brahmaputra bull shark

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[8] Its size at birth is 56 to 61 cm (22 to 24 in), growing to an estimated 178 cm (70 in) at maturity, with a maximum size of about 204 cm (80 in). (EN). [15], It is probably viviparous, with a yolk-sac placenta (speculation through analogy to related species of carcharhinids). The Ganges shark, as its name suggests, is largely restricted to the rivers of eastern and northeastern India, particularly the Hooghly River of West Bengal, and the Ganges, Brahmaputra, and Mahanadi in Bihar, Assam, and Odisha, respectively. Jan 16, 2020 - ganges shark - The Ganges shark is a critically endangered species of requiem shark found in the Ganges River and the Brahmaputra River of Bangladesh and India. Ganges Shark - Glyphis gangeticus The Ganges shark (Glyphis gangeticus) is a critically endangered species of requiem shark found in the Ganges River (Padma River) and the Brahmaputra … Also, a second dorsal fin that is about half the height of first dorsal is distinct to this species. [9] The size at birth or maturity is unknown for any other Glyphis species. A specimen photographed in 2011 by natural history journalist Malaka Rodrigo at Negombo fish market in Sri Lanka prompted researcher Rex de Silva to speculate on whether the species could occasionally be carried south of its normal range by ocean currents. Typically found in the Ganga, Hooghly, Mahanadi, and Brahmaputra rivers of India, the distribution of the species recently expanded when, as the result of various genetic studies, the Borneo river shark (G. fowlerae) and the Irrawaddy river shark (G. siamensis) were reclassified as part of the Ganges shark species. A specimen collected 84 km upstream of the mouth of the Hooghly River at Mahishadal in 2001 was identified as G. gangeticus, but on photographs of the jaw only. It can reach a length of 78 cm (31 in). It also eats human corpses that the local population float on the river. What Do Bull Sharks Eat? Expeditions in 2010 and 2011 failed to find any, and while fishermen recognised the shark, they have not been seen for many years. In India, the bull shark is often called the Sunderbans or Ganges shark and is considered a delicacy for Bengali fish curries. They are found to a depth of 150 m, but does not usually swim deeper than 30 m.[3] The anal fin is slightly smaller than the second dorsal fin and the pectoral fins are broad. Species With Barcodes: 1. Glyphis gangeticus bio-material GN2669,[21] reported in a 2012 paper on DNA sequencing in shark and ray species. They are found in many major rivers, including the Ganges, the Brahmaputra and the Mississippi. With such limited visibility typical of many tropical rivers and estuaries, other senses − such as hearing, smell and electroreception − are likely used for predation. The tooth row counts are 32–37/31–34. The eyes of the Ganges shark are minute, suggesting that it may be adapted to turbid water with poor visibility, such as occurs in the Ganges River and the Bay of Bengal. The bull shark (Carcharhinus leucas), also known as the "Zambezi shark" (informally "zambi") in Africa, and "Lake Nicaragua shark" in Nicaragua, is a requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers. Ganges shark. The Ganges shark (Glyphis gangeticus) is a critically endangered species of requiem shark found in the Ganges River (Padma River) and the Brahmaputra River of Bangladesh and India. It is known for its aggressive nature, and presence in warm, shallow brackish and freshwater systems including estuaries and rivers. No records exist between 1867 until 1996, and the 1996 records have not been confirmed as G. gangeticus. However, the holotype was apparently lost or misplaced in the British Museum of Natural History. The mouth is long, broad, and extends back and up towards the eyes. Lifespan-The average lifespan of a bull shark is 12 to 16 years, but in captivity, they can survive for 30 years. It is often confused with the more common bull shark, which also inhabits the Ganges River Found in: Indian Ocean, Mississippi River, Brahmaputra River, More. It is worth