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Megalonaias Nervosa
''Megalonaias nervosa'', the washboard, is a freshwater mussel species in the family Unionidae. Description The shell is divided into two valves that are hinged. Shell is thick and rectangular in shape and can be compressed or inflated; umbos do not extend above the hinge line (Cicerello, R. and Schuster, G. 2003). The cardinal teeth are large and serrated, while the lateral teeth are long and curved. Shell color ranges from dark brown to black and is covered with small bumps and has fluted ridges: nacre is white to gray color. Life cycle ''Megalonaias nervosa'' mussels are sexually mature around 8 years of age, they are late tachytictic breeders. From July to October the males are mature, while they female contain eggs from August through October (Hollandbartels, L. 1993). ''Megalonaias nervosa'' males release sperm and the females collect the sperm through the incurrent siphon. The eggs are fertilized internally. ''Megalonaias nervosa'' has a parasitic larva stage called gloc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constantine Samuel Rafinesque
Constantine Samuel Rafinesque-Schmaltz (; 22 October 178318 September 1840) was a French early 19th-century polymath born near Constantinople in the Ottoman Empire and self-educated in France. He traveled as a young man in the United States, ultimately settling in Ohio in 1815, where he made notable contributions to botany, zoology, and the study of Mound Builders, prehistoric earthworks in North America. He also contributed to the study of ancient Mesoamerican languages, Mesoamerican linguistics, in addition to work he had already completed in Europe. Rafinesque was an eccentric and erratic genius. He was an autodidact, who excelled in various fields of knowledge, as a zoologist, botanist, writer and Polyglot (person), polyglot. He wrote prolifically on such diverse topics as anthropology, biology, geology, and linguistics, but was honored in none of these fields during his lifetime. Indeed, he was an outcast in the American scientific community and his submissions were automati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unionidae
The Unionidae are a Family (biology), family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or simply as unionids. The range of distribution for this family is world-wide. It is at its most diverse in North America, with about 297 recognised taxa, but China and Southeast Asia also support very diverse faunas. Freshwater mussels occupy a wide range of habitats, but most often occupy lotic waters, i.e. flowing water such as rivers, streams and creeks. Origin and early diversification The recent phylogenetic study reveals that the Unionidae most likely originated in Southeast and East Asia in the Jurassic, with the earliest expansions into North America and Africa (since the mid-Cretaceous) followed by the colonization of Europe and India (since the Paleocene). Life history Unionidae burrow into the substrate, with their posterior margins exposed. They pump water through the incurrent aperture (mollusc), aperture, o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepisosteus Osseus
The longnose gar (''Lepisosteus osseus''), also known as longnose garpike or billy gar, is a ray-finned fish in the family Lepisosteidae. The genus may have been present in North America for about 100 million years. References are made to gars being a primitive group of bony fish because they have retained some primitive features, such as a spiral valve intestine, but they are not primitive in the sense of not being fully developed. They have an olive brown to green, torpedo-shaped body armored with ganoid scales, elongated jaws that form a needle-like snout nearly three times the length of its head, and a row of numerous sharp, cone-shaped teeth on each side of the upper jaw. They typically inhabit freshwater lakes, brackish water near coastal areas, swamps, and sluggish backwaters of rivers and streams. They can breathe both air and water, which allows them to inhabit aquatic environments that are low in oxygen. Longnose gar are found along the east coasts of North and Ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micropterus Salmoides
The largemouth bass (''Micropterus nigricans'') is a carnivorous, freshwater, ray-finned fish in the Centrarchidae (sunfish) family, native to the eastern and central United States, southeastern Canada and northern Mexico. It is known by a variety of regional names, such as the widemouth bass, ''bigmouth bass'', ''black bass'', ''largie'', Potter's fish, Florida bass or ''Florida largemouth'', ''green bass'', bucketmouth bass, ''green trout'', growler, Gilsdorf bass, Oswego bass, LMB, and southern largemouth and northern largemouth. The largemouth bass, as it is known today, was first described by French naturalist Georges Cuvier in 1828. A recent study concluded that the correct scientific name for the Florida bass is ''Micropterus salmoides'', while the largemouth bass is ''Micropterus nigricans''. It is the largest species of the black bass, with a maximum recorded length of and an unofficial weight of . The largemouth bass is the state fish of Georgia and Mississipp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perca Flavescens
The yellow perch (''Perca flavescens''), commonly referred to as perch, striped perch, American perch or preacher is a freshwater perciform fish native to much of North America. The yellow perch was described in 1814 by Samuel Latham Mitchill from New York. It is closely related, and morphologically similar to the European perch (''Perca fluviatilis''); and is sometimes considered a subspecies of its European counterpart. Latitudinal variability in age, growth rates, and size have been observed among populations of yellow perch, likely resulting from differences in day length and annual water temperatures. In many populations, yellow perch often live 9 to 10 years, with adults generally ranging in length. The world record for a yellow by weight is , and was caught in May 1865 in Bordentown, New Jersey, by Dr. C. Abbot. It is the longest-standing record for a freshwater fish in North America. Description The yellow perch has an elongate, laterally compressed body with a subterm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepomis Megalotis
