zebras are foul little creatures who pollute the waters with their waste , and their body contains even more pollutants
this waste sits on the bottom contaminating the food source for bottom dwelling aquatic critters
.. i feel sorry for those bass who dig through the zebra covered rocks to find craws, OUCH!
this is a serious issue, we should take note
As significant filter feeders, zebra mussels may increase human and wildlife exposure to organic pollutants such as PCB's and PAHs. Early research shows that zebra mussels can rapidly accumulate organic pollutants within their tissues to levels more than 300,000 times greater than concentrations in the environment. Through the introduction of another invasive aquatic fish, the round goby into Lake Erie, the problem of contaminants up the food chain have been exacerbated---the gobies prey primarily upon zebra mussels, and then, they in turn are preyed upon by smallmouth bass, largemouth bass, rock bass, and walleye, which angler catch and eat. These contaminants can be passed up the food chain so that any fish or waterfowl consuming zebra mussels will also accumulate these organic pollutants. Likewise, human consumption of these same fish and waterfowl could result in further risk of exposure.