New research from scientists at Dartmouth College suggests that mercury accumulation in fish could be worsened as oceans grow warmer. This is one of the first studies to examine mercury accumulation in fish in both a laboratory setting and wild habitat.
The Dartmouth-based team studied killifish living in Maine salt marshes and others kept in a lab at varying temperatures. The killifish living in marshes fed on insects and worms, while the lab-based fish were fed mercury-enriched food. They discovered that fish kept in warmer water grew less, ate more, and accumulated higher levels of mercury.
Industrial pollution releases mercury into the air, which then makes its way into rivers and oceans and into marine animals. Many people worry about the increasing levels of mercury found within seafood and the harmful health effects it can pose.
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