Specimen Information

Dreissena rostriformis bugensis
Dreissena rostriformis bugensis
(quagga mussel)
Mollusks-Bivalves
Exotic

Specimen ID1658406
GroupMollusks-Bivalves
GenusDreissena
Speciesrostriformis
Subspeciesbugensis
Common Namequagga mussel
StateCA
CountyLos Angeles
LocalityCastaic Lake, north of Los Angeles
Mapping AccuracyAccurate
HUC8 NameSanta Clara
HUC8 Number18070102
HUC10 NameCastaic Creek
HUC10 Number1807010203
HUC12 NameMiddle Castaic Creek
HUC12 Number180701020305
Map
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Collection Day6
Collection Month8
Collection Year2021
Year AccuracyActual
Potential Pathwaydispersed
Statusunknown
Reference 1
Ref. Number:36854
Author:California Department of Water Resources
Date:2021
CommentsOn August 6, 2021, a Castaic Lake park visitor reported finding one adult quagga mussel while kayaking in Castaic Lake (Los Angeles County). The specimen was confirmed as a quagga mussel by the California Department of Fish and Wildlife (CDFW) via genetic analysis. On August 17, 2021, Department of Water Resources and CDFW staff discovered a half shell (dead) quagga mussel and a full shell (dead) quagga mussel along the shoreline of Castaic Lake. On August 24, 2021, CDFW found a full shell (dead) quagga mussel attached to a rock along the shoreline.
Record TypeNAS sighting report
VerifierCalifornia Department of Water Resources
Freshwater/MarineFreshwater
Number Collected4
Photo




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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2021]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [9/20/2021].

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