Saving Seafood

  • Home
  • News
    • Alerts
    • Conservation & Environment
    • Council Actions
    • Economic Impact
    • Enforcement
    • International & Trade
    • Law
    • Management & Regulation
    • Regulations
    • Nutrition
    • Opinion
    • Other News
    • Safety
    • Science
    • State and Local
  • News by Region
    • New England
    • Mid-Atlantic
    • South Atlantic
    • Gulf of Mexico
    • Pacific
    • North Pacific
    • Western Pacific
  • About
    • Contact Us
    • Fishing Terms Glossary

Cape Cod researchers use robots to monitor red tide

June 4, 2018 — Leaning over the side of a small skiff in Salt Pond, Woods Hole Oceanographic Institution researcher David Kulis shook the excess water out of a plankton net, then emptied the contents into a water bottle.

The gold tint to the water, he said, was likely Alexandrium, single-cell algae that produce a powerful neurotoxin. When concentrated in shellfish meat that feed on algae, the toxin can paralyze respiratory muscles in humans, a condition known as paralytic shellfish poisoning, which can be fatal.

Kulis and Northeastern University intern Taylor Mannes were using the tools plankton researchers had relied on for decades: a windsock-shaped net, with fine mesh to capture the single-celled organisms, and a Niskin bottle, originally developed in 1894 for polar research to retrieve samples at discrete depths. Lowered by hand to marks on a line corresponding to various depths, its opening is closed by sliding a lead weight down the line.

But with human health and a burgeoning shellfish and aquaculture industry in the balance, red tide research has gone decidedly high-tech. Sophisticated instruments are now deployed offshore in the Gulf of Maine and at inshore sites like Salt Pond in North Eastham.

Salt Pond is a natural laboratory, said Michael Brosnahan, a red tide researcher at WHOI. It already has a native population of red tide cells that survive the harsh New England winter as hardened cysts on the bottom of the pond. The incoming tide also pushes additional cysts from the larger marsh down a narrow creek and deposits them in deeper water in the pond, beyond the reach of the outgoing tide.

Red tide algae produce food through photosynthesis, and when the cysts hatch in the spring, they swim up into sunlit waters between five feet and eight feet deep. They remain at depths below the outlet creek channel, and relatively few of the free swimming cells are swept back out into the marsh by the tide.

Read the full story at the Cape Cod Times

Recent Headlines

  • Climate change and overfishing threaten once ‘endless’ Antarctic krill
  • Judge faults federal plan to protect orcas from Southeast Alaska salmon harvests
  • Ruling clouds future of Southeast Alaska king salmon fishery
  • EDITORIAL: U.S. Fish and Wildlife Service Strategy to Reintroduce Sea Otters is Flawed
  • Judge blasts ‘mitigation’ that would imperil both orca and salmon
  • Whales Hitting Boats – Conservation and Conflict
  • ALASKA: Unnamed investor offers up to $60 million for Alaska’s Pebble mine project
  • Science to Support Sustainable Shellfish and Seaweed Aquaculture Development in Alaska State Waters

Most Popular Topics

Alaska Aquaculture ASMFC Atlantic States Marine Fisheries Commission California China Climate change Coronavirus COVID-19 Donald Trump groundfish Gulf of Maine Gulf of Mexico Illegal fishing IUU fishing Lobster Maine Massachusetts Mid-Atlantic National Marine Fisheries Service National Oceanic and Atmospheric Administration NEFMC New Bedford New England New England Fishery Management Council New Jersey New York NMFS NOAA NOAA Fisheries North Atlantic right whales North Carolina North Pacific offshore energy Offshore wind Pacific right whales Salmon Scallops South Atlantic Tuna Western Pacific Whales wind energy Wind Farms

Daily Updates & Alerts

Enter your email address to receive daily updates and alerts:
  • This field is for validation purposes and should be left unchanged.
Tweets by @savingseafood

Copyright © 2022 Saving Seafood · WordPress Web Design by Jessee Productions