Saturday, August 24, 2013

Asian carp-- not (yet) in the Great Lakes

Asian Carp approaching Lake Michigan
via waterways in the greater Chicago area.
Credit:mlive
Asian carp are a group of invasive species that are working their way up tributaries of the Mississippi river and are nearing the Great Lakes.  These fish eat huge amounts of plankton  and have no established predators, and thus they could become very disruptive to the already stressed Great Lakes ecosystem.  Thus far, there have been no findings of live Asian Carp within the Great Lakes, but DNA evidence for their presence was reported last April.  It is thought to be just a matter of time before they enter the Great Lakes. Tests are continuing, especially for rivers feeding into the Great Lakes, as the fish need long rivers for breeding.

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