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Procambarus Lucifugus Lucifugus
''Procambarus lucifugus lucifugus'', known as the Withlocoochee light-fleeing cave crayfish, is one of two subspecies of the vampire crayfish (''Procambarus lucifugus''), along with '' Procambarus lucifugus alachua''. It is distinct from ''P. l. alachua'' due its lack of eyespots. Intergrades of the two ''P. lucifugus'' subspecies, ''P. l. alachua'' as well as '' P. erythrops'' and '' P. leitheuseri'' have been found to have little genetic differentiation, especially when compared to ''P. l. lucifugus'' which is distinct from all of those. It has been suggested that ''P. l. lucifugus'' may prove to be a different species, found only in two freshwater caves, the location of one of which is unknown. Distribution ''Procambarus lucifugus lucifugus'' is only found in subterranean waters of two caves, one of which is the Gum Cave, about 7 miles (11.2 km) southwest of Floral City in Citrus County, Florida. It is also known to occur in a cave in the Hernando County, northward to Mar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horton H
Horton may refer to: Places Antarctica * Horton Glacier, Adelaide Island, Antarctica * Horton Ledge, Queen Elizabeth Land, Antarctica Australia * Horton, Queensland, a town and locality in the Bundaberg Region * Horton River (Australia), in northern New South Wales Canada * Horton, Ontario, a township * Horton River (Canada), a tributary of the Beaufort Sea * Horton Township, Nova Scotia, an 18th-century township; see Wolfville United Kingdom * Horton Beach, Port Eynon Bay, Wales * Horton, Berkshire, a village and civil parish * Horton, Buckinghamshire, a hamlet of Ivinghoe * Horton or Horton by Malpas, Cheshire, a village and former civil parish * Horton, Dorset, a village and civil parish ** Horton Priory, its ruined religious house upon which the parish church was built * Horton, Gloucestershire, a village * Horton, Lancashire, a village and civil parish * Horton, Northamptonshire, a village * Horton, Blyth, Northumberland, a village * Horton, Chatton, a pair ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hernando County, Florida
Hernando County is a county located on the west central coast of the U.S. state of Florida. As of the 2020 census, the population was 194,515. Its county seat is Brooksville, and its largest community is Spring Hill. Hernando County is included in the Tampa- St. Petersburg- Clearwater, FL Metropolitan Statistical Area. As of 2005, Hernando was the 35th fastest-growing county in the country. History Around 1840, Fort DeSoto was established in present-day Hernando County in the northeast edge of present-day Brooksville to protect settlers in the area from Native Americans. Fort DeSoto became a small community center, trading post, and way station on the route to Tampa. Settlements started to grow near the fort beginning around 1845; two towns developed, Melendez and Pierceville, which would later merge to create Brooksville in 1856. Then encompassing a significantly larger area of west central Florida than it does today, Hernando County was officially established on Februa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustaceans Described In 1940
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from '' Stygotantulus stocki'' at , to the Japanese spider crab with a leg span of up to and a mass of . Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by their l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cave Crayfish
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorganism ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cambaridae
The Cambaridae are the largest of the four families of freshwater crayfish, with over 400 Species. Most of the species in the family are native the United States east of the Great Divide and Mexico, but fewer range north to Canada, and south to Guatemala and Honduras. Three live on the island of Cuba. The species in the genus '' Cambaroides'' are the only found outside North America, as they are restricted to eastern Asia. A few species, including the invasive ''Procambarus clarkii'' and ''Faxonius rusticus'', have been introduced to regions far outside their native range (both in North America and other continents). Conversely, many species have tiny ranges and are seriously threatened; a few are already extinct. A 2006 molecular study suggested that the family Cambaridae may be paraphyletic, with the family Astacidae Astacidae is a family of freshwater crayfish native to Europe and western North America. The family is made up of four extant (living) genera: The genera '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics ( morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interbreed
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridisation, which include genetic and morphological differences, differing times of fertility, mating behaviors and cues, and physiological rejection of sperm cells or the developing embryo. Some act before fertilization and others after it. Similar barriers exist in plants, with differences in flowering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marion County, Florida
Marion County is located in the northern portion of the U.S. state of Florida. As of the 2020 census, the population was 375,908. Its county seat is Ocala. Marion County comprises the Ocala, FL Metropolitan Statistical Area. it includes part of Ocala National Forest, which also extends into three other counties. History Native Americans Evidence of ancient indigenous cultures has been found in Marion County, as well as of the earliest encounter between European explorers and historic indigenous peoples. In 1976, an archaeological investigation found ancient artifacts in Marion County that appear to be the oldest in mainland United States. Excavations at an ancient stone quarry (on the Container Corporation of America site (8Mf154) in Marion County) yielded "crude stone implements". Thousands of pieces of chert were found at the site. These showed signs of extensive wear and were found in deposits below those holding Paleo-Indian artifacts. Thermoluminescence dating and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citrus County, Florida
Citrus County is a county located on the west central coast of the U.S. state of Florida. As of the 2020 census, the population was 153,843. Its county seat is Inverness, and its largest community is Homosassa Springs, Florida, Homosassa Springs. Citrus County comprises the Homosassa Springs, Florida Metropolitan Statistical Area. History The area covered by present-day Citrus County is thought to have been first occupied at least 10,000 years ago. About 2,500 years ago, mound-building Native Americans settled in the area and built the complex that now forms the Crystal River Archaeological State Park, Crystal River Archeological Site. The site was occupied for about 2,000 years. Why the complex was abandoned is currently unknown. Citrus County was created in 1887. The Citrus County area was formerly part of Hernando County. It was named for the county's citrus groves. Citrus production declined dramatically after Great Freeze, the "Big Freeze" of 1894-1895: today, citrus is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Procambarus Lucifugus
''Procambarus lucifugus'', the Florida cave crayfish, vampire crayfish, or light-fleeing cave crayfish, is a troglomorphic freshwater crayfish Crayfish are freshwater crustaceans belonging to the clade Astacidea, which also contains lobsters. In some locations, they are also known as crawfish, craydids, crawdaddies, crawdads, freshwater lobsters, mountain lobsters, rock lobsters, mu ... endemic to 20-25 occurrences (likely more) in an arc of caves 80 km long in 6 Florida counties. There are two sub-species described; *'' Procambarus lucifugus lucifugus'' *'' Procambarus lucifugus alachua'' The two sub-species are known to form intergrades in the range where they overlap. References Cambaridae Cave crayfish Freshwater crustaceans of North America Crustaceans described in 1940 Endemic fauna of Florida Taxa named by Horton H. Hobbs Jr. {{crayfish-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floral City, Florida
Floral City is a census-designated place (CDP) in Citrus County, Florida, United States. The population was 5,216 at the 2010 census. The community is home to the Floral City Heritage Hall Museum and hosts the Floral City Heritage Days the first weekend in December. The area has a history of phosphate mining and includes historic homes. Geography Floral City is located in southeastern Citrus County at 28°44′N 82°18′W (28.7407,-82.2954). It is bordered to the south by Hernando County. U.S. Route 41 runs through the community, leading north to Inverness, the Citrus County seat, and south to Brooksville. According to the United States Census Bureau, the CDP has a total area of , of which is land and , or 6.37%, is water. Floral City is located at the south end of Tsala Apopka Lake, a chain of lakes and wetlands that are part of the Withlacoochee River basin. The town is located at the 23 mile marker (middle) of the Withlacoochee State Trail, a linear state park that fol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fresh Water
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, 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. Fresh water is the water resource that is of the most and immediate use to humans. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of higher plants and most insects, amphibians, reptiles, mammals and birds need fresh water to surv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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