Tag: "cod" at biology news
Gulf of Maine marine ecosystem may have entered new phase
For most of the past 4,500 years, cod
was king in the Gulf of Maine's coastal waters. Today, cod
have given way to the Jonah crab with potential long-term consequences for coastal fisheries, accord...
Whales, seals or men? Who stole all the fish?
...utinely claim that seals and sea lions eat so many cod
and salmon that they reduce the fishers' take. Conversely, environmental groups such as Greenpeace contend that overfishing has destroyed the food sources of whales and seals off the Atlantic coast of Canada. In Alaska, Greenpeace and other conserv...
Duke study gives first worldwide measure of sea turtle casualties by longline fishing
...eady used off regions like New England, where both cod
and scallop fishing are banned in large areas, he said. "The additional costs are minor, considering the costs of other electronics that state-of-the-art fishing vessels now have on board. That might seem invasive to individual fishermen. On the othe...
National ocean commissioners & scientists call for overhaul of ocean policies & management
... on species of commercial interest such as salmon, cod
or tuna. Fundamental to transforming ocean policy and restoring ocean health is shifting from single-species management and fragmented governance to an integrated approach called ecosystem-based management. "Ecosystem-based management means taking a...
Breakthroughs in acoustic tracking shine new light on the lives of fish
... of Environmental Research. "We could tell that a cod
ended up 400 miles from where we tagged it, but th... Reef Fish Scientists used to think that Atlantic cod
- an economically, culturally and ecologically important species in New England moved great distanc...
New technologies reveal mysteries of marine megafauna
...ntangled in nets set for bottom dwelling fish like cod
and flounder. Unable to reach the surface to breathe, they suffocate and die. Fisheries managers have implemented a series of conservation measures in an effort to reduce the number of porpoise deaths, including banning bottom-set nets from some are...
How many fish in the sea? Census of Marine Life launches first report
...logy discovered and filmed large schools of arctic cod
between the layers of pack ice. Normally bottom feeders, these cod
were filmed grazing on upside-down algal pastures. This surprising find encourages further explorati...
Whale populations are too low to resume commercial hunting, geneticists find
...proximately 90 percent the oceans' stocks of tuna, cod
and other large predatory fish have been depleted by commercial fishing. Whales are also large predators, and their demise has had a significant impact on ocean ecosystems, observed marine biologist Boris Worm, co-author of the Nature study. "One of ...
Nature cover story - Only 10% of all large fish are left in global ocean
...rom individual fisheries showing that species like cod
can be fished below recovery, but it also reveals a grim global mosaic that demands immediate action. "The impact we have had on ocean ecosystems has been vastly underestimated," says co-author Boris Worm of Dalhousie University and the University of...
Overfishing may diminish genetic diversity even when millions of fish remain
...r marine fish fish such as snappers, rockfish and cod
that spend their entire lives in the ocean. For some animals studied by conservation biologists, such as pandas and elephants, as few as 500 individuals appear to be enough to maintain rare variances. For reasons not yet understood, however, it appe...
Grant from Vetlesen Foundation supports URI Graduate School of Oceanography Climate Research
... feeds off phytoplankton and is a favorite food of cod
and haddock. Durbin and Luo will use the Princeton Ocean Model with a high resolution grid to determine if seasonal variations in Calanus transport can be linked to climatic variations such as those associated with the North Atlantic Oscillation. "...
Ocean aquaculture: Technology, business practices, policies & caviar
...s for blue mussels, sea scallops, summer flounder, cod
and haddock. By considering two major angles of open ocean aquaculture setups - operations and markets - the researchers could factor everything that could go wrong, the likelihood that it would, and quantify them to determine profits or losses. O...
Extensive research survey confirms life on Earth now being affected by global warming
...endently decreases the probability that a juvenile cod
will live to adulthood," Post says. "When people put very intense stresses on an animal population that also is experiencing environmental stresses, it is very difficult to tell how the two will interact and the result is an almost impossible guessi...
Military technologies and increased fishing effort leave no place for fish to hide
...0, 63 years after the harvest. In Canada, northern cod
were depleted to a few percent of their former abundance in the early 1990s, and there is still little sign of recovery. We are realizing, too late in some cases, that severe depletion can undermine population resilience by impairing reproduction, r...
University of Rhode Island fisheries oceanographers study the effects of predator-prey interactions in the Georges Bank fish community
...appear to be a significant source of mortality for cod
and haddock. Most of the predation of these specie...annibalism was the dominant source of predation on cod
and silver hake; this predation, therefore, compensates for changes in year-class size. The auth...
Harbor Branch scientists to study predation habits of jellyfish-like animals in Gulf Of Maine
...pepods form an important part of the diet of young cod
and other commercially important fishes in the Gulf of Maine region. A key goal of the current mission is to determine the extent to which the predatory activity of Nanomia effects food availability for other animal populations in the Gulf of Maine....
Scientists: Collapse of coastal ecosystems tied to past overfishing
... Australia; now there are just 500. Where Atlantic cod
in the Gulf of Maine once measured an average of about 3 feet, todays average size is about a foot. Where seagrass beds covered more than 76,000 acres in Tampa Bay less than 150 years ago, the grass now encompasses just 26,000 acres. Despite su...
Overfishing sets the stage for other problems in marine ecosystems
...rge predatory fish such as cod.The average size of cod
for thousands of years was about a meter longwhich... the worlds coastal oceans isaccelerating. Whereas cod
were harvested by humans as a primary food forover 5,000 years and early Europeans saw cod
as an ine...
Purdue researcher creates soy feed to keep fish on the table
...e of feeds," Brown says. "Their main food has been cod
racks the cod
head, bones and guts left after processors take off the fillets. As of two years ago, the North Atla...
Rheumatoid arthritis: Olive oil and cooked vegetables may help
...rom deep sea fish such as tuna, herring, salmon or cod
contain anti-inflammatory n-3 fatty acids. The authors propose a metabolic mechanism through which olive oil appears to protect against the development of RA and inhibit its inflammatory response. Especially in the relatively unrefined form in whic...