| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
8539
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
In Michigan, Largemouth bass virus (Ranavirus sp.) mortality events typically have involved 100-500 fish or 10 percent of the population per lake.
|
Lake Michigan, USA
|
16284
|
|
8540
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
However, Ranavirus sp. has also been implicated in several more significant largemouth bass die-offs within the Great Lakes basin, including in Lake George, Indiana—where largemouth bass virus (LMBV) was detected in 90% of fish sampled.
|
|
16284
|
|
8541
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
Prevalence of Ranavirus sp. in the state of Michigan was determined using 2000-2003 virus survey data. When detected (15 of 30 surveyed lakes), prevalence at the other lakes ranged from 6.3% (Lake Orion) to 100% (Lake St. Clair, Sanford Lake, Woodland Lake), with detection of the largemouth bass virus (LMBV) in close to or more than half of the largemouth bass sampled from many of these lakes.
|
Lake Michigan, USA
|
16295
|
|
8542
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
Levels of fish infection varied among sites and between sample years. For example, the virus was detected in Lake Orion at 6.3% prevalence in 2002 and then at 48% in 2003. In Woodland Lake, Ranavirus sp. was detected at 100% prevalence in 2002 and at 60% in 2003. The virus was also detected in Lake George at 90% prevalence in 2000 and 0% prevalence in 2002. This may suggest that the virus enters a water body, infects the population until a peak infection rate is observed, and then prevalence decreases.
|
Lake Michigan, USA
|
16295
|
|
8543
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Observational
|
Field
|
Other Great Lakes native species susceptible to infection by Ranavirus sp. include smallmouth bass (Micropterus dolomieui), bluegill (Lepomis macrochirus), crappie (Pomoxis spp.), and chain pickerel (Esox niger). However, mortality events attributed to largemouth bass virus (LMBV) are rare in these species.
|
United States
|
16280
|
|
8544
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Observational
|
Field
|
Ranavirus sp. was implicated in the die-off of largemouth bass in the northern Mississippi drainage reservoir.
|
|
16287
|
|
8545
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
Symptoms of largemouth bass virus (LMBV) can include lethargy, decreased responsiveness, swimming at the surface and/or in circles, and difficulty remaining upright.
|
|
16279
|
|
9651
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
In Steuben County, Indiana lake, largemouth bass virus (Ranavirus sp.) resulted in the death of 50 percent of the lake’s largemouth bass population.
|
Steuben County, Indiana lake, Indiana, USA
|
42781
|
|
9652
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
Ranavirus sp. was implicated in the die-off of over 1,000 largemouth bass in South Carolina.
|
|
42782
|
|
9653
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Observational
|
Field
|
Ranavirus sp. was implicated in the die-off of over 3,000 largemouth bass in a northern Mississippi drainage reservoi.
|
Mississippi River, USA
|
16287
|
|
9654
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
In 2010, Largemouth bass virus (LMBV)was detected in 40 percent of the largemouth bass in Kerr Reservoir and Buggs Lake, Virginia. Small die-offs also occurred in Briery Creek Lake and Sandy River Reservoir, Virginia. However, no significant impacts to the fisheries were realized.
|
|
42784
|
|
9655
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
Die-offs have also occurred in Alabama, Georgia, Louisiana, Mississippi, and Texas from largemouth bass virus.
|
USA
|
42782
|
|
9656
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
Since 1995, over 25 fish kills throughout the southeast and Midwestern U.S. have been linked to largemouth bass virus.
|
USA
|
42783
|
|
9657
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
Initial exposure to largemouth bass virus elicits antibody production, resulting in less severe disease manifestation in subsequent exposures.
|
|
16280
|
|
9658
|
Ranavirus micropterus1
|
Disease/Parasite/Toxicity
|
Anecdotal
|
N/A
|
in Florida, largemouth bass die-offs associated with largemouth bass virus (LMBV) have declined since first detection and no known die-offs have been observed since 2010.
|
Florida
|
42783
|