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Costero
The Guiana dolphin (''Sotalia guianensis''), also known as the estuarine dolphin or costero, is a dolphin found in the coastal and estuary waters to the north and east of South America, and east of Central America. It is a member of the oceanic dolphin family (Delphinidae). English name During its 2008 Annual Meeting in Santiago, Chile, as proposed by Flores et al. (2008), the Scientific Committee of the International Whaling Commission (IWC) endorsed "Guiana dolphin" as the common English name for (''Sotalia guianensis'') in its IWC List of Recognized Cetacean Species (LRCS). Following this endorsement, Flores and colleagues also made the case for the adoption of the English name in thLatin American Journal of Aquatic Mammals Description The Guiana dolphin is frequently described as similar to the bottlenose dolphin in appearance, but it is typically smaller, at only up to 2.1 m (6.9 ft) in length. Individuals are light to bluish grey in coloration on their back and s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Cetaceans
Cetacea is an infraorder that comprises the 94 species of whales, dolphins, and porpoises. It is divided into toothed whales (Odontoceti) and baleen whales (Mysticeti), which diverged from each other in the Eocene some 50 mya (unit), million years ago (mya). Cetaceans are descended from land-dwelling hoofed mammals, and the now extinct archaeocetes represent the several transitional phases from terrestrial to completely aquatic. Historically, cetaceans were thought to have descended from the wolf-like Mesonychia, mesonychians, but cladistic analyses confirm their placement with even-toed ungulates in the order Cetartiodactyla. Whale populations were drastically reduced in the 20th century from intensive whaling, which led to a moratorium on hunting by the International Whaling Commission in 1982. Smaller cetaceans are at risk of accidentally getting caught by fishing vessels using, namely, seine fishing, drift netting, or gill netting operations. Conventions The following is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sotalia Clicks
The dolphin genus ''Sotalia'' is considered to have two member species with the classification of ''Sotalia guianensis'' as a distinct species from ''Sotalia fluviatilis'' in 2007. This was a result of recent morphometric analyses, as well as mitochondrial DNA analysis.Caballero S, Trujillo F, Vianna JA, Barrios-Garrido H, Montiel MG, Beltran-Pedreros S, Marmontel M, Santos MC, Rossi-Santos M, Santos FR, Baker CS (2007) Taxonomic status of the genus Sotalia: species level ranking for 'tucuxi' (Sotalia fluviatilis) and 'costero' (Sotalia guianensis) dolphins. Mar Mamm Sci 23: 358-386. Members of this genus are found in the Atlantic and Caribbean coasts of Central and South America as well as in the Amazon River and most of its tributaries. Member species * ''Sotalia fluviatilis'' (Gervais & Deville, 1853), Tucuxi * ''Sotalia guianensis The Guiana dolphin (''Sotalia guianensis''), also known as the estuarine dolphin or costero, is a dolphin found in the coastal and estuary wat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre-Joseph Van Beneden
Pierre-Joseph Van Beneden FRS FRSE FGS FZS (19 December 1809 – 8 January 1894) was a Belgian zoologist and paleontologist. He has been credited with introducing the terms " mutualism" and "commensalism" into biology in 1875 and 1876 respectively. Life Born in Mechelen, First French Empire, he studied medicine at the State University of Leuven and studied zoology in Paris under Georges Cuvier (1769–1832). In 1831, he became curator at the natural history museum in Leuven, and from 1836 until 1894, was a professor of zoology at the Catholic University of Leuven. In 1842, he became a member of the ''Académie des sciences de Belgique'', becoming its President in 1881. In 1875, he became a foreign member of the Royal Society of London, and in 1884, an Honorary Fellow of the Royal Society of Edinburgh. In 1843, he established one of the world's first marine laboratories and aquariums. He was the father of biologist Edouard van Beneden (1846–1910). Pierre-Joseph van Beneden died ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electroreceptive Animals
Electroreception and electrogenesis are the closely related biological abilities to perceive electrical stimuli and to generate electric fields. Both are used to locate prey; stronger electric discharges are used in a few groups of fishes, such as the electric eel, to stun prey. The capabilities are found almost exclusively in aquatic or amphibious animals, since water is a much better conductor of electricity than air. In passive electrolocation, objects such as prey are detected by sensing the electric fields they create. In active electrolocation, fish generate a weak electric field and sense the different distortions of that field created by objects that conduct or resist electricity. Active electrolocation is practised by two groups of weakly electric fish, the order Gymnotiformes (knifefishes) and family Mormyridae (elephantfishes), and by the monotypic genus ''Gymnarchus'' (African knifefish). An electric fish generates an electric field using an electric organ, modified ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rio De Janeiro
Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the Americas, sixth-most-populous city in the Americas. Founded in 1565 by the Portuguese people, Portuguese, the city was initially the seat of the Captaincy of Rio de Janeiro, a domain of the Portuguese Empire. In 1763, it became the capital of the State of Brazil, a List of states of the Portuguese Empire, state of the Portuguese Empire. In 1808, when the Transfer of the Portuguese Court to Brazil, Portuguese Royal Court moved to Brazil, Rio de Janeiro became the seat of the court of Queen Maria I of Portugal. She subsequently, under the leadership of her son the prince regent John VI of Portugal, raised Brazil to the dignity of a kingdom, within the United Kingdom of Portugal, Brazil and the Algarves, United Kingdom of Portugal, Brazil, and Algar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guanabara Bay
