Carpet shark
Carpet sharks Temporal range:
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Spotted wobbegong (Orectolobus maculatus) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Chondrichthyes |
Subclass: | Elasmobranchii |
Clade: | Neoselachii
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Subdivision: | Selachimorpha |
Superorder: | Galeomorphii |
Order: | Orectolobiformes Applegate, 1972 |
Families | |
See text |
Carpet sharks are
Characteristics
The carpet sharks are a diverse group of sharks with differing sizes, appearances, diets, and habits. They first appeared in the fossil record in the Early Jurassic; the oldest known orectolobiform genera are Folipistrix (known from Toarcian to Aalenian of Belgium and Germany), Palaeobrachaelurus (Aalenian to Barremian) and Annea (Toarcian to Bajocian of Europe).[1] All species have two dorsal fins and a relatively short, transverse mouth that does not extend behind the eyes. Besides the nostrils are barbels, tactile sensory organs, and grooves known as nasoral grooves connect the nostrils to the mouth. Five short gill slits are just in front of the origin of the pectoral fin and the fifth slit tends to overlap the fourth one.[2] A spiracle occurs beneath each eye which is used in respiration. The only exception to this rule is the whale shark, the spiracles of which are situated just behind the eyes.[3] Carpet sharks derive their common name from the fact that many species have a mottled appearance with intricate patterns reminiscent of carpet designs. The patterning provides camouflage when the fish is lying on the seabed.[4] The largest carpet shark is the whale shark (Rhincodon typus) which can grow to a length of 14 m (46 ft). It is the largest species of fish, but despite its size, is not dangerous, as it is a filter feeder, drawing in water through its wide mouth and sifting out the plankton. The smallest carpet shark, at up to about 30 cm (12 in) long, is the barbelthroat carpet shark, (Cirrhoscyllium expolitum).[3] Some of the most spectacularly coloured members of the order are the necklace carpet shark (Parascyllium variolatum), the zebra shark (Stegostoma fasciatum), and the ornate wobbegong (Orectolobus ornatus). Nurse sharks and whale sharks have a fringe of barbels on their snouts, and barbelthroat carpet sharks (Cirrhoscyllium expolitum) have barbels dangling from their throat regions.
Behaviour
Most carpet sharks feed on the seabed in shallow to medium-depth waters, detecting and picking up molluscs, crustaceans, and other small creatures.
The methods of reproduction of carpet sharks varies. Some species are
Distribution
Carpet sharks are found in all the oceans of the world but predominantly in tropical and temperate waters. They are most common in the western Indo-Pacific region and are usually found in relatively deep water.[3]
Classification
The order is small, with seven families in 13 genera and with a total of around 43 species:
Family | Image | Common name | Genera | Species | Description |
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Brachaeluridae
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Blind sharks
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1 | 2 | Blind sharks are found in shallow coastal waters up to 110 m (360 ft) deep off the eastern coast of Australia.[6] They are distinguished by the presence of long barbels, large spiracles, and grooves around the nostrils. They have two dorsal fins, placed close together on the back, and a relatively short tail. Blind sharks feed on small fish, cuttlefish, sea anemones, and crustaceans. The female retains the eggs in her body until they hatch (ovoviviparity), during which time the embryos feed solely on the egg yolk.[6] Despite their name, blind sharks are not blind; their name comes from their habit of closing their eyes when taken out of water.[6] There are only two species.