noting that the size at birth or maturity is unknown for any other Glyphis species, save the speartooth shark, for which adult size has recently been obtained. It is often confused with the more common bull shark (Carcharhinus leucas), which also inhabits the Ganges River and is sometimes incorrectly referred to as the Ganges shark. [6] The specimen is a 60-cm-long immature male. Leading shark expert Leonard Compagno emphasised the need to check the dentition and the dorsal fin proportions in order to confirm the specimen as a Ganges shark, stating that it could also be one of the three other named species. Some researchers consider Ganges sharks to be amphidromous, covering more than 100 km in both directions. It seems the Bull Shark favors the Atlantic, Indian, and Pacific Oceans. Etymology. The Ganges shark does not live in salt water, unlike the Bull shark, which also inhabits the Ganges River, and the two are often mistaken for one another. [6], A typical requiem shark in its external appearance, it is stocky, with two spineless dorsal fins and an anal fin. The name bull shark comes from the shark's stocky shapes, broad, flat snout and aggressive, unpredictable behavior. In Africa it is often called Zambezi River Shark or just Zambi. #1005 (no title) [COPY]25 Goal Hacks Report – Doc – 2018-04-29 10:32:40 [14], G. gangeticus is known to inhabit only freshwater, inshore marine, and estuarine systems in the lower reaches of the Ganges-Hooghly River system. ... India, Australia, and Vietnam. [4], G. gangeticus is a little-known species that is yet to be adequately described. If Carcharias murrayi (Günter, 1887) can be considered a junior synonym of this species, one was found near Karachi, Pakistan. The bull shark is a requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers. sandbar shark vs bull shark. [10] However, in the Bay of Bengal, G. gangeticus was found to feed heavily on dasyatid stingrays, which spend much of their time on the bottom. Formerly the Borneo river shark (Glyphis fowlerae) and the Irrawaddy river shark (Glyphis siamensis) were considered to represent two other species in the genus Glyphus. Animals potentially impacted include the endangered Irrawaddy dolphin and the critically endangered Ganges shark. The shark may be naturally rare in this area and highly restricted in its range. Its size at birth is 56 centimetres (22 in) to 61 centimetres (24 in), growing to an estimated 178 centimetres (70 in) at maturity, with a maximum size of about 204 centimetres (80 in). As only a few specimens exist, naturally there is little material available for genetic sampling. As such, it is known by various names in the region: A [5] However, subsequent authors doubted the validity of this species, regarding it as an abnormal bull shark (Carcharhinus leucas), until in 2005 shark systematist Leonard Compagno recognized it as distinct member of the genus Glyphis.

Aesthetic Identification: The Ganges shark is uniformly grey to brownish in color with no visible markings. [6], Some researchers consider G. gangeticus to be amphidromous, covering more than 100 km in both directions. The Bull Shark, scientifically known as Carcharhinus Leucas, is one of the shark species that can live in both seawater and freshwater and is commonly found in tropical and subtropical areas.This species is known by several different names depending on its whereabouts: Zambezi shark, Nicaragua shark, Fitzroy Creek whaler, Swan River whaler or Ganges River shark. The bull shark (Carcharhinus leucas), also known as the "Zambezi shark" (informally "zambi") in Africa, and "Lake Nicaragua shark" in Nicaragua, is a requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers. The Ganges Shark is known only from the lower parts of the Ganges-Hooghli river system, West Bengal, India; it is endemic to India [1, 4, 5]. 