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Aggressive overfishing threatens to force some shark species to extinction , and a new study puts annual shark deaths at 100 million .
" Our psychoanalysis shows that about one in 15 shark gets killed by piscary every class , " subject loss leader Boris Worm , a prof of biological science at Canada ’s Dalhousie University , said in a program line . " With an increase demand for their fins , sharks are more vulnerable today than ever before . "
Shark fins drying in the sun in Kaohsiung before processing. 30 percent of the world’s shark species are threatened or near threatened with extinction.
Based on useable data point forshark deathsand estimates of unreported illegal catches , the researchers estimated that 100 million sharks were kill in 2000 and 97 million in 2010 . But since scientists miss sufficient datum on shark catches , they say the real turn of yearly shark deaths could possibly be between 63 million and 273 million .
shark are angle for their essence , liver crude oil , cartilage and valuable fins , which are hack off , often from live shark , to be used inshark fin soup , an ancient and prized fragility in East Asia . Since sharks have slow increase and reproductive rates , it can be bad for their populations to bounce back from big losses .
Conservationists say the depletion of shark population is concerning because as vertex marauder , they help balance ecosystems in the world ’s ocean . [ On the Brink : A Gallery of Wild Sharks ]
" In working with tiger sharks , we ’ve seen that if we do n’t have enough of these predators around , it causes cascading change in the ecosystem , that dribble all the means down to nautical plant , " pronounce study research worker Mike Heithaus , a Florida International University life scientist .
On March 3 , hundred of delegate from 177 different countries will deign on Bangkok for the meeting of the Convention on International Trade in Endangered Species of Wild Fauna and Flora ( CITES ) . On the order of business will be increased business deal protection for five mintage of sharks — the oceanic whitetip , Lamna nasus and three types of hammerheads — which are hunted for their tailfin .
" A simple suffrage ' yes ' to support their itemization could turn things around for some of the world ’s most threatened shark coinage , " Elizabeth Wilson , manager of orbicular shark conservation at the Pew Charitable Trusts ' environmental organization , said in a command today . " Countries should seize this chance to protect these top predators from extinction . "
Sharks have a praseodymium problemthat might be pain their chances of natural selection . A written report out last year found that a majority of the media coverage they get need shark attacks on man , which does n’t reflect how rare these scary encounters are . In 2012 , there were 80 confirmedshark attacks worldwide , but only seven of them were deadly , according to the University of Florida ’s International Shark Attack File .
The Modern research was detail online in the journal Marine Policy .
