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Spearfish Remora
The spearfish remora (''Remora brachyptera'') is a species of remora with a worldwide distribution in tropical and subtropical seas. Remoras attach themselves to other fish with a sucker on the head and this fish is almost exclusively found living on billfishes or swordfishes, and sometimes on sharks. Description This species can reach in fish measurement, total length, though most do not exceed . It is an elongated cylindrical fish, usually whitish or pale blue in life, but tan or dusky-brown when dead. The rather flattened head has an oblong disc or sucker with 14 to 17 transverse plates with which it clings to its Host (biology), host. The dorsal and anal fins are long and set far back on the body. The dorsal fin has between 27 and 34 soft rays, the pectoral fin has 23 to 27 rays and the anal fin 25 to 34 rays. The caudal fin has a straight edge. The sucker reaches no further than the pectoral fins, and the outer two-thirds of the pectoral rays are flexible. There are up to 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Thomas Lowe
Richard Thomas Lowe (1802–1874) was an English scientist, a botanist, ichthyologist, malacologist, and a clergyman. In 1825 he graduated from Christ's College, Cambridge, and in the same year he took holy orders. In 1832 he became a clergyman in the Madeira Islands, where he was also a part-time naturalist, extensively studying the local flora and fauna. He wrote a book on the Madeiran flora. He died in 1874 when the ship he was on was wrecked off the Isles of Scilly. Taxa Lowe named and described numerous molluscan taxa, including: * ''Caseolus'', a land snail genus and eight species within it * ''Lemniscia'', a land snail genus and two species within it See also *:Taxa named by Richard Thomas Lowe References * Notes 1802 births 1874 deaths 19th-century English Anglican priests Alumni of Christ's College, Cambridge English botanists English ichthyologists English malacologists English zoologists {{England-scientist-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Host (biology)
In biology and medicine, a host is a larger organism that harbours a smaller organism; whether a parasite, parasitic, a mutualism (biology), mutualistic, or a commensalism, commensalist ''guest'' (symbiont). The guest is typically provided with nourishment and shelter. Examples include animals playing host to parasitic worms (e.g. nematodes), cell (biology), cells harbouring pathogenic (disease-causing) viruses, a Fabaceae, bean plant hosting mutualistic (helpful) Rhizobia, nitrogen-fixing bacteria. More specifically in botany, a host plant supplies nutrient, food resources to micropredators, which have an evolutionarily stable strategy, evolutionarily stable relationship with their hosts similar to ectoparasitism. The host range is the collection of hosts that an organism can use as a partner. Symbiosis Symbiosis spans a wide variety of possible relationships between organisms, differing in their permanence and their effects on the two parties. If one of the partners in an ass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Remora (genus)
''Remora'' is a genus of remoras native to temperate to tropical The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in the Southern Hemisphere at S. The tropics are also referred to ... marine waters worldwide. Species The currently recognized species in this genus are: References Taxa named by Theodore Gill Marine fish genera {{Carangiformes-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Remora
The common remora (''Remora remora'') is a pelagic marine fish belonging to family Echeneidae. The dorsal fin, which has 22 to 26 soft rays, acts as a suction cup, creating a vacuum to allow it to attach to larger marine animals, such as whales, dolphins, sharks, and sea turtles. Physical characteristics The common remora has a suckerlike dorsal fin and an anal fin. Its body can be brown, black or grey in color. It can reach in total length, though most do not exceed . The maximum known weight of this species is . Biology and behavior ''R. remora'' and its host seem to partake in a symbiotic relationship; the common remora does not seem to have a negative overall effect on its host. The host provides the remora with fast-moving water to bathe its gills, a steady flow of food, transportation, and protection. The remora benefits the host by feeding in part on some of its parasites, but increases its hydrodynamical drag. The common remora's attachment to one host can last for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Striped Marlin
The striped marlin (''Kajikia audax'') is a species of marlin found in tropical to temperate Indo-Pacific oceans not far from the surface. It is a desirable commercial and game fish. The striped marlin is a predator that hunts during the day in the top 100 m or so of the water column, often near the surface. One of their chief prey is sardines. Description The Striped Marlin consists of 42-48 rays on its tall first dorsal fin that is almost the same or longer than its body depth while the second dorsal fin is much smaller. They have torpedo-like and compressed bodies. They have around 10-20 clear, visible bluish stripes on the sides of their bodies even after death. The color of their bodies is dark blue or black above and silvery-white on the bottom. Striped Marlin has an average length of and a maximum length of and can weight up to . Life Cycle Striped Marlin reached sexual maturity at a age of 1-2 years or for males and 1.5-2.5 years or for females. They can live up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Marlin
The black marlin (''Istiompax indica'') is a species of marlin found in tropical and subtropical areas of the Indian and Pacific Oceans. With a maximum published length of and weight of , it is one of the largest marlins and also one of the largest bony fish. Marlin are among the fastest fish, but speeds are often wildly exaggerated in popular media, such as reports of . Recent research suggests a burst speed of is near the maximum rate. Black marlin are fished commercially and are also a highly prized game fish. Black marlins have been known to drag Maldivian fishing boats of the ancient times for very long distances until it got tired; and then it would then take many hours for the fishermen to row or sail back home. Taxonomy French naturalist Georges Cuvier described the black marlin in 1832 as ''Tetrapturus indicus''. Description Compared to striped or white marlins and sailfish, black marlins are more solid than their blue counterparts. They have a shorter bill and a rou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Marlin
