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The mention of Panama in his inaugural speech is not the first time he has focused on the Central American nation and its transoceanic canal.

Because they don't undergo transoceanic migrations, any contamination found in the animals' muscles likely reflects the waters they swim in.

"We were amazed to discover that our evolution experiment in tiny flasks had recapitulated the complex patterns that had been previously observed between bacteria and viruses collected at regional and transoceanic scales," said Borin.

Scientists believe the creatures arrived via ballast dumps from transoceanic freighters making their way to Great Lakes ports.

The projected losses come as the transoceanic waterway key to moving hundreds of billions of dollars in global trade each year expects its daily average for cargo ship crossings to slide by about 16%.