| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
3847
|
Gymnocephalus cernua
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
dominant pairwise interaction described as predation
|
Great Lakes
|
13595
|
|
7739
|
Gymnocephalus cernua
|
Predation/Herbivory
|
Observational
|
Field
|
In Lake Superior, consumption of cisco (Coregonus artedi) eggs by ruffe (Gymnocephalus cernua) has been documented at a level that could impact the population over winter months.
|
Lake Superior
|
33438
|
|
7740
|
Gymnocephalus cernua
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
There has been a great deal of concern that ruffe (Gymnocephalus cernua) may have a detrimental effect on more desirable species in Lake Superior, including yellow perch (Perca flavescens) and walleye (Sander vitreus), by feeding on the young of these species.
|
Lake Superior
|
677
|
|
7741
|
Gymnocephalus cernua
|
Predation/Herbivory
|
Observational
|
Field
|
In Scotland, native perch populations have declined, and in Russia, whitefish numbers have declined because of egg predation by ruffe (Gymnocephalus cernua).
|
Scotland
|
1218
|