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Trygonoptera
''Trygonoptera'' is a genus of round rays endemic to the waters around Australia. Müller and Henle defined ''Trygonoptera'' in 1841. It has often been considered synonymous with ''Urolophus'', but this has been refuted by recent studies. ''Trygonoptera'' can be distinguished from ''Urolophus'' in that the outer rims of its nostrils are enlarged into broad, flattened lobes; the two also differ in aspects of the skeleton. Species There are currently six recognized species in this genus: * ''Trygonoptera galba'' Last & Yearsley, 2008 (Yellow shovelnose stingaree) * ''Trygonoptera imitata'' Yearsley, Last & M. F. Gomon, 2008 (Eastern shovelnose stingaree) * ''Trygonoptera mucosa'' Whitley, 1939 (Western shovelnose stingaree) * '' Trygonoptera ovalis'' Last & M. F. Gomon, 1987 (Striped stingaree) * ''Trygonoptera personata'' Last A last is a mechanical form shaped like a human foot. It is used by shoemakers and cordwainers in the manufacture and repair of shoes. Lasts typic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trygonoptera Mucosa
The western shovelnose stingaree (''Trygonoptera mucosa'') is a common species of stingray in the family Urolophidae, inhabiting shallow sandy flats and seagrass beds off southwestern Australia from Perth to Gulf St Vincent. Growing to long, this small ray has a rounded pectoral fin disc and a blunt, broadly triangular snout. Its nostrils have enlarged lobes along the outer rims and a skirt-shaped curtain of skin between them with a strongly fringed posterior margin. Its tail ends in a lance-like caudal fin and lacks dorsal fins and lateral skin folds. This species is colored grayish to brownish above, sometimes with lighter and darker spots, and pale below, sometimes with darker marginal bands and blotches. Sedentary polychaete worms are by far the most important food source of the western shovelnose stingaree; other benthic invertebrates and the odd bony fish may also be taken. Reproduction is aplacental viviparous, with females bearing one or two pups annually in la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trygonoptera Testacea
The common stingaree (''Trygonoptera testacea'') is a species of stingray in the family Urolophidae. The most abundant ray in inshore waters off eastern Australia, it generally inhabits estuaries, sandy flats, and rocky reefs from the shore to a depth of . This plain brownish to grayish species has a rounded pectoral fin disc with a broadly triangular snout. Its nostrils have enlarged lobes on their outer margins and a skirt-shaped curtain of skin with a fringed posterior margin between them. Its tail bears a small dorsal fin before the stinging spine, and terminates in a leaf-shaped caudal fin. This ray can grow to long. When young, the common stingaree preys almost entirely on shrimp; as it matures it comes to feed predominantly on polychaete worms. It is aplacental viviparous, with the developing embryos sustained by histotroph ("uterine milk") produced by the mother. Females usually bear two pups at a time. The common stingaree contributes substantially to the bycatch of c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trygonoptera Imitata
The eastern shovelnose stingaree (''Trygonoptera imitata'') is a species of stingray in the family Urolophidae, endemic to coastal waters off southeastern Australia, excluding Tasmania. This species has a rounded pectoral fin disc wider than long, a fleshy snout forming an obtuse angle, and a relatively short tail terminating in a caudal fin. Its nostrils have prominent lobes on their outside rims and a skirt-shaped curtain of skin with a strongly fringed trailing margin between them. The dorsal coloration is mostly plain brownish, occasionally with a scattering of darker and/or lighter spots. One of the larger stingarees, it can grow to at least long. Preying mainly on polychaete worms, the eastern shovelnose stingaree is rather common in very shallow, coastal bays over fine substrates, though it does range to a depth of or more. Reproduction is aplacental viviparous, with the females supplying their unborn young with histotroph (" uterine milk"). The gestation period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trygonoptera Personata
The masked stingaree (''Trygonoptera personata'') is a common species of stingray in the family Urolophidae, endemic to southwestern Australia. It prefers moderately deep areas of sand or seagrass some distance from shore, though it can be found in very shallow water or to a depth of . The masked stingaree can be identified by the two large, dark blotches on the upper surface of its rounded pectoral fin disc, one of which encompasses its eyes like a mask. The outer rims of its nostrils are expanded into prominent lobes, while between the nostrils is a skirt-like curtain of skin with a deeply fringed trailing margin. Its tail bears a small dorsal fin just before the stinging spine, and end in a leaf-like caudal fin. This species grows up to across. The diet of the masked stingaree consists primarily of polychaete worms and crustaceans, with a general shift from the latter to the former as the ray ages. It is aplacental viviparous, with females typically bearing one pup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trygonoptera Ovalis
