Parodontal bedingte Veränderungen amProcessus alveolaris beim Rotwild

Geiger, G.; Thomé, Helder Esteves; Kühl, Adriana Masiero

doi:10.1007/bf02286500

Cited by 1 publication

(3 citation statements)

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“…Mandibles of .41,000 Norwegian red deer (Cervus elaphus) showed a low frequency of innate problems that increased with age, most commonly as missing teeth, but no other changes were reported (Loe et al, 2006). In contrast, for red deer from central Germany, periodontal disease was common (Geiger et al, 1992). The prevalence of lesions in 267 skulls increased from 11% in 1-2 yr olds to 96% in 13+ yr old deer.…”

Section: Discussionmentioning

confidence: 99%

“…Only the 13+ yr age class also had mandibles affected (27% prevalence), always accompanied with maxillary disease. Thus, only 2.7% of 698 mandibles were affected (Geiger et al, 1992). The clearly age-dependent periodontitis in mandibles was interpreted to result from the reduced size of worn molars in older animals, leading to a higher chance for food impaction, and therefore infections.…”

Section: Discussionmentioning

confidence: 99%

“…Lumpy jaw has included descriptions of paradontal disease involving only maxillary bones (in deer less than 12 yr old; Geiger et al, 1992), only mandibles (LeaderWilliams, 1980(LeaderWilliams, , 1982Hoefs and Bunch, 2001), or both (in deer .13 yr old; Geiger et al, 1992; this study). Conditions resulting in lumpy jaws without postcranial bone lesions include infection with the arterial nematode Elaeophora schneideri, which can cause partial paralysis of jaw muscles, resulting in food impaction and concomitant jaw disease, including tooth loss and fractured jaws (Davidson and Nettles, 1988).…”

Section: Discussionmentioning

confidence: 99%

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Age-Independent Osteopathology in Skeletons of a South American Cervid, the Patagonian Huemul (Hippocamelus Bisulcus)

Flueck¹,

Smith-Flueck²

2008

Journal of Wildlife Diseases

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The huemul (Hippocamelus bisulcus), an endemic Patagonian deer, has been endangered for decades. Although conservation in Argentina has been directed at the 350-600 remaining huemul, the population has not recovered. In initial studies on the potential effects of diseases on huemul population dynamics, skeletal remains collected between 1993 and 2007 in the Andes (41-45 degrees S, 71.5-72 degrees W) were examined macroscopically for osteopathologic changes. Bones from six huemul were free of lesions, findings were inconclusive in 13 huemul with less than three bones, and osteopathologic processes were detected in 13 adults. Considering the limited remains/case, the prevalence of osteopathy (52%) among adults probably is conservative; 63% showed mandibular, 100% maxillary, and 78% appendicular lesions. Although predation represented the actual cause of death, the observed skeletal lesions would affect predator avoidance, possibly explaining the low average adult age (3.1 yr) and lack of population recovery. Compared with other studies in ungulates, huemul were affected at a younger age, and they had more severe pathologic changes. Due to the chronic nature of disease, low huemul population density, physiognomy, and spatiotemporal pattern of lesions, we discard senescence; gender; fulminating infections; congenital anomalies; metabolic, endocrine, genetic, or neurologic disorders; parasitism or marasmus; and fluorosis as primary etiologic factors. We hypothesize that generalized secondary chronic alveolar osteomyelitis and osteoarthritis in huemul is related to the nutritional ecology of these animals. Selenium deficiency, which impairs bone metabolism and causes periodontitis in ruminants, occurs in the region and it is more prevalent at high altitudes. Traditional winter grounds at low elevations, sometimes far from high mountains, have been converted to livestock production, which has eliminated migratory behavior and keeps huemul in remote high-elevation refuges. Although this descriptive study contributes to huemul conservation, additional approaches are needed to investigate the etiology of this osteopathy and to close other gaps in knowledge on biology and ecology of huemul.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%