Dolphins Are Dying In Record Numbers Because …
|January 12, 2014||Posted by Staff under Environmental|
This 2014 excerpt of Pacific Standard, Jan 9, is by Noah Davis.
Between July 1 and December 15 along the American Mid-Atlantic Coast, 996 dolphins were “stranded,” which is marine-biology speak for a much darker reality. Compare that figure to the 117 average during the same period between 2007 and 2012.
This isn’t the first one. Between June 1987 and May of 1988, more than 700 bottlenose dolphins died in the Mid-Atlantic. It’s estimated that the figure represented roughly half of the Mid-Atlantic population. Marine biologists discovered that cetacean morbillivirus, which is in the same genus as measles, killed the dolphins.
Morbillivirus is also to blame for the recent deaths.
Morbillivirus is endemic to the dolphin environment. It’s always floating around, waiting to be passed through the air via exhalation from a dolphin’s blowhole. So why are they dying off in 2013?
One theory, according to Erin Fougeres, a marine biologist with NOAA Fisheries, is that outbreaks are cyclical. “Those bottlenose dolphins that don’t die develop natural antibodies,” she told me over the phone. “As those animals slowly die out of the population, herd immunity drops which can lead to an outbreak. That’s what we think it’s happening.”
Dolphins act like the proverbial canaries in a coal mine. “We will continue to look and see if there are any underlying causes that might make them more susceptible to the virus this year versus other years,” she said. “Something like global warming.”
There was an unrelated UME in Louisiana’s Barataria Bay, an area affected by the BP Deepwater Horizon oil spill. All the deaths aren’t linked but.
Ed. Notes: With power comes responsibility, supposedly. Human industry has the power to harm nature, so where is the responsibility not to? We humans need to strengthen our ties to the natural world. Perhaps a share of the worth of Mother Earth would do that. The healthier the ecosystem, the fatter our “rent” dividend. The old bottom line would be pulling on the same end of the rope with stewardship. It’d align the interests of people and planet both.