Variability in mandible marrow fat in 3 moose populations in Sweden.

摘要: The usefulness of mandible marrow fat as an indicator deposition was analyzed to compare 3 moose (Alces alces) populations (Furudal, Hagfors, and Grimsi) in southcentral Sweden. Marrow levels were related autumn winter season, age, carcass weight 978 collected during 1981-84. Within each population no between year difference for specific sex age classes found. Average low among calves (53-62%) but increased rapidly yearlings (68-73%). Adult females had high throughout life (76-78%), whereas males substantially less with increasing (38% at -10 years). Grims6 consistently (P < 0.05) than those Furudal Hagfors. overall relationship differed the sexes resembled typical fat-age relationship. positively correlated not adults. During October-December male adult stable levels, female tended mobilize build up fat. J. WILDL. MANAGE. 50(4):719-726 Bone has been used widely physiological status ungulates (Cheatum 1949, Riney 1955, Ransom 1965, Greer 1968, Neiland 1970, Verme Holland 1973, Ratcliffe 1980). Development Neiland's (1970) dry-weight method estimating percentage allowed quantification relatively little effort cost. Its simplicity objectivity led Hunt (1979) recommend this determination wildlife studies. Using method, Snider (1980) Ballard et al. (1981) found positive correlations femur, metatarsus, mandibles from 2 North American populations. Mandibles can be routinely a large number hunting suggested that mandibular could individual condition. They also recommended paired samples different longbones other should test general technique. To date primarily broad judgments whether animal is good or poor However, due relative it may useful tool studies level. Comparisons must then take into account animals (Franzmann Arneson 1976, 1980, 1981) well seasonal changes mobilization Bjarghov 1977, Fong 1981, Huot 1982). No data comparing cervid populations, simultaneous consideration above-mentioned factors, appear have published. objectives our study determine relationships ageand weight-related mandible, femur We thank A. N. Pehrson valuable criticism manuscript, all hunters collection material, P. G. Ahlqvist L. B. Pettersson field laboratory assistance. advice practical help Norling on statistical analyses appreciated. This financially supported by Natl. Swedish Environ. Prot. Board