Aquatic Invertebrates - invasive

Asian Clam (Corbicula fluminea) on May 17, 2021

Submitter does not have a specimen

Description of specimen

A tiny bivalve less than 1/2” in size; semi translucent.

Commentary

Hello and thank you for your report! I can't entirely tell if this is an Asian clam, but they are known to occur in the area. This is an ODFW prohibited species, meaning it cannot be imported, sold or transported in the state though they seem to be spreading on their own and are found in many waterways in western Oregon. Your report helps us keep our understanding of distribution and presence up to date.
Many thanks,
Lindsey

Lindsey Wise
Aug. 11, 2021, 3:11 a.m.

Remedy

Asian Clam is an Oregon Dept. of Fish and Wildlife Prohibited Species, and "may not be imported, possessed, sold, purchased, exchanged or transported in the state".

Resources

Learn more about Asian Clam on iNaturalist

Location

A seasonal creek flows into a small pond on my land (24137 Warthen Road, Elmira, OR. The unnamed mini creek is in an area between Long Tom River and Parker Creek. This all eventually flows into Fern Ridge Reservoir I believe. The pond is currently quite low so I’ve used the opportunity to remove some of the dead leaves and organic material that have built up. While raking out material I discovered a tiny bivalve.

Expert Reviewer

Mrs. Lindsey Wise
Oregon Biodiversity Information Center, inr.oregonstate.edu/orbic
Oregon iMapInvasives
Institute for Natural Resources
Portland State University

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