Tag: "rockfish" at biology news
Big, old fish key to restoring groundfish stocks
...96 to 1999, the average age of mature female black rockfish
declined from 9.5 to 6.5 years in a fish species that has a maximum lifespan of about 50 years. Soon after, many fisheries were in serious decline. Genetic studies by OSU researcher Michael Banks and his graduate students have also shown that there...
New findings lead researchers to question basic assumptions of fisheries management
... of rockfish, which are very long-lived fish. Many rockfish
can live for 50 years or more, and some species ca...undfish--a group that includes numerous species of rockfish
and other bottom-dwelling fish--to be overfished. Tight restrictions were imposed to allow the overf...
Technological revolutions in sensors, robotics, and telecommunications allow new views of ocean
...ocean floor in remote areas of the Arctic, observe rockfish
hideouts, and see live images of coral cities thou...e." Scientists first viewed the corals while doing rockfish
surveys from the small confines of the manned submersible, Delta. Lying sideways in the nose of the...
New science sheds light on rebuilding fisheries
...vestigating this advantage after observing Pacific rockfish
spawning patterns. He noticed that older females ...heir geographic range. Each year only a subset of rockfish
spawn successfully, and it's impossible to predict where these "winners" will be from year to year. ...
Fewer fish discarded after individual transferable quotas offered
... depends on the organism; for instance, species of rockfish
all tend to die while lingcod and sablefish are among the fish with better survival rates. "This research is interesting because it dramatically illustrates how discarding practices are influences by the regulation system," Branch says. "In the Brit...
Overfishing may drive endangered seabird to rely upon lower quality food
...this might be due to the fact that krill and young rockfish
are less available in late summer and early fall regardless of fishing pressure or oceanographic conditions. "If we look back 100 years ago in Monterey Bay, marbled murrelets were almost always feeding on higher trophic level prey, regardless of ocea...
WWU receives $720,000 for 5-year harbor seal study
...ing the response of harbor seals to the density of rockfish
in Puget Sound. Graduate student Adria Banks of Va...ich discourage fishing in an effort to restore the rockfish
population, the number and size of the bottom fish have increased. But harbor seals, which are "oppo...
Studies show that rockfish thrive with offshore platforms as their home base
....S. government that is sent out worldwide. The rockfish
species called bocaccio (Sebastes paucipinis), whi...rs, was, until recently, an economically important rockfish
species along the West Coast of North America and was abundant from Oregon to northern Baja Californ...
Whether in mice or men, all cells age the same, Stanford study finds
...ry has left open questions about why tortoises and rockfish
are still partying like 20-somethings at an age when humans are considered relics. At the other end of the spectrum, flies die off before young humans can even focus their eyes. Clearly, not all cells fall apart at the same rate. "Aging isn't like ...
'Dead Zone' causing wave of death off Oregon coast
...f not far from Yachats, Ore. Ordinarily it's prime rockfish
habitat, swarming with black rockfish, ling cod, k...enco said. "We are receiving anecdotal reports of rockfish
in very shallow waters where they ordinarily are not found. It's likely those areas have higher oxyg...
Newly discovered West Coast arrhythmias cause
... the water column and squeezed mobile animals like rockfish
into shallow habitats and suffocated everything th...alifornia, scientists are trying to understand why rockfish
populations appear to be congregating in the northern and southern ends of their ranges. Future cha...
Long-lived deep-sea fishes imperiled by technology, overfishing
...re models that estimate the recovery time for some rockfish
species is at least 200 years," Heppell said. "And we still don't know all of the factors that influence their survival."...