Tag: "shark" at biology news
Testing the force of a shark's bite
...er model to test the bite force of the Great White shark
using data from a shark
caught in beach nets off Australia's NSW Central Coast. The 2.4 metre long Great White shark
New research shows sharks use their noses and bodies to locate smells
...he Journal of Experimental Biology, show that this shark
is severely handicapped in its ability to locate the source of an odor when deprived of information from its lateral line, particularly in the dark. According to Atema, since most odor plumes disperse in patches, fish locate odor sources through a...
Bony vertebrate evolution: Elephant sharks closer to humans than teleost fish
...uencing (1.4 coverage) of a chimaera, the elephant shark
(Callorhinchus milii). The elephant shark
genome, estimated to be about 910 Mb long, comprises about 28% repetitive elements. Comparative anal...
Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply
...led to an explosion of their ray, skate, and small shark
prey species. "With fewer sharks around, the sp...t decades to meet the growing worldwide demand for shark
fins and meat." Sharks are targeted in numerous fisheries, and they also are snagged as bycatch i...
Overfishing great sharks wiped out North Carolina bay scallop fishery
... led to an explosion of their ray, skate and small shark
prey species. "With fewer sharks around, the spe...t decades to meet the growing worldwide demand for shark
fins and meat," Baum said. Sharks are targeted in numerous fisheries, and they also are snagged as...
New guide to sharks and rays of Indonesia
...ided the first detailed description of Indonesia's shark
and ray fauna information which is critical to th...Rays of Indonesia. "Indonesia has the most diverse shark
and ray fauna and the largest shark
and ray fishery in the world, with reported landings of more tha...
UF study: World shark attacks rise slightly but continue long-term dip
...y of Florida research finds. The total number of shark
attacks worldwide increased from 61 in 2005 to 62 ...have only four people a year die in the mouth of a shark
and puts in perspective how small shark
attack is as a phenomenon. Fewer sharks are swarming near ...
Saving endangered whales at no cost
...reatening turtles and non-targeted fish, including shark
species, as bycatch....
Reef sharks threatened by overfishing
...y Australian scientists has warned that coral reef shark
populations on the Great Barrier Reef are in the m...lence for Coral Reef Studies, found that grey reef shark
numbers had already declined to around 3% of unfished levels, and are currently declining so fast th...
Ongoing collapse of coral reef shark populations
Investigators have revealed that coral reef shark
populations are in the midst of rapid decline, and...f individual sharks. Their findings show that reef shark
abundance on reefs open to fishing are about ten times lower than on unfished reefs. Moreover, high ...
Ancient predator had strongest bite of any fish, rivaling bite of large alligators and T. rex
CHICAGO -- It could bite a shark
in two. It might have been the first king of the beasts. And it could teach scientists a lot about humans, because it is in the sister group of all jawed vertebrates. Dunkleosteus terrelli lived 400 million years ago, grew up to 33 feet long and we...
Triple threat: World fin trade may harvest up to 73 million sharks per year
...the October 2006 edition of Ecology Letters. "The shark
fin trade is notoriously secretive. But we were a...ds and convert from fin sizes and weights to whole shark
equivalents to get a good handle on the actual numbers," says lead author Shelley Clarke, Ph.D, an A...
Earth's most diverse marine life found off Indonesia's Papua Province
...rld of visual wonders, such as the small epaulette shark
that "walks" on its fins and colorful schools of reef fish populating abundant and healthy corals of all shapes and sizes. Threats from over-fishing with dynamite and cyanide, as well as deforestation and mining that degrade coastal waters, requir...
Trap-jaw ants have fastest recorded strike in animal kingdom
...than such noteworthy contenders as the great white shark
and the spotted hyena. Biologists clocked the speed at which the trap-jaw ant, Odontomachus bauri, closes its mandibles at 35 to 64 meters per second, or 78 to 145 miles per hour - an action they say is the fastest self-powered predatory strike in ...
UF scientists discover evolutionary origin of fins, limbs
...s from the spotted catshark, a type of slow-moving shark
from the eastern Atlantic Ocean. By studying the activity of a dozen genes in shark
embryos, they determined shark
median fin development is associated with the presence of genes such ...
Costa Rican environmental leader to receive new conservation award
...eneral Assembly, and he pushed through laws to ban shark
finning and require shrimp trawlers in Costa Rican waters to use sea turtle excluder devices. "We are very proud of Carlos Manuel for his admirable conservation achievements and the recognition that he is receiving from the blue moon fund," said Cl...
Oceans are 70 percent shark free
...the deepest oceans of the world would appear to be shark
free. In a paper published today, an internationa...entists say that the deepest confirmed report of a shark
is at 3,700m. They believe it is very unlikely that major new populations will be discovered in abys...
Marine mammals are on the frontline of failing ocean health
... to be feeding on high trophic-level fish, such as shark
or tuna, in California during the winter. Until recently, information about these animals was based on limited field studies. "This approach allows you to go where mere field observation would fail you," says Krahn. "We're filling in the pieces of...
UF study: World shark attacks dipped in 2005, part of long-term trend
...d even aggressive human behavior could explain why shark
attacks worldwide dipped last year, continuing a f...eum of Natural History. In contrast, there were 78 shark
attacks -- 11 of them fatal -- in 2000, the all-time high record year for attacks since statistics w...
UF scientists trace origin of shark's electric sense
...rticularly rely on vision. If you see a hammerhead shark
searching for flatfish, it moves its head back and forth, almost as if it were using a metal detector. Knowing that the electrosensory system may have developed with involvement of neural crest cells is valuable for people trying to reconstruct verte...