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Dascyllus Albisella
''Dascyllus albisella'' commonly known as the Hawaiian dascyllus, Hawaiian domino, Domino damselfish, or white-spotted damsel is a marine fish found in the Eastern Central Pacific. Description Length up to 12.5 cm, dark gray to black, but centers of scales on body are whitish. Habitat Associated with coral reefs, most usually in shallow, protected waters. swim in shallow water surface to 20 feet below in small openings. Distribution The species is found around the Hawaiian Islands and Johnston Island. Behavior ''Dascyllus albisella'' are a relatively passive species that spends most of their time foraging Foraging is searching for wild food resources. It affects an animal's Fitness (biology), fitness because it plays an important role in an animal's ability to survive and reproduce. Optimal foraging theory, Foraging theory is a branch of behaviora .... Normally, males are the more aggressive of the two genders as they are the ones that usually exhibit parental care. Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodore Gill
Theodore Nicholas Gill (March 21, 1837 – September 25, 1914) was an American ichthyologist, mammalogist, malacologist and librarian. Career Born and educated in New York City under private tutors, Gill early showed interest in natural history. He was associated with J. Carson Brevoort in the arrangement of the latter's entomological and ichthyological collections before going to Washington D.C. in 1863 to work at the Smithsonian Institution. He catalogued mammals, fishes and mollusks most particularly although maintaining proficiency in other orders of animals. He was librarian at the Smithsonian and also senior assistant to the Library of Congress. He was elected as a member of the American Philosophical Society in 1867. Gill was professor of zoology at George Washington University. He was also a member of the Megatherium Club at the Smithsonian Institution in Washington, D.C. Fellow members frequently mocked him for his vanity. He was president of the American Associati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viktor Pietschmann
Viktor Pietschmann (27 October 1881 – 11 November 1956) was an Austrian ichthyologist at the Naturhistorisches Museum, Vienna Museum of Natural History. He was the curator of the fish collection from 1919 to 1946 and made collecting trips to the Barents Sea, Greenland, Mesopotamia, Armenia, Hawaii, Romania, and Poland. Pietschmann described many new fish, including several species of shark, and had more than 50 publications over his career. He served in the Austrian army in World War I, during which he was stationed in the Ottoman Empire. While there, Pietschmann Witnesses and testimonies of the Armenian genocide, witnessed the Armenian genocide and took many photographs of the deportees. He joined the National Socialist German Workers' Party (NSDAP) in 1932 and remained a member until the end of World War II. His zoological author abbreviation is Pietschmann. See also :Taxa named by Viktor Pietschmann, taxa named by Viktor Pietschmann, anthis query Early life Viktor Pietschm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continents of Asia and Oceania in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about 32% of its total surface area, larger than Earth's entire land area combined .Pacific Ocean . '' Britannica Concise.'' 2008: Encyclopædia Britannica, Inc. The centers of both the |
Coral Reef
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and jellyfish. Unlike sea anemones, corals secrete hard carbonate exoskeletons that support and protect the coral. Most reefs grow best in warm, shallow, clear, sunny and agitated water. Coral reefs first appeared 485 million years ago, at the dawn of the Early Ordovician, displacing the microbial and sponge reefs of the Cambrian. Sometimes called ''rainforests of the sea'', shallow coral reefs form some of Earth's most diverse ecosystems. They occupy less than 0.1% of the world's ocean area, about half the area of France, yet they provide a home for at least 25% of all marine species, including fish, mollusks, worms, crustaceans, echinoderms, sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hawaiian Islands
The Hawaiian Islands ( haw, Nā Mokupuni o Hawai‘i) are an archipelago of eight major islands, several atolls, and numerous smaller islets in the North Pacific Ocean, extending some from the island of Hawaii in the south to northernmost Kure Atoll. Formerly the group was known to Europeans and Americans as the Sandwich Islands, a name that James Cook chose in honor of the 4th Earl of Sandwich, the then First Lord of the Admiralty. Cook came across the islands by chance when crossing the Pacific Ocean on his Third Voyage in 1778, on board HMS ''Resolution''; he was later killed on the islands on a return visit. The contemporary name of the islands, dating from the 1840s, is derived from the name of the largest island, Hawaii Island. Hawaii sits on the Pacific Plate and is the only U.S. state that is not geographically connected to North America. It is part of the Polynesia subregion of Oceania. The state of Hawaii occupies the archipelago almost in its entirety (includin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johnston Island
