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Lake Herring
''Coregonus artedi'', commonly known as the cisco, is a North American species of freshwater whitefish in the family Salmonidae. The number of species and definition of species limits in North American ciscoes is a matter of debate. Accordingly, ''Coregonus artedi'' may refer either in a narrow sense to one of the several types of cisco found e.g. in the Great Lakes, or in a broad sense to the complex of all ciscoes in continental North American lakes, ''Coregonus artedi'' sensu lato. ''Coregonus artedi'', narrow sense Narrowly defined, ''Coregonus artedi'' is known variously with the common names cisco, northern cisco, lake herring, chub or tullibee and its Anishinaabe name ''Odoonibiins''. It is a pelagic fish occurring in the midwater zone of cold water lakes in North America. In the northern and western parts of its range it is also found in large rivers. This species occasionally grows as large as 40 cm and 2.3 kg (five pounds), but is more commonly 28 to 38& ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Alexandre Lesueur
Charles Alexandre Lesueur (1 January 1778 in Le Havre – 12 December 1846 in Le Havre) was a French naturalist, artist, and explorer. He was a prolific natural-history collector, gathering many type specimens in Australia, Southeast Asia, and North America, and was also responsible for describing numerous species, including the spiny softshell turtle ('' Apalone spinifera''), smooth softshell turtle ('' A. mutica''), and common map turtle ('' Graptemys geographica''). Both Mount Lesueur and Lesueur National Park in Western Australia are named in his honor. Early life Charles Alexandre Lesueur was born on January 1, 1778, to Jean-Baptiste Denis Lesueur and Charlotte Thieullent. Charlotte died when Charles was sixteen years old, and Charles' maternal grandmother took care of him and his siblings. Charles attended the Collège du Havre and possibly the Ecole publique des mathématiques et d'hydrographie. He was in military service in a cadet battalion at age fifteen and w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rainbow Smelt
The rainbow smelt (''Osmerus mordax'') is a North American species of fish of the family Osmeridae. Walleye, trout, and other larger fish prey on these smelt. The rainbow smelt prefer juvenile ciscoes, zooplankton such as calanoid copepods ('' Leptodiaptomus ashlandi'', '' L. minutus'', '' L. sicilis''), and other small organisms, but are aggressive and will eat almost any fish they find. They are anadromous spring spawners and prefer clean streams with light flow and light siltation. The rainbow smelt face several barriers. They are weak swimmers and struggle to navigate fish ladders preventing them from making it past dams to the headwater streams where they spawn. The rise in erosion and dams helped to decimate the smelt population in the 1980s. There are currently plans to try to reduce damming and to help control erosion. Description The body of the rainbow smelt is slender and cylindrical. It has a silvery, pale green back and is iridescent purple, blue, and pink on the si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Complex
In biology, a species complex is a group of closely related organisms that are so similar in appearance and other features that the boundaries between them are often unclear. The taxa in the complex may be able to hybridize readily with each other, further blurring any distinctions. Terms that are sometimes used synonymously but have more precise meanings are cryptic species for two or more species hidden under one species name, sibling species for two (or more) species that are each other's closest relative, and species flock for a group of closely related species that live in the same habitat. As informal taxonomic ranks, species group, species aggregate, macrospecies, and superspecies are also in use. Two or more taxa that were once considered conspecific (of the same species) may later be subdivided into infraspecific taxa (taxa within a species, such as bacterial strains or plant varieties), that is complex but it is not a species complex. A species complex is in most ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ives Lake Cisco
The Ives Lake cisco (''Coregonus hubbsi'') is a freshwater whitefish known to inhabit a single inland lake in the Upper Peninsula of Michigan. The species was last observed in 1983, although there is disagreement on whether it is distinct from ''Coregonus artedi''. This taxon has been found only in Ives Lake, a lake in the Huron Mountains. The lake encompasses a radius of less than . Discovery With the cooperation of the Huron Mountain Club, specimens were first collected by Carl Leavitt Hubbs and Walter Koelz in 1924 and 1927. Koelz published their discovery through the University of Michigan in 1929, and designated the taxon as ''Leucichthys hubbsi''. Koelz found the stream draining Ives Lake quickly dropped over , and postulated that the stream's steepness had prevented faunal interchange since the time of Lake Algonquin. Description Walter Koelz described ''Coregonous hubbsi'' in a 1929 publication titled "Leucichthys hubbsi, a new cisco, From Ives Lake, Marquette ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shortjaw Cisco
The shortjaw cisco (''Coregonus zenithicus'') is a North-American freshwater whitefish in the salmon family. Adult fish range to about in length and are silver, tinged with green above and paler below. One of the members of the broader ''Coregonus artedi'' complex of ciscoes, it is distributed widely in the deeper lakes of Canada, but populations in the Great Lakes have been declining and it is no longer present in Lakes Michigan, Huron, and Erie. It feeds mainly on crustaceans and insect larvae and spawns in the autumn on the lake bed. It is part of the important cisco (chub) fishery in the Great Lakes. The International Union for Conservation of Nature has rated its conservation status as " vulnerable". Shortjaw cisco have however evolved from the cisco ''Coregonus artedi'' independently in different lakes and different parts of the range, and conservation assessments therefore should be made on a lake-wise rather than range-wide basis.Julie Turgeon, Scott M. Reid, Audrey Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shortnose Cisco
