News from Maine’s Island and Coastal Communities volume 36, № 6
published by the island institute
Digging the softshells
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august 2022 n free circulation: 50,000
workingwaterfront.com
CLAM GARDENING—
Research may help reverse decline By Sarah Craighead Dedmon
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ummer in Maine brings hungry vacationers seeking lobster rolls, blueberry pie, and the iconic softshell clam—fried, steamed, or in chowder. Clam prices are spiking in response to demand and hundreds of Maine clammers are working to meet it while the market is hot. “I figure I’ll make 75% to 80% of my yearly income between June and October,” says David Cale, who clams in Machiasport, where he also serves on the town’s shellfish committee. By value, softshell clams are Maine’s second largest fishery behind lobster. They’re a distant second but drew a respectable $25 million into the Maine economy last year. There was a time when Maine’s clammers brought in much, much more. In 1977, they landed 7.8 million pounds, compared to 1.5 million pounds last year. The numbers fluctuate across the decades, but the overall trajectory is down. “The landings data are very scary,” says Brian Beal, a marine ecology professor at the University of Maine at Machias and Director of Research at the Downeast Institute. Beal clammed his way through
Dr. Brian Beal of the Downeast Institute on Beals Island works with Madeline Williams setting up a test pot for softshell clams. PHOTO: LESLIE BOWMAN
high school and college and remembers when the harvest was better. “If this were the pulp industry, or the lobster industry that experienced the loss of this many jobs, it would be a hue and cry,” says Beal. “But it’s just the lowly clam.”
Ask the reason for the softshell clam’s decline, and Beal does not hesitate. “It’s warming water. We’re seeing higher and higher summer temperatures and we’re getting milder continued on page 13
Young lobsters not surviving first weeks Juvenile food sources may be key By Fritz Freudenberger
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here is a crustacean conundrum in the Gulf of Maine. Despite increased numbers of lobsters being born in recent years, the
number of adolescents has declined. Something is affecting the survival rates of lobsters in their first few weeks of life, and researchers from Bigelow Laboratory for Ocean Sciences and the University of Maine think it may have to do with how they eat.
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“Baby lobsters undergo such incred- bottom of the ocean has decreased ible changes during their first month,” during the same time period. said Evie Layland, one of several One possible reason is that warming UMaine graduate students conditions in the Gulf investigating the decline of Maine are changing under the guidance of their food. Scientists have Research Bigelow Laboratory scienobserved that a decline in a has already tists. “They also face a lot common prey species called of challenges. They have Calanus finmarchicus revealed to avoid predators, search strongly correlates with the that some for food that may not be decline of juvenile lobsters as plentiful as it used to be, lobster larvae and think the two may be and respond to changing show signs of related. However, despite environmental conditions. how iconic the North starvation in The little dudes just have a American lobster is to the lot on their plates.” region, the diet of young their earliest There has been a steady lobsters remains a mystery. stages… increase in the number of Alex Ascher, another adult lobsters in the Gulf UMaine graduate student of Maine over the last working at Bigelow Lab, is few decades. This has led to a record trying to answer this question. After number of baby lobsters swimming dissecting their stomachs, he uses in the water during their larval stages. DNA evidence and keen eyes to figure Paradoxically, however, the number out what’s inside. of juvenile lobsters that settle to the continued on page 13