. The Canadian field-naturalist. 584 The Canadian Field-Naturalist Vol. 104 Table 1. Mean length (range) of dentary bone (mm), pedicle diameter (mm) and antler length (cm) of Caribou from southeastern British Columbia and northern Idaho. Age Dentary Pedicle Antler Sex (yrs) Length Diameter Length F >2 (255-291) (21-28) () N = 7 N = 6 N = 6 M >2 (188-311) (34^0) () N = 9 N = 5 N = 7 M 1 (245-265) (18-23) () N = 3 N = 3 N = 3 (Parker's study was limited to females.) The rate of dentary growth in our sample was similar to that
. The Canadian field-naturalist. 584 The Canadian Field-Naturalist Vol. 104 Table 1. Mean length (range) of dentary bone (mm), pedicle diameter (mm) and antler length (cm) of Caribou from southeastern British Columbia and northern Idaho. Age Dentary Pedicle Antler Sex (yrs) Length Diameter Length F >2 (255-291) (21-28) () N = 7 N = 6 N = 6 M >2 (188-311) (34^0) () N = 9 N = 5 N = 7 M 1 (245-265) (18-23) () N = 3 N = 3 N = 3 (Parker's study was limited to females.) The rate of dentary growth in our sample was similar to that of the Newfoundland population and accelerated in comparison with that of Kaminuriak Caribou. Dentary growth of yearling males (mean 254 mm. Table 1) for example was as great as that of Kaminuriak males 2years of age(Miller 1974, p. 31). Because illegal hunting is primarily directed against larger males of the Selkirk population (Johnson 1985), few males now reach full maturity. We note for example antler lengths of specimens collected before 1900 sometimes exceeded 75 cm (79 cm. Boundary County Museum and 89 cm, D. Boswell collection). The longest antler lengths of males recovered in recent years are shorter ( cm. University of Idaho and 75 cm, D. Freddy Collection).. I. Cranial and antler characteristics lor caribou evaluated. A = dentary length, B = pedicle diame- ter, and C - antler length. Acknowledgments D. Boswell, D. J. Freddy, J. M. Peek and W. O. Volovsek provided skull measurements or access to specimens. We thank Ole Johansen for assistance with the Norwegian literature. Literature Cited Bergerud, A. T. 1964. Relationship of mandible length to sex in Newfoundland caribou. Journal of Wildlife Management 28: 54-56. Bergerud, A. T. 1970. Eruption of permanent premolars and molars for Newfoundland caribou. Journal of Wildlife Management 34: 962-963. Fuller, T. K., and L. B. Keith. 1980. Physical characteris- tics of woodland caribou in northeastern Alberta.
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