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Reef sharks threatened by overfishing
12-05-2006 · EurekAlert!Research by scientists at the ARC Centre of Excellence for Coral Reef Studies and James Cook University has warned that coral reef shark populations on the Great Barrier Reef are in the midst of a catastrophic collapse.
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Keywords: reef, sharks, threatened, overfishing, shark
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- Ongoing collapse of coral reef shark populations
12-04-2006 · EurekAlert!
Investigators have revealed that coral reef shark populations are in the midst of rapid decline, and that "no-take zones" -- reefs where fishing is prohibited -- do protect sharks, but only when compliance with no-take regulations is high. The findings, reported by William Robbins and colleagues at James Cook University and its ARC Centre of Excellence for Coral Reef Studies, appear in the December 5th issue of Current Biology.
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- Fish species plays surprise role in aiding coral reef recovery
12-18-2006 · EurekAlert!
In a study that marks progress in understanding the basis of coral reef recovery, researchers have revealed the critical importance of a rare batfish, Platax pinnatus, in promoting the return to health of a disturbed coral reef overgrown with algae. The findings bring to light a previously unrecognized role for the batfish species, which had not been considered a significant player in reef recovery after overfishing.
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- UF study: World shark attacks rise slightly but continue long-term dip
02-13-2007 · EurekAlert!
Shark attacks edged up slightly in 2006 but continued an overall long-term decline as overfishing and more cautious swimmers helped take a bite out of the aggressive encounters, new University of Florida research finds.
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- Long-lived deep-sea fishes imperiled by technology, overfishing
02-18-2007 · EurekAlert!
Many commercially prized fish from the depths of the world’s oceans are severely threatened by over-fishing and the species' ability to recover is constrained by the fishes' long lifespans and low reproductive success, a panel of experts said today at the annual meeting of the American Association of the Advancement of Science.
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- Conquest of land began in shark genome
08-14-2007 · EurekAlert!
University of Florida Genetics Institute scientists identify genetic activity in sharks required for the development of hands, feet, fingers and toes in limbed animals. The finding shows what was thought to be a relatively recent evolutionary innovation existed eons earlier than previously believed, potentially providing insight for scientists seeking ways to cure human birth defects.
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- Overfishing great sharks wiped out North Carolina bay scallop fishery
03-29-2007 · EurekAlert!
Fewer big sharks in the oceans led to the destruction of North Carolina’s bay scallop fishery and inhibits the recovery of depressed scallop, oyster and clam populations along the U.S. Atlantic Coast, according to an article in the March 30 issue of the journal Science.
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- Nemo comes home with a tag
05-03-2007 · EurekAlert!
A team of Australian, American and French coral reef scientists has achieved a world breakthrough in tracking fish that could revolutionise the sustainable management of coral reefs and help restore threatened fisheries. Working on coral reefs in a marine protected area in Papua New Guinea, the team has pioneered a new way to study fish populations by "tagging" adult fish with a minute trace of a harmless isotope, which they pass on to their offspring.
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- Sharks' 'bite force' researched by University of Tampa biologist
08-23-2007 · EurekAlert!
Dan Huber, University of Tampa assistant professor of biology, is analyzing the "bite force" and feeding mechanics of great white sharks. Earlier this summer Huber traveled to Australia to dissect a rare 8-foot great white shark, and help create the first high-res 3-D computer model of its bite. Huber's research may lead to advances in protective swimwear, shark-proofing equipment and a better understanding of flexible cartilage -- which forms the sharks' whole skeletons.
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- Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply
03-29-2007 · EurekAlert!
Fewer big sharks in the oceans mean that bay scallops and other shellfish may be harder to find at the market, according to an article in the March 30 issue of the journal Science, tying two unlikely links in the food web to the same fate.
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- Photo-monitoring whale sharks
12-26-2007 · EurekAlert!
Up to 20 meters long and weighing as much as 20 tons, its enormous size gives the whale shark its name. Listed as a rare species, relatively little is known about whale sharks. However, a new study combines computer-assisted photographic identification with ecotourism to study the rare species and suggests whale shark populations in Ningaloo, Western Australia are healthy. The study appears in the Ecological Society of America's January issue of Ecological Applications.
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