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Galápagos Damsel
The Galápagos damsel (''Azurina eupalama''), also known as the blackspot chromis, is a possibly extinct fish species from the family Pomacentridae. It is endemic to the waters near the Galápagos Islands and Cocos Island. Description The Galápagos damsel reaches a length of 15 centimeters. It is olive-gray with a blue tinge, and silvery along the sides. There is a black spot at the base of each pectoral fin. It has a prominent lateral line.Froese, R. and D. Pauly, Eds''Azurina eupalama''.FishBase. 2013. Biology and occurrence The Galápagos damsel has been recorded from following regions in Galápagos: Floreana, Gardiner Bay, Española, Tagus Cove, Isabela, Marchena, James Bay and Sullivan Bay, Santiago, Wreck Bay, San Cristóbal, Academy Bay, Santa Cruz and Santa Fe. One specimen, found many years ago, which is in the fish collection at the American Museum of Natural History, was collected near Cocos Island. The Galápagos damsel is a plankton feeder. It has been suggested t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The IUCN Red List Of Threatened Species
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Museum Of Natural History
The American Museum of Natural History (abbreviated as AMNH) is a natural history museum on the Upper West Side of Manhattan in New York City. In Theodore Roosevelt Park, across the street from Central Park, the museum complex comprises 26 interconnected buildings housing 45 permanent exhibition halls, in addition to a planetarium and a library. The museum collections contain over 34 million specimens of plants, animals, fossils, minerals, rocks, meteorites, human remains, and human cultural artifacts, as well as specialized collections for frozen tissue and genomic and astrophysical data, of which only a small fraction can be displayed at any given time. The museum occupies more than . AMNH has a full-time scientific staff of 225, sponsors over 120 special field expeditions each year, and averages about five million visits annually. The AMNH is a private 501(c)(3) organization. Its mission statement is: "To discover, interpret, and disseminate—through scientific research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1903
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Most fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azurina
''Azurina'' is a genus of fish in the family Pomacentridae. Species The following species are classified within the genus Azurina: References {{Taxonbar, from=Q1839526 Azurina, Chrominae Marine fish genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Islands Of Peru
This is a list of islands of Peru. Alphabetical list This an alphabetical list of islands in Peru with an area larger than .INEI, Compendio Estadistica 2007, page 24–25. *Amantaní (9.3 km²) * Anapia Island (3.4 km²) * Asia Island (1.5 km²) *Blanca Island (4.0 km²) *Caana Island (1.2 km²) *Chirita Islands (4,8 km²) *Correa Island (4.6 km²) * Frontón Island (1.0 km²) *Ferrol Island (1.6 km²) *Guañape Islands (1.4 km²) * Iscaya Island (1.7 km²) * La Vieja Island (11.0 km²) *Lobos de Tierra Island (16.0 km²) *Lobos de Afuera Island (2.0 km²) *Matapalo Island (6.1 km²) * Quipata Island (1.4 km²) * San Gallan Island (9.3 km²) * San Lorenzo Island (16.5 km²) * Santa Ana Islands (3.4 km²) * Soto Island (2.6 km²) *Taquile Island (5.7 km²) * Tortuga Island (1.3 km²) * Ustute Island (1.4 km²) * Yuspique Island (3.2 km²) * Viuda Island (1.3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peru
, image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Perú.svg , other_symbol = Great Seal of the State , other_symbol_type = Seal (emblem), National seal , national_motto = "Firm and Happy for the Union" , national_anthem = "National Anthem of Peru" , march = "March of Flags" , image_map = PER orthographic.svg , map_caption = , image_map2 = , capital = Lima , coordinates = , largest_city = capital , official_languages = Peruvian Spanish, Spanish , languages_type = Co-official languages , languages = , ethnic_groups = , ethnic_groups_year = 2017 , demonym = Peruvians, Peruvian , government_type = Unitary state, Unitary Semi-presidential system, semi-presidential republic , leader_title1 = President of Peru, President ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Niño–Southern Oscillation
El Niño–Southern Oscillation (ENSO) is an irregular periodic variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean, affecting the climate of much of the tropics and subtropics. The warming phase of the sea temperature is known as ''El Niño'' and the cooling phase as ''La Niña''. The ''Southern Oscillation'' is the accompanying atmospheric component, coupled with the sea temperature change: ''El Niño'' is accompanied by high air surface pressure in the tropical western Pacific and ''La Niña'' with low air surface pressure there. The two periods last several months each and typically occur every few years with varying intensity per period. The two phases relate to the Walker circulation, which was discovered by Gilbert Walker during the early twentieth century. The Walker circulation is caused by the pressure gradient force that results from a high-pressure area over the eastern Pacific Ocean, and a low-pressure system over Indonesia. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floreana
Floreana Island (Spanish: ''Isla Floreana'') is an island of the Galápagos Islands. It was named after Juan José Flores, the first president of Ecuador Ecuador ( ; ; Quechuan languages, Quechua: ''Ikwayur''; Shuar language, Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechuan ..., during whose administration the government of Ecuador took possession of the archipelago. It was previously called Charles Island (after King Charles II of England), and Santa María (ship), Santa María after one of the caravels of Christopher Columbus, Columbus. The island has an area of . It was formed by volcanic eruption. The island's highest point is Cerro Pajas at , which is also the highest point of the volcano like most of the smaller islands of Galápagos. History Since the 19th century, Whaling, whalers kept a Barrel (storage), wooden barrel at Post Office Bay, so t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edmund Heller
Edmund Heller (May 21, 1875 – July 18, 1939) was an American zoologist. He was President of the Association of Zoos & Aquariums for two terms, from 1935-1936 and 1937-1938. Early life While at Stanford University, he collected specimens in the Colorado and Mojave Deserts in 1896-7 before graduating with a degree in zoology in 1901. Contributions In 1907, Heller was with Carl Ethan Akeley on the Field Columbian Museum's African expedition. On his return, he was appointed Curator of Mammals at the Museum of Vertebrate Zoology of the University of California and participated in the 1908 Alexander Alaska Expedition. In 1909, Heller began working with the Smithsonian Institution when he was chosen as naturalist for large mammals on the Smithsonian-Roosevelt African Expedition under the command of Colonel Theodore Roosevelt. He worked closely with John Alden Loring who worked as naturalist for the small mammals on the Expedition and they collaborated on their field notes. On his ... [...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] |
