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Aging White-tailed deer by tooth wear and replacement

Aging White-tailed deer by tooth wear and replacement. Number of points not correlated with age. Aging Characteristics. Physical Characteristics Antler Size. Body size and shape Neck Waist Back Behavior. Tooth wear and replacement- Harvested Deer. Aging Characteristics.

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Aging White-tailed deer by tooth wear and replacement

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  1. Aging White-tailed deer by tooth wear and replacement

  2. Number of points not correlated with age Aging Characteristics • Physical Characteristics • Antler Size

  3. Bodysize and shape Neck Waist Back Behavior Tooth wear and replacement- Harvested Deer Aging Characteristics

  4. Born in May and June Fall harvest 6 months- fawn 1.5 yrs- yearling 2.5 yrs 3.5 yrs 4.5 yrs 5.5 yrs 6.5 yrs Age Classes

  5. Tooth Wear The amount of visible dentine is an important factor in determining the age. Tooth wear on a farmland deer may not be as fast as that of a deep woods buck.

  6. The tooth wear and replacement method is not 100% accurate however, due to the differences in habitat.

  7. Severinghaus (1949) aging method • Focus on lower jaw bone • Adult deer • 3 premolars and 3 molars

  8. 6 Months • 4 teeth showing. • 3rd premolar has three cusps

  9. 1.5 yrs • 6 teeth • Third premolar • Third molar (last tooth) may still be erupting • Cusps of molars have sharp points. • .

  10. Inset:Extremely worn third premolar may fool people into • thinking deer is older. Actually, this tooth is lost after • 1-1/2; years and replaced with a permanent two-cusped • premolar

  11. 2.5 yrs • Teeth are permanent • On the first molar (4th tooth) the cusps are sharp • Enamel > dentine • Third cusp (back cusp) of sixth tooth (third molar) is sharp.

  12. 3.5 yrs • Cusps show some wear • Dentine now thicker than enamel on cusp of fourth • tooth (first molar). • Dentine of fifth tooth (second molar) usually • not as wide as enamel. • Back cusp is flattened.

  13. 4.5 yrs • Cusp of fourth tooth (first molar) is gone. • Cusps on fifth and sixth teeth (second • and third molar) are blunt. • Dentine of fourth tooth now twice as wide as enamel. • Dentine of fifth tooth wider than enamel.

  14. 5.5 yrs + • <2% or deer more than five years of age. • Accurately aging these deer by tooth wear is usually • more of a guessing game than a science. • ."

  15. In general, deer close to 5-1/2 years of age will show • considerable wear on the premolars, and the first cusp • of the fourth cheek tooth (first molar) will be dished • out or show signs of "cupping

  16. 9-1/2; Years: By 9-1/2; years, all cheek teeth are cupped and worn nearly to the gum line.

  17. 1.5 : Tooth 3- milk tooth with three cusps Tooth 6- not fully erupted • 2.5: Tooth 3- permanent 2 cusp Tooth 4- Enamel=Dentine Tooth 6- Back cusp is sharp and pointed

  18. 3.5: Tooth 4-Dentine>Enamel Tooth 6- back cusp worn flat

  19. 4.5: Tooth 4-Dentin 2x Enamel Tooth 6- Back cusp slopes downward 5.5: Tooth 4-Dentin 2x Enamel Tooth 5- Dentin 2x Enamel Tooth 6- Dentin > Enamel

  20. 6.5: Tooth 4- Dished out Tooth 5- Small enamel ridge in center Tooth 6- Small enamel ridge in center

  21. 7.5: Tooth 4- Worn Smooth Tooth 5- Worn Smooth Tooth 6- Small enamel ridge in center • 8.5: All teeth worn smooth

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