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Distribution of Fishes in the Red River of the North Basin on Multivariate Environmental Gradients

Petromyzontidae

Chestnut Lamprey

Ichthyomyzon castaneus Girard, the chestnut lamprey, was listed as Ammocoetes branchialis by Woolman (1896), who collected it from the Sheyenne River at Lisbon and the Red Lake River at Grand Forks and Crookston (Figure A1). Records of UMMZ (1994) included the collection by Woolman (1896) at Grand Forks. Oftedal collected it from the Red River in 1908 (SI 1994) and Young collected it in 1912 (Hankinson 1928). The chestnut lamprey has been collected from the Red, Otter Tail, Red Lake, Clearwater, and Roseau Rivers and the Wild Rice River in Minnesota and has occurred at 24% of the sites in the NMW ecoregion (Table 4). A single specimen was collected in the Goose River in 1994 by MDNR ECO (1994), which represents the only verified collection of a chestnut lamprey from any western basin tributary since the report from Lisbon by Woolman (1896).

Figure A1. Distribution of the chestnut lamprey in streams of the Red River of the North basin.

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