Diseased Alaska seals tested for radiation have abnormal brain growths, undersized lymph nodes — Environmental cause indicated — Also found in Russia, Canada — Bacteria becoming blood borne — White spots on liver — Walruses next? (6 PHOTOS & MAP)

Published: December 28th, 2011 at 2:25 pm ET
By ENENews
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Deaths of Ringed Seals in Alaska an Unusual Mortality Event, Environmental News Service, Dec. 20, 2011 [Emphasis Added]:

Unusual Mortality Event Declared

  • National Oceanic and Atmospheric Administration declared the recent deaths of ringed seals in [...] Alaska an unusual mortality event
  • Since mid-July, more than 60 dead and 75 diseased seals, most of them ringed seals, have been reported in Alaska
  • Reports continuing to come in
  • U.S. Fish and Wildlife Service also identified diseased and dead walruses
  • A decision by the Service on making an an unusual mortality declaration for Pacific walrus in Alaska is pending
  • Tests indicate a virus is not the cause
  • Walruses and ringed seals in Russia, and ringed seals in Canada, have reportedly suffered similar symptoms
  • While it is not clear if the disease events are related, the timing and location of the disease suggests the possibility of transmission between the populations, or shared exposure to an environmental cause

Symptoms

  • Seals and walruses suffering from this disease have skin sores usually on the hind flippers or face
  • Patchy hair loss
  • Some of the diseased animals have exhibited labored breathing
  • Appear lethargic
  • Do not flee from humans as they usually do
  • Necropsies have found abnormal growths in the brain
  • Some seals and walruses have undersized lymph nodes which may indicate compromised immune systems

Dr. Stephen Raverty, veterinary pathologist with the Provincial Veterinary Diagnostic Lab in British Columbia

  • “These appear to be ulcerated lesions with secondary infections”
  • “Opportunistic yeast and fungi and bacteria have invaded”
  • “Our analysis is not completed”
  • “It could be an environmental factor or more than one disease”
  • “We are screening for 18 recognized pathogens, but all the lab results have come back negative
  • “We think defects in the skin are allowing pathogens to migrate into the animals”
  • Bacteria are becoming blood borne and localizing to the liver
  • Causing white spots on the liver, hepatitis and fluid in the lungs

See earlier report: Reuters: Radiation tests underway on dead and diseased seals in Alaska -- Suffering bleeding lesions, hair loss (PHOTO)

Large Bald Spot

Published: December 28th, 2011 at 2:25 pm ET
By ENENews
Email Article Email Article
103 comments

Related Posts

  1. Reuters: Radiation tests underway on dead and diseased seals in Alaska — Suffering bleeding lesions, hair loss (PHOTO) December 28, 2011
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  5. Marine biologist in Canada: Salmon species needs to be tested for radiation — Gov’t doesn’t want us to know August 19, 2011

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