Alaska

Among butter clams, which pose toxin dangers to Alaska harvesters, size matters, study indicates • Alaska Beacon

Published

1 year ago

November 21, 2024

Among butter clams, which pose toxin dangers to Alaska harvesters, size matters, study indicates • Alaska Beacon

Butter clams, important to many Alaskans’ diets, are notorious for being sources of the toxin that causes sometimes-deadly paralytic shellfish poisoning.

Now a new study is providing information that might help people harvest the clams more safely and monitor the toxin levels more effectively.

The study, led by University of Alaska Southeast researchers, found that the meat in larger butter clams have higher concentrations of the algal toxin that causes PSP, than does the meat in smaller clams.

“If you take 5 grams of tissue from a small clam and then 5 grams of tissue from a larger clam, our study suggested that (in) that larger clam, those 5 grams would actually have more toxins — significantly more toxins — than the 5 grams from that smaller clam,” said lead author John Harley, a research assistant professor at UAS’ Alaska Coastal Rainforest Center.

Partners in the study were the Sitka Tribe of Alaska, which operates one of only two laboratories in the state that test shellfish for algal toxins, and with other organizations.

It is one of the few studies to examine how toxin levels differ between individual clams, Harley said.

The findings came from tests of clams collected from beaches near Juneau on five specific days between mid-June and mid-August of 2022.

The 70 clams collected, which were of varying sizes, yielded a median level of saxitoxins of 83 micrograms per gram, just above the 80-microgram limit. Toxin concentrations differed from clam to clam, ranging from so low that they were at about the threshold for detection to close to 1,100 micrograms per gram.

And there was a decided pattern: Toxin concentrations “were significantly positively correlated with butter clam size,” the study said.

A woman sorts though a pile of butter clams on a dock in Alaska in 1965. Butter clams have long been harvested for personal consumption in Alaska. (Photo provided by the Alaska Department of Fish and Game)

Among the tested clams in the top 25% size, 81% had concentrations above the regulatory threshold, while among the quartile with the smallest size, only 19% came in at above the threshold.

The typical butter clam has a shell that is about 3 inches wide and up to 5 inches in length; clams in the study ranged in shell width from less than 1.5 inches to more than 4 inches. The mass of meat inside the shells of tested clams ranged from 3.87 grams to 110 grams, the study said.

The detections of toxins were in spite of the lack of significant algal blooms in the summer of 2022 – making that year an anomaly in recent years.

In sharp contrast, the summer of 2019 — a record-warm summer for Alaska — was marked by several severe harmful algal blooms. Near Juneau, toxin concentrations in blue mussels, another commonly consumed shellfish, were documented at over 11,000 micrograms per gram, and the toxins killed numerous fish-eating Arctic terns in a nesting colony in the area.

Just why the butter clams tested for the new study showed concentrations of toxins in a low-bloom year is a question for further review.

Butter clams are known to pose special risks because they retain their algal toxins much longer than do other toxin-affected shellfish. Like other species, butter clams do detoxify over time, but they do so much more slowly, Harley said. The clams in the study were all at least a few years old, and there are some possible explanations for why they still retained toxins in the summer of 2022, he said.

“Maybe these larger clams, because they’ve been consistently exposed to harmful algal blooms several years in a row, maybe they just haven’t had a chance to detoxify particularly well,” he said.

The unusual conditions in the summer of 2022 mean that the results of this study may not be the same as those that would happen in a summer with a more normal level of harmful algal blooms, he said. “It still remains to be seen if this relationship between size and toxin is consistent over different time periods and different sample sites and different bloom conditions,” he said.

Research is continuing, currently with clams collected in 2023, he said. That was a more typical year, with several summer algal blooms.

The algal toxin risks in Alaska are so widespread that experts have coined a slogan that reminds harvesters to send samples off for laboratory testing before eating freshly dug clams and similar shellfish: “Harvest and Hold.”

Harley said the fact that there are toxins in clams even when an active bloom is not present “is a very real concern” for those who have depended on harvest. The Southeast Alaska Tribal Ocean Research Network, known as SEATOR, has been monitoring shellfish in winter and other times beyond the usual months of algal blooms, he noted.

That monitoring has turned up cases of toxin-bearing shellfish well outside of the normal summer seasons. Just Tuesday, SEATOR issued an advisory about butter clams at Hydaburg, collected on Saturday, that tested above the regulatory limit for safe consumption.

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Alaska

Over $150K worth of drugs seized from man in Juneau, police say

Published

6 hours ago

February 27, 2026

Press Room

Over 0K worth of drugs seized from man in Juneau, police say

JUNEAU, Alaska (KTUU) – An Alaska drug task force seized roughly $162,000 worth of controlled substances during an operation in Juneau Thursday, according to the Juneau Police Department.

Around 3 p.m. Thursday, investigators with the Southeast Alaska Cities Against Drugs (SEACAD) approached 50-year-old Juneau resident Jermiah Pond in the Nugget Mall parking lot while he was sitting in his car, according to JPD.

