Melting Starfish, Dying Lobsters - 2 New Studies Point To Warmer Ocean Temperatures - WP

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Warming waters in the Atlantic and Pacific oceans have increased the prevalence of diseases that are turning sea stars to mush and killing lobsters by burrowing under their shells and causing lesions, two new studies say. The outbreaks are so lethal, according to a biologist involved in both studies, that at least one species of sea star has vanished off the coasts of Washington and British Columbia and the lobster fishery, already decimated in southern New England, will likely be threatened in Maine.

In the Pacific, a wasting disease is blamed for the disappearance of the technicolor sunflower sea star. It’s also laying waste to the ochre sea star that scientists at Cornell University, the University of Puget Sound and Northeastern University, as well as other institutions, examined for the latest research. Their reports were published this week.

Numerous climate studies have shown that the oceans are warming. In addition, 30 percent of the carbon released into the atmosphere ends up there, leading to acidification that’s further destroying coral, shell life and other organisms.

The sea-star study was led by Morgan E. Eisenlord, an evolutionary biologist at Cornell, and published in the Proceedings of the Royal Society B. Both in a laboratory and at 16 sites on the San Juan Islands off Washington’s coast, researchers determined that ochre sea stars gradually became sicker as water temperatures rose slightly. Conditions simulated in the lab confirmed what the scientists observed in the field. As temperatures rose, the disease became more prevalent, and adult ochres died within days. The disease, plus death, was more prominent in temperatures between 54 degrees and 66 degrees Fahrenheit. For the adults, the risk of death was 18 percent higher at 66 degrees.


EDIT

https://www.washingtonpost.com/news/energy-environment/wp/2016/02/17/warming-oceans-are-turning-sea-stars-to-goo-and-killing-lobsters-scientists-say/

[longship]

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