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Rainbow Goodeid
The rainbow goodeid (''Characodon lateralis'') is a species of critically endangered freshwater fish in the family Goodeidae, and are endemic to Mexico. Specifically, they are found in shallow springs and ponds in the Durango and Coahuila area. They were first identified in 1866 by Albert Günther. Related species There are only three species known in the genus ''Characodon''. * Genus Characodon ** Bold Characodon ''(C. audax)'' ** Parras Characodon (''C. garmani)'' -extinct ** Rainbow Goodeid ''(C. lateralis)'' Anatomy The rainbow goodeid is a small sexually dimorphic fish, averaging 42mm in size for males and 65mm for females. The phenotype exhibited varies greatly due to the separation of its populations. Head shape is the greatest variant between groups. Males are generally more colorful and larger-bodied, showing a blue or green body with red accents and a silver luster. They exhibit a modified anal fin (andropodium), used for aiding sperm transfer in internal fertiliz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albert C
Albert may refer to: Companies * Albert Computers, Inc., a computer manufacturer in the 1980s * Albert Czech Republic, a supermarket chain in the Czech Republic * Albert Heijn, a supermarket chain in the Netherlands * Albert Market, a street market in The Gambia * Albert Music, an Australian music company now known as Alberts ** Albert Productions, a record label * Albert (organisation), an environmental organisation concerning film and television productions Entertainment * Albert (1985 film), ''Albert'' (1985 film), a Czechoslovak film directed by František Vláčil * ''Albert'' (2015 film), a film by Karsten Kiilerich * Albert (2016 film), ''Albert'' (2016 film), an American TV movie * Albert (album), ''Albert'' (album), by Ed Hall, 1988 * Albert (short story), "Albert" (short story), by Leo Tolstoy * Albert (comics), a character in Marvel Comics * Albert (Discworld), Albert (''Discworld''), a character in Terry Pratchett's ''Discworld'' series * Albert, a character in Dario A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
D-loop
In molecular biology, a displacement loop or D-loop is a DNA structure where the two strands of a double-stranded DNA molecule are separated for a stretch and held apart by a third strand of DNA. An R-loop is similar to a D-loop, but in that case the third strand is RNA rather than DNA. The third strand has a base sequence which is complementary to one of the main strands and pairs with it, thus displacing the other complementary main strand in the region. Within that region the structure is thus a form of triple-stranded DNA. A diagram in the paper introducing the term illustrated the D-loop with a shape resembling a capital "D", where the displaced strand formed the loop of the "D". D-loops occur in a number of particular situations, including in DNA repair, in telomeres, and as a semi-stable structure in mitochondrial circular DNA molecules. In mitochondria Researchers at Caltech discovered in 1971 that the circular mitochondrial DNA from growing cells included a sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 1866
A fish (: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish, the latter including all living cartilaginous and bony fish, as well as the extinct placoderms and acanthodians. In a break to the long tradition of grouping all fish into a single class (Pisces), modern phylogenetics views fish as a paraphyletic group. Most fish are cold-blooded, their body temperature varying with the surrounding water, though some large active swimmers like white shark and tuna can hold a higher core temperature. Many fish can communicate acoustically with each other, such as during courtship displays. The study of fish is known as ichthyology. The earliest fish appeared during the Cambrian as small filter feeders; they continued to evolve through the Paleozoic, diversifying into many forms. The earliest fish wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Of Mexico
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mineral-rich waters, such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of vascular plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh water is the water resource that is of the most and immediate use to humans. Fresh water is not alway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morelia
