Sea otters showed signs of a severe form of toxoplasmosis that had never been reported in other aquatic animals before, nor had it ever been detected on the California coastline.
have been linked to a strain of parasite that scientists are calling rare and unusual — one that could also pose a threat to humans and other animals.
The other three sea otters washed ashore between February and March 2022; they were deceased but considered to be in good to excellent nutritional condition prior to their deaths, said Devinn Sinnott, a graduate student in integrative pathobiology at the University of California, Davis School of Veterinary Medicine and a co-author of aNotably, the three infected females were stranded within about 16 miles of one another in San Luis Obispo County, while the male was found at Natural Bridges...
“I have studied Toxoplasma infections in sea otters for 25 years, and I have never seen such severe lesions or high parasite numbers,” Melissa Miller, a veterinary pathologist for the California Department of Fish and Wildlife, said in a statement.Experts are reporting their preliminary findings to increase awareness surrounding the strain.
Toxoplasmosis is actually common among sea otters — they are vulnerable to the infection because they live near the shoreline, where they may be exposed to the parasite’s eggs in stormwater runoff, and they eat bivalve shellfish that can hold on to the egg stage of the parasite.
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