Invasion
Invasion Description
1st Record: Blount Island/FL/St. Johns River (1986, Lee 2008). In 1986, a heavy infestation of Mytella strigata clogged the intakes of the Blount Island electrical generating plant. The mussels disappeared in the winter of 1987, and did not reappear in the St. Johns estuary until 2006 (Lee 2008). In 2006 and 2007 they were found in small numbers, but in 2008, they again clogged the Blount Island Power plant (Lee 2008).
Geographic Extent
Blount Island/FL/St. Johns River (1986, Lee 2001); floating dock, Mayport/FL (2006, Lee 2007 Mayport Naval Station Beach at periphery of Hanna Park, Duval County, Florida/St. Johns River estuary (1/22/2007 (Lee 2007 http://www.jaxshells.org/bivaa.html); Sister’s Creek Marina, Jacksonville/FL/St. Johns River Estuary (2007, Gilg et al. 2010); Lion's Club Marina, Jacksonville/FL/St. Johns River Estuary (2007, Stenyakina et al. 2010); Mayport/FL/Sisters Creek (2007, Gilg et al. 2007); Alimacani Park to Reddie Point Preserve, Jacskonville Area/FL/St. Johns River estuary (Holt and Garner 2018. 33-13 PSU mean salinity, to 30°25'16.05"N, 81°25'15.49"W30°23'24.96"N, 81°37'09.16"W)
Vectors
| Level | Vector |
|---|---|
| Alternate | Ballast Water |
| Alternate | Hull Fouling |
Regional Impacts
| Economic Impact | Industry | |
| In 1986, a heavy infestation of Mytella strigata clogged the intakes of the Blount Island electrical generating plant. The mussels disappeared in the winter of 1987, and did not reappear in the St. Johns estuary until 2006 (Lee 2008). In 2006 and 2007, they were found in small numbers, but in 2008, they again clogged the Blount Island Power plant (Lee 2008). | ||