Jan 16 2014

Squid vs. fish: Camera captures epic undersea battle on video

Thanks to its sharp beak, a small red squid emerged victorious after an epic hourlong battle with a much bigger owlfish, all caught on video last November in Monterey Bay, Calif.

The black-eyed squid paralyzed the owlfish by cutting through the fish’s backbone, according to Bruce Robinson, a senior scientist at the Monterey Bay Aquarium Research Institute. Robinson narrates a video of the fight between invertebrate and vertebrate, captured by MBARI’s remotely operate vehicled Doc Ricketts on Nov. 11, 2013.

The Doc Ricketts discovered the struggling marine creatures at about 1,475 feet (450 meters) below Monterey Bay as the vehicle was rising toward the surface, said Susan von Thun, an MBARI senior research technician. Scientists watched the scene play out for 50 minutes before the ROV had to continue its journey, Von Thun told LiveScience. [See video of the squid-fish tussle.]

“They were sinking rapidly the whole time, and we think that’s part of the squid’s tactic,” Von Thun said. “We see a lot of feeding events, and oftentimes the squid gets startled and lets go, but this guy held on for the whole time that we watched it.”

By the time the ROV left, the squid and owlfish had dropped to a depth of 1,970 feet (600 meters), Von Thun said.

Read the full article here.

Jan 16 2014

From ancient fish, insight into origin of limbs

A fish with legs? It sounds preposterous, but ancient fossils unearthed in the Canadian Arctic reveal a fish that had skeletal features similar to animals with legs, researchers said Monday.

The find challenges the widely held view of evolution that hind limbs did not begin to form until creatures left the oceans and began living on land.

And it provides a powerful insight into the pivotal episode when creatures emerged onto land: If the authors are right, we can trace our arms — and our legs — to fish fins.

“That wrist you use to write with, the neck you use to move your head around with, the lungs you’re using to breathe . . . all derive from parts in the bodies of fish. Your hands and arms derive from parts of the fins,” said Neil Shubin, a professor of anatomy at the University of Chicago who was one of the leaders of the work. “What the fossil record tells us is how deeply we are connected to life on the rest of the planet. In this case, this tells us how closely we are related to fish.”

Read the full article here.

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Jan 16 2014

As sardines vanish from Southern California coastal waters, fishermen rely on squid and anchovy

Seafood News
Larry Derr was as prepared as any longtime Southern California bait fisherman for the disappearance of the Pacific sardines he has pulled up by the ton since the 1980s.

He can fish anchovies instead and, if those become scarce, there’s been a local surge in market squid to keep him in business.

But the fickle sardines have been so abundant for so many years – sometimes holding court as the most plentiful fish in coastal waters – that it was a shock when he couldn’t find one of the shiny silver- blue coastal fish all summer, even though this isn’t the first time they’ve vanished.

And the similar, but smaller, anchovies have proven a poor replacement since sardines became scarce. Fortunately, a boom in market squid has propelled Derr and other coastal pelagic fishers.

In three days of nighttime fishing last week, Derr barely cleared a measly 20 scoops of anchovies to sell.

“A couple days ago we caught a ton of anchovies,” Derr said, keeping a vigilant eye for the telltale red mass on the In-Seine’s sonar during a predawn hunt Saturday. The screen remained black with irregularly dispersed green dots representing schools too small to fish. “We want this to be solid red.”

Though sardines aren’t as valuable as tuna or rockfish, they’re an important food source for larger fish, marine mammals like sea lions, dolphins and whales, and sea birds that can spot them from the air and dive for them.

Some have attributed recent rashes of sea lion pup and pelican deaths to the sardine population decline, which began a few years ago and was officially recognized in December when the fishing quota was dropped to just 5,446 metric tons for all of California, Oregon and Washington from January to June. In the same time period last year, the quota was 18,073 metric tons.

The Pacific Fishery Management Council lowered the quota in November after years of sardine stock decline from 2006, when 1.4 million tons were estimated to be swimming around the north Pacific. This year, their numbers are believed to be less than 400,000 metric tons.

Read the full article here.