A probation search of the car revealed a container holding about 7.3 gross grams of a substance that tested presumptively positive for methamphetamine, as well as about 1.21 gross grams of a substance that tested presumptively positive for fentanyl.

As part of the investigation, investigators executed a search warrant at Pond’s residence, during which they found about 46.63 gross grams of ketamine, 293.56 gross grams of fentanyl, 25.84 gross grams of methamphetamine and 25.5 gross grams of MDMA.

In all, it amounted to just less than a pound of drugs worth $162,500.

Investigators also seized $102,640 in cash and multiple recreational vehicles believed to be associated with the investigation.

Pond was lodged on charges of second-degree misconduct involving a controlled substance, two counts of third-degree misconduct involving a controlled substance, five counts of fourth-degree misconduct involving a substance and an outstanding felony probation warrant.

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Alaska

Sand Point teen found 3 days after going missing in lake

Published

18 hours ago

February 27, 2026

Press Room

Sand Point teen found 3 days after going missing in lake

SAND POINT, Alaska (KTUU) – A teenage boy who was last seen Monday when the canoe he was in tipped over has been found by a dive team in a lake near Sand Point, according to a person familiar with the situation.

Alaska’s News Source confirmed with the person, who is close to the search efforts, that the dive team found 15-year-old Kaipo Kaminanga deceased Thursday in Red Cove Lake, located a short drive from the town of Sand Point on the Aleutian Island chain.

Kaminanga was last seen canoeing with three other friends on Monday when the boat tipped over.

A search and rescue operation ensued shortly after.

Alaska Dive Search Rescue and Recovery Team posted on Facebook Thursday night that they were able to “locate and recover” Kaminanga at around 5 p.m. Thursday.

“We are glad we could bring closure to his family, friends and community,” the post said.

This is a breaking news story and will be updated when more details become available.

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Alaska

Opinion: Homework for Alaska: Sales tax or income tax?

Published

1 day ago

February 26, 2026

Press Room

Opinion: Homework for Alaska: Sales tax or income tax?

iStock / Getty Images

This is a tax tutorial for gubernatorial candidates, for legislators who will report to work next year and for the Alaska public.

Think of it as homework, with more than eight months to complete the assignment that is not due until the November election. The homework is intended to inform, not settle the debate over a state sales tax or state income tax — or neither, which is the preferred option for many Alaskans.

But for those Alaskans willing to consider a tax as a personal responsibility to help fund schools, roads, public safety, child care, state troopers, prisons, foster care and everything else necessary for healthy and productive lives, someday they will need to decide on a state income tax or a state sales tax after they accept the checkbook reality that oil and Permanent Fund earnings are not enough.

This homework assignment is intended to get people thinking with facts, not emotions. Electing the right candidates will be the first test.

Alaskans have until the next election because nothing will change this year. It will take a new political alignment led by a reality-based governor to organize support in the Legislature and among the public.

But next year, maybe, with the right elected leadership, Alaskans can debate a state sales tax or personal income tax. Plus, of course, corporate taxes and oil production taxes, but those are for another school day.

One of the biggest arguments in favor of a state sales tax is that visitors would pay it. Yes, they would, but not as much as many Alaskans think.

Air travel is exempt from sales taxes. So are cruise ship tickets. That’s federal law, which means much of what tourists spend on their Alaska vacation is beyond the reach of a state sales tax.

Cutting further into potential revenues, state and federal law exempts flightseeing tours from sales tax, which is a particularly costly exemption when you think about how much visitors spend on airplane and helicopter tours.

That leaves sales tax supporters collecting from tourists on T-shirts, gifts for grandchildren, artwork, postcards, hotels, Airbnb, car rentals and restaurant meals. Still a substantial take for taxes, but far short of total tourism spending.

An argument against a state sales tax is that more than 100 cities and boroughs already depend on local sales taxes to pay for schools and other public services. Try to imagine what a state tax piled on top of a local tax would do to kill shopping in Homer, already at 7.85%, or Kodiak, Wrangell and Cordova, all at 7%, and all the other municipalities.

Supporters of an income tax say it would share the responsibility burden with nonresidents who earn income in Alaska and then return home to spend their money.

Almost one in four workers in Alaska in 2024 were nonresidents, as reported by the state Department of Labor in January. That doesn’t include federal employees, active-duty military or self-employed people.

Nonresidents earned roughly $3.8 billion, or about 17% of every dollar covered in the report.

However, many of those nonresident workers are lower-wage and seasonal, employed in the seafood processing and tourism industries, unlikely to pay much in income taxes. But a tax could be structured so that they pay something, which is fair.

Meanwhile, higher-wage workers in oil and gas, mining, construction and airlines (freight and passenger service) would pay taxes on their income earned in Alaska, which also is fair.

It comes down to what would direct more of the tax burden to nonresidents: a tax on income or on visitor spending. Wages or wasabi-crusted salmon dinners.

Larry Persily is a longtime Alaska journalist, with breaks for federal, state and municipal public policy work in Alaska and Washington, D.C. He lives in Anchorage and is publisher of the Wrangell Sentinel weekly newspaper.

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