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Figaro (genus)
''Figaro'' is a genus of shark, and part of the family (biology), family Pentanchidae, the deepwater catsharks. Until 2008, ''Figaro'' was generally considered to be a subgenus of ''Galeus'', the sawtail catsharks. The two known species are found off Australia, inhabiting deep, offshore waters on or near the bottom. ''Figaro'' contains small, slender, firm-bodied sharks that bear distinctive crests of enlarged, spiny dermal denticles along the dorsal and ventral edges of their short caudal fins. The caudal peduncle is relatively long, such as that the anal fin, anal and caudal fins are some distance apart. In adult males, the inner margins of the pelvic fins are fused together to form a subtle "apron" over the claspers. Australian sawtail catshark, ''F. boardmani'' is a predator of fishes, crustaceans, and cephalopods, and is oviparous; less is known about the Northern sawtail catshark, ''F. striatus''. Both are harmless and are of no economic importance. Taxonomy ''Figaro'' was c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Sawtail Catshark
The Australian sawtail catshark (''Figaro boardmani'') is a common species of deepwater catshark, belonging to the family (biology), family Pentanchidae, endemism, endemic to southern Australian waters. It is found on or near the bottom of the outer continental shelf and upper continental slope, at depths of . This slim-bodied species is characterized by crests of enlarged dermal denticles along both the dorsal and ventral edges of its caudal fin and caudal peduncle, along with a color pattern of broad, dark saddles outlined in white. It can grow to in length. The Australian sawtail catshark feeds mainly on fishes, crustaceans, and cephalopods. Females are oviparous and lay eggs enclosed by egg case (Chondrichthyes), capsules. This species is often bycatch, caught incidentally by commercial fishing, commercial bottom trawl fisheries, but is not significantly threatened by fishing activity. Thus, it has been assessed as of Least Concern by the International Union for Conservation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalopod
A cephalopod is any member of the molluscan Taxonomic rank, class Cephalopoda (Greek language, Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral symmetry, bilateral body symmetry, a prominent head, and a set of cephalopod arm, arms or tentacles (muscular hydrostats) modified from the primitive molluscan foot. Fishers sometimes call cephalopods "inkfish", referring to their common ability to squirt Cephalopod ink, ink. The study of cephalopods is a branch of malacology known as teuthology. Cephalopods became dominant during the Ordovician period, represented by primitive nautiloids. The class now contains two, only distantly related, Extant taxon, extant subclasses: Coleoidea, which includes octopuses, squid, and cuttlefish; and Nautiloidea, represented by ''Nautilus (genus), Nautilus'' and ''Allonautilus''. In the Coleoidea, the molluscan shell has been internalized or is absent, where ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphology (biology)
Morphology (from Ancient Greek μορφή (morphḗ) "form", and λόγος (lógos) "word, study, research") is the study of the form and structure of organisms and their specific structural features. This includes aspects of the outward appearance (shape, structure, color, pattern, size), as well as the form and structure of internal parts like bones and organs, i.e., anatomy. This is in contrast to physiology, which deals primarily with function. Morphology is a branch of life science dealing with the study of the overall structure of an organism or taxon and its component parts. History The etymology of the word "morphology" is from the Ancient Greek (), meaning "form", and (), meaning "word, study, research". While the concept of form in biology, opposed to function, dates back to Aristotle (see Aristotle's biology), the field of morphology was developed by Johann Wolfgang von Goethe (1790) and independently by the German anatomist and physiologist Karl Fried ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asymbolus
