Sunday, April 23, 2017
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7 years after Deepwater Horizon oil spill, Louisiana dolphins struggle to reproduce

Redders48/iStock/Thinkstock(NEW YORK) — Seven years ago today, an explosion occurred on the Deepwater Horizon oil platform, killing 11 workers and triggering the worst oil spill in U.S. history. It took 87 days to cap the well. During that time, approximately 3.19 million barrels of crude oil flowed into the Gulf of Mexico.

The spill had a huge impact on marine wildlife, including wild bottlenose dolphins living in Louisiana’s Barataria Bay. A study released by the National Oceanic and Atmospheric Administration (NOAA) in April 2016 noted that the spill may have led to historically high death rates and impaired reproductive health for the group of dolphins.

Pregnant dolphins showed an 80 percent reproductive failure rate, either because the fetuses were exposed to oil spill-related compounds or because the mothers’ health suffered from the exposure, according to NOAA Fisheries.

Dolphins exposed to the oil compounds who were not pregnant were more likely to have damaged lungs and adrenal glands, which regulate hormones, and many developed bacterial pneumonia.

Kathleen Colegrove, a Veterinary Pathologist from University of Illinois who specializes in marine mammal pathology, remembered evaluating one dolphin, Y12, who was emaciated. Y12 was found to have severe lung disease on a pulmonary ultrasound. She said it was …read more

Source:: ABC News Radio Health