The striped stingaree (''Trygonoptera ovalis'') is a common but little-known species of stingray in the family Urolophidae, endemic to shallow, inshore waters off southwestern Australia. Reaching long, this species is characterized by an oval, grayish to brownish disc with darker mask-like markings around the eyes and paired blotches at the center of the disc that are extended posteriorly into horizontal lines. Its nostrils have enlarged lobes on the outer margins and a skirt-shaped curtain of skin with a deeply fringed trailing margin in between. Its tail terminates in a relatively large leaf-shaped caudal fin, and bears a small dorsal fin just before the stinging spine. The rounded, flexible disc of the striped stingaree enable it to maneuver through the rocks, reefs, and seagrass that comprise its favored habitats. The International Union for Conservation of Nature (IUCN) has listed this species under Least Concern; it is seldom caught by fisheries due to its habitat prefere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trygonoptera Galba
The yellow shovelnose stingaree (''Trygonoptera galba'') is a little-known species of stingray in the family Urolophidae, endemic to the outer continental shelf off Western Australia at a depth of . Growing to long, this species has an oval pectoral fin disc with a rather elongated, triangular snout, and a short tail with a caudal fin but no dorsal fin. There are prominent lobes outside of its nostrils, and a skirt-shaped flap of skin with a deeply fringed trailing margin in between. Above, this ray is an almost completely uniform light to dark yellow color, which darkens on the caudal fin. The International Union for Conservation of Nature (IUCN) assesses the yellow shovelnose stingaree as least concern, as there is minimal fishing within its range. Taxonomy The first specimens of the yellow shovelnose stingaree were collected by the Taiwanese ship FV ''Hai Kung'' during the winter of 1981, when it was conducting exploratory fishery surveys off Western Australia. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urolophidae
The Urolophidae are a family of rays in the order Myliobatiformes, commonly known as stingarees or round stingrays. This family formerly included the genera ''Urobatis'' and '' Urotrygon'' of the Americas, which are presently recognized as forming their own family Urotrygonidae. Stingarees are found in the Indo-Pacific region, with the greatest diversity off Australia. They are sluggish, bottom-dwelling fish that have been recorded from shallow waters close to shore to deep waters over the upper continental slope. Measuring between long, these rays have oval to diamond-shaped pectoral fin discs and relatively short tails that terminate in leaf-shaped caudal fins, and may also have small dorsal fins and lateral skin folds. Most are smooth-skinned, and some have ornate dorsal color patterns. Stingarees feed on or near the sea floor, consuming small invertebrates and occasionally bony fishes. They are aplacental viviparous, meaning their embryos emerge from eggs inside the uter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animalia
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilateral symmetry, bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Johannes Peter Müller
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Fish Of Australia
Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (other) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * Marines, a naval-based infantry force ** United States Marine Corps ** Royal Marines of the UK ** Brazilian Marine Corps ** Spanish Marine Infantry ** Fusiliers marins (France) ** Indonesian Marine Corps ** Republic of China Marine Corps ** Republic of Korea Marine Corps ** Royal Thai Marine Corps *"Marine" also means "navy" in several languages: ** Austro-Hungarian Navy () ** Belgian Navy (, , ) ** Royal Canadian Navy () *** Provincial Marine (1796–1910), a predecessor to the Royal Canadian Navy ** Navy of the Democratic Republic of the Congo () ** Royal Danish Navy () ** Finnish Navy (, ) ** French Navy () ** Gabonese Navy () ** German Navy () ** Royal Moroccan Navy () ** Royal Netherlands Navy () ** Swedish Navy () Places * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ray Genera
Ray may refer to: Fish * Ray (fish), any cartilaginous fish of the superorder Batoidea * Ray (fish fin anatomy), a bony or horny spine on a fin Science and mathematics * Ray (geometry), half of a line proceeding from an initial point * Ray (graph theory), an infinite sequence of vertices such that each vertex appears at most once in the sequence and each two consecutive vertices in the sequence are the two endpoints of an edge in the graph * Ray (optics), an idealized narrow beam of light * Ray (quantum theory), an equivalence class of state-vectors representing the same state Arts and entertainment Music * The Rays, an American musical group active in the 1950s * Ray (musician), stage name of Japanese singer Reika Nakayama (born 1990) * Ray J, stage name of singer William Ray Norwood, Jr. (born 1981) * ''Ray'' (Bump of Chicken album) * ''Ray'' (Frazier Chorus album) * ''Ray'' (L'Arc-en-Ciel album) * ''Rays'' (Michael Nesmith album) (former Monkee) * ''Ray'' (soundtrac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
