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24.05.2016 admin
Terms of Use - The displayed portlet may be used as a link from your website to ARKive's online content for private, scientific, conservation or educational purposes only. MyARKive offers the scrapbook feature to signed-up members, allowing you to organize your favourite ARKive images and videos and share them with friends. GenusCentrophorus (1)Found lurking in deep waters, the gulper shark (Centrophorus granulosus) is a long and slender fish with a long snout and large, green eyes.
Gulper shark biologyThe gulper shark inhabits deep waters, living in schools and predating on small fish and on invertebrates such as hake and cephalopods (1) (2).
This species can live for more than 30 years, with the female gulper shark reaching maturity between 12 and 16 years, and the male between 7 and 8 years (1). Gulper shark habitatA demersal species, the gulper shark is found lurking on or near the substrate on upper slopes and along continental shelves at depths of up to 1,400 metres. Globally, there is a general trend for fisheries to exploit deeper fishing grounds using methods such as bottom trawling and bottom longlines.


Gulper shark conservationCurrently in the northwest and southeast Atlantic there are no specific conservation measures in place for the gulper shark.
AuthenticationThis information is awaiting authentication by a species expert, and will be updated as soon as possible. The juvenile gulper shark is lighter than the adult, and has white-tipped dorsal and caudal fins (2) (3). The unfertilised egg cell of the gulper shark reaches one of the largest cellular sizes described for any animal, weighing between 143 and 370 grams. It is found in the Atlantic, Pacific and Indian Oceans as well as the Mediterranean and Black Sea. Population levels of the gulper shark have decreased by 80 to 95 percent in the northeast Atlantic since 1990 (1).
In 2005, the General Fisheries Commission for the Mediterranean (GFCM) banned fishing at depths below 1,000 metres in the Mediterranean; however, the gulper shark can often be found above this depth (1).


Even with moderate fishing levels, the low reproductive rate of the gulper shark means that population numbers may be severely depleted if not properly managed (1). In the Mediterranean, gulper shark aggregations are targeted by fisheries using longlines and gillnets (1) (5). The International Council for the Exploration of the Sea (ICES) has also recommended that there should be no deepwater fisheries of sharks (5). The components of the egg and any unfertilised eggs are used to nourish the developing pup, which is then born live (4).



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