. The Canadian field-naturalist. 1998 McKlNSTRY AND ANDERSON: SnARES TO LIVE-CaPTURE BEAVER 471 T3 0) Q. (C O 0) n (D E D C did not sex. males females 8 10 12 14 16 18 20 22 24 26 28 30 32 weight (kg) Figure 2. Frequency of Beaver captures per weight (kg) and sex categories. them while they were in the garbage can. Snares were removed from Beaver with a pair of cable cutters (M and M Fur Company, Bridgewater, South Dakota). We used a z test (Jandel Scientific 1994) to test proportional differences in captures of males versus females. Tests were considered significant at P< Results We c
. The Canadian field-naturalist. 1998 McKlNSTRY AND ANDERSON: SnARES TO LIVE-CaPTURE BEAVER 471 T3 0) Q. (C O 0) n (D E D C did not sex. males females 8 10 12 14 16 18 20 22 24 26 28 30 32 weight (kg) Figure 2. Frequency of Beaver captures per weight (kg) and sex categories. them while they were in the garbage can. Snares were removed from Beaver with a pair of cable cutters (M and M Fur Company, Bridgewater, South Dakota). We used a z test (Jandel Scientific 1994) to test proportional differences in captures of males versus females. Tests were considered significant at P< Results We captured a total of 132 Beaver in 1568 trap nights. Catch-per-unit-effort averaged trap nights/Beaver or (the probability of an indi- vidual trap's capture). Average weight of animals captured in snares was kg (range to 31 kg, SD = ) and there was no difference in propor- tion of males () or females () captured (z = , P = ) (Figure 2). Only five kits ( 7 days post-release. The other three Beaver were killed by predators (conclusions based upon bite marks, subcutaneous hemorrhaging, and hair and tracks found at the site) within four days of release. All Beaver that we captured actively fed while they were held in captivity (< 5 days) until release and appeared healthy at the time of release. Captured animals were usually located out of the water when the traps were checked. Often the vege- tation within the radius of the snare had been cut during the animal's attempts to extricate itself. Beaver were aggressive when we attempted to remove them from the snare and caution was needed to prevent being bitten. Generally, Beaver were snared around the chest or abdomen although several animals were snared at the base of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work
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