Jan 13 2014

Giant squid caught by net fisherman off Japan

A story published Thursday about a monstrous radioactive squid discovered on a Southern California beach was an obvious hoax.

But this past week off Japan, an actual giant squid was captured in a fisherman’s net and died after it was hauled to the surface.

The squid in the hoax story was said to be 160 feet long and its immense size was blamed on radiation being leaked into the Pacific in the aftermath of the 2011 Fukushima nuclear disaster.

“Alarms sound over radioactive gigantism,” screamed a headline above a story that featured a photoshopped image and quoted experts who do not exist.

Though some believed the story, fabricated by the Lightly Braised Turnip website, it was easily debunked.

But the capture of an actual giant squid Wednesday off Sadogashima Island is more believable, even though squid captures are exceedingly rare.

According to the Japan Times, the male specimen measured about 12 feet and weighed about 330 pounds. The accompanying Japanese-language video shows the creature on display and being measured by scientists (footage of the squid being pulled to the boat begins at the 1-minute mark).

Giant squid are elusive creatures that occupy the dark ocean depths. They’re believed to have spawned sea monster myths among ancient mariners, and have been featured as predatory beasts in novels and films.

They can measure to about 40 feet and weigh nearly a ton.

Read the full story here.

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Jan 10 2014

They’re back – the bay’s herring hordes return

Sea lions, porpoises and tens of thousands of birds are jockeying for position with fishermen this week as the annual herring run splashes into San Francisco Bay, a spectacular marine wildlife showcase that conservationists say is one of the largest in North America.

The schools of herring, which surge into the bay in several waves, have attracted as many as 70,000 birds to the region, particularly to Richardson Bay in Marin County, a spawning hot spot for the squiggling hordes.

The fish arrived en masse beginning last week to lay and fertilize eggs, or roe – a delicacy for a wide variety of species, including sushi-loving humans. Fishermen are rushing out every morning to cast their nets before the menagerie of honking, squawking ducks, pelicans and diving birds can devour all the good stuff.

“We’re the last predators to get a crack at those fish. Everyone else has come to the table, and we get the leftovers,” said Nick Sohrakoff, a herring fisherman and chairman of the local herring advisory committee. “There’s a lot of fish in the bay, and they seem this year to be a little bit bigger than they were in the past few years.”

The riotous reception is a good sign that the bay’s once-thriving herring runs, which collapsed four years ago, are returning to glory. The San Francisco run – the last urban fishery in the United States – is the only big-time fishing operation where spectators can actually sit on shore and watch commercial boats haul in the catch.

Read the full article here.

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Jan 7 2014

9 Reasons To Eat Fish Right Now

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All things considered, 2013 was not the best year for fish news. We learned all about the dangers of contaminated fish sources and, just in December, a large-scale study published in The Journal of Nutrition found some evidence to contradict the commonly held belief that a fish-rich diet improved cognitive function in old age.

But, looking forward, the news gets better: In its first issue of 2014, the Journal of the Academy of Nutrition and Dietetics released a new position on fat intake, promoting fatty fish as the go-to source for polyunsaturated fatty acids:

   It is the position of the Academy of Nutrition and Dietetics that dietary fat for the healthy adult population should provide 20 percent to 35 percent of energy, with an increased consumption of n-3 polyunsaturated fatty acids and limited intake of saturated and trans fats.

Two “long-chain” omega-3 fatty acids found in fish, EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), are not made by the human body, meaning we need to eat them from a dietary source. Many people get omega-3 fatty acids from plant sources like flax seeds and walnuts, though this type of “good” fat — alpha-linolenic acid — only partially converts to EPA and DHA in the body and doesn’t have the same amount of research behind it that omega-3s derived from fish do. Here are nine reasons to eat fish for your health:

Read the full article here.

Dec 24 2013

California fishers say quota system is all wet

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The skipper of a fishing boat that has trawled Monterey Harbor for decades says he’s been docked since spring, unable to earn a living.

Jiri Nozicka says a federal quota system enacted to protect both fish and the commercial fishing industry has problems that he can’t navigate.

“How do I plan anything?” he asked, recently standing on the deck of the San Giovanni. “I can’t. It’s impossible.”

