Book Description

Records of Lake Huron drainage Black Redhorse from the lower reaches of the Maitland River, Saugeen River, Bayfield River, Ausable River, Gully Creek and Sauble River, suggest that inter-lake movement between rivers may occur and thus provides insight into potential rescue from populations in the United States, should the Black Redhorse become extirpated in Canada. [...] This has resulted in a decrease in the extent of occurrence (EO) and the index of area of occupancy (IAO). [...] The Black Redhorse differs from the other six Canadian redhorse species in the following ways: Black Redhorse has a slate-grey tail, whereas a red tail is present in the following Redhorse species - River Redhorse (M. [...] Special Significance Canadian populations of the Black Redhorse are at the northern limit of their global distribution, and are sparse compared to populations in the United States. [...] It is found from Alabama and Mississippi in the south, to Ontario and Michigan in the north, and from New York in the east, to Oklahoma and Minnesota in the west.