Study shows parasites outweigh predators

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Scientists are studying the health of this estuary and its surrounding salt marsh in Baja Mexico. Credit: U.S. Geological Survey
Scientists are studying the health of this estuary and its surrounding salt marsh in Baja, Mexico. Credit: U.S. Geological Survey
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In a study of free-living and parasitic species in three estuaries on the Pacific coast of California and Baja California, a team of researchers from the University of California, Santa Barbara, the United States Geological Survey, and Princeton University has determined that parasite biomass in those habitats exceeds that of top predators, in some cases by a factor of 20. Their findings, which could have significant biomedical and ecological implications, appear in the July 24 issue of the science journal Nature.


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