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Sea Urchins To The Rescue Help Revive Ailing Reefs

Sea Urchins

Florida has an underappreciated secret weapon to help heal its ailing reefs: prickly sea urchins.

This week, the National Oceanic and Atmospheric Administration unveiled a $97 million rescue effort expected to take five to seven years. Part of the plan will include an unprecedented lab-breeding program to help revive long-spined sea urchins, a shimmering black-spined urchin and one of the largest on the planet.

The move was made possible after University of Florida researchers at The Florida Aquarium succeeded in producing lab-bred urchins for the first time in large numbers this summer.

Florida’s reefs were once crawling with the spindly black urchins, scouring reefs and devouring the thick, weedy algae. That prevented the algae from growing too thick and blocking the light coral need to co-exist with the tiny single-celled algae that live in their tissue.

But in the 1980s, a mysterious disease spread across the Caribbean, wiping out 97 percent of the sea urchins, Pilnick said. Scientists still aren’t quite sure what triggered the disease, but the results were dramatic.

This past June, the Tampa-based Florida Aquarium lab, run by UF fisheries researcher Joshua Patterson, succeeded at breeding 100 – enough that once replicated could begin the arduous work of restocking the reefs. The next phase of the work will focus on how to deliver the baby urchins to the reefs – determining the optimal age and timing – so that they can produce the millions needed, Pilnick said.

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“Absolutely, it’s possible to do that. When we’re in the lab, when we’re growing these from gametes, we can collect a couple million eggs at a time,” he said. “As we get better at this and as we continue to do the research and development, we’ll be able to improve upon that 100.”

Read more here: Sea Urchins To The Rescue: Florida Researchers Launch Breeding Program To Help Revive Ailing Reefs | WJCT NEWS

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