Morelia (; from 1545 to 1828 known as Valladolid; Otomi language, Otomi: ) is a city and municipal seat of the municipalities of Mexico, municipality of Morelia in the north-central part of the state of Michoacán in central Mexico. It is both the most populous and most densely populated municipality in Michoacán. The city is in the Guayangareo Valley and is the capital and largest city of the state. The main pre-Hispanic cultures here were the Purépecha people, Purépecha and the Matlatzinca people, Matlatzinca, but no major cities were founded in the valley during this time. The New Spain, Spanish took control of the area in the 1520s. The Spanish under Viceroy Antonio de Mendoza founded a settlement here in 1541 with the name of Valladolid, which became rival to the nearby city of Pátzcuaro for dominance in Michoacán. In 1580, this rivalry ended in Valladolid's favor, and it became the capital of the Viceroy, viceregal province. After the Mexican War of Independence, the cit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Swordtail
The green swordtail (''Xiphophorus hellerii'') is a species of freshwater/brackish fish in family Poeciliidae of order Cyprinodontiformes. A live-bearer, it is closely related to the southern platyfish or 'platy' (''X. maculatus'') and can crossbreed with it. It is native to an area of North and Central America stretching from Veracruz, Mexico, to northwestern Honduras. Description The male green swordtail grows to a maximum overall length of and the female to . The name 'swordtail' is derived from the elongated lower lobe of the male's caudal fin (tailfin). Sexual dimorphism is moderate, with the female being larger than the male, but lacking the 'sword'. The wild form is olive green in color, with a red or brown lateral stripe and speckles on the dorsal and, sometimes, caudal fins. The male's 'sword' is yellow, edged in black below. Captive breeding has produced many color varieties, including black, red, and many patterns thereof, for the aquarium hobby. All varietie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nile Tilapia
The Nile tilapia (''Oreochromis niloticus'') is a species of tilapia, a cichlid occurring naturally in parts of Africa (such as its namesake Nile River) and the Levant, though numerous introduced populations exist outside its natural range. This current wide range is caused by its high commercial value as a food fish, where it is marketed as mango fish (not to be confused with the mango tilapia, or ''Sarotherodon galilaeus''), nilotica, or boulti, along with many other names, both local and foreign. Due to its value, the Nile tilapia is widely aquacultured across the world due to its hardiness and a mode of reproduction conducive to mass rearing, namely mouthbrooding, and various attempts have been made to increase production yields, including hybridization with other tilapias. Description The Nile tilapia reaches up to in length, and can exceed . As typical of tilapia, males reach a larger size and grow faster than females. Wild, natural-type Nile tilapias are brown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Procambarus Clarkii
''Procambarus clarkii'', known variously as the red swamp crayfish, Louisiana crawfish or mudbug, is a species of cambarid crayfish native to freshwater bodies of northern Mexico, and southern and southeastern United States, but also introduced elsewhere (both in North America and other continents), where it is often an invasive pest. Appearance ''P. clarkii'' is typically dark red, with long claws and head, small or no spines on the sides of its carapace just below the head, and rows of bright red bumps on the front and side of the first leg. Range and range expansion The native range of ''P. clarkii'' is from northern Mexico and far southeastern New Mexico, through the Gulf States to the Florida Panhandle, as well as inland north through the Mississippi Basin to southern Illinois. It has also been introduced, sometimes deliberately, outside its natural range to countries in Asia, Africa, Europe and elsewhere in the Americas. In northern Europe, the populations are self-m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
El Salto, Jalisco
El Salto is a city, and the surrounding municipality of the same name, in the central region of the Mexican state of Jalisco. The municipality covers a surface area of with a population of 232,852. It is surrounded, in a clockwise direction from the north, by the municipalities of Tlaquepaque, Tonalá, Juanacatlán, and Tlajomulco de Zúñiga. It was created on 22 December 1943, with its excision from the municipality of Juanacatlán. Localities History In 1530, the Spanish conqueror of Mexico, Hernán Cortés, commissioned Nuño de Guzmán to conquer "inland". This part to the conquest of the kingdom of Michoacán, venturing to conquer new lands was launched towards the West. Thus, on 20 January 1530, the expedition crosses the Lerma river through Cuitzeo and walking northwest, appears in front of Tonalá on 24 March, taking possession of the village, one of the largest in the region, leaving the entire region subjugated to the Spanish kingdom. The next day, 25 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