4. Chondrichthyes Wiki is a FANDOM Lifestyle Community. Thought to be consumed locally for its meat, the Ganges shark is caught by gillnet, and its oil, along with that of the South Asian river dolphin, is highly sought after as a fish attractant. Froese, Rainer and Pauly, Daniel, eds. (EN). Kali River Goonch Catfish. A typical requiem shark in its external appearance, it is stocky in build, with two spineless dorsal fins and an anal fin. The shark is endemic to India. The anal fin is slightly smaller than the second dorsal fin and the pectoral fins are broad. Take your favorite fandoms with you and never miss a beat. It was collected in the 19th century and described as Carcharias siamensis by Austrian ichthyologist Franz Steindachner, in Annalen des Naturhistorischen Museums in Wien (volume 11, 1896). [13], In theory, G. gangeticus could occur in shallow marine estuaries; however, no marine records of the species have been verified to date. The tooth row counts are 32–37/31–34, respectively. It is often confused with the more common bull shark (Carcharhinus leucas), which also inhabits the Ganges River and is sometimes incorrectly referred to as the Ganges shark. The Ganges shark has much narrower, higher, upper teeth and slender-cusped, less heavily built lower teeth than the bull shark does. Most of these attacks were previously thought to be great whites. Bull sharks are large, stout predators found in tropical and subtropical waters around the world, typically close to coastlines. The bite force of a tiger shark is 3,300 kg per cm square. Such small sharp teeth are more suitable for fish-impaling and less useful for dismembering tough mammalian prey than the stout teeth of the bull shark. [3] With such limited visibility typical of many tropical rivers and estuaries, other senses − such as hearing, smell, and electroreception − are likely used for predation. The Ganges sharks is a critically endangered species of Shark found in the Ganges River and the Brahmaputra River of India. Scientific name: Carcharhinus leucas. The bull shark, ''Carcharhinus leucas'', also known as Zambezi shark or unofficially known as Zambi in Africa and Nicaragua shark in Nicaragua, is a shark common worldwide in warm, shallow waters along coasts and in rivers. Captiva Fishing Guide Report: Wednesday, December 2: Bull Shark, Catch & Release, Captain Joe’s Charters – the weather is great, no red tide and a lot of good fish have moved back into the gulf, bay, and passes: redfish, snook, seatrout, and sharks are currently present. Some of their favorite rivers include the Brisbane River, Amazon River, Ganges River, Brahmaputra River, Potomac River and the Mississippi River. [23] It is also believed to be part of the Asian shark fin trade. Redfish & snook are regulated as catch & release at this time. Compagno (1997) recommends an in-depth survey of fishing camps and landing sites, along with a sampling program in the Ganges system to determine the current status of this shark along with other gangetic elasmobranchs such as stingrays and sawfish. However, in the Bay of Bengal, G. gangeticus was found to feed heavily on dasyatid stingrays, which spend much of their time on the bottom. Sharks of the world. There is doubt about the effectiveness of this measure, however, because of difficulties in enforcement. The Bull shark has traveled a great distance, 2,500 miles, up the Amazon River to Iquitos in Peru, and north Bolivia. Because its eyes are tilted towards its back rather than to the sides or bottom (as is the case in most carcharhinids), it is thought that the shark may swim along the bottom and scan the water above it for potential prey back-lit by the sun. [19] No records exist between 1867 and 1996, and the 1996 records have not been confirmed as G. gangeticus. The bull shark is common in the coastal areas of warm oceans, in rivers and lakes, and in both salt and fresh water. Specimens with Barcodes: 1 The shark’s small eyes and slender teeth suggest that it is primarily a fish-eater and is adapted to turbid, murky water. The Ganges shark is probably viviparous, with a yolk-sac placenta (speculation through analogy to related species of carcharhinids).
However, unlike the bull shark, the Ganges shark has two spineless dorsal fins (with the second being half the length of the first), an anal fin, and a broad, rounded snout that is significantly shorter than the width of the mouth.
