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The secret lives of whales

...is doubling. “Whales have very traditional feeding grounds and their migratory routes along coastlines have become incredibly noisy, urbanized habitats,?Clark explains. “Acoustic smog is shrinking their world.?/p> The Whale in the Coal Mine ?Cataloging Ocean Pollution Roger Payne and Scott McVay were th...

South America's vast pantanal wetland may become next everglades, UNU experts warn

...ies and 270 fish species. It is also the wintering grounds for a large number of migratory birds that summer in North America. According to an analysis by UNU-PREP and the Japan-based UNU Institute for Advanced Studies: "While large parts of the Pantanal have remained pristine, today the ecosystem is under ...

How monarch butterflies are wired for navigation

...terfly to extend its survival in its overwintering grounds in Mexico. The researchers include Ivo Sauman of the Czech Academy of Sciences; Adriana D. Briscoe of the University of California, Irvine; Haisun Zhu, Dingding Shi, Quan Yuan, Amy Casselman, and Steven M. Reppert of the University of Massachusetts ...

Penguin chicks exposed to human visitors experience spike in stress hormone

...ewly hatched magellanic penguin chicks in breeding grounds with a large number of human visitors show a significant spike in levels of a stress-related hormone compared to chicks hatched in areas not visited by humans, a University of Washington research team has found. It wasn't until chicks with limited h...

Genetics links whale to two different ocean basins

...in biopsies collected from whales in the wintering grounds of both the Indian and South Atlantic Oceans for evidence of inter-oceanic exchange of individuals. Using a method of genetic capture-recapture of genotypes constructed of microsatellite markers, the researchers identified an individual whale sampled...

Research casts doubt on circulating stem cells

...f all trades" ?not least because some studies gave grounds for hope. Using irradiation techniques, researchers managed to destroy the bone marrow in mice and replace it with cells which became green-fluorescent thanks to a genetic addition. A short time later they then discovered green-fluorescent nerve cell...

Restaurant seafood prices since 1850s help plot marine harvests through history

...ime, with lessons for the recovery of such fishing grounds as the Gulf of Maine and Newfoundland, prolific until comparatively recently. Other research to be showcased at the conference describes: * How Imperial Rome developed a fish processing industry by smoking, drying, salting and using oil and dif...

Deep treasure to be found in Oculina Bank

...ore than 70 fish species and are critical breeding grounds for commercially important populations of gag and scamp grouper as well as rock shrimp. The reefs' location directly under the Gulf Stream makes them a potentially important source of fish larvae for the entire southeast U.S. continental shelf. Har...

Seal rookeries could provide a reliable food source for endangered California condors, study finds

...red birds are released near marine mammal breeding grounds along the West Coast. "Condors eat carrion, they don't kill for food," says C. Page Chamberlain, lead author of the PNAS study and chair of Stanford's Department of Geological and Environmental Sciences. "What we're proposing is a conservation strat...

Ocean 'dead zones' trigger sex changes in fish, posing extinction threat

...a are usually larger than the spawning and nursery grounds of fish. Even though some tolerant species can survive in hypoxic zones, they may not be able to migrate out of the zone and their reproduction will be impaired." Hypoxia is considered one of the most serious threats to marine life and genetic dive...

Sustainable farm practices improve Third World food production

...e approaches can meet future food needs, there are grounds for cautious optimism, particularly as poor farm households benefit more from the their adoption," Pretty says. ...

Hooked on fishing, and we're heading for the bottom, says scientist

...fish. But research is often publicly funded on the grounds that this is an alternative to other political action. We know enough to act to prevent the continued decimation of global fisheries." Dr. Pauly will be presenting his views as part of a symposium on international scientific cooperation for the tran...

Spring migration of pink-footed geese under threat

...epare for their spring migration north to breeding grounds in the Arctic, ecologists are warning that the esc...lgium and the Netherlands and migrates to breeding grounds in Svalbard (an archipelago hundreds of miles off the north coast of Norway) in spring. On their mig...

Expedition discovers marine treasures

... boats, forcing them away from traditional fishing grounds and causing the loss of fish pots that become so-called ''ghost traps" that harm fish stocks. Leroy Peterson, a Saba fisherman, called the expedition crucial for protecting Saba Bank's unique marine life. "Some of the scientists actually found new ...

El Nino events affect whale breeding

...n made with whales as they return to their calving grounds in the South Atlantic. Keith Reid from British Antarctic Survey (BAS) said, "These results help us to understand processes in three connected oceans and are crucial to predicting the consequences of climate change on the whales." Southern right wha...

Northern birds are fatter!

... further north ?as they get closer to the breeding grounds - and that the longer the birds spend hanging around at San Francisco Bay (one of the more southerly refuelling sites), the lower their fattening rates. Such differences in fattening rates cannot simply be explained by differences in the availabil...

A dichotomy in migration patterns found for sea turtles in east Atlantic

...tle behavior: While some turtles leave the nesting grounds to feed on bottom-dwelling sea life in shallow coastal waters, others leave Cape Verde to roam the much deeper open ocean along the African coast and exhibit a distinct feeding strategy. Interestingly, while adults compose both groups, the coastal fe...

The secret lives of sea slugs

...research animal. "Tritonia is one of the testing grounds for a lot of ideas for how nervous systems work," says Wyeth. "Field work with this organism is helpful because it gives you a good idea of how to set things up in the lab." Observations of the slug's natural behaviors and the sensory cues that trig...

Disappearing nest egg: Researcher studying declining numbers of macaws

...are being eliminated." Other prime macaw nesting grounds are being lost by logging and clearing the land for agriculture, he adds. Brightsmith will return to the area in October and hopes to install collars on numerous macaws and use satellite technology to track their movements and learn more about them. ...

Intrinsic eye protein halts angiogenesis

... of blood vessels) they have long been the testing grounds for anti-angiogenesis drugs intended to treat conditions in other areas of the body. The Ambatis, brothers who are both engaged in the clinical practice of ophthalmology as well as in basic research, discovered that a protein known as SFLT-1 is sin...

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