''Lepomis'' or true sunfish is a genus of North American freshwater fish from the family Centrarchidae in the order Centrarchiformes. The generic name ''Lepomis'' derives from the Greek ("scale") and ("cover", "plug", " operculum"). The genus' most recognizable species is perhaps the bluegill. Some ''Lepomis'' species can grow to a maximum overall length of , though most average around . Many species are sought by anglers as popular panfishes, and large numbers are bred and stocked in lakes, rivers, ponds and wetlands. They are widely distributed throughout the freshwater lakes and river tributaries of the United States and Canada, and several species have been translocated and flourished around the world, even becoming pests. Aquarium trade in some ''Lepomis'' species is prohibited in Germany for this reason. ''Lepomis'' species, among others, are sometimes referred to as bream, but the term is also used to refer explicitly to the unrelated European cypriniform fish of ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepomis Macrochirus
The bluegill (''Lepomis macrochirus''), sometimes referred to as "bream", "brim", "sunny", or, in Texas, "copper nose", is a species of North American freshwater fish, native to and commonly found in streams, rivers, lakes, ponds and wetlands east of the Rocky Mountains. It is the type species of the genus ''Lepomis'' (true sunfish), from the family Centrarchidae (sunfishes, crappies and black basses) in the order Centrarchiformes. Bluegills can grow up to long and about . While their color can vary from population to population, they typically have a very distinctive coloring, with deep blue and purple on the face and gill cover, dark olive-colored bands down the side, and a fiery orange to yellow belly. They are omnivorous and will consume anything they can fit in their mouth, but mostly feed on small aquatic insects and baitfishes. The fish are important prey for bass, other larger sunfish, northern pike and muskellunge, walleye, trout, herons, kingfishers, snapping turtles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percina Phoxocephala
''Percina phoxocephala'', the slenderhead darter, is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is found in North America in the central Ohio and Mississippi River basins, to northeastern South Dakota and the Lake Winnebago system in Wisconsin, and as far south as the Red River in eastern Oklahoma and northeast Texas, typically in small to medium size rivers. It is a colorful species, with an average length of . Males take on a deeper hue during the breeding season. It feeds on insect larvae and other small invertebrates, and spawns between April and June. It is a common fish with a very wide range and the International Union for Conservation of Nature has classified its conservation status as being of "least concern". Description Slenderhead darters are typically 6–9 centimeters long, and can reach 10 centimeters at times. They have a pointed s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percina Caprodes
The common logperch (''Percina caprodes''), sometimes simply known as the logperch, is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. Like other logperches, it has the typical vertical barring along the flank and a subterminal mouth. This is the most widespread logperch, commonly found in large parts of the eastern United States and Canada. Like other logperches, they inhabit clear, gravelly streams and lakes, reaching a maximum size of about and a maximum age of about 3 years. They play a key role in the reproduction of the snuffbox mussel (''Epioblasma triquetra''). Abstract The common logperch is a darter species naturally occurring as far north as the St. Lawrence River in Canada, as far west as the Great Lakes, and south throughout the Mississippi River down to the Rio Grande. The common logperch is also found as far west as California, where it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amblema Plicata
''Amblema plicata'', common name the threeridge, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae The Unionidae are a Family (biology), family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or simply as unionids. The range of distribution for this family is world-wide. It is a ..., the river mussels. References Unionidae Bivalves of North America Fauna of the Great Lakes region (North America) Bivalves described in 1817 {{Unionidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arcidens Confragosus
''Arcidens confragosus'' is a species of freshwater mussels in the family Unionidae, the river mussels. It is commonly known as the rock pocketbook, but also has many other common names: bastard, black pocketbook, grandmaw, queen, and rockshell. Distribution This species is widespread in central parts of the United States: it occurs in the Mississippi River drainage and in coastal rivers draining to the Gulf of Mexico, from the Colorado River in Texas east to the Mobile River System in Alabama. Description The shell is "" or pear-shaped, heavily sculptured, but fairly thin, up to long. The shell is green to dark brown. The nacre is white, iridescent Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear gradually to change colour as the angle of view or the angle of illumination changes. Iridescence is caused by wave interference of light in microstruc .... References Unionidae Bivalves of North America Freshwater animals of Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
