. The Canadian field-naturalist. 1985 Notes 387 Table 1. The abundance and habitat preference of 1552 Northern Red-back Voles captured on the Kenai National Wildlife Refuge from 1977-83. Numbers of Northern Red-backed Voles infected with Protospirura maris are in parenthenseses. 1977^ 1978'' 1979 1980 1981' 1982 1983 Total Mature Forest 153 247(3) 68 78 211 23 37(1) 817(4) 30-yr-old 86 159 45 0 18 0 0 308(0) Birch-Spruce 30-yr-old 32(5) 303(7) 43(1) 0 16(1) 0 0 394(14) Black Spruce Other 0 0 156(1) 156(1) 0 33(1) 278(2) 0 0 33(1) TOTAL 271(5) 709(10) 78(0) 23(0) 37(1) 1552(19) ^31 Meadow Voles
. The Canadian field-naturalist. 1985 Notes 387 Table 1. The abundance and habitat preference of 1552 Northern Red-back Voles captured on the Kenai National Wildlife Refuge from 1977-83. Numbers of Northern Red-backed Voles infected with Protospirura maris are in parenthenseses. 1977^ 1978'' 1979 1980 1981' 1982 1983 Total Mature Forest 153 247(3) 68 78 211 23 37(1) 817(4) 30-yr-old 86 159 45 0 18 0 0 308(0) Birch-Spruce 30-yr-old 32(5) 303(7) 43(1) 0 16(1) 0 0 394(14) Black Spruce Other 0 0 156(1) 156(1) 0 33(1) 278(2) 0 0 33(1) TOTAL 271(5) 709(10) 78(0) 23(0) 37(1) 1552(19) ^31 Meadow Voles (Microtuspennsylvanicus) and 3 Bog Lemmings (Synaptomys borealis) were also captured. 5 Meadow Voles were also captured. "1 Meadow Vole, 1 Bog Lemming, and 4 Microtus spp. also were Figure 1. Capturelocationsof Northern Red-backed Voles infected with Protospirura muris on the Kenai Penin- sula, Alaska. Location 1 - represents Willow Lake; 2 - Moose Research Center; 3 - Mystery Creek; 4 - Soldotna; 5 - Alpine meadow. and undisturbed areas in the same habitat type. This indicates that the prevalence of P. muris was related to factors other than canopy cover. The one infected NR Vole captured outside of the forested habitat was caught in a wet alpine meadow which suggests that the presence of P. muris may be related to relatively high soil mois- ture content. Since NR Voles were common in all habi- tats, the apparently limited distribution of P. muris was probably more dependent on the occurrence of a specific intermediate host than on the presence of rodents. The prevalence of P. muris was higher in adult NR Voles and in males. Fifteen of nineteen infected NR Voles were adults while adults comprised only of the cap- tured NR Voles. Infection rates for adult males were the highest for any sex and age group (), followed by infection rates of , , for adult females,. Please note that these images are extracted from scanned page images that may
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