Least Brook Lamprey Lampetra aepyptera (C. C. Abbott, 1860)  

Status:

Least Brook Lampreys spawn in the spring. After hatching, the ammocetes spend about three years in the stream bottom eating organic matter and microscopic inverts. They will transform into non-feeding adults in the summer/fall, spawn in the spring, and then expire. (R. Aguilar, pers. comm.)

Relationships:

Unlike its more famous cousin the Sea Lamprey, this species is not parasitic on fish but feeds as a youngster by filtering out micro-organisms in the water. The adults do not feed. (R. Orr, pers. comm.)

There are 30 records in the project database.

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An adult Least Brook Lamprey found in Charles Co., Maryland (3/31/2009). Photo by Richard Orr. (MBP list)

Least Brook Lampreys in Anne Arundel Co., Maryland (4/10/2014). Photo by Frode Jacobsen. (MBP list)

A Least Brook Lamprey in Howard Co., Maryland (4/1/2017). Determined by Jay Kilian. Photo by Sue Muller. (MBP list)


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