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The dusky shark, Carcharhinus obscurus, is one of the larger species of shark, reaching 350 kg. The dusky shark is also known as the black whaler and dusky whaler. Less frequently used names include bay-shark, brown dusky shark, brown shark, common whaler, dusky ground shark, dusky shark. Image File history File links Caobs_u0. ...
The conservation status of a species is an indicator of the likelihood of that species continuing to survive. ...
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Near Threatened (NT) is an IUCN category assigned to species or lower taxa which may be considered threatened with extinction in the near future, although it does not currently qualify for the threatened status. ...
Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ...
Phyla Placozoa (trichoplax) Orthonectida (orthonectids) Rhombozoa (dicyemids) Subregnum Parazoa Porifera (sponges) Subregnum Eumetazoa Radiata (unranked) (radial symmetry) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Bilateria (unranked) (bilateral symmetry) Acoelomorpha (basal) Myxozoa (slime animals) Superphylum Deuterostomia (blastopore becomes anus) Chordata (vertebrates, etc. ...
{{{subdivision_ranks}}} See below Chordates (phylum Chordata) are a group of animals that includes the vertebrates, together with several closely related invertebrates. ...
Orders The Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nostrils, scales, two-chambered hearts, and skeletons made of cartilage. ...
Superorders Galeomorpha Batoidea Selachimorpha Elasmobranchii is the subclass of cartilaginous fishes that includes skates, rays and sharks. ...
Families Scyliorhinidae (cat sharks) Proscyllidae (finback cat sharks) Pseudotriakidae (false cat sharks) Leptochariidae (barbeled houndshark) Triakidae (hound sharks) Hemigaleidae (weasel sharks) Carcharhinidae (requiem sharks) The ground sharks, order Carcharhiniformes, are the largest order of sharks, with over 270 species, and includes a number of common types, such as the blue...
Genera Carcharhinus Galeocerdo Glyphis Isogomphodon Lamiopsis Loxodon Nasolamia Negaprion Prionace Rhizoprionodon Scoliodon Sphyrna Triaenodon The requiem sharks are a family (Carcharhinidae) that includes some of the best-known and most common types of sharks, such as the tiger shark, blue shark, bull shark, and milk shark. ...
Species 31 species; see text. ...
In biology, binomial nomenclature is the formal method of naming species. ...
Lesueur in 1818, painted by Charles Wilson Peale. ...
Image File history File links Download high-resolution version (1357x628, 27 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Dusky shark ...
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Orders Carcharhiniformes Heterodontiformes Hexanchiformes Lamniformes Orectolobiformes Pristiophoriformes Squaliformes Squatiniformes Sharks (superorder Selachimorpha) are fish with a full cartilaginous skeleton[1] and a streamlined body. ...
Physical description
The dusky shark has a long streamlined body that is brown or gray above and white below. On the side of the body a stripe can be seen from the pelvic fins to the head. They can reach 3.65 m. Fish anatomy is primarily governed by the physical characteristics of water, which is much denser than air, holds a relatively small amount of dissolved oxygen, and absorbs light more than does air. ...
Diet The diet of the dusky shark includes small schooling fish such as sardines and anchovies, as well as larger fish like tuna, mackerel, flatfish and eels. The dusky shark also eats dogfish, catsharks, skates and rays and sometimes bottlenose dolphins. Sardines or pilchards are a group of several types of small oily fish related to herrings, family Clupeidae. ...
Genera Amazonsprattus Anchoa Anchovia Anchiovella Cetengraulis Coilia Encrasicholina Engraulis Jurengraulis Lycengraulis Lycothrissa Papuengraulis Pterengraulis Setipinna Stolephorus Thryssa The anchovies are a family (Engraulidae) of small but common schooling saltwater plankton-feeding fish. ...
Species See text Tuna, sometimes called tunafish, are several species of ocean-dwelling fish in the family Scombridae, mostly in the genus Thunnus. ...
Mackerel is a common name applied to a number of different species of fish, mostly, but not exclusively, from the family Scombridae. ...
Families Suborder Psettodoidei Psettodoidae Suborder Pleuronectoidei Citharidae Scophthalmidae Bothidae(lefteye flounders) Pleuronectidae(righteye flounders) Paralichthyidae Achiropsettidae(southern flounders) Samaridae Suborder Soleoidei Soleidae(soles) Achiridae(American soles) Cynoglossidae(tonguefishes) The flatfish are an order (Pleuronectiformes) of ray-finned fish, also called the Heterosomata, sometimes classified as a suborder of Perciformes. ...
Suborders Anguilloidei Nemichthyoidei Congroidei Synaphobranchoidei See text for families. ...