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Ginglymostomatidae | Nurse sharks | 3 | 4 | bottom-dwellers. Nurse sharks typically attack humans only if directly threatened. The largest species can reach a length of 4.3 m (14 ft).[7]
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Hemiscylliidae | Bamboo sharks | 2 extant 4 extinct | 16 extant 6 extinct | Bamboo sharks, sometimes called longtail carpet sharks, are distinguished by a relatively long snout with subterminal nostrils.[8] They are relatively small sharks, with the largest species reaching only 121 cm (48 in) in length. They have elongated, cylindrical bodies, with short barbels and large spiracles. As their common name suggests, they have unusually long tails, exceeding the length of the rest of their bodies. They are found in shallow waters of the tropical Indo-Pacific. They are sluggish fish, feeding on bottom-dwelling invertebrates and smaller fish.[9] | |
Orectolobidae | Wobbegong sharks | 3 extant 1 extinct | 12 extant 1 extinct | Wobbegong sharks are well camouflaged with symmetric, bold patterns resembling a carpet. The camouflage is improved by the presence of small weed-like whisker lobes surrounding the jaw, which help to camouflage it and act as sensory barbs.[10] Wobbegongs are bottom-dwelling and spend much time resting on the sea floor. They are found in shallow temperate and tropical waters of the western Pacific Ocean and eastern Indian Ocean, chiefly around Australia and Indonesia. Most species have a maximum length of 1.25 m (4.1 ft) or less, and the largest reach about 3 m (9.8 ft) in length. Wobbegongs are generally not dangerous to humans unless provoked.[11] | |
Parascylliidae | Collared carpet sharks | 2 | 8 | Collared carpet sharks have elongated, slender bodies, cat-like eyes, and barbels behind their chins. They are found only in the shallow waters of the western Pacific. They are relatively small sharks, with the largest species reaching no more than 91 cm (2.99 ft) in adult length.[12] | |
Rhincodontidae | Whale sharks
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1 | 1 | The IUCN has assessed it as Endangered.[14]
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Stegostomatidae | Zebra sharks
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1 | 1 | nocturnal and spend most of the day resting motionless on the sea floor. They are innocuous to humans. The IUCN has assessed them as vulnerable and some evidence indicates their numbers are dwindling.[15]
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Extant species
Order Orectolobiformes
- Family Brachaeluridae Applegate(blind sharks)
- Genus Brachaelurus Ogilby, 1908
- Brachaelurus colcloughi(Ogilby, 1908) (bluegrey carpetshark)
- J. G. Schneider, 1801) (blind shark)
- Genus Brachaelurus Ogilby, 1908
- Family Ginglymostomatidae Gill, 1862 (nurse sharks)
- Genus Ginglymostoma J. P. Müller & Henle, 1837
- Ginglymostoma cirratum Bonnaterre, 1788 (nurse shark)
- Genus Nebrius Rüppell, 1837
- Lesson, 1831) (tawny nurse shark)
- Genus Pseudoginglymostoma Dingerkus, 1986
- Günther, 1867) (short-tail nurse shark)
- Genus Ginglymostoma J. P. Müller & Henle, 1837
- Family Hemiscylliidae Gill, 1862 (bamboo sharks)
- Genus Chiloscyllium J. P. Müller & Henle, 1837
- Chiloscyllium arabicum Gubanov, 1980 (Arabian carpetshark)
- Chiloscyllium burmensis Dingerkus & DeFino, 1983 (Burmese bamboo shark)
- Chiloscyllium griseumJ. P. Müller & Henle, 1838 (grey bamboo shark)
- Chiloscyllium hasselti Bleeker, 1852 (Hasselt's bamboo shark)
- Chiloscyllium indicum (J. F. Gmelin, 1789) (slender bamboo shark)
- Chiloscyllium plagiosum (Anonymous, referred to Bennett, 1830) (white-spotted bamboo shark)
- Chiloscyllium punctatumJ. P. Müller & Henle, 1838 (brownbanded bamboo shark)
- Genus Hemiscyllium J. P. Müller & Henle, 1837
- , 1824) (Indonesian speckled carpetshark)
- Hemiscyllium galei G. R. Allen & Erdmann, 2008[17] (Cenderwasih epaulette shark)
- Hemiscyllium hallstromi Whitley, 1967 (Papuan epaulette shark)
- Hemiscyllium halmahera G. R. Allen, Erdmann & Dudgeon, 2013[18] (Halmahera epaulette shark)