Guanabara Bay (, , ) is an oceanic bay in Southeast Brazil in the state of Rio de Janeiro (state), Rio de Janeiro. On its western shore lie the cities of Rio de Janeiro (city), Rio de Janeiro and Duque de Caxias, Rio de Janeiro, Duque de Caxias, and on its eastern shore are the cities of Niterói and São Gonçalo, Rio de Janeiro, São Gonçalo. Four other municipalities surround the bay's shores. Guanabara Bay is the second largest bay in area in Brazil (after the All Saints' Bay), at , with a perimeter of . Guanabara Bay is long and wide at its maximum. Its wide mouth is flanked at the eastern tip by the Pico do Papagaio (Parrot's Peak) and the western tip by Sugarloaf Mountain, Rio de Janeiro, Pão de Açúcar (Sugar Loaf). The name Guanabara comes from the Tupi language, ''goanã-pará'', from ''gwa'' "bay", plus ''nã'' "similar to" and ''ba'ra'' "sea". Other glosses include ''hidden water'', ''lagoon of the sea'', and ''bosom of the sea''. History Guanabara Bay was firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seine Fishing
Seine fishing (or seine-haul fishing; ) is a method of fishing that employs a surrounding net, called a seine, that hangs vertically in the water with its bottom edge held down by weights and its top edge buoyed by floats. Seine nets can be deployed from the shore as a beach seine, or from a boat. Boats deploying seine nets are known as Fishing vessel#Seiners, seiners. Two main types of seine net are deployed from seiners: ''purse seines'' and ''Danish seines''. A seine differs from a Gillnetting, gillnet, in that a seine encloses fish, where a gillnet directly snares fish. Etymology The word ''seine'' has its origins in the Old English ''segne'', which entered the language via Latin ''sagena'', from the original Greek σαγήνη ''sagēnē'' (a drag-net). History Seines have been used widely in the past, including by Stone Age societies. For example, the Māori people, Māori used large canoes to deploy seine nets which could be over a kilometer long. The nets were woven fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gillnetting
Gillnetting is a fishing method that uses gillnets: vertical panels of netting that hang from a line with regularly spaced floaters that hold the line on the surface of the water. The floats are sometimes called "corks" and the line with corks is generally referred to as a "cork line." The line along the bottom of the panels is generally weighted. Traditionally this line has been weighted with lead and may be referred to as "lead line." A gillnet is normally set in a straight line. Gillnets can be characterized by mesh size, as well as colour and type of filament from which they are made. Fish may be caught by gillnets in three ways: # Wedged – held by the mesh around the body. # Gilled – held by mesh slipping behind the opercula. # Tangled – held by teeth, spines, maxillaries, or other protrusions without the body penetrating the mesh. Most fish have gills. A fish swims into a net and passes only part way through the mesh. When it struggles to free itself ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bonn Convention
The Convention on the Conservation of Migratory Species of Wild Animals, also known as the Convention on Migratory Species (CMS) or the Bonn Convention, is an international agreement that aims to conserve migratory species throughout their ranges. The agreement was signed under the auspices of the United Nations Environment Programme and is concerned with conservation of wildlife and habitats on a global scale."Amendments, done at Bergen on 25 November 2011,to Appendices I and II to the Convention on the Conservation of Migratory Species of Wild Animals (Bonn, 23 June 1979) – ATS 10 of 2012" Australasian Legal Information Institute, Australian T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infanticide
Infanticide (or infant homicide) is the intentional killing of infants or offspring. Infanticide was a widespread practice throughout human history that was mainly used to dispose of unwanted children, its main purpose being the prevention of resources being spent on weak or disabled offspring. Unwanted infants were usually abandoned to die of exposure, but in some societies they were deliberately killed. Infanticide is generally illegal, but in some places the practice is tolerated, or the prohibition is not strictly enforced. Most Stone Age human societies routinely practiced infanticide, and estimates of children killed by infanticide in the Mesolithic and Neolithic eras vary from 15 to 50 percent. Infanticide continued to be common in most societies after the historical era began, including ancient Greece, Roman Empire, ancient Rome, the Phoenicians, ancient China, ancient Japan, Pre-Islamic Arabia, early modern Europe, Aboriginal Australians, Aboriginal Australia, Indigenous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infanticide (zoology)
In animals, infanticide involves the intentional killing of young offspring by a mature animal of the same species. Animal infanticide is studied in zoology, specifically in the field of ethology. Ovicide is the analogous destruction of eggs. The practice has been observed in many species throughout the animal kingdom, especially primates ( primate infanticide) but including microscopic rotifers, insects, fish, amphibians, birds and mammals. Infanticide can be practiced by both males and females. Infanticide caused by sexual conflict has the general theme of the killer (often male) becoming the new sexual partner of the victim's parent, which would otherwise be unavailable. This represents a gain in fitness by the killer, and a loss in fitness by the parents of the offspring killed. This is a type of evolutionary struggle between the two sexes, in which the victim sex may have counter-adaptations that reduce the success of this practice. It may also occur for other reasons, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Universidade Federal Rural Do Rio De Janeiro
The Federal Rural University of Rio de Janeiro (, UFRRJ) is a public university located in Seropédica in the State of Rio de Janeiro, Brazil. It possesses the largest campus among Latin American universities and is known for being the first university to offer agriculture related courses in Brazil. In the 2019 Folha de S.Paulo, ''Folha de São Paulo'' rankings, UFRRJ was ranked 35th in Brazil, with its programs in veterinary medicine and animal science in the top 10. History Founded in October 20, 1910, by then president of the republic Nilo Peçanha, the College of Agriculture and Veterinary Medicine (, ESAMV) laid the foundations of agricultural education in Brazil, and began operating in 1913. In 1934, the ESAMV was split into three institutions: the National School of Agriculture, National School of Veterinary Medicine and the National School of Chemistry (incorporated in 1937 by the University of Brazil, later renamed the Federal University of Rio de Janeiro). These insti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
