Age Determination in Moose from Sectioned Incisor Teeth

Sergeant, David; Pimlott, Douglas H.

doi:10.2307/3796891

Cited by 140 publications

(63 citation statements)

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“…Blood samples were also taken, and serum progesterone levels (P4) as well as pregnancy specific protein B (PSPB) were analysed (Wood et al, 1986) to confirm the results of rectal palpation. An incisor tooth was obtained from each moose and we later determined their ages by counting cementum annuli (Sargeant and Pimlott, 1959). A radio-collar (151 mHz, Telonics, Mesa, Arizona; Lotek Engineering, Aurora, Ontario; Telemetry Systems, Mequon, Wisconsin) was attached to each animal.…”

Section: Study Area and Methodsmentioning

confidence: 99%

Productivity, Survival, and Movements of Female Moose in a Low-density Population, Northwest Territories, Canada

Stenhouse¹,

Latour²,

Kutny³

et al. 1995

ARCTIC

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ABSTRACT. Moose (Alces alces andersoni) occur at low density (140 -160 moose/1000 km 2 ) and are the most important game animal in much of the Mackenzie Valley, western Northwest Territories. Productivity and survival of 30 female moose (≥ 1.5 yr.) were studied from November 1985 through November 1988. Twenty-nine of these moose were radio-tracked for a total of 1039 relocations. Pregnancy rates were 96% for adult and 40% for yearling females. Most females returned to the same restricted area to calve each year. Mean newborn calf:female ratio and twinning rates were 1.2:1 and 31%, respectively. Mean annual female survival rate was 85%. Annual calf survival was high and stable (44 + 0.02%). Individual total home range size varied from 40 km 2 to 942 km 2 . Mean home range size for 29 moose was 174 ± 31 km 2 and 202 ± 59 km 2 for the 14 moose radio-tracked the entire three years of study. Fall home ranges were twice the size of winter and summer home ranges; seasonal ranges overlapped widely, indicating that these moose were non-migratory.

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Section: Study Area and Methodsmentioning

confidence: 99%

Productivity, Survival, and Movements of Female Moose in a Low-density Population, Northwest Territories, Canada

Stenhouse¹,

Latour²,

Kutny³

et al. 1995

ARCTIC

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show abstract

“…Using teeth for age determination is commonly reported in many species of deer [23,25,26,33,34,36]. This method is based on eruption sequence, wearing estimation and cementum lines [28].…”

Section: Methodsmentioning

confidence: 99%

Skull Growth of the Korean Water Deer, <i>Hydropotes inermis argyropus</i>

Kim

Suzuki

et al. 2013

The Journal of Veterinary Medical Science

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ABSTRACT. Craniomandibular traits of the water deer from the Korean peninsula were examined to assess size change in growth between age groups and sexes. Univariate and multivariate analyses were conducted based on 34 cranial and 11 mandibular measurements from both sexes. Statistical comparisons of skull measurements revealed a significantly different growth pattern between the sexes. For the male, the size change of the cranium and mandible was straight through age groups, constantly. On the other hand, the size of the cranium and mandible of the female was changed relatively steeper than that of the male in age groups 2 to 3, and the growth curves from age group 3 to 4 were more gradual than age groups 2 to 3. Principal component analysis showed that these 2 sexes have a similar trend. In the allometry analysis, there were differences in growth in 5 traits in both sexes. In conclusion, our study suggests that the male and the female Korean water deer had a similar trend for their growth, although there was a small difference of skull growth for age groups.

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“…Altogether, 179 agedefined individuals, 93 males (mean age = 4.7 years) and 86 females (mean age = 7.0 years), with intact mandibles and fully developed incisors and molars were selected for the morphometric analyses. The age determination was performed in Matson's Laboratory (Montana, USA) from the root of the first or the second incisor according to the method of Sergeant and Pimlott (1959). The younger age of male moose in the data reflects the actual age structure of the Finnish moose population, where the sexually selective harvesting has caused the mean ages of males and females to diverge (Nygrén 2009).…”

Section: Datamentioning

confidence: 99%

Geographic Cline in the Shape of the Moose Mandible: Indications of an Adaptive Trend

et al. 2016

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Intra-specific geographic variation is probably one of the most common patterns studied in ungulate morphology.However, the shape of the mandible, a crucial feature with regard to feeding, has been greatly understudied in this context. Here, we utilized a museum collection of moose (Alces alces) mandibles to investigate whether we could detect significant variation in this species, and test for the existence of geographic patterns and associations with population genetic structure. We applied a landmark-based geometric morphometrics approach, analyzing shape data with principal component analysis and linear mixed models. A significant geographic shift in the shape of the moose mandible was revealed. The main pattern was similar in both sexes; however, there was a consistent difference in shape between males and females over the latitudinal scale. The main changes included an enlargement in the attachment surfaces of the muscles controlling biting and mastication, suggesting more effective mastication towards the north, plausibly as an adaptive response to a harder and tougher wintertime diet. Additionally, more subtle, yet statistically significant agerelated shape variation was discovered. Interestingly, no or only a weak association between the morphometric variation and the genetic population structure was detected with neutral molecular markers.

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Age Determination in Moose from Sectioned Incisor Teeth

Cited by 140 publications

References 0 publications

Productivity, Survival, and Movements of Female Moose in a Low-density Population, Northwest Territories, Canada

Productivity, Survival, and Movements of Female Moose in a Low-density Population, Northwest Territories, Canada

Skull Growth of the Korean Water Deer, <i>Hydropotes inermis argyropus</i>

Geographic Cline in the Shape of the Moose Mandible: Indications of an Adaptive Trend

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