However, unlike the bull shark, the Ganges shark has two spineless dorsal fins (with the second being half the length of the first), an anal fin, and a broad, rounded snout that is significantly shorter than the width of the mouth. [27], The biological differences between the Ganges shark and bull shark also point to a lower likelihood of attacks on humans by the Ganges shark. The second dorsal fin is relatively large, but much smaller than the first (about half the height). [13], The single Irrawaddy river shark specimen stems from an area of intensive artisanal fishing, mainly gillnetting, but also line and electrofishing. The status of a Borneo specimen from Sampit remains unclear. It is often confused with the more common bull shark, which also inhabits the Ganges River The Ganges shark (Glyphis gangeticus) is a critically endangered species of requiem shark found in the Ganges River and the Brahmaputra River of India. However, their life history cycle is probably similar to other river sharks, characterized by long gestation, slow growth, delayed maturity, and small litter size. female bull sharks migrate more towards brackish water when they are ready to give birth. Sphyrna mokarran. River Ganga supports many bird species that are uniquely found in India. The Bull shark is common in costal areas of warm oceans, in rivers and lakes, both in salt and fresh water. In theory, G. gangeticus could occur in shallow marine estuaries; however there are no verified marine records of the species to date, though the discoveries of it being present in such areas as Borneo and the Irrawaddy Rivers may indicate it otherwise can occur there. Despite bull sharks’ ability to live in freshwater, they are not actual freshwater sharks. There is a widespread, albeit widely dispersed, artisanal fishery for both local consumption and international trade. It closely resembles the Ganges shark, but has more vertebrae (209 versus 169) and fewer teeth (29/29 versus 32–37/31–34). Jan 16, 2020 - ganges shark - The Ganges shark is a critically endangered species of requiem shark found in the Ganges River and the Brahmaputra River of Bangladesh and India. However, only the head of the shark appears in the photo. The biological differences between the Ganges shark and bull shark also point to a lower likelihood of attacks on humans by the Ganges shark. Species With Barcodes: 1, The NCBI Taxonomy database has one record of mitochondrial genetic material (1,044 base pairs of linear DNA): In the Atlantic it is found from Massachusetts to South Brazil and from Morocco to Angola, in the Pacific it is found from South Africa to Kenya, India, Vietnam to Australia and from Baja California … The shark is endemic to India. It is also believed to be part of the Asian shark fin trade, though this is uncertain. Etymology Bull Shark The name comes from bull shark pushed the shark shape, broad, flat snout and aggressive unpredictable behavior. This is likely because bull sharks are known to travel long distances into freshwater systems and may co-exist in the same waters as the Ganges shark. The Bull shark has traveled a great distance, 2,500 miles, up the Amazon River to Iquitos in Peru, and north Bolivia. However, the holotype was apparently lost or misplaced in the British Museum of Natural History. It is uniformly grey to brownish in color, with no discernible markings. The first dorsal fin originates over the last third of the pectoral fins, with a free rear tip that is well in front of the pelvic fins. Bull shark actively feeds on stingrays, sea urchins, turtles , sea cucumbers, krill, dolphins, lobsters, crabs , small bony fish and birds. It was also mentioned as the most critically endangered shark species in 2015 on Discovery.com's Shark Week page. The bull shark (Carcharhinus leucas), also known as the "Zambezi shark" (informally "zambi") in Africa, and "Lake Nicaragua shark" in Nicaragua, is a requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers. It inhabits the River Hooghly in West Bengal, as well as the rivers Ganges, Brahmaputra, and the Mahanadi. The Ganges shark (Glyphis gangeticus) is a critically endangered species of requiem shark found in the Ganges River (Padma River) and the Brahmaputra River of Bangladesh and India. Bull shark also swims in freshwater of West Bengal’s Brahmaputra Rivers and Lake Nicaragua. This makes them even more vulnerable to becoming extinct, as they are unable to adapt to the rapid and extreme changes caused by humans to their environment. Compagno (1997) recommends an in-depth survey of fishing camps and landing sites, along with a sampling program in the Ganges system to determine the current status of this shark along with other gangetic elasmobranchs such as stingrays and sawfish. These, including Ganges sharks, are protected under Schedule I, Part II A of the Wildlife Protection Act of India. This makes them even more vulnerable to becoming extinct, as they are unable to adapt to the rapid and extreme changes caused by humans to their environment.[6]. Since little is known about the behaviour of genuine freshwater river sharks, and since G. gangeticus is critically endangered, contact with humans is very rare. The lower front teeth have long, hooked, protruding cusps with unserrated cutting edges along the entire cusp, but without spear-like tips and with low cusplets on feet of crowns.

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