He’s not alone in criticizing the “catch shares” system and calling for changes. Commercial fishers, industry experts and government officials are among those who say that while fish populations are recovering, too few people in California are benefiting from that rebound in part because there aren’t enough qualified monitors to oversee the program.

“Financially, I can only say that multiple trips have been cancelled due to a lack of availability of these monitors, millions of pounds of fish have not been caught, processed and sold to markets and this is a loss of millions of dollars,” said Michael Lucas, president of North Coast Fisheries Inc., in a letter to federal regulators.

After Pacific Coast groundfish populations dropped dramatically in 2000 a federal economic disaster was declared, leading to the strict new quota system. The goal was to boost populations of black cod and dover sole and to revive the flagging industry.

Read the full article here.

Dec 17 2013

Fishing Green: Calif. Harvested Wetfish Fisheries are the most efficient in the world

As more Californians consider their total carbon footprint, as a way to reduce human impacts on climate change, more are looking at “food miles”:  how far their food travels between the time it is harvested and the time it gets to their plate. The Farm-to-Fork movement not only implies freshness, but that transportation from the farm to the consumer’s plate is a relatively short distance.

Fishing, like farming, can be green and sustainable. And California is leading the way in this effort, but distance is a misleading measure. Fishing green implies that fisheries are harvested at a sustainable level, keeping the fish populations healthy, while providing nutritious foods to millions of Americans and others worldwide. Beyond fishing below set quotas, there are three ways that fishing green can be achieved:

• Reduce the harvest of foods that have high energy costs in their production, capture or transportation

• Reduce harvest of high trophic level species that require a large amount of primary production to replace their numbers

• Support efficiency in the production of fishery resources

In the complete “Fishing Green” report by Richard Parrish, PhD, you will learn more about how California’s wetfish fisheries (coastal pelagic species such as sardine, mackerel and market squid) are among the most sustainable methods of food production.  Purse-Seine fisheries for small pelagic fishes and squid in California are the most fuel-efficient of all the fisheries, averaging 6 gallons per metric ton harvested.

Read more in the full report here.

Nov 24 2013

Time to Take Ocean Acidification Seriously?

Saving Seafood     The Economist Logo
November 22, 2013 — HUMANS, being a terrestrial species, are pleased to call their home “Earth”. A more honest name might be “Sea”, as more than seven-tenths of the planet’s surface is covered with salt water. Moreover, this water houses algae, bacteria (known as cyanobacteria) and plants that generate about half the oxygen in the atmosphere. And it also provides seafood—at least 15% of the protein eaten by 60% of the planet’s human population, an industry worth $218 billion a year. Its well-being is therefore of direct concern even to landlubbers.

That well-being, some fear, is under threat from the increasing amount of carbon dioxide in the atmosphere, a consequence of industrialisation. This concern is separate from anything caused by the role of CO2 as a climate-changing greenhouse gas. It is a result of the fact that CO2, when dissolved in water, creates an acid.

That matters, because many creatures which live in the ocean have shells or skeletons made of stuff that dissolves in acid. The more acidic the sea, the harder they have to work to keep their shells and skeletons intact. On the other hand, oceanic plants, cyanobacteria and algae, which use CO2 for photosynthesis, might rather like a world where more of that gas is dissolved in the water they live in—a gain, rather than a loss, to ocean productivity.

Read story from Saving Seafood here.
Read story from The Economist here.

Nov 20 2013

State, squid industry getting together

Capitol Weekly
Recently, the California Department of Fish and Wildlife (CDFW) closed the commercial fishery for market squid Loligo (Doryteuthis) opalescens. The closure came a month earlier than the year before.

This was the fourth straight year that the squid fishery closed early; the season typically extends all year, from April 1 to March 31. The difference this year – unlike the past – was that the Department collaborated with the squid industry on day-to-day management, including the closure date.

Squid fishermen and seafood processors, working with the Department, tracked catches daily from season start in April. They determined that the season’s harvest limit of 118,000 short tons of market squid would be reached early because squid began spawning far earlier than normal  in Southern California in 2013, a fact documented by industry-sponsored squid research.

Read the full article here.