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Mustelus Punctulatus
The blackspotted smooth-hound (''Mustelus punctulatus'') is a houndshark of the family Triakidae found on the continental shelves of the subtropical eastern Atlantic from the Mediterranean to the Western Sahara, between latitudes 45 and 20°N, from the surface to a depth of . It can reach of a length of . Parasites As other sharks, the blackspotted smooth-hound harbours a number of parasites. '' Triloculotrema euzeti'' is a monocotylid monogenean parasite within the nasal tissues, which was described in 2016 from sharks caught off Tunisia Tunisia, officially the Republic of Tunisia, is a country in the Maghreb region of North Africa. It is bordered by Algeria to the west and southwest, Libya to the southeast, and the Mediterranean Sea to the north and east. Tunisia also shares m .... References * * {{Taxonbar, from=Q2454192 blackspotted smooth-hound Fish of the Mediterranean Sea Marine fish of North Africa blackspotted smooth-hound ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antoine Risso
Giuseppe Antonio Risso (8 April 1777 – 25 August 1845), called Antoine Risso, was a naturalist from Nice. Risso was born in the city of Nice in the Duchy of Savoy, and studied under Giovanni Battista Balbis. He published ' (1810), ' (1826) and ' (1818–1822). Risso's dolphin was named after him. He is denoted by the author abbreviation Risso when citing a botanical name; the same abbreviation is used for zoological names. Genera and species named after him * '' Rissoa'' : a genus of gastropods * '' Rissoella'' : a genus of gastropod * '' Rissoella'' : a genus of red algae * '' Electrona risso'' : a lanternfish *'' Polyacanthonotus rissoanus'' : smallmouth spiny eel Genera and species named by him He named 549 marine genera and species. IPNI The International Plant Names Index (IPNI) describes itself as "a database of the names and associated basic bibliographical details of seed plants, ferns and lycophytes." Coverage of plant names is best at the rank of species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
20th Parallel North
Following are circles of latitude between the 15th parallel north and the 20th parallel north: 16th parallel north The 16th parallel north is a circle of latitude that is 16 degrees north of the Earth's equatorial plane. It crosses Africa, Asia, the Indian Ocean, the Pacific Ocean, Central America, the Caribbean, and the Atlantic Ocean. At this latitude the sun is visible for 13 hours, 5 minutes during the summer solstice and 11 hours, 11 minutes during the winter solstice. As a dividing line After World War II, the parallel divided Vietnam into Chinese military administration in the north and the British in the south (See Timeline of World War II (1945) and War in Vietnam (1945-1946)). In the Chadian–Libyan conflict, from 1984 the parallel, known as the "Red Line", delineated areas controlled by opposing combatants. Previously the Red Line had been the 15th parallel north. (See also Operation Manta.) Around the world Starting at the Prime Meridian and heading eastw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Of The Mediterranean Sea
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 fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mustelus
''Mustelus'', also known as the smooth-hounds, is a genus of sharks in the family (biology), family Houndshark, Triakidae. The name of the genus comes from the Latin word ''mustela'', meaning weasel. It should not be confused with the genus name ''Mustela'', which is used for weasels. A smooth-hound can grow to long and weigh more than . Species Currently, 27 recognized species are placed in this genus: * ''Mustelus albipinnis'' José Luis Castro-Aguirre, Castro-Aguirre, Alberto Antuna-Mendiola, Antuna-Mendiola, Adrián Felipe González-Acosta, González-Acosta & José De La Cruz-Agüero, De La Cruz-Agüero, 2005 (white-margin fin houndshark) * ''Andaman smooth-hound, Mustelus andamanensis'' William Toby White, White, Arunrugstichai & Naylorn, 2021 (Andaman smooth-hound) * ''Mustelus antarcticus'' Albert Günther, Günther, 1870 (gummy shark) * ''Mustelus asterias'' Hippolyte Cloquet, Cloquet, 1821 (starry smooth-hound) * ''Mustelus californicus'' Theodore Gill, T. N. Gill, 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tunisia
Tunisia, officially the Republic of Tunisia, is a country in the Maghreb region of North Africa. It is bordered by Algeria to the west and southwest, Libya to the southeast, and the Mediterranean Sea to the north and east. Tunisia also shares maritime borders with Italy through the islands of Sicily and Sardinia to the north and Malta to the east. It features the archaeological sites of Carthage dating back to the 9th century BC, as well as the Great Mosque of Kairouan. Known for its ancient architecture, Souks of Tunis, souks, and blue coasts, it covers , and has a population of 12.1 million. It contains the eastern end of the Atlas Mountains and the northern reaches of the Sahara desert; much of its remaining territory is arable land. Its of coastline includes the African conjunction of the western and eastern parts of the Mediterranean Basin. Tunisia is home to Africa's northernmost point, Cape Angela. Located on the northeastern coast, Tunis is the capital and List of cities ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monogenea
