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Tag: "shark" at biology news

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 ...

Saving endangered whales at no cost

...reatening turtles and non-targeted fish, including shark species, as bycatch....

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 s...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 ...

Triple threat: World fin trade may harvest up to 73 million sharks per year

...he 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...

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 ...

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 ...

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...

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...um 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...

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...

Oceans are 70 percent shark free

...the deepest oceans of the world would appear to be shark free. In a paper published today, an internation...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...

Jefferson scientists identify gene defect leading to abnormal skin development and cancer

...sized the principal one, a novel steroid akin to a shark steroid that possesses anticancer activity. This is the first migratory attractant to be identified in any fish. The work is the cover story for the November issue of Nature Chemical Biology and will be published online in the journal Sunday, Oct. 2....

Leading lampreys to slaughter: Pheromone for scourge of Great Lakes identified

...sized the principal one, a novel steroid akin to a shark steroid that possesses anticancer activity. This is the first migratory attractant to be identified in any fish. The work is the cover story for the November issue of Nature Chemical Biology and will be published online in the journal Sunday, Oct. 2....

Researchers at UGA provide first look at protein expression in Chagas disease-causing parasites

Covering ship hulls with artificial shark skin could help ships sailing smoothly. The growth...esenting his work on the application of artificial shark skin in a new anti-fouling strategy at the Society for Experimental Biology Annual Main Meeting in B...

Three deadly parasite genomes sequenced

Covering ship hulls with artificial shark skin could help ships sailing smoothly. The growth...esenting his work on the application of artificial shark skin in a new anti-fouling strategy at the Society for Experimental Biology Annual Main Meeting in B...

Ethical guidelines suggested for research that would put human stem cells in primates

Covering ship hulls with artificial shark skin could help ships sailing smoothly. The growth...esenting his work on the application of artificial shark skin in a new anti-fouling strategy at the Society for Experimental Biology Annual Main Meeting in B...

Experts discuss use of human stem cells in ape and monkey brains

Covering ship hulls with artificial shark skin could help ships sailing smoothly. The growth...esenting his work on the application of artificial shark skin in a new anti-fouling strategy at the Society for Experimental Biology Annual Main Meeting in B...

Researchers identify new catfish family

...60 years: the coelacanth in 1938 and the megamouth shark in 1983. The researchers are Dr. Rocio Rodiles-Hernandez of the Colegio de la Frontera Sur, Dr. Dean Hendrickson and Dr. Julian Humphries of The University of Texas at Austin and Dr. John Lundberg of the Academy of Natural Sciences of Philadelphia. ...

Shark skin saves naval industry money

Covering ship hulls with artificial shark skin could help ships sailing smoothly. The growth...esenting his work on the application of artificial shark skin in a new anti-fouling strategy at the Society for Experimental Biology Annual Main Meeting in B...

Plankton can run, but can't hide from basking sharks

...ave important implications for the conservation of shark species. Dr David Sims of the Marine Biological A...ton-eating sharks, the authors say, and shows that shark diving behaviour differs predictably between deep waters and in shallow seas close to plankton-rich ...

Agilent Technologies introduces advanced zebrafish, mouse microarrays for stem cell and developmental biology research

...da recently - one that killed a 14-year-old girl - shark attacks remain very rare when you put it all into ...eople in the water at the same time, the number of shark attacks is very, very remote. Your chances of winning the lottery are greater than being attacked by...

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(Date:9/30/2014)... the Mediterranean each year, but its deep-blue waters ... Almost 1,000 alien species, including fish, crustaceans, and ... human activities. In the open-access journal Frontiers ... researchers analyzed data from a new information system ... the introduction of alien species has changed the ...
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