{"id":62975,"date":"2023-04-22T09:20:17","date_gmt":"2023-04-22T13:20:17","guid":{"rendered":"https:\/\/cablemanpro.com\/wallstreetpr\/scientists-identify-cause-of-caribbean-sea-urchin-die-off-62975"},"modified":"2023-04-22T09:20:17","modified_gmt":"2023-04-22T13:20:17","slug":"scientists-identify-cause-of-caribbean-sea-urchin-die-off","status":"publish","type":"post","link":"https:\/\/cablemanpro.com\/wallstreetpr\/scientists-identify-cause-of-caribbean-sea-urchin-die-off-62975","title":{"rendered":"Scientists identify cause of Caribbean sea urchin die-off"},"content":{"rendered":"
\n

Last year, sea urchins in the Caribbean started getting sick \u2014 shedding their spines, dying off and throwing reef ecosystems into chaos. Now, scientists think they\u2019ve caught the killer in this marine murder mystery.<\/p>\n

A tiny single-celled parasite is to blame for the massive die-off, researchers reported Wednesday in the journal Science Advances.<\/p>\n

“The case is closed,” said study author Mya Breitbart, a marine microbiologist at the University of South Florida.<\/p>\n

ALLIGATOR SPOTTED ON TEXAS BEACH BY SEA TURTLE PATROLLERS: ‘CAUGHT BY SURPRISE’<\/strong><\/a><\/p>\n

These long-spined sea urchins, or Diadema antillarum, are prickly black creatures that hide out in reefs across the Caribbean. They play a key role as “lawnmowers” of the reef, Breitbart said, eating up the algae that grows on corals.<\/p>\n

But in January 2022, these animals started showing strange symptoms \u2014 their sharp spines drooping and falling off, their suction-cup feet losing their grip \u2014 before dying off in droves, from the Virgin Islands to Puerto Rico to Florida.<\/p>\n

For marine scientists, it was deja vu: Another die-off swept through the region in the 1980s and slashed sea urchin populations by around 98%.<\/p>\n

That case was never solved. But this time, an international team of researchers jumped into action, taking samples from sick urchins and healthy ones across the Caribbean<\/a> to look for genetic clues.<\/p>\n

They didn\u2019t see signs of viruses or bacteria, said study author Ian Hewson, who researches marine diseases at Cornell University<\/a>. But they did spot traces of tiny single-celled organisms called ciliates, which only showed up in the sick urchins.<\/p>\n

Though most ciliates don\u2019t cause disease, this kind has been linked with other aquatic outbreaks, making it a prime suspect, Hewson said.<\/p>\n

FLORIDA FISHING ACCIDENT KILLS VENEZUELAN BILLIONAIRE’S BANKER SON WHO LEAPT OVERBOARD TO SAVE FIANCEE<\/u><\/strong><\/a>Caribbean coral<\/u><\/strong><\/p>\n

To confirm they\u2019d caught the killer, scientists placed the parasites in tanks with healthy urchins grown in captivity to see how they\u2019d react. Out of 10 urchins who were pitted against the tiny creatures, 60% of them died \u2014 after showing the same symptoms researchers were seeing in the wild.<\/p>\n

It’s possible that this same parasite also caused the die-off in the 1980s, but scientists can\u2019t be sure, Breitbart said.<\/p>\n

And they haven\u2019t figured out a way to treat the diseased urchins<\/a>. But they\u2019re hopeful that knowing the source of the die-offs will help conserve the reefs, especially once they learn more about how the parasites spread, Breitbart said.<\/p>\n

These urchin deaths and other stresses have already transformed the reefs, added Don Levitan, a marine scientist at Florida State University who was not involved with the study.<\/p>\n

Back before the first sea urchin die-off, Levitan recalled seeing reefs in the U.S. Virgin Islands blanketed in the spiny creatures. Now, those reefs look much different \u2014 choked by algae, struck by coral disease and stressed out from rising temperatures.<\/p>\n

“Coral reefs in the Caribbean are in trouble,” Levitan said. “We\u2019re at a different place than we were 30, 40 years ago.”<\/p>\n<\/div>\n

Source – https:\/\/www.foxnews.com\/us\/scientists-identify-cause-caribbean-sea-urchin-die-off <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

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