Blog Tags: Blue Crabs
Ocean Roundup: Blue Crabs Keeping Invasive Green Crabs in Line, Sargasso Sea Less Biodiverse than in Previous Years, and More
- New research shows that there’s much less biodiversity in the Sargasso Sea than there was in the 1970s. The scientists noted that 13 species reported to be present over 40 years ago, including worms and some crustaceans, were not found in these samples. Phys.org
By Leah Powley
Seafood fraud in the Mid-Atlantic region is causing new concern among area watermen and their Congressional representatives. According to crab fishermen in Maryland and Virginia, imported crabmeat is being packaged in the United States, relabeled, and then sold as a “product of the U.S.” This mislabeling—illegal under U.S. law—has gathered attention from the area’s Congressional representatives, who are calling on President Obama to address this seafood fraud.
From today's Washington Post:
The government said last week that three-quarters of the spilled oil has been removed or naturally dissipated from the water. But the crab larvae discovery was an ominous sign that crude had already infiltrated the Gulf's vast food web - and could affect it for years to come.
"It would suggest the oil has reached a position where it can start moving up the food chain instead of just hanging in the water," said Bob Thomas, a biologist at Loyola University in New Orleans. "Something likely will eat those oiled larvae ... and then that animal will be eaten by something bigger and so on."
Tiny creatures might take in such low amounts of oil that they could survive, Thomas said. But those at the top of the chain, such as dolphins and tuna, could get fatal "megadoses."
When John Smith explored the Chesapeake Bay in the early 1600s he reported that oysters "lay as thick as stones." Now they are at about 2 percent of their historic population, and in 2008 the federal government declared the blue crab fishery a commercial failure.
The Bay has seen much better days, and so have its watermen. Such is this premise of a new documentary by Laura Seltzer, “The Last Boat Out." Wednesday evening I attended an advanced screening of the documentary, which is narrated by Oceana board member Sam Waterston.
The 30-minute film portrays the Chesapeake Bay's watermen as an endangered species themselves, fighting to stay afloat amid shrinking populations of crabs, oysters and fish -- their historic bread and butter.
Filmmaker Laura Seltzer focuses on a pair of middle-aged brothers who are struggling to continue the family business on the water. They represent a few of the 2800 remaining watermen, who have seen a 70% decline in 30 years.
Nutrient pollution is a big part of the problem, as Seltzer demonstrates. Excess nitrogen and phosphorus from agriculture, wastewater and fertilizer deplete the bay’s oxygen, creating dead zones that can’t sustain life.
- Ocean Roundup: Fiddler Crabs Found Far North of Their Range, 500 Dead Sea Lions Discovered in Peru, and More Posted Tue, November 25, 2014
- Sea Turtles Can Get the Bends after Capture in Fishing Gear, Says New Study Posted Tue, November 25, 2014
- Ocean Roundup: Dolphins Use Whistles as Names, Conservationists Call for Removal of Queensland Shark Nets, and More Posted Mon, November 24, 2014
- ICCAT Moves to Properly Manage Bluefin Tuna, but Doesn’t Take Action for Sharks and Swordfish Posted Wed, November 26, 2014
- Oceana in Chile Submits Recommendations for Lowering Common Hake Catch Quotas Posted Mon, November 24, 2014