The white marlin (''Kajikia albida''), also known as Atlantic white marlin, marlin, skilligalee, is a species of billfish that lives in the epipelagic zone of the tropical and subtropical Atlantic Ocean. They are found between the latitudes of 45° N and 45° S in waters deeper than 100 m. Even though white marlin are found in bodies of water that are deeper than 100 m they tend to stay near the surface. White marlin have been found near banks, shoals, and canyons, but they are not limited to those locations.Braun, C., Kaplan, M., Horodysky, A., Llopiz, J. 2015. Satellite telemetry reveals physical processes driving billfish behavior. Animal Biotelemetry. They prefer warm surface temperatures greater than 22 °C.Hoolihan, J. 2013. White Marlin. International Commission for the Conservation of Atlantic Tunas. 2.1.7 Identification White marlin are commonly misidentified as roundscale spearfish (''Tetrapturus georgii''). This likely caused a miscount of the population size of w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sailfish
The sailfish is one or two species of marine fish in the genus ''Istiophorus'', which belong to the family Istiophoridae (marlins). They are predominantly blue to gray in colour and have a characteristically large dorsal fin known as the sail, which often stretches the entire length of the back. Another notable characteristic is the elongated rostrum (bill) consistent with that of other marlins and the swordfish, which together constitute what are known as billfish in sport fishing circles. Sailfish live in colder pelagic waters of all Earth's oceans, and hold the record for the highest speed of any marine animal. Species Two sailfish species have been recognized.McGrouther, M. (2013). Sailfish, Istiophorus platypterus.' Australian Museum. Retrieved 26 April 2013. No differences have been found in mtDNA, morphometrics or meristics between the two supposed species and most authorities now only recognize a single species, ''Istiophorus platypterus'', found in warmer oceans aro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Branchial Arch
Branchial arches, or gill arches, are a series of bony "loops" present in fish, which support the gills. As gills are the primitive condition of vertebrates, all vertebrate embryos develop pharyngeal arches, though the eventual fate of these arches varies between taxa. In jawed fish, the first arch develops into the jaws, the second into the hyomandibular complex, with the posterior arches supporting gills. In amphibians and reptiles, many elements are lost including the gill arches, resulting in only the oral jaws and a hyoid apparatus remaining. In mammals and birds, the hyoid is still more simplified. All basal vertebrates breathe with gills. The gills are carried right behind the head, bordering the posterior margins of a series of openings from the esophagus to the exterior. Each gill is supported by a cartilaginous or bony gill arch. Bony fish have four pairs of arches, cartilaginous fish have five to seven pairs, and primitive jawless fish have seven. The vertebrate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gill Raker
Gill rakers in fish are bony or cartilaginous processes that project from the branchial arch (gill arch) and are involved with suspension feeding tiny prey. They are not to be confused with the gill filaments that compose the fleshy part of the gill used for gas exchange. Rakers are usually present in two rows, projecting from both the anterior and posterior side of each gill arch. Rakers are widely varied in number, spacing, and form. By preventing food particles from exiting the spaces between the gill arches, they enable the retention of food particles in filter feeders. The structure and spacing of gill rakers in fish determines the size of food particles trapped, and correlates with feeding behavior. Fish with densely spaced, elongated, comb-like gill rakers are efficient at filtering tiny prey, whereas carnivores and omnivores often have more widely spaced gill rakers with secondary projections. Because gill raker characters often vary between closely related taxa, they are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Measurement
Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. Simply put, this measurement excludes the length of the caudal (tail) fin. * Total length (TL) is the length of a fish measured from the tip of the snout to the tip of the longer lobe of the caudal fin, usually measured with the lobes compressed along the midline. It is a straight-line measure, not measured over the curve of the body. Standard length measurements are used with Teleostei (most bony fish), while total length measurements are used with Myxini (hagfish), Petromyzontiformes (lampreys), and (usually) Elasmobranchii (sharks and rays), as well as some other fishes. Total length meas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Fortuné Théodore Eydoux
Joseph Fortuné Théodore Eydoux (23 April 1802 – 6 July 1841) was a French naturalist. Biography Eydoux and Louis François Auguste Souleyet were surgeon naturalists on the expedition ship "La Favorite" which made a circumnavigation in 1830-32 captained by Cyrille Pierre Théodore Laplace. In 1836-37 he voyaged again this time with "La Bonite" captained by Auguste-Nicolas Vaillant. He published on the animals and plants collected with Gervais and Louis Souleyet who continued to publish works with Eydoux as co-author after Eydoux's death. Works Partial list: *With P. Gervais Voyage de la Favorite (1822). "Reptiles". ''Zool. Guérin, Paris'' 111: 1–10. *With F. A. Souleyet and Auguste-Nicolas Vaillant (1840-1866).''Voyage autour du monde exécuté pendant les années 1836 et 1837 sur la corvette La Bonite, commandée par M. Vaillant capitaine de vaisseau, publié par ordre du roi sous les auspices du département de la Marine. Zoologie''. Paris: Bertrand. 15 volumes. Legac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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