. The Canadian field-naturalist. Natural history; Sciences naturelles. 2006 AlMMS, KALLliMKYN, AND WlLLIS: LaKE STURGEON MOVf-MENTS 79 2~ -~: i* ;!/'-^ 4 Kilometen. Figure 6. Distribution of locations for Lake Sturgeon number 21 in Rainy Lake, 2003 and 2004. extended peiiods. For example, fish 15 was tagged at the Squirrel Falls Dam on 28 May 2003 and was next located in the Brule Narrows area (Figure 7). Subse- quent locations were all in the area of the Brule Nar- rows until 26 August 2003. The next locations were in the Squirrel Falls Dam area beginning on 28 Sep- tember 2003. The fish was
. The Canadian field-naturalist. Natural history; Sciences naturelles. 2006 AlMMS, KALLliMKYN, AND WlLLIS: LaKE STURGEON MOVf-MENTS 79 2~ -~: i* ;!/'-^ 4 Kilometen. Figure 6. Distribution of locations for Lake Sturgeon number 21 in Rainy Lake, 2003 and 2004. extended peiiods. For example, fish 15 was tagged at the Squirrel Falls Dam on 28 May 2003 and was next located in the Brule Narrows area (Figure 7). Subse- quent locations were all in the area of the Brule Nar- rows until 26 August 2003. The next locations were in the Squirrel Falls Dam area beginning on 28 Sep- tember 2003. The fish was then located in the Squirrel Falls Dam area on 18 May 2004 and was not located in the Brule Narrows area until 30 June 2004. Lake Sturgeon home ranges Home ranges for Lake Sturgeon in Rainy Lake var- ied substantially, with a maximum home range size of 14 844 ha, a minimum size (excluding fish 106, pos- sible mortality) of 84 ha, and a mean home range size of 4 625 ha (standard error = 642). Lyons and Kemp- inger (1992*) reported that most Lake Sturgeon in the Lake Winnebago system had consistent movement pat- terns, while others demonstrated variable movement patterns and apparently did not establish home ranges. They also found that Lake Sturgeon in Lake Win- nebago did not remain in any particular location for long periods of time. Conclusions This research should provide biologists from mul- tiple agencies insight into general movement patterns of Lake Sturgeon inhabiting Rainy Lake. Telemetn. data indicated high utilization of the Squirrel Falls area, with 37% of total locations occurring at that area. Squirrel Falls was the only site at which spawning was confirmed by collection of Lake Sturgeon eggs, although other aggregations in areas associated with Kettle Falls, the Pipestone River, and the Rat River also could indicate spawning activity. Movement of Lake Sturgeon between the Seine River and the South Arm of Rainy Lake indicates the likelihood of one integrated popul
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