Spiny Dogfish, Squalus acanthias The name dogfish is applied to a number of small sharks found in the northeast Atlantic, Pacific, and Mediterranean, especially those in the three families Scyliorhinidae, Dalatiidae and Squalidae. ...
Genera Apristurus Asymbolus Atelomycterus Aulohalaelurus Cephaloscyllium Cephalurus Galeus Halaelurus Haplolepharus Holohalaelurus Parmaturus Pentanchus Poroderma Schroederichthys Scyliorhinus The cat sharks or catsharks are a large family (Scyliorhinidae) of sharks, with over 110 species recorded. ...
Orders Rajiformes - common rays and skates Pristiformes - sawfishes Torpediniformes - electric rays See text for families. ...
Binomial name Tursiops truncatus Montagu, 1821 Bottlenose Dolphin range (in blue) The Bottlenose Dolphin (Tursiops truncatus) is the most common and well-known dolphin species. ...
Reproduction Females become sexually mature at about 3 m (10 ft), while males become sexually mature at 2.9 m (9.5 ft). They are viviparous and females give birth to a litter of 6 to 14 pups. After 16 months gestation the pups are delivered at a size of approximately 95 cm (3 feet). A viviparous animal is an animal employing vivipary, a method of reproduction in which the embryo develops inside the body of the mother from which it gains nourishment, and not from an egg. ...
Gestation is the carrying of an embryo or fetus inside a female viviparous animal. ...
Habitat The dusky shark is found worldwide in warm temperate continental waters extending from the surface down to a maximum depth of 400 m. Scuba divers can see juveniles at Sydney's Shelly Beach.
Similar species Sandbar sharks, and bignose sharks have higher first dorsal fins originating farther forward. The dusky shark is hardest to distinguish from the sandbar shark which has a smaller maximum size. Bignose sharks have longer snouts. The silky shark has the second dorsal fin with free tip length usually more than twice fin height. The night shark has green eyes. Bull sharks and spinner sharks lack interdorsal ridges. SANDBAR SHARK Order - Carcharhiniformes Family - Carcharhinidae Genus - Carcharhinus Species - plumbeus Taxonomy The sandbar shark was described by Nardo in 1827 as Squalus plumbeus based on a specimen taken from the Adriatic Sea. ...
Binomial name Carcharhinus altimus (Springer, 1950) Range of bignose shark The bignose shark, Carcharhinus altimus, is a requiem shark of the family Carcharhinidae, found circumglobally between latitudes 40° N and 34° S, at depths of between 25 and 500 m. ...
Dorsal Fin of the Orca A dorsal fin is a fin located on the backs of fishes, whales, dolphins and porpoises. ...
Binomial name Carcharias falciformis (Müller & Henle, 1839) The silky shark (Carcharias falciformis) is a large pelagic shark of tropical and warm temperate seas. ...
Binomial name Carcharhinus signatus (Poey, 1868) The night shark, Carcharhinus signatus, is a requiem shark of the family Carcharhinidae, found in subtropical western Atlantic Ocean waters between latitudes 43° N and 43° S, from the surface to 600 m. ...
Binomial name Carcharhinus leucas (Müller and Henle, 1839) Range of bull shark The bull shark, Carcharhinus leucas, also known as the bull whaler, Zambezi River shark or colloquially Zambi, is common worldwide in warm, shallow waters along coasts. ...
Binomial name Carcharhinus brevipinna (Müller & Henle, 1839) The spinner shark, Carcharhinus brevipinna, is a requiem shark of the family Carcharhinidae, found in the western Atlantic Ocean between latitudes 40° N and 38° S. Its length is up to about 3 m. ...
Danger to humans The dusky shark has not been linked to many attacks although it is considered potentially harmful. This is due in large part to its imposing size and propensity to dwell in shallow coastal waters.
References - Shark Specialist Group (2000). Carcharhinus obscurus. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 09 May 2006. Database entry includes justification for why this species is near threatened
- "Carcharhinus obscurus". FishBase. Ed. Ranier Froese and Daniel Pauly. November 2005 version. N.p.: FishBase, 2005.
- Carcharhinus obscurus (TSN 160268). Integrated Taxonomic Information System. Accessed on 30 January 2006.
The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species. ...
The World Conservation Union or International Union for Conservation of Nature and Natural Resources (IUCN) is an international organization dedicated to natural resource conservation. ...
FishBase is a comprehensive database of information about fish. ...
Please note that the ITIS system URL has changed (25 September 2006). ...
January 30 is the 30th day of the year in the Gregorian calendar. ...
2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ...
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