Despite their predation on zebra mussels, what is noted about the drum's ability to control this invasive species?

Answer

Their feeding habits are not sufficient to significantly control or curb the overall spread

Although the drum’s predation causes a higher mortality rate for zebra mussels, evidence suggests their feeding habits are insufficient to significantly control or curb the overall spread of this invasive species.

Despite their predation on zebra mussels, what is noted about the drum's ability to control this invasive species?
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