The shortnose cisco (''Coregonus reighardi'') is a North American freshwater whitefish in the salmon family Salmonidae. One of the members of the broader ''Coregonus artedi'' species complex of ciscoes, it is native to the Great Lakes of Canada and the United States. Its population has been declining and it has disappeared from some of its earlier haunts. The last reported population was restricted to Georgian Bay off Lake Huron in Canada. It is thought that declines in the population of this fish may be linked with the arrival of the sea lamprey (''Petromyzon marinus''), in the Great Lakes. The International Union for Conservation of Nature has rated the conservation status of this fish as " critically endangered", and possibly extinct. Description Reaching a maximum recorded length of 36 cm (14 in) and a maximum recorded weight of 540 g (1 lb 3 oz), the shortnose cisco is distinguished from the other whitefishes by its thicker body (nearly circular in cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blackfin Cisco
The blackfin cisco (''Coregonus nigripinnis'') was a North American salmonid fish in the freshwater whitefish sub-family Coregoninae. This silvery, deep-bodied fish with black fins, large eyes, a blunt snout and a terminal mouth, was one of the largest forms of ciscoes. The blackfin cisco used to inhabit the Great Lakes of North America until recently, but has been reported to have gone extinct. The blackfin cisco is a member of the '' C. artedi'' complex, whose taxonomy has not yet been resolved, and it may not represent a valid species. Taxonomy The species was first mentioned by P.R. Hoy 1872, attributing Gill as the species authority, but Gill's manuscript was never published. The first valid description of this species is attributed to James Wood Milner in 1874. The taxonomy of ''C. nigripinnis'', along with other ciscoes in the '' C. artedi'' complex, is unresolved. ''C. nigripinnis'' was recognized by W.N. Koelz in 1929 to consist of four subspecies, but he had difficu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kiyi
The kiyi (''Coregonus kiyi'') is a species of freshwater whitefish, a deepwater cisco, endemic to the Great Lakes of North America. It previously inhabited Lake Superior, Lake Michigan, Lake Huron and Lake Ontario, but is now believed to persist only in Lake Superior where it is common. The various deepwater ciscos are also called chubs (not to be confused with the various species of Cyprinidae also called chubs). The kiyi is part of the large group of related northern ciscos known as the ''Coregonus artedi'' complex. Description The kiyi is one of the smaller ciscos. Adult kiyi average approximately in total length and in weight. Individuals can reach more than . They are silvery pink or purple iridescence, darker on the back and white on the belly. They may have a dark tip on the lower jaw. They have a large head and a conspicuous, large eye. Subspecies Two subspecies of kiyi have been recognised based on morphological characteristics and distribution. The nominate su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coregonus Hoyi
''Coregonus hoyi'', also known as the bloater, is a species or form of freshwater whitefish in the family Salmonidae. It is a silvery-coloured herring-like fish, long. It is found in most of the Great Lakes and in Lake Nipigon, and inhabits underwater slopes. This fish is not to be confused with the extinct deepwater cisco (''Coregonus johannae''), a large fish that shared a common name with the bloater. Description The bloater is a small, silvery-coloured whitefish with a pink and purple iridescence. It has a greenish tinge above, and a whitish belly. It is very similar to the kiyi, from which it may be distinguished by its lighter upper lip and smaller eye. Its body is deepest at its middle, it has small and pale fins, and it has 40–47 long gill rakers. The discoverer of the bloater, P. R. Hoy, thought it to be "the most beautiful of the white fish". It reaches a maximum total length of and commonly is . Distribution The bloater is native to all of the Great Lakes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deepwater Cisco
The deepwater cisco (''Coregonus johannae'') was one of the largest ciscoes in the Great Lakes. Its average length was 30 cm (12 inches) and it was about 1.0 kilogram (2.2 pounds) in weight. Occurring only in Lakes Huron and Michigan, and inhabiting waters between 50 and 150 metres deep, it was difficult to distinguish from other ciscoes and was possibly the same species as the shortjaw cisco (''Coregonus zenithicus''). The deepwater cisco was distinguished by usually having fewer than 33 gill rakers, relatively long pectoral fins, and unpigmented jaws. It was a silvery colour with a pink or purple lustre and a green or blue back. It spawned in August and September, earlier than most other ciscoes. Not much is known about its specific behaviors. Its diet consisted of Mysis relicta, fingernail clams, and various aquatic insects. Because of its large size, the deepwater cisco was heavily fished commercially. The main reasons for its extinction was a combination of competition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Narrow Sense
Narrow may refer to: * The Narrow, rock band from South Africa * Narrow banking, proposed banking system that would eliminate bank runs and the need for a deposit insurance * narrow gauge railway, a railway that has a track gauge narrower than the 4 ft 8½ in of standard gauge railways * Narrow vs wide format, a style of displaying tabular data * Narrowboat or narrow boat, a boat of a distinctive design made to fit the narrow canals of Great Britain * ''Narrow'' (album), a 2012 album by Austrian musical project Soap&Skin * "Narrow", a song by Mayday Parade from '' Black Lines'' See also * Narro (other) * The Narrows (other) The Narrows is a strait in New York City separating Brooklyn and Staten Island. The Narrows may also refer to: Places Antarctica * The Narrows (Antarctica), a strait Australia *The Narrows, an isthmus providing the only land access to Queensclif ... * Narrowing (other) * * {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sensu
''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular concept, but it also appears in expressions that indicate the convention or context of the usage. Common qualifiers ''Sensu'' is the ablative case of the noun ''sensus'', here meaning "sense". It is often accompanied by an adjective (in the same case). Three such phrases are: *''sensu stricto'' – "in the strict sense", abbreviation ''s.s.'' or ''s.str.''; *''sensu lato'' – "in the broad sense", abbreviation ''s.l.''; *''sensu amplo'' – "in a relaxed, generous (or 'ample') sense", a similar meaning to ''sensu lato''. Søren Kierkegaard uses the phrase ''sensu eminenti'' to mean "in the pre-eminent r most important or significantsense". When appropriate, comparative and superlative adjectives may also be used to convey the meaning of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
