| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
2724
|
Alosa aestivalis
|
Predation/Herbivory
|
Observational
|
Field
|
The introduction of blueback herring into Theo Reservoir in Briscoe County, Texas resulted in the
elimination of large-bodied zooplankton; the community shifted from cladoceran to copepod dominance
|
|
812
|
|
2792
|
Alosa aestivalis
|
Predation/Herbivory
|
Observational
|
Field
|
Blueback Herring in a South Carolina reservoir ate mostly zooplankton, including Bosmina sp. (13-78% of biomass), and Cyclapoid Copepods (12-78%). Blueback Herring diets differed significantly from diets of Threadfin Shad, which consumed proportionately more Bosmina sp. and rotifers; however, if food resources are limited there could be competition between these species.
|
|
14491
|
|
2796
|
Alosa aestivalis
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Native and stocked piscivores in the Great Lakes such as Atlantic Salmon, Lake Charr (Trout), and Oncorhynchus spp. prey upon Alewife and have the potential to also consume Blueback Herring.
|
|
14488
|
|
2797
|
Alosa aestivalis
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Blueback Herring in the Great Lakes have the potential to impact size-selection of zooplankton, predate upon eggs, larvae, and juveniles of important recreational, commercial, or conservation fishes, and cause thiamine deficiency in predatory salmonids.
|
|
14488
|
|
2800
|
Alosa aestivalis
|
Predation/Herbivory
|
Anecdotal
|
N/A
|
Blueback Herring are eaten by many freshwater sport fishes.
|
|
26640
|
|
2801
|
Alosa aestivalis
|
Predation/Herbivory
|
Observational
|
Field
|
In a South Carolina reservoir, Blueback Herring consumed some juvenile fishes (Clupeid and Centrarchid), but mainly selectively consumed larger zooplankton such as (Holopedium amazonicum, Mesocyclops edax, Bosmina longirostris, and Leptodora kindtii). Threadfin Shad diets were dominated by smaller zooplankton including Bosmina longirostris and Rotifera, with relatively little overlap with Blueback Herring.
|
|
24389
|
|
2803
|
Alosa aestivalis
|
Predation/Herbivory
|
Observational
|
Field
|
Selective feeding by Blueback herring on larger zooplankton appear to have restructured the zooplankton community in a South Carolina reservoir, as larger taxa have become less common and smaller taxa have become dominant.
|
|
24389
|
|
2804
|
Alosa aestivalis
|
Predation/Herbivory
|
Observational
|
Field
|
Introduction of Blueback Herring to Crystal Lake, CT, reduced modal size of zooplankton from 0.785 mm to 0.285 mm. Previously dominant large zooplankton taxa such as Diaptomus minutus, Daphnia catawba, and Diaphanosoma spp., were all but eliminated in favor of small zooplankton including Bosmina longirostris, Cyclops bicuspidatus, and Tropocyclops prasinus. Similar differences were found in lakes with and without landlocked Alewife.
|
|
33781
|
|
2805
|
Alosa aestivalis
|
Predation/Herbivory
|
Experimental
|
Field
|
Carcasses of Alosa aestivalis in an Atlantic coastal river were colonized by the fungus Saprolegnia sp. and decomposed at a rate of 0.015/hr with an estimated mean time to decomposition of 240 h. It was hypothesized that marine-derived nutrients from anadromous clupeid migrations may provide an important nutrient pulse to coastal rivers.
|
|
33782
|
|
2807
|
Alosa aestivalis
|
Predation/Herbivory
|
Observational
|
Field
|
Adult Alabama Bass (Micropterus henshalli), Largemouth Bass (Mi. salmoides), and Striped Bass (Morone saxatilis) were significantly heavier after the establishment of Blueback Herring in Lewis Smith Lake, AL, than they were prior to the introduction.
|
|
33786
|