round'') is a coastal city in Los Angeles County, California, United States, located in the South Bay (Los Angeles County), South Bay region of the Greater Los Angeles area. It is one of three adjacent Beach Cities, beach cities along the southern portion of Santa Monica Bay. The population was 71,576 at the 2020 census, up from 66,748 at the 2010 census. Redondo Beach was originally part of the 1785 Rancho San Pedro Spain, Spanish land grant that later became the South Redondo area. The primary attractions include Redondo Beach pier, Municipal Pier and the sandy beach, popular with tourists and a variety of sports enthusiasts. The Redondo Beach station, western terminus of the C Line (Los Angeles Metro), Metro Rail C Line (formerly the Green Line) is in North Redondo Beach. History The Chowigna, California, Chowigna Indians used the site of today's Hopkins Wilderness Park, formerly Nike missile site LA-57 from 1956 to 1963, in Redondo Beach, Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kodiak Island
Kodiak Island (Alutiiq language, Alutiiq: ''Qikertaq''), is a large island on the south coast of the U.S. state of Alaska, separated from the Alaska mainland by the Shelikof Strait. The largest island in the Kodiak Archipelago, Kodiak Island is the List of islands of the United States by area, second largest island in the United States and the List of islands by area, 80th largest island in the world, with an area of , slightly larger than Cyprus. It is long and in width ranges from . Kodiak Island is the namesake for Kodiak Seamount, which lies off the coast at the Aleutian Trench. The largest community on the island is the city of Kodiak, Alaska. Kodiak Island is mountainous and heavily forested in the north and east, but fairly treeless in the south. The island has many deep, ice-free bays that provide sheltered anchorages for boats. The southwestern two-thirds of the island, like much of the Kodiak Archipelago, is part of Kodiak National Wildlife Refuge. Kodiak Island is p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pelvic Fin
Pelvic fins or ventral fins are paired fins located on the ventral surface of fish. The paired pelvic fins are homologous to the hindlimbs of tetrapods. Structure and function Structure In actinopterygians, the pelvic fin consists of two endochondrally-derived bony girdles attached to bony radials. Dermal fin rays ( lepidotrichia) are positioned distally from the radials. There are three pairs of muscles each on the dorsal and ventral side of the pelvic fin girdle that abduct and adduct the fin from the body. Pelvic fin structures can be extremely specialized in actinopterygians. Gobiids and lumpsuckers modify their pelvic fins into a sucker disk that allow them to adhere to the substrate or climb structures, such as waterfalls. In priapiumfish, males have modified their pelvic structures into a spiny copulatory device that grasps the female during mating. File:Pelvic fin skeleton.png, Pelvic fin skeleton for ''Danio rerio'', zebrafish. File:Zuignap waarmee de zwartbek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Hockey Stick
An ice hockey stick is a piece of equipment used in ice hockey to shoot, pass, and carry the puck across the ice. Ice hockey sticks are approximately 150–200 cm long, composed of a long, slender shaft with a flat extension at one end called the blade. National Hockey League (NHL) sticks are up to 63 inches (160 cm) long. The blade is the part of the stick used to contact the puck, and is typically 25 to 40 cm long. Stick dimensions can vary widely, as they are usually built to suit a particular player's size and preference. The blade is positioned at roughly a 135° angle from the axis of the shaft, giving the stick a partly 'L-shaped' appearance. The shaft of the stick is fairly rigid, but is slightly elastic to improve shot performance. The blade is slightly curved to aid control of the puck, especially in shooting. The direction of the curve depends on the side of the body the player wields the stick on. The goaltender has a slightly modified stick. The lower ... [...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] |
