| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
4200
|
Clupeonella cultriventris
|
Competition
|
Anecdotal
|
N/A
|
Clupeonella cultriventris has become very abundant in the Volga River reservoirs, contributing to the decline in native populations. It may compete with other planktivorous pelagic fish if it attains a large population in the Great Lakes, similar to the effects of the already established Alewife
|
|
13077
|
|
4237
|
Clupeonella cultriventris
|
Competition
|
Observational
|
Field
|
C. cultriventris became superdominate (65-99% catch) in Dneprodzerzhinsk and Kremenchug reservoirs replacing bleak (Alburnus alburnus) and common roach (Rutilus rutilus) and have maintained dominate population levels for at least 40 years
|
Ukraine
|
36119
|
|
4245
|
Clupeonella cultriventris
|
Competition
|
Observational
|
Field
|
The dominance of C. cultriventris in the Volga may have suppressed native coregonid populations
|
Volga River
|
36136
|
|
5799
|
Clupeonella cultriventris
|
Competition
|
Observational
|
Field
|
In the Rybinsk Reservoir, when the Caspian Sea sprat (Clupeonella cultriventris) is very abundant (more than 50% of sample catches), it feeds on the same planktonic organisms as native species, and their feeding similarity indices are greater than 50%. When this species is less numerous, feeding similarity with native species is less than 40%.
|
Rybinsk Reservoir, Russia
|
36110
|