Monogeneans, members of the class Monogenea, are a group of ectoparasitic flatworms commonly found on the skin, gills, or fins of fish. They have a direct lifecycle and do not require an intermediate host. Adults are hermaphrodites, meaning they have both male and female reproductive structures.L.A. Tubbsa et al. (2005). "Effects of temperature on fecundity in vitro, egg hatching and reproductive development of ''Benedenia seriolae'' and ''Zeuxapta seriolae'' (Monogenea) parasitic on yellowtail kingfish Seriola lalandi". ''International Journal for Parasitology''(35), 315–327. Some monogeneans are oviparous (egg-laying) and some are viviparous (live-bearing). Oviparous varieties release eggs into the water. Viviparous varieties release larvae, which immediately attach to another host. The genus ''Gyrodactylus'' is an example of a viviparous variety, while the genus ''Dactylogyrus'' is an example of an oviparous variety. Signs and symptoms Freshwater fish that become infect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monocotylidae
Monocotylidae is a family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ... of monogenean flatworms. Genera * '' Anoplocotyloides'' * '' Calicotyle'' * '' Cathariotrema'' * '' Clemacotyle'' * '' Dasybatotrema'' * '' Decacotyle'' * '' Dendromonocotyle'' * '' Dictyocotyle'' * '' Empruthotrema'' * '' Euzetia'' * '' Heliocotyle'' * '' Heterocotyle'' * '' Holocephalocotyle'' * '' Mehracotyle'' * '' Merizocotyle'' * '' Monocotyle'' * '' Mycteronastes'' * '' Myliocotyle'' * '' Neoheterocotyle'' * '' Papillocotyle'' * '' Potamotrygonocotyle'' * '' Septesinus'' * '' Spinuris'' * '' Squalotrema'' * '' Thaumatocotyle'' * '' Triloculotrema'' References Monopisthocotylea Platyhelminthes families {{Monogenea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Parasites
Like humans and other animals, fish suffer from diseases and parasites. Fish defences against disease are specific and non-specific. Non-specific defences include skin and scales, as well as the mucus layer secreted by the epidermis that traps microorganisms and inhibits their growth. If pathogens breach these defences, fish can develop inflammatory responses that increase the flow of blood to infected areas and deliver white blood cells that attempt to destroy the pathogens. Specific defences are specialised responses to particular pathogens recognised by the fish's body, that is adaptative immune responses. In recent years, vaccines have become widely used in aquaculture and ornamental fish, for example vaccines for commercial food fishes like Aeromonas salmonicida, furunculosis in salmon and Lactococcosis\Streptococcosis in farmed grey mullet, Tilapia and koi herpes virus in koi. Some commercially important fish diseases are VHS, ICH, and whirling disease. Parasites ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
45th Parallel North
The 45th parallel north is a circle of latitude that is 45 degrees north of Earth's equator. It crosses Europe, Asia, the Pacific Ocean, North America, and the Atlantic Ocean. The 45th parallel north is often called the halfway point between the equator and the North Pole, but the true halfway point is north of it (approximately between 45°08'36" and 45°08'37") because Earth is an oblate spheroid; that is, it bulges at the equator and is flattened at the poles. At this latitude, the sun is visible for 15 hours 37 minutes during the summer solstice The summer solstice or estival solstice occurs when one of Earth's poles has its maximum tilt toward the Sun. It happens twice yearly, once in each hemisphere ( Northern and Southern). The summer solstice is the day with the longest peri ..., and 8 hours 46 minutes during the winter solstice. The Noon#Solar noon, midday Sun stands 21.6° above the southern horizon at the December solstice, 68.4° at the June solstice, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Houndshark
The Triakidae or houndsharks are a family of ground sharks, consisting of about 40 species in nine genera. In some classifications, the family is split into two subfamilies, with the genera ''Mustelus'', '' Scylliogaleus'' and '' Triakis'' in the subfamily Triakinae, and the remainders in the subfamily Galeorhininae. Houndsharks are distinguished by possessing two large, spineless dorsal fins, an anal fin and oval eyes with nictitating eyelids. They are small to medium in size, ranging from in adult length. They are found throughout the world in warm and temperate waters, where they feed on small fish and invertebrates on the seabed and in midwater. Fossil records of this group date back to the Cenomanian. Genera Houndsharks are classified into subfamilies and genera as follows: * Galeorhininae Gill, 1862 ** '' Furgaleus'' Whitley, 1951 (whiskery shark) ** '' Galeorhinus'' Blainville, 1816 (school shark) ** '' Gogolia'' Compagno, 1973 (sailback houndshark) ** ''Hemitriak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Latitude
In geography, latitude is a geographic coordinate system, geographic coordinate that specifies the north-south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from −90° at the south pole to 90° at the north pole, with 0° at the Equator. Parallel (latitude), Lines of constant latitude, or ''parallels'', run east-west as circles parallel to the equator. Latitude and longitude are used together as a coordinate pair to specify a location on the surface of the Earth. On its own, the term "latitude" normally refers to the ''geodetic latitude'' as defined below. Briefly, the geodetic latitude of a point is the angle formed between the vector perpendicular (or ''Normal (geometry), normal'') to the ellipsoidal surface from the point, and the equatorial plane, plane of the equator. Background Two levels of abstraction are employed in the definitions of latitude and longitude. In the first step the physical surface i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
