An exotic fish species called the tubenose goby made its way into the St. Clair River after it was flushed from a ship’s ballast water 11 years ago. The tubenose hasn’t spread as fast as its cousin, the round goby, but researchers were recently surprised to find the tubenose spreading further into Lake Erie. The Great Lakes Radio Consortium’s Karen Schaefer reports:
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An exotic fish species called the tubenose goby made its way into the St. Clair River after it was flushed from a ship’s ballast water 11 years ago. The tubenose hasn’t spread as fast as its cousin, the round goby, but researchers were recently surprised to find the tubenose spreading further into Lake Erie. The Great Lakes Radio Consortium’s Karen Schaefer reports:
The invader was captured this July. The tubenose is related to the round goby, whose population explosion across the Great Lakes has scientists concerned. Round gobies eat contaminant-laden zebra mussels, and then pass those toxins on to sport fish favored by humans. But Jeff Ruetter, director of Stone Lab, says the tubenose goby actually first appeared in the Great Lakes two years before its cousin and so far, isn’t widespread.
“And the concern will be with its competition with other species in the ecosystem. Is it going to force them out?”
Ruetter says the appearance of the new invader underscores the need for tighter controls on exotic species. For the Great Lakes Radio Consortium, I’m Karen Schaefer.