| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
4931
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
While uncommon, Flathead Catfish have been recorded to prey on Pallid Sturgeon (Scaphirhynchus albus)
|
Missouri
|
37309
|
|
4932
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
Predatory impacts of Flathead Catfish could have significant per capita effects on native populations of American Shad (Alosa sapidissima), Blueback Herring (A. aestivalis), and Alewife (A. pseudoharengus) in subestuaries of Chesapeake Bay, Virginia
|
Chesapeake Bay, Virginia
|
37308
|
|
4933
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
Intensive predation by Flathead Catfish and Channel Catfish (Ictalurus punctatus) on juvenile Razorback Suckers is likely to prevent hatchery transplants of this southwestern endangered Sucker from becoming re-established in portions of its natural range.
|
San Pedro River
|
25136
|
|
4934
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
A severe decline in native fish species, particularly native Bullhead species, was observed in the Cape Fear River within 15 years of the first Flathead Catfish introduction
|
Cape Fear River
|
706
|
|
4935
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
Many feeding studies have found that Flathead Catfish prey heavily on Sunfish Lepomis spp.
|
Flint River, Georgia
|
1725
|
|
4936
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
Many feeding studies have found that Flathead Catfish prey heavily on Sunfish Lepomis spp.
|
Lake Mitchell, South Dakota
|
30232
|
|
4937
|
Pylodictis olivaris
|
Predation/Herbivory
|
Experimental
|
Laboratory
|
In the upper Gila River, New Mexico, Flathead Catfish had high consumptive demand on native fishes and sometimes exceeded native fish productivity rates
|
Gila River, New Mexico
|
28519
|
|
9839
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
A study in a Minnesota Lake found that Flathead Catfish reduced the number of Common Carp Cyprinus carpio and bullheads Ameiurus spp.
|
Minnesota, USA
|
30296
|
|
9840
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
The introduced population of Flathead Catfish in the Flint River system was found to prey largely on crayfish, and young-of-the-year flatheads fed on darters Etheostoma spp., herrings (Clupeidae), suckers (Catostomidae), catfishes (Ictaluridae, including other flatheads), and sunfishes (Centrarchidae) were also consumed
|
|
1725
|
|
9841
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
Feeding studies conducted in the Cape Fear River showed that Flathead Catfish consume mainly Bullheads Ameiurus spp., and other catfishes (Ictaluridae), Shad (Clupeidae), and Sunfishes (Centrarchidae)
|
North Carolina
|
1491
|
|
9842
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
In 1979, Flathead Catfish in the Cape Fear River fed primarily on Bullheads Ameiurus spp. However, by 1986, Bullhead populations had declined and Flathead Catfish had switched to preying on Shad (Clupeidae).
|
North Carolina
|
1340
|
|
9843
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
Flathead Catfish, along with other nonnative piscivorous fishes, have been shown to reduce the abundance and diversity of native prey species in several Pacific Northwest rivers.
|
Pacific Northwest
|
24498
|
|
9844
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
In the Ocmulgee River, Georgia, abundances of Silver Redhorse (Moxostoma anisurum), Robust Redhorse (M. robustum), Snail Bullhead (Ameiurus brunneus), Flat Bullhead (A. platycephalus), and Redbreast Sunfish (Lepomis auritus), were negatively correlated with Flathead Catfish occurrence and abundance.
|
Georgia, USA
|
833
|
|
9851
|
Pylodictis olivaris
|
Predation/Herbivory
|
Observational
|
Field
|
In the Susquehanna River, Flathead Catfish consumed fishes of economic and ecological importance, including Smallmouth Bass (Micropterus dolomieu) and Channel Catfish ( Ictalurus punctatus).
|
|
43433
|