Fisheries committee  And Calumet Harbor as well, number 3.

Fisheries committee  It's a lock-and-dam structure, and we know that the fish can pass through lock-and-dam structures, as they have throughout the Mississippi.

Fisheries committee  The thing is they wouldn't exhaust their supply. There would be a point where there was not enough food to maintain a population at a certain level, and that's why you would have those trends that go up and down. They go down because they've run out of food. Then when the numbers

Fisheries committee  That picture is one of the best forms of outreach. When the public sees this and they see this on YouTube or television, that's what really catches their attention.

Fisheries committee  I think we've had a very unsuccessful history of trying to introduce one organism to control another. It usually leads to unintended consequences. Even if that organism is controlled, it typically moves on to the next organism, which would usually be a native species, so I don't

Fisheries committee  I don't think we should treat it as inevitable. I think we should be working toward preventing the inevitable.

Fisheries committee  Eradication is very difficult to achieve. I think we can be very successful at reducing population sizes and slowing the spread. If they do end up in the Great Lakes, I certainly think that we should not say that the game is over and all is lost. There is much that we can do to m

Fisheries committee  Yes. Thank you for the question. First of all, I should point out that this map is based on matching the climate in North America to the climate in its native range. The silver carp is found much further north in its native range than is the bighead carp. In fact, I was working

Fisheries committee  The silver carp is the one that tends to eat the phytoplankton, the algae, the smaller plankton. The bighead carp feed on the zooplankton. It's like a one-two punch. The first thing any native fish feeds on after it hatches is phytoplankton, and then it moves on to zooplankton. T

Fisheries committee  I think that's related to the idea that we expect it will take time for the population to spread and increase in size. They will probably not mature until about five years of age. The generation time is an intermediate length of time compared to Great Lakes fish. We considered sp

Fisheries committee  We did not model what the ultimate size would be because there is some uncertainty still around that bioenergetics model. Certainly, the model indicates there is sufficient food for them to survive and establish a reproducing population. What the ultimate size would be, we're not

Fisheries committee  Yes. That conclusion is based on a bioenergetics model. That is the standard model for determining whether or not there's enough food in an area for a population to become established. We're talking about an established population that would number in the thousands. There's certa

Fisheries committee  The observation that it is similar to Lake Erie is a good one. I would expect the same effects you saw on one of our slides: that they could readily survive there from a climatic point of view. The bigmouth buffalo, which is more or less an Asian carp analogue, does well in Manit

Fisheries committee  In the Chicago Sanitary and Ship Canal there is no physical barrier. An electrical barrier was originally put in as a pilot barrier about 10 years ago to prevent the spread of round goby into the Mississippi River. It was built too late to do that, but then as the threat of invas

Fisheries committee  Absolutely. There is the cost of physically doing the work of building the electrical barrier versus the physical separation. Then there's the cost in trade because it would alter trade patterns and the movement of vessels in the vicinity of Chicago.