Johnston Atoll is an unincorporated territory of the United States, currently administered by the United States Fish and Wildlife Service (USFWS). Johnston Atoll is a National Wildlife Refuge and part of the Pacific Remote Islands Marine National Monument. It is closed to public entry, and limited access for management needs is only granted by Letter of Authorization from the United States Air Force and a Special Use Permit from the U.S. Fish and Wildlife Service. For nearly 70 years, the isolated atoll was under the control of the U.S. military. During that time, it was variously used as a naval refueling depot, an airbase, a testing site for nuclear and biological weapons, a secret missile base, and a site for the storage and disposal of chemical weapons and Agent Orange. Those activities left the area environmentally contaminated, and monitoring continues. The island is home to thriving communities of nesting seabirds and has significant marine biodiversity. USFWS teams c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dascyllus Albisella Juvenile
''Dascyllus'' is a genus of fish in the family Pomacentridae. They are usually commensals with corals.Youtube Creatures section, Damselfish - Author:Sublanding Fish020-06-19/ref> Species Currently, 11 recognized species are placed in this genus: * ''Dascyllus abudafur'' ( Forsskål, 1775) (Indian Ocean humbug) * '' Dascyllus albisella'' T. N. Gill, 1862 (Hawaiian dascyllus) * ''Dascyllus aruanus'' ( Linnaeus, 1758) (whitetail dascyllus) * ''Dascyllus auripinnis'' J. E. Randall & H. A. Randall, 2001 * ''Dascyllus carneus'' J. G. Fischer, 1885 (cloudy dascyllus) * ''Dascyllus flavicaudus'' H. A. Randall & G. R. Allen, 1977 (yellowtail dascyllus) * ''Dascyllus marginatus'' ( Rüppell, 1829) (marginate dascyllus) * ''Dascyllus melanurus'' Bleeker, 1854 (blacktail humbug) * ''Dascyllus reticulatus'' ( J. Richardon, 1846) (reticulate dascyllus) * '' Dascyllus strasburgi'' Klausewitz, 1960 (Strasburg's dascyllus) * ''Dascyllus trimaculatus'' ( Rüppell, 1829) (threespot dascyllu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foraging
Foraging is searching for wild food resources. It affects an animal's Fitness (biology), fitness because it plays an important role in an animal's ability to survive and reproduce. Optimal foraging theory, Foraging theory is a branch of behavioral ecology that studies the foraging behavior of animals in response to the environment where the animal lives. Behavioral ecologists use economic models and categories to understand foraging; many of these models are a type of optimal model. Thus foraging theory is discussed in terms of optimizing a payoff from a foraging decision. The payoff for many of these models is the amount of energy an animal receives per unit time, more specifically, the highest ratio of energetic gain to cost while foraging. Foraging theory predicts that the decisions that maximize energy per unit time and thus deliver the highest payoff will be selected for and persist. Key words used to describe foraging behavior include ''resources'', the elements necessary fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dascyllus
''Dascyllus'' is a genus of fish in the family Pomacentridae. They are usually commensals with corals.Youtube Creatures section, Damselfish - Author:Sublanding Fish 020-06-19/ref> Species Currently, 11 recognized species are placed in this genus: * '' Dascyllus abudafur'' ( Forsskål, 1775) (Indian Ocean humbug) * ''Dascyllus albisella'' T. N. Gill, 1862 (Hawaiian dascyllus) * '' Dascyllus aruanus'' (Linnaeus, 1758) (whitetail dascyllus) * '' Dascyllus auripinnis'' J. E. Randall & H. A. Randall, 2001 * ''Dascyllus carneus'' J. G. Fischer, 1885 (cloudy dascyllus) * '' Dascyllus flavicaudus'' H. A. Randall & G. R. Allen, 1977 (yellowtail dascyllus) * '' Dascyllus marginatus'' ( Rüppell, 1829) (marginate dascyllus) * '' Dascyllus melanurus'' Bleeker, 1854 (blacktail humbug) * ''Dascyllus reticulatus'' ( J. Richardon, 1846) (reticulate dascyllus) * '' Dascyllus strasburgi'' Klausewitz, 1960 (Strasburg's dascyllus) * '' Dascyllus trimaculatus'' ( Rüppell, 1829) (threespo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of Hawaii
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 fis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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