''Asymbolus'' is a genus of catsharks in the Family (biology), family Pentanchidae, the deepwater catsharks. Species The currently recognized species in this genus are: * ''Australian spotted catshark, Asymbolus analis'' (James Douglas Ogilby, J. D. Ogilby, 1885) (Australian spotted catshark) * ''Asymbolus funebris'' Leonard Joseph Victor Compagno, Compagno, John D. Stevens (ichthyologist), Stevens & Peter R. Last, Last, 1999 (blotched catshark) * ''Starry catshark, Asymbolus galacticus'' Bernard Séret, Séret & Last, 2008 (starry catshark) * ''Western spotted catshark, Asymbolus occiduus'' Last, Martin Fellows Gomon, M. F. Gomon & Daniel C. Gledhill, Gledhill, 1999 (western spotted catshark) * ''Pale spotted catshark, Asymbolus pallidus'' Last, M. F. Gomon & Gledhill, 1999 (pale spotted catshark) * ''Asymbolus parvus'' Compagno, Stevens & Last, 1999 (dwarf catshark) * ''Orange-spotted catshark, Asymbolus rubiginosus'' Last, M. F. Gomon & Gledhill, 1999 (orange-spotted catshark ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mouse Catshark
The mouse catshark (''Galeus murinus'') is a species of shark belonging to the family Pentanchidae, the deepwater catsharks. It is common in the northeastern Atlantic Ocean from Iceland to Western Sahara. There is much taxonomic confusion regarding this species in Icelandic waters, where it may be confounded with another species of ''Galeus'' or ''Apristurus''. Probably not exceeding long, the mouse catshark has a uniformly brown body and is characterized by large, rounded pelvic fins and crests of enlarged dermal denticles along both the dorsal and ventral caudal fin margins. In addition, in adult males the inner margins of the pelvic fins are merged into an "apron". Demersal in nature, the mouse catshark inhabits continental slopes at a depth of . It preys mainly on benthic crustaceans, bony fishes, and cephalopods. Reproduction is oviparous, with females producing "furry" egg capsules. Although it is caught incidentally by commercial trawl fisheries, this species does not ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Springer's Sawtail Catshark
Springer's sawtail catshark (''Galeus springeri'') is a species of shark belonging to the family Pentanchidae, the deepwater catsharks. This shark is found in waters deep off the islands of the Antilles, from Cuba to the Leewards. A small, slim-bodied species reaching a length of , the Springer's sawtail catshark can be identified by its color pattern of horizontal dark stripes in front of the first dorsal fin, and dark dorsal saddles behind. It is additionally characterized by the presence of saw-toothed crests, made of enlarged dermal denticles along both the dorsal and the ventral edges of the caudal fin. The Springer's sawtail catshark is oviparous. Taxonomy The Springer's sawtail catshark was originally regarded as the striped color morph of the Antilles catshark (''G. antillensis'', formerly ''G. arae antillensis''). The first known specimen had resided in the National Museum of Natural History for over 20 years, until an artifact of preservation revealed the distinctive v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parmaturus
''Parmaturus'' is a genus of deepwater catsharks in the Family (biology), family Pentanchidae. Four species were described in 2007 and another in 2019 with more species likely to be described in the near future. Species The following are the currently described species: * ''White-clasper catshark, Parmaturus albipenis'' Bernard Séret, Séret & Peter R. Last, Last, 2007 (white-clasper catshark) * ''Brazilian filetail catshark, Parmaturus angelae'' (Brazilian filetail catshark) * ''Campeche catshark, Parmaturus campechiensis'' Stewart Springer, S. Springer, 1979 (Campeche catshark) * ''Velvet catshark, Parmaturus lanatus'' Séret & Last, 2007 (velvet catshark) * ''McMillan's catshark, Parmaturus macmillani'' Graham S. Hardy, Hardy, 1985 (McMillan's catshark) * ''Salamander shark, Parmaturus pilosus'' Samuel Garman, Garman, 1906 (salamander shark) * ''Filetail catshark, Parmaturus xaniurus'' (Charles Henry Gilbert, C. H. Gilbert, 1892) (filetail catshark) There are several as yet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commonwealth Scientific And Industrial Research Organisation
The Commonwealth Scientific and Industrial Research Organisation (CSIRO) is an Australian Government agency that is responsible for scientific research and its commercial and industrial applications. CSIRO works with leading organisations around the world. From its headquarters in Canberra, CSIRO maintains more than 50 sites across Australia as well as in France and the United States, employing over 6,500 people. Federally funded scientific research in Australia began in 1916 with the creation of the Advisory Council of Science and Industry. However, the council struggled due to insufficient funding. In 1926, research efforts were revitalised with the establishment of the Council for Scientific and Industrial Research (CSIR), which strengthened national science leadership and increased research funding. CSIR grew rapidly, achieving significant early successes. In 1949, legislative changes led to the renaming of the organisation as Commonwealth Scientific and Industrial Research ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parmaturus Melanobranchus
