The world's shark population is experiencing significant decline with perhaps 100 million or more sharks being lost every year, according to a study published this week in Marine Policy.
Numbers of five species of sharks in the Mediterranean have dropped sharply over the last two centuries, a study says.
WASHINGTON, June 30 (UPI) -- The Mediterranean Sea shark population fell 97 percent in the past two centuries and 19 shark species face extinction, researchers have concluded.
... small shark species, there seems to be super-sized confusion about its population status. But for researchers at the University ... is clear - definite changes have occurred to spiny dogfish shark populations in the past two decades ...
SYDNEY, Feb. 28 (UPI) -- European scientists say the decline in shark populations might be the result of gender segregation among the predatory fish.
LONDON, May 23 (UPI) -- With shark populations tumbling around the world, Chinese cooks are turning to manta and devil rays to fill their shark fin soup pots.
... . "We know, for instance, that in many of these nations, shark populations have been decimated as a result of shark fining. Unfortunately the regulation of this activity remains largely ineffective, most commonly ...
... scientists and fishery resource managers to monitor shark populations and their role in marine ecosystems. NOAA ... -term data sets that are used to determine the health of shark populations. The survey takes six weeks ...
(PhysOrg.com) -- Marine biology graduate student Austin Gallagher has studied the dwindling shark population around the world -from the waters of the South Pacific to those off Southern California.
... , and that they are all closely related and distinct from other known white shark populations, suggests that it is possible to conduct long ... to appreciate how vulnerable the northeastern Pacific white shark population could become if too many individuals were taken ...
To counteract falling shark populations, Australia has signed an agreement to protect several major species.
... , Mitchell said, but there is a lot of evidence for a human origin. "The shark population in Belize, for example, is a big tourist ... site hosted more varieties of drug-resistance than sharks in the same waters. This may reflect differences in their age ...
Robin Taylor writes that while shark attacks on people make headlines, the public is less aware of the depleting shark population due to overfishing and other activities.
... on distribution, population status, or both. Musick served as co-chair of the IUCN Shark Specialist ... the longest running fishery-independent study of shark populations in the world. To reduce the threat to cartilaginous ...
... , as well as sharks and dugongs in Australia. In each case, the major predators help control the populations ... have been observed in the North Atlantic Ocean, Ripple said. As shark populations were diminished by overfishing, the number of rays ...
