Tag: "turtles" at biology news
New fossil sheds light on old mystery
... wave that could push the prey away. Fish and some turtles
combat these factors with suction feeding, i.e., pulling the prey into their months by rapidly expanding the mouth cavity. Crocodiles and alligators use a different approach. They catch prey with their flat head and pincer jaws, which allow them (whe...
South Dakota Tech grad student finds rare whale
...student. Their work augments studies of fossil sea turtles
found in South Dakota. Hart measured the 13-foot whale, photographed it and collected its skull for identification by Dr. James Mead at The Smithsonian Institution's Museum of Natural History. He identified it as a Sowerby's beaked whale, probably...
Endangered turtles' trek along ocean currents revealed by satellite
...tween the apparently meandering routes followed by turtles
and the local ocean conditions, and so develop str...rn is by no means certain. While in open water the turtles
have been known to dive as deep as 1,230 metres in search of food, most of the time they do not vent...
Sea turtle health linked to contaminants
Loggerhead sea turtles
may be getting sick because of environmental expos...onmental Health Perspectives, the study found that turtles
with higher concentrations of contaminants had poorer health. The authors note that the correlations...
Researchers find evidence that sea turtles navigate with magnetic maps
...accomplished navigators in the animal kingdom, sea turtles
often migrate across thousands of miles of open oc...ill, indicate that the navigational ability of sea turtles
is based at least partly on a "magnetic map" -- a remarkable ability to read geographic position fro...
Fish no exception to trend in marine-organism disease
...ell points to trends revealed by the study: Sea turtles
are suffering from large tumors caused by a herpes virus that has spread over the last two decades. Marine mammals have a variety of viral and bacterial ailments, some of which also seem linked to human activities. Mollusks, such as commercially ...
More than 300 critically endangered species completely unprotected, new study shows
...Sangihe Island. TURTLES AND TORTOISES: Of the 273 turtles
and freshwater tortoises mapped, 21 are gap species, 12 of which are threatened. CR gap species include the Roti Island snake-necked turtle (Chelodina mccordi), discovered in 1994 on the little island of Roti, Indonesia, and threatened by over-collec...
Loggerhead sea turtles nesting earlier due to warmer ocean temperatures
ORLANDO, Fla., April 6, 2004 -- Loggerhead sea turtles
along Florida's Atlantic coast are laying their eg...ndian River counties where thousands of loggerhead turtles
nest every year. About 25 percent of loggerhead nests in the United States are on that stretch of be...
Duke study gives first worldwide measure of sea turtle casualties by longline fishing
...ore than 250,000 loggerhead and 60,000 leatherback turtles
are estimated to be inadvertently snared each year...e zones where these longlines are strung, many sea turtles
are either hooked attempting to swallow the bait or are entangled in the fishing gear, the study not...
Pacific leatherback turtle could go extinct in 10 years
...dent of the International Sea Turtle Society. "Sea turtles
act as our warning mechanism for the health of the...isk of extinction. The Kemp's ridley and hawksbill turtles
are classified by the IUCN Red List as Critically Endangered, as is the leatherback. The green, oliv...
Turtles indeed in danger
... to habitat loss, egg poaching, and predation. But turtles
also die at sea due to accidental catches in fishi...ine fishery. Despite infrequent encounters between turtles
and longlines, the sheer magnitude of the longline fishery means more than 200,000 loggerheads and 5...
International science team tracks ocean predators around the globe
...shes, sharks, sea birds, pinnipeds, cetaceans, sea turtles
and even Humboldt squid. An international team of more than 65 TOPP collaborators will monitor the migrations of these animals in the context of the conditions in the water surrounding them, in an effort to learn not only where they go but also what ...
Advanced sensors, computing systems tracking sea animals worldwide
...ogy whose research includes assessing how many sea turtles
inadvertently die at sea from being hooked by comm... or fly long distances. To see how many tagged sea turtles
might cross the paths of commercial fishermen, for example, that information is being overlaid onto ...
New technologies reveal mysteries of marine megafauna
How can scientists follow leatherback sea turtles
that dive to crushing depths a half-mile below the...ee the distribution and movements of seabirds, sea turtles
and marine mammals in open ocean environments (see www.obis.env.duke.edu ). Resolving Conflicts O...
World's largest-ever sea turtle symposium to address plummeting populations of sea turtles
...ea turtles. The world's seven species of sea turtles
are under grave danger from threats including over...ea Turtle Lifescapes," and it will address how sea turtles
affect humans and how humans, in turn, adversely affect them and their marine ecosystems. The primar...
2004 AAAS annual meeting spotlights world health, oceans and family science
...w data on the migratory patterns of endangered sea turtles
also is part of the program. And, during the Oceans for Everyone town hall meeting, AAAS will disclose the results of a national public-opinion survey covering a range of marine science questions, from seafood safety to fishing regulations. A free p...
Endangered sea turtles make a dramatic turnaround
...y important population of endangered hawksbill sea turtles
along the coast of Nicaragua has dropped by more t...orld Conservation Union (IUCN). Further, hawksbill turtles
are listed under Appendix I in the Convention on International Trade of Endangered Species (CITES), ...
How many fish in the sea? Census of Marine Life launches first report
...ic migrations of bluefin tuna. These fish, sharks, turtles
and elephant seals are helping Census researchers record and report the vertical structure of the vast oceans. Less than 10 miles off the Florida Keys, scientists recently discovered a new species (and perhaps new genus) of sponge - bright red and ...
Lone Vietnamese turtle may be last of its kind
...esumably on the brink of extinction." Freshwater turtles
and tortoises across Asia have become increasingly...ade. Of the approximately 90 species of freshwater turtles
and tortoises that occur in South Asia, East Asia, Southeast Asia and New Guinea, more than a third ...
Research: Coral reefs' decline actually began centuries ago
...sts showing that indigenous Bahamians hunted green turtles
to such an extent they seriously depleted the herb...st colonists arrived. "I used to think that green turtles
were basically in pristine shape when Columbus arrived, and I don't think that anymore," she said. ...
1 2 3