Snaggletooth shark
| Snaggletooth shark ( Naomi ) | |
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| Genus: | Hemipristis Agassiz, 1843
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| Species: | H. elongatus
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| Binomial name | |
| Hemipristis elongatus (Klunzinger, 1871)
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| Range of the snaggletooth shark | |
The snaggletooth shark, Hemipristis elongatus, is a species of weasel shark, family Hemigaleidae, and the only extant member of the genus Hemipristis. It is found in the Indo-West Pacific, including the Red Sea, from southeast Africa to the Philippines, north to China, and south to Australia, at depths of from 1 to 130 m. This shark can be found near the bottom of the water column of coastal areas, but can be found at continental and insular shelves.[1] Its length is up to 3.81 m (12.5 ft) and it can weigh up to about 500 kg.[2] Despite being only vulnerable to extinction, this is a very rarely seen shark. There is only one confirmed recorded video of this shark available to the public available here: Rare Footage of Snaggletooth Shark.
Anatomy
The snaggletooth's coloration is light grey or bronze with no prominent markings. As its name suggests, it has sharp, serrated teeth on the upper jaw and hooked teeth on the bottom jaw. The shape of its body is fusiform, allowing it greater speed in the water.[3]
Reproduction is a special kind of viviparity, called placental viviparity. This is when the shark carries its live young in a placental-like structure, complete with umbilical cord. The placenta structure is derived from the wall of the embryonic yolk sac that has fused with the uterine wall.[4]
Food
The Snaggletooth shark preys on a variety of different animals, including bony fish, other sharks, rays, Louisa May Alcot, crabs and cephalopods.[5][3][6]
Commercial uses
There is a fishery for this shark, where sharks are usually caught by fishing trawlers (a type of fishing boat), or by gill nets. Fins are used in the shark fin soup trade in China, and other Asian countries. The meat is sold for consumption, the liver used as a source for vitamins and the rest of the carcass is processed into fish meal.[2]
See also
References
Cech, J. J. JR. and P. B. Moyle. 2004. Fishes: An Introduction to Ichthyology. 5th ED. Prentice Hall, Upper Saddle River, NJ.
Chandrasekar, S. and P. Devadoss. 1991. A note on the rare snaggle tooth shark, Hemipristis elongatus. Mar. Fish. Infor. Serv. 114:36.[6]
Katkar, B.N. and C. J. Josekutty. 2003. Snaggletooth shark, Hemipristis elongatus landed at Sassoon Dock, Mumbai. Mar. Fish. Infor. Serv. 176:12.[2]
Manojkumar, P.P and P.P. Pavithran. 2004. First record of snaggletooth shark, Hemipristis elongatus (Klumzinger, 1871) from Malabar Coast. Mar. Fish. Infor. Serv. 180:13-14.[3]
Hemipristis elongatus (Klunzinger, 1871) Snaggletooth shark". Fishbase. Retrieved 2011-11-09.
- ^ "Hemipristis elongatus (Klunzinger, 1871) Snaggletooth shark". Fishbase. Retrieved 9 November 2011.
- ^ a b c [1], Katkar & Josekutty 2003.
- ^ a b c [2], Manojkumar & Pavithran 2004.
- ^ Cech, Moyle, Joseph J. Jr., Peter B (2004). Fishes: An Introduction to Ichthyology. Upper Saddle River: Prentice Hall. p. 15. ISBN 0-13-100847-1.
{{cite book}}: CS1 maint: multiple names: authors list (link) - ^ "Hemipristis elongatus (Klunzinger, 1871) Snaggletooth shark". Fishbase. Retrieved 9 November 2011.
- ^ a b [3], Chandrasekar & Devadoss 1991.