Hello! I would like to receive literature (scientific and/or grey) addressing or including the possible effects of the macrophytes Elodea canadensis or E. nuttallii on lake fish (ecology, population dynamics, foraging behavior, etc.), especially (but not limited to) from areas where Elodea is nonnative. I know that there is literature about Elodea-invertebrate associations, but I specifically need something about the effects on fish. Given the tabula rasa status of my current knowledge on the topic, anything will be greatly appreciated. Thanks in advance!
Indeed, it is very common to find articles on the ecological aspects of Elodea, mainly those published by Barrat-Segretain and colleagues. Specifically for the effects of invasive Elodea on fish is not common, but see http://dx.doi.org/10.1899/03-097.1.
I know one paper about dominating role of Elodea canadensis in food of roach (Rutilus rutilus) and rudd (Scardinius erythrophthalmus) from Polish lakes. Because Elodea is introduced species in Poland, it means that these fishes changed their feeding behaviour relatively to existence of new food component.
Paper: Prejs A., Jachowska H., 1978. Lake macrophytes as the food of roach (Rutilus rutilus) and rudd (Scardinius erythrophthalmus). I. Species composition and dominance relations in the lake and food. Ekologia Polska, 26(3): 429-437.
hello,
in GB and Ireland (www.fisheriesireland.ie) there is extensive knowledge on this topic. If you go to the respective sites (an example is given above) you will find further information.
At Lake Constance Elodea seems not to influence directly the fish community , but it is in some areas and some periods of the year a problem for professional fisheries
Maybe have a look at Eric Dibble's work - not specifically on Ecan but some good stuff there relevant to your interests I would think, try the Schultz & Dibble paper for example.
http://www.cfr.msstate.edu/wildlife/people/allpubs.asp?persID=10&id=8
Cheers
Kevin
Paola - there was a bunch of work done in Lake St. Clair in the 1990s that originated from the zebra mussel invasion of North America. The ecology of that system changed so radically owing to increased water clarity, changes in nutrient dynamics from pelagic to benthic, continual inputs of combined sewer overflows and agricultural runoff. Aquatic macrophytes went bananas in that system - Elodea was one of the main ones. Check out the Great Lakes Science Center library from that time. A lot of work was done characterizing those ecosystem shifts.
Good Luck.
Ray
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