DETROIT – Zebra mussels, those invaders that have wreaked havoc on the Great Lakes, have found a new way to further their damaging spread: pet shops.
A citizen’s report of an invasive zebra mussel found in an aquarium moss package from a Seattle pet store prompted a U.S. Geological Survey expert on invasive aquatic species to trigger nationwide alerts. That has led to the discovery of the destructive shellfish in pet stores in at least 21 states, from Alaska to Florida and including Michigan.
A Seattle pet shop employee on Feb. 25 reported finding an invasive zebra mussel in an ornamental aquarium moss ball. Moss balls are ornamental plants imported from the Ukraine that are often added to aquariums.
USGS fisheries biologist Wesley Daniel learned about the finding March 2. Daniel coordinates the agency’s Nonindigenous Aquatic Species Database, which tracks sightings of about 1,270 nonnative aquatic plants and animals nationwide, including zebra mussels.