The blackgill catshark or blackgill bristle shark (''Dichichthys melanobranchus'') is a deep water bristle shark known from very few specimens, found on or near the bottom on the continental slope, at off the coasts of China and Japan. Specimens can attain a total length of at least , have elongated cat-like eyes, and have two small dorsal fins set far back. They’re oviparous and lay one egg at a time. This shark is a potential bycatch Bycatch (or by-catch), in the fishing industry, is a fish or other marine species that is caught unintentionally while fishing for specific species or sizes of wildlife. Bycatch is either the wrong species, the wrong sex, or is undersized or juve ... of deep water bottom-trawl fisheries operating within its range, but no specific information is available. In the upper jaw, there are rods of blunt, flat teeth with 3 cusps, likely used for crushing, as well as row of sharper teeth with the mid, central cusp longer and to a point. The bottom te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synonym (taxonomy)
In taxonomy, the scientific classification of living organisms, a synonym is an alternative scientific name for the accepted scientific name of a taxon. The Botanical nomenclature, botanical and Zoological nomenclature, zoological codes of nomenclature treat the concept of synonymy differently. * In nomenclature, botanical nomenclature, a synonym is a Binomial nomenclature, scientific name that applies to a taxon that now goes by a different scientific name. For example, Carl Linnaeus, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called ''Pinus abies''. This name is no longer in use, so it is now a synonym of the current scientific name, ''Picea abies''. * In zoology, moving a species from one genus to another results in a different Binomial nomenclature, binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Weed Fowler
Henry Weed Fowler (March 23, 1878 – June 21, 1965) was an American zoologist born in Holmesburg, Philadelphia, Holmesburg, Pennsylvania. He studied at Stanford University under David Starr Jordan. He joined the Academy of Natural Sciences in Philadelphia and worked as an assistant from 1903 to 1922, associate curator of vertebrates from 1922 to 1934, curator of fish and reptiles from 1934 to 1940 and curator of fish from 1940 to 1965. He published material on numerous topics including crustaceans, birds, reptiles and amphibians, but his most important work was on fish. In 1927 he co-founded the American Society of Ichthyologists and Herpetologists and acted as treasurer until the end of 1927. In 1934, he went to Cuba, alongside Charles Cadwalader (president of the Academy of Natural Sciences of Drexel University, Academy of Natural Sciences of Philadelphia), at the invitation of Ernest Hemingway to study billfishes, he stayed with Hemingway for six weeks and the three men devel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Journal
In academic publishing, a scientific journal is a periodical publication designed to further the progress of science by disseminating new research findings to the scientific community. These journals serve as a platform for researchers, scholars, and scientists to share their latest discoveries, insights, and methodologies across a multitude of scientific disciplines. Unlike professional or trade magazines, the articles are mostly written by scientists rather than staff writers employed by the journal. Scientific journals are characterized by their rigorous peer review process, which aims to ensure the validity, reliability, and quality of the published content. In peer review, submitted articles are reviewed by active scientists (peers) to ensure scientific rigor. With origins dating back to the 17th century, the publication of scientific journals has evolved significantly, advancing scientific knowledge, fostering academic discourse, and facilitating collaboration within ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
