. The Canadian field-naturalist. 96 The Canadian Field-Naturalist Vol. 91 A Recent Record of the Meadow Jumping Mouse, Zapus hudsonius, in the Northwest Territories Richard J. Douglass' and Andrew E. L. McNaughton^ 'Renewable Resources Consulting Services Ltd., 11440 Kingsway Avenue, Edmonton, Alberta T5G 0X4 ^Museum of Zoology, Department of Biology, Carleton University, Ottawa, Ontario KIS 5B6 A meadow jumping mouse was captured on 12 August 1975 during field studies in the Northwest Territories. The single specimen (skin and skull) was identified as Zapus hudsonius by C. G. van Zyll de Jong
. The Canadian field-naturalist. 96 The Canadian Field-Naturalist Vol. 91 A Recent Record of the Meadow Jumping Mouse, Zapus hudsonius, in the Northwest Territories Richard J. Douglass' and Andrew E. L. McNaughton^ 'Renewable Resources Consulting Services Ltd., 11440 Kingsway Avenue, Edmonton, Alberta T5G 0X4 ^Museum of Zoology, Department of Biology, Carleton University, Ottawa, Ontario KIS 5B6 A meadow jumping mouse was captured on 12 August 1975 during field studies in the Northwest Territories. The single specimen (skin and skull) was identified as Zapus hudsonius by C. G. van Zyll de Jong, and deposited in the National Museum of Natural Sciences, Ottawa, as NMC 42852. The animal was collected on the edge of a small thermokarst lake near the northwest end of Chick Lake (65° 53' N, 128° 12' W; Figure 1), 90 km north- west of Norman Wells, Northwest Territories. Hall and Kelson (1959) and Banfield (1974) considered the northern limit for the jumping mouse in the North- west Territories to be south of Great Slave Lake and the Mackenzie River. Krapu and Traugher (1972) recorded a specimen near the north shore of Great Slave Lake, 40 km northwest of Yellowknife. (The latitude was incorrectly published as 66°33'N. The correct latitude for their specimen is 62°33' N; Krapu, 1976, personal communication.) The Chick Lake capture extends the known range approximately 360 km. The vegetation at the present capture site consisted primarily of sedges (Corex spp.) and grasses (Cfl/oma- grostis spp.), with clumps of willow {Salix spp.). The forest surrounding the lake was dominated by black spruce (Picea mariana) with some white spruce {P. glauca) and larch {Larix lahcina) intermixed. A relatively high degree of thermokarst erosion adjacent to this small lake was the only apparent feature that distinguished it from others in the area. The one meadow jumping mouse taken represented less than of the total captures in 95 800 trap- nights expended at Chick Lake during th
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