- Hemiscyllium henryi G. R. Allen & Erdmann, 2008[17] (Henry's epaulette shark)
- Hemiscyllium michaeli G. R. Allen & Dudgeon, 2010[19](Milne Bay epaulette shark)
- Hemiscyllium ocellatum (Bonnaterre, 1788) (epaulette shark)
- Hemiscyllium strahani Whitley, 1967 (hooded carpetshark)
- Hemiscyllium trispeculare J. Richardson, 1843 (speckled carpetshark)
- Genus Chiloscyllium J. P. Müller & Henle, 1837
- Family OrectolobidaeGill, 1896 (wobbegong sharks)
- Genus Eucrossorhinus Regan, 1908
- Eucrossorhinus dasypogon(Bleeker, 1867) (tasselled wobbegong)
- Genus Orectolobus Bonaparte, 1834
- , 2008 (floral banded wobbegong)
- Compagno, 2006.[21](western wobbegong)
- Orectolobus japonicus Regan, 1906 (Japanese wobbegong)
- , 2010 (Indonesian wobbegong)
- Orectolobus maculatus (Bonnaterre, 1788) (spotted wobbegong)
- Orectolobus ornatus (De Vis, 1883) (ornate wobbegong)
- , 2008 (dwarf spotted wobbegong)
- Orectolobus reticulatus Last, Pogonoski & W. T. White, 2008 (network wobbegong)
- Orectolobus wardiWhitley, 1939 (northern wobbegong)
- Genus SutorectusWhitley, 1939
- Sutorectus tentaculatus (W. K. H. Peters, 1864) (cobbler wobbegong)
- Genus
- Family Parascylliidae Gill, 1862 (collared carpet sharks)
- Genus Cirrhoscyllium H. M. Smith & Radcliffe, 1913
- Cirrhoscyllium expolitumH. M. Smith & Radcliffe, 1913 (barbelthroat carpetshark)
- Teng, 1959 (Taiwan saddled carpetshark)
- Cirrhoscyllium japonicum Kamohara, 1943 (saddle carpetshark)
- Genus Parascyllium Gill, 1862
- Parascyllium collare E. P. Ramsay & Ogilby, 1888 (collared carpetshark)
- , 2008 (elongate carpetshark)
- Parascyllium ferrugineum McCulloch, 1911 (rusty carpetshark)
- Parascyllium sparsimaculatum T. Goto& Last, 2002 (ginger carpetshark)
- A. H. A. Duméril, 1853) (necklace carpetshark)
- Genus Cirrhoscyllium H. M. Smith & Radcliffe, 1913
- Family Rhincodontidae (J. P. Müller & Henle, 1839) (whale sharks)
- Genus Rhincodon A. Smith, 1828
- Rhincodon typusA. Smith, 1828 (whale shark)
- Genus
- Family Stegostomatidae Gill, 1862 (zebra sharks)
- Genus Stegostoma J. P. Müller & Henle, 1837
- Stegostoma fasciatum (Hermann, 1783) (zebra shark)
- Genus
Fossil genera
The following fossil genera are recognized:[22][23]
- Order Orectolobiformes
- Genus †Akaimia Rees, 2010
- Genus †Annea Thies, 1982
- Genus †Dorsetoscyllium Underwood & Ward, 2004
- Genus †Galagadon Gates, Gorscak & Makovicky, 2019
- Genus †Heterophorcynus Underwood & Ward, 2004
- Genus †Folipistrix Kriwet, 2003
- Genus †Palaeorectolobus Kriwet, 2008
- Genus †Parasquatina Herman, 1982
- Genus †Phorcynis Thiollière, 1854
- Genus †Similiteroscyllium Fuchs, Engelbrecht, Lukeneder & Kriwet, 2017
- Family Brachaeluridae
- Genus †Eostegostoma Herman & Crochard, 1977
- Genus †Garrigascyllium Guinot et al., 2014
- Genus †Magistrauia Guinot, Cappetta & Adnet, 2014
- Genus †Palaeobrachaelurus Thies, 1983
- Genus †Paraginglymostoma Thies, 1982
- Genus †Parahemiscyllium Guinot, Cappetta & Adnet, 2014
- Family Ginglymostomatidae
- Genus †Cantioscyllium Woodward, 1889
- Genus †Delpitoscyllium Noubhani & Cappetta, 1997
- Genus †Ganntouria Noubhani & Cappetta, 1997
- Genus †Hologinglymostoma Noubhani & Cappetta, 1997
- Genus †Plicatoscyllium Case & Cappetta, 1997
- Genus †Protoginglymostoma Herman & Crochard, 1977
- Family Hemiscyllidae
- Genus †Acanthoscyllium (Pictet & Humbert, 1966)
- Genus †Adnetoscyllium Guinot, Underwood, Cappetta & Ward, 2013
- Genus †Almascyllium Cappetta, 1980
- Genus †Notaramphoscyllium Engelbrecht, Mörs, Reguero & Kriwet, 2017
- Genus †Pseudospinax Müller & Diedrich, 1991
- Family †Mesiteiidae Pfeil, 2021
- Genus †Mesiteia Gorjanovic-Kramberger, 1885
- Family Orectolobidae
- Genus †Cederstroemia Siverson, 1995
- Genus †Coelometlaouia Engelbrecht, Mörs, Reguero & Kriwet, 2017
- Genus †Cretorectolobus Case, 1978
- Genus †Eometlaouia Noubhani & Cappetta, 2002
- Genus †Gryphodobatis Leidy, 1877
- Genus †Orectoloboides Cappetta, 1977
- Genus †Restesia Cook et al., 2014
- Genus †Squatiscyllium Cappetta, 1980
- Family Parascyllidae
- Genus †Pararhincodon Herman in Cappetta, 1976
- Family Rhincodontidae
- Genus †Palaeorhincodon Herman, 1974
See also
References
- ^ .
