| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
7735
|
Gymnocephalus cernua
|
Competition
|
Experimental
|
Laboratory
|
A laboratory study with ruffe (Gymnocephalus cernua) and yellow perch (Perca flavescens) found that competition could occur between the two species, but the outcome was not always clear, as each species exhibited competitive advantages and disadvantages.
|
|
1583
|
|
7736
|
Gymnocephalus cernua
|
Competition
|
Experimental
|
Laboratory
|
Similarities in dietary preferences and feeding rates of ruffe (Gymnocephalus cernua) and yellow perch (Perca flavescens) suggest a strong possibility for interspecific competition.
|
|
23314
|
|
7737
|
Gymnocephalus cernua
|
Competition
|
Experimental
|
Laboratory
|
In a laboratory setting, ruffe(Gymnocephalus cernua) exhibited higher consumption rates of benthic invertebrates in darkness over bare cobble and complex substrates than did yellow(Perca flavescens).
|
|
14421
|
|
7738
|
Gymnocephalus cernua
|
Competition
|
Observational
|
Field
|
The increase in ruffe (Gymnocephalus cernua) in western Lake Superior was concurrent with declines in several fish species, including yellow perch (Perca flavescens), emerald shiner (Notropis atherinoides), and trout-perch (Percopsis omiscomaycus). However, there was a lack of clear causal evidence between the two events.
|
Lake Superior
|
9377
|