Saving Seafood

Maine Lobstermen to Join in Shrimp Research Project

November 11th, 2016 — As the commission that regulates Atlantic fisheries is due to vote on whether to keep the shrimp fishery open for another year because of population concerns, a research project at the Gulf of Maine Research Institute is looking to get some real numbers about those populations.

The institute is sending Maine lobstermen out with acoustic equipment that will help them learn where the shrimp are congregating over the winter, and where they lay their eggs.

Adam Baukus, a research associate at GMRI, says using sound allows researchers to cover a lot more ground. “The sampling is being done in areas that haven’t been surveyed in the past, but in the future fisheries managers may use the results to figure out whether it’s time to reopen the shrimp fishery.”

It’s been closed since a population collapse during the 2013 fishing season that’s thought to be related to warming ocean temperatures.

Read the full story at Maine Public Radio 

Sound technology helping scientists assess health of Maine shrimp population

November 10th, 2016 — This winter, a small fleet of Maine fishermen will head out to hunt for northern shrimp, even though the fishery itself has been closed for three years.

 They won’t be landing the New England delicacy so it can be eaten. The fishermen will use acoustic transducers, and a few nets and traps, to help the Gulf of Maine Research Institute learn where these small pink crustaceans congregate in our near-shore waters over the winter, where they lay their eggs. Using sound waves to survey a species as small as shrimp is a new challenge for scientists.

“We have found low-frequency sound waves are good at detecting big fish, like cod, and high frequencies are good at detecting small organisms like shrimp,” said research associate Adam Baukus of GMRI. “The technology allows us to cover a lot more of the ocean than we can with trawls or traps alone. With sound, we can do 40 miles at a time. … Traditional (trawl) surveys are lucky to cover a quarter mile.”

To collect the data, GMRI has outfitted 10 lobster boats with echosounders, high-tech fish finders, to conduct monthly surveys of near-shore waters from Kittery to Cutler in January, February and March, which is the height of what used to be a $70 million fishing season. The lobstermen, who receive small stipends to cover fuel costs, will survey the same 40-mile-long stretch of water each time.

Read the full story at the Portland Press Herald