- ^ Nelson, J. S. (1994). "Order Summary for Orectolobiformes". Fishbase. Retrieved 2013-10-12.
- ^ a b c d e Du Plessis; Amelia. "Orectolobiformes". Sharks. Retrieved 2013-10-11.
- ^ "Carpet shark". Encyclopædia Britannica online. Retrieved 2013-10-13.
- ^ Scales, Helen (2012-02-13). "Pictures: Shark Swallows Another Shark Whole". National Geographic: Daily News. Archived from the original on 2013-10-13. Retrieved 2013-10-13.
- ^ a b c Froese, Rainer, and Daniel Pauly, eds. (2009). "Brachaeluridae" in FishBase. January 2009 version.
- ^ Froese, Rainer, and Daniel Pauly, eds. (2011). "Ginglymostomatidae" in FishBase. February 2011 version.
- ISBN 92-5-101384-5.
- ^ Froese, Rainer, and Daniel Pauly, eds. (2009). "Hemiscylliidae" in FishBase. January 2009 version.
- ^ "Wobbegongs - five species encountered in Queensland". Queensland Primary Industries and Fisheries. 2009-03-02. Archived from the original on 2009-06-14. Retrieved 2009-06-14.
- ISBN 1-86436-091-7.
- ^ Froese, Rainer, and Daniel Pauly, eds. (2011). "Parascylliidae" in FishBase. February 2011 version.
- ^ Froese, Rainer; Pauly, Daniel (eds.). "Rhincodon typus". FishBase. Retrieved 17 September 2006.
- . Retrieved 11 November 2021.
- . Retrieved 11 November 2021.
- .
- ^ a b Allen & Erdmann (2008). "Two new species of bamboo sharks (Orectolobiformes: Hemiscylliidae) from Western New Guinea". Aqua (Miradolo Terme). 13 (3–4): 93–108.
- ^ Allen, G.R., Erdmann, M.V. & Dudgeon, C.L. (2013): Hemiscyllium halmahera, a new species of Bamboo Shark (Hemiscylliidae) from Indonesia. aqua, International Journal of Ichthyology, 19 (3): 123-136.
- ^ Allen & Dudgeon (2010). "Hemiscyllium michaeli, a new species of Bamboo Shark (Hemiscyllidae) from Papua New Guinea". Aqua International Journal of Ichthyology. 16 (1): 19–30.
- ^ Huveneers (2006). "Redescription of two species of wobbegongs (Chondrichthyes: Orectolobidae) with elevation of Orectolobus halei Whitley 1940 to species level" (PDF). Zootaxa. 1284: 29–51.
- .
- ^ "Extinct - valid species | Species | Shark-References". shark-references.com. Retrieved 2024-03-05.
- ^ "PBDB". paleobiodb.org. Retrieved 2024-03-05.
Further reading
- Compagno, Leonard (2002) Sharks of the World: Bullhead, mackerel and carpet sharks Volume 2, FAO Species Catalogue, Rome. ISBN 92-5-104543-7.