| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
5407
|
Gambusia affinis
|
Predation/Herbivory
|
Experimental
|
Laboratory
|
In a previously fishless experiment pond, Gambusia affinis decimated populations of some macroinvertebrates that were not adapted to fish predation (dytiscid beetles, baetid Ephemeroptera, corixid and gerrid hemipterans, libellulid odonates)
|
|
39140
|
|
5408
|
Gambusia affinis
|
Predation/Herbivory
|
Experimental
|
Laboratory
|
In an experimental pond, introductions of Gambusia affinis impacted the pelagic food web and reduced the abundance of Daphnia, eventually leading to a trophic cascade as phytoplankton populations increased dramatically
|
|
39138
|
|
5409
|
Gambusia affinis
|
Predation/Herbivory
|
Experimental
|
Laboratory
|
Experimental pond abundances of Daphnia, mid-sized cladocerans, and total zooplankton were lowered by the introduction of Gambusia affinis
|
|
39139
|
|
5410
|
Gambusia affinis
|
Predation/Herbivory
|
Experimental
|
Laboratory
|
In mesocosm experiments designed to mimic local community structure, Gambusia affinis directly reduced abundances of zooplankton and three native amphibian species. The resulting trophic cascades indirectly increased phytoplankton, periphyton, and freshwater snail biomass
|
|
39145
|
|
5415
|
Gambusia affinis
|
Predation/Herbivory
|
Observational
|
Field
|
Gambusia affinis, and other introduced poeciliids, have also been implicated in the decline of native damselflies on Oahu, Hawaii. Often the distributions of the damselflies and introduced fishes were found to be mutually exclusive, probably resulting from predation of the fishes on the insects
|
Hawaii
|
1894
|
|
5416
|
Gambusia affinis
|
Predation/Herbivory
|
Experimental
|
Laboratory
|
In mesocosm experiments, introduced Gambusia affinis had extreme negative mortality effects on Salamandra larvae (salamanders)
|
|
39135
|
|
5423
|
Gambusia affinis
|
Predation/Herbivory
|
Observational
|
Field
|
Introduced fishes, including Gambusia affinis, are likely at least partially responsible for the decline of the Chiricahua leopard frog (Rana chiricahuensis) in southeastern Arizona
|
Arizona
|
12116
|
|
5424
|
Gambusia affinis
|
Predation/Herbivory
|
Observational
|
Field
|
In California, Gambusia affinis has been documented to prey heavily on California newt (Taricha torosa) larvae
|
California
|
14742
|
|
5425
|
Gambusia affinis
|
Predation/Herbivory
|
Observational
|
Field
|
In California, Gambusia affinis has been documented to prey heavily on Pacific treefrog (Hyla regilla) tadpoles
|
California
|
14761
|
|
5427
|
Gambusia affinis
|
Predation/Herbivory
|
Observational
|
Field
|
Gambusia affinis is also thought to contribute to the failed stocking of barrens topminnows (Fundulus julisia) and their long term population decline in Tennessee
|
Tennessee
|
39136
|
|
5428
|
Gambusia affinis
|
Predation/Herbivory
|
Observational
|
Field
|
Gambusia affinis is also responsible for the elimination of the least chub (Iotichthys phlegethontis) in several areas of Utah
|
Utah
|
1639
|
|
6932
|
Gambusia affinis
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Mosquitofish is known to prey on eggs, larvae, and juveniles of various fishes, including those of largemouth bass (Micropterus salmoides) and common carp (Cyprinus carpio); it is also known to prey on adults of smaller species.
|
|
593
|