Species Regional Summary
Upogebia major
Northern California to Mid Channel Islands ( NEP-V )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st Records: ;San Leandro Bay, San Leandro flats, CDFW station 103 (2009 record, Chapman et al. 2021); San Mateo/CA/South San Francisco Bay (Chapman et al. 2021)

Geographic Extent

CA/Bodega Harbor (2016, Chapman et al. 2021); CA/Tomales Bay (2019, Chapman et al. 2021); CA/Tomales Bay (2019, Chapman et al. 2021); CA/Drakes Estero (2014, Chapman et al. 2021); CA/Bolinas Lagoon (2020, Chapman et al. 2021)[ Bullhead Flat at China Camp/CA/San Pablo Bay (Chapman et a. 2021); McNears Beach/CA/CA/San Pablo Bay (Chapman et a. 2021); San Leandro Bay, San Leandro flats, CDFW station 103 (2009 record, Chapman et al. 2021)]; CA/San Pablo Baty(6/10/2010, 10 m depth, collected by dredge 'Essayons' (Chapman et al. 2021); Point San Quentin/CA/Central San Francisco Bay (Chapman 2021)'; ; Oakland/CA/Oakland Inner Harbor (Chapman et al. 2021); CA/Elkhorn Slough (2020, Chapman et al. 2021)

Vectors

Level Vector
Alternate Ballast Water
Alternate Fisheries Intentional

Regional Impacts

Ecological ImpactParasite/Predator Vector
Upogebia major is a possible host vector for the introduction of the parasitic isopod Othione griffenis to San Francisco Bay (Chapman et al. 2021).
 
Ecological ImpactCompetition
Upogebia major is a potential competitor with the native U. pugettensis and U. macgintieorum. Howver, the idfferential impact of the castrating parasite Oirthione griffenis means that the two species probably rarely co-occur Chapman et al. 2021).
 
Ecological ImpactHabitat Change
Upogebia major is a potential competitor with the native U. pugettensis and U. macgintieorum. Howver, the idfferential impact of the castrating parasite Oirthione griffenis means that the two species probably rarely co-occur Chapman et al. 2021).
 

References

Full Reference List for Upogebia major

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