
AP News: Banned Decades Ago, PCBs Still Posing Threat to Wildlife
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AP News: Banned decades ago, PCBs still posing threat to wildlife
Published by AP News: December 13, 2021
The Marine Mammal Center responds to 800 stranded marine mammals yearly along 600 miles (965 kilometers) of California coast. A 2020 study of stranded adult sea lions concluded that PCBs and DDT, which also was banned decades ago, are contributing to cancer rates as high as 23%.
“That rate of cancer is mostly unprecedented in wildlife,” said Cara Field, medical director of the center, adding that the disease caused a “complete systemic breakdown” in the animals and their blubber had much higher levels of PCBs than those without cancer.
Cancer Research at The Marine Mammal Center
Cancer was first diagnosed in California sea lions at The Marine Mammal Center in 1979. Since then, our veterinarians and scientists have contributed to a number of scientific papers on cancer in marine mammal populations.
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Contaminant Exposure and Herpesvirus Associated with Cancer in Wild Sea Lions
Read More{"image":"\/Animals\/Wild\/California sea lion\/cropped-images\/csl-on-a-rock-shutterstock-191-0-3072-2400-1617060454.jpg","alt":"California sea lion on a rock","title":"Unlocking the Role of a Genital Herpesvirus in California Sea Lion Cervical Cancer","link_url":"https:\/\/www.marinemammalcenter.org\/publications\/unlocking-the-role-of-a-genital-herpesvirus-in-california-sea-lion-cervical-cancer","label":"Research Paper","type":"publication"}

Unlocking the Role of a Genital Herpesvirus in California Sea Lion Cervical Cancer
Read More{"image":"\/Animals\/Wild\/California sea lion\/cropped-images\/sea-lion-mom-pup-shutterstock-338-0-3131-2446-1603926801.jpg","alt":"California sea lion mom and pup","title":"Effects of In Vitro Exposure to PCBs on California Sea Lions","link_url":"https:\/\/www.marinemammalcenter.org\/publications\/effects-of-in-vitro-exposure-to-pcbs-on-california-sea-lions","label":"Research Paper","type":"publication"}

{"image":"\/Animals\/Patients\/California sea lions\/cropped-images\/csl-resting-c-the-marine-mammal-center-605-0-3523-2751-1603927376.jpg","alt":"California sea lion resting on the pen floor with a young sea lion in the background","title":"Prevalence of Cancer in Stranded California Sea Lions (2005-2015)","link_url":"https:\/\/www.marinemammalcenter.org\/publications\/prevalence-of-cancer-in-stranded-california-sea-lions","label":"Research Paper","type":"publication"}

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Los Angeles Times: The numbers of gray whales migrating along the California coast continue to plummet
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ABC7 San Francisco: Animal trauma could be linked to bad human behavior, Bay Area marine mammal experts say
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The Marine Mammal Center reports high levels of marine mammal disturbance in Central and Northern California for third year in a row
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Read Morepollution
Cara Field
California Sea Lion