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Full-Text Articles in Life Sciences

A Facial Congenital Anomaly In A Mature Male White-Tailed Deer (Odocoileus Virginianus), Travis Cunningham, Al Mead Feb 2022

A Facial Congenital Anomaly In A Mature Male White-Tailed Deer (Odocoileus Virginianus), Travis Cunningham, Al Mead

Georgia Journal of Science

Congenital anomalies are rarely documented in wild ungulates. This study describes a congenital facial malformation in a mature male white-tailed deer harvested in central Georgia in 2020. The skull displays a mediolateral deflection of the rostrum, and the mandibles display similar deflection with posterior rotation at the mandibular symphysis, a maxillofacial malformation commonly called wry face. Based on physical examination and radiographic imagery, there were no signs of neoplasia or healed bone trauma on the skull or jaws, suggesting a congenital origin for the deformity. Studies of domestic horses displaying wry face conclude that the malformation arises from fetal mispositioning …


Dental And Mandibular Anomalies In White-Tailed Deer (Odocoileus Virginianus) From Central Georgia, Patrick M. Powers, Alfred J. Mead Oct 2019

Dental And Mandibular Anomalies In White-Tailed Deer (Odocoileus Virginianus) From Central Georgia, Patrick M. Powers, Alfred J. Mead

Georgia Journal of Science

The frequency of dental and mandibular anomalies in free-ranging white-tailed deer in the southeastern United States is not well documented. Characteristic irregularities include supernumerary and missing teeth, malocclusion, root abscesses due to bacterial infections, and tooth or bone damage due to trauma. In the present study, we examined 778 white-tailed deer dentaries collected from the Piedmont National Wildlife Refuge in central Georgia. All dentaries were inspected for lesions, tooth irregularities, developmental anomalies, and other pathologies. Thirty-two dentaries (4.1%) displayed signs of dental or bone abnormalities. More abnormalities were associated with infection or injury (22/778, 2.8%) compared to unusual tooth development …


Correlation Of Sex, Age, And Body Mass With Hoof Size In White-Tailed Deer From The Piedmont Wildlife Refuge, Georgia, Ben Batchelor, Alfred J. Mead Jul 2017

Correlation Of Sex, Age, And Body Mass With Hoof Size In White-Tailed Deer From The Piedmont Wildlife Refuge, Georgia, Ben Batchelor, Alfred J. Mead

Georgia Journal of Science

The distal forelimbs and mandibles of 157 white-tailed deer (Odo­coileus virginianus) harvested during the 2001 fall hunting season on the Piedmont National Wildlife Refuge, Georgia, were used to explore the osteometric correlation of sex, age, and body mass with hoof size. The width of the right front, medial unguis and the linear distance from the tip of the dew-claw to the tip of the medial unguis were used as measures of hoof size. Linear regressions were calcu­lated for each osteometric parameter for each sex individually and for the sexes combined. Regression R2-values suggest that hoof width …


Enamel Hypoplasia As An Indicator Of Nutritional Stress In Juvenile White-Tailed Deer, Haley Davis, Alfred J. Mead Jun 2017

Enamel Hypoplasia As An Indicator Of Nutritional Stress In Juvenile White-Tailed Deer, Haley Davis, Alfred J. Mead

Georgia Journal of Science

Cheek teeth of 343 white-tailed deer mandibles collected from the Piedmont National Wildlife Refuge, central Georgia, were examined for the presence of enamel hypoplasia, a permanent enamel defect associated with episodes of severe physiological stress. Hypoplastic defects were observed in 27% of the individuals, with no significant difference between females (26%) and males (27%). Pit hypoplasia occurred most frequently, with most defects located on the hypoconid of the first lower molar. In white-tailed deer, the first lower molars form as fawns transition into functional ruminants and are weaned at the approximate age of 10 weeks. The presence of enamel hypoplasia …


Description Of A Pathologic White-Tailed Deer (Odocoileus Virginianus) Mandible From Central Georgia, Patrick M. Powers, Alfred J. Mead Jun 2017

Description Of A Pathologic White-Tailed Deer (Odocoileus Virginianus) Mandible From Central Georgia, Patrick M. Powers, Alfred J. Mead

Georgia Journal of Science

A pathologic mandible was observed in a male white-tailed deer (Odocoileus virginianus) harvested in central Georgia during the 2015 fall hunting season. The deer was approximately four and a half years of age and displayed no outward indication of injury or evidence of irregular tooth attrition at the time of death. Upon soft tissue removal, the mandible displayed signs of premortem trauma. The pathology was consistent with secondary bone deposition associated with bone breakage. The nature of the fracture suggests that it may have been caused by antler impact during male-to-male sparring. A physical examination of 621 white-tailed …


Body Mass Estimates From Bone And Tooth Measurements In White-Tailed Deer, Odocoileus Virginianus, Brandi Morris, Alfred J. Mead Nov 2016

Body Mass Estimates From Bone And Tooth Measurements In White-Tailed Deer, Odocoileus Virginianus, Brandi Morris, Alfred J. Mead

Georgia Journal of Science

The distal forelimbs and mandibles of 110 female and 240 male white-tailed deer (Odocoileus virginianus) from the Piedmont National Wildlife Refuge, Georgia, were used to examine the relationship between metacarpal dimensions, first lower molar occlusal surface area, and mandibular width versus body mass. The strongest correlation was found between female metacarpal proximal area vs. body mass (R2 = 0.74). The combined-sexes metacarpal proximal area vs. body mass displayed a lower correlation (R2 = 0.54). The female first lower molar surface area vs. body mass produced the highest dental correlation (R2 = 0.56). The study suggests that body mass estimates using …