| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
2527
|
Hypophthalmichthys nobilis
|
Competition
|
Observational
|
Field
|
Study results may suggest that Asian carps are influencing native planktivore body condition. Gizzard Shad and Bigmouth Buffalo body condition declined significantly with increases in commercial harvest of Asian carps (linked to density and biomass).
|
|
17189
|
|
2528
|
Hypophthalmichthys nobilis
|
Competition
|
Observational
|
Field
|
Dietary overlap was present among both bigheaded carp species, Gizzard Shad, and Bigmouth Buffalo in the Illinois and Mississippi rivers. Although there was little evidence that bighead and silver carp were reducing zooplankton abundance, results did not rule out the possibility that these species could limit food resources for native fishes as the populations of bigheaded carp continue to increase in the Illinois and Mississippi rivers.
|
|
18463
|
|
2571
|
Hypophthalmichthys nobilis
|
Competition
|
Anecdotal
|
N/A
|
Bighead Carp competes with other planktivorous fishes and fish larvae for food.
|
|
16474
|
|
2637
|
Hypophthalmichthys nobilis
|
Competition
|
Experimental
|
Laboratory
|
Paddlefish (Polyodon spathula) showed a significant reduction in relative growth in the presence of Bighead Carp (Hypophthalmichthys nobilis), suggesting that Bighead Carp is a stronger competitor when zooplankton are limited.
|
Columbia, Missouri
|
14138
|
|
4074
|
Hypophthalmichthys nobilis
|
Competition
|
Observational
|
Field
|
Gizzard Shad body condition and catch per unit effort decreased after the introduction Bighead Carp and Silver Carp, and increased following implementation of contractual harvest as a management and control method, suggesting higher availability of a shared forage resource (zooplankton)
|
|
35727
|
|
4078
|
Hypophthalmichthys nobilis
|
Competition
|
Experimental
|
Laboratory
|
Presence of juvenile Bighead Carp reduced growth rates of larval Bluegill (Lepomis macrochirus) by 58-87%. Reduction in growth rate was estimated to delay ontogenetic shift from pelagic to littoral habitats by 9-24 days.
|
|
32552
|
|
5833
|
Hypophthalmichthys nobilis
|
Competition
|
Observational
|
Field
|
Stable isotope analysis indicated that bighead carp, Hypophthalmichthys nobilis, diet overlapped with bighead carp (93.6%), gizzard shad (91.3%), and paddlefish (26.8%). This trophic overlap could threaten fish biodiversity.
|
Missouri River, Missouri
|
40452
|
|
5921
|
Hypophthalmichthys nobilis
|
Competition
|
Observational
|
Field
|
According to stable isotope analysis, bighead carp (Hypophthalmichthis nobilis) had overlapping trophic niches with other fish species in the Missouri River. Its highest overlap was with bigmouth buffalo (94.1%) and its lowest was with American paddlefish (26.8%). Overall, bighead carps trophic overlap with native species was 64% on average. This competition could have negative effects on native fish species.
|
Missouri River, USA
|
40680
|
|
5942
|
Hypophthalmichthys nobilis
|
Competition
|
Experimental
|
Laboratory
|
In response surface experiments, daily growth rates of bluegills were reduced in high bighead carp (Hypophthalmichthys nobilis). Reductions in growth rates were likely a result of competition for phytoplankton.
|
Kinmundy, Illinois, USA
|
40660
|
|
5978
|
Hypophthalmichthys nobilis
|
Competition
|
Experimental
|
Field
|
In a manipulative experiment, native golden shiner production was lower in the pond with the bighead carp (Hypopthalmichthys nobilis).
|
Kinmundy, Illinois, USA
|
40598
|
|
5992
|
Hypophthalmichthys nobilis
|
Competition
|
Experimental
|
Laboratory
|
In mesocosm and pond experiments, larval bluegill growth rates were lowest when bighead carp (Hypophthalmichthys nobilis were present.
|
Kinmundy, Illinois, USA
|
40207
|
|
6046
|
Hypophthalmichthys nobilis
|
Competition
|
Experimental
|
Field
|
In pond experiments with bighead carp (Hypophthalmichthys nobilis), common carp production dropped significantly. This was attributed to competition and dietary overlap in these two species.
|
Zabieniec, Poland
|
15351
|