Kieser J A, Groeneveld H T
Department of Oral Pathology, Witwatersrand University, Johannesburg, South Africa.
J Anat. 1992 Aug;181 ( Pt 1)(Pt 1):133-7.
Mandibulodental relations were evaluated in a sample of 34 adult Lycaon pictus crania (18 males, 16 females). Standard mesiodistal and buccolingual measurements, together with 8 mandibular measurements (intercondylar distance, intercarnassial breadth, mandibular length, arch length, condylar height, canine-condylar length, mandibular width, mandibular height) were allometrically scaled to total skull length. These results were then compared with those of domestic dogs and of 3 smaller southern African canids, Vulpes chama, Canis adustus and C. mesomelas. The results highlighted the differences in mandibulodental relations between males and females and provided support for the theory that females have relatively larger postcanine tooth sizes to match the higher masticatory demands of lactation and pregnancy. The African wild dog is shown to be more closely related dentally to the domestic dog than has previously been supposed.
对34个成年非洲野犬颅骨样本（18只雄性，16只雌性）的下颌牙齿关系进行了评估。标准的近远中径和颊舌径测量，以及8种下颌测量值（髁间距离、裂齿间宽度、下颌长度、牙弓长度、髁突高度、犬齿-髁突长度、下颌宽度、下颌高度）均根据全颅骨长度进行了异速生长缩放。然后将这些结果与家犬以及3种体型较小的南部非洲犬科动物（狐獴、黑背胡狼和黑背豺）的结果进行了比较。结果突出了雄性和雌性之间下颌牙齿关系的差异，并为雌性具有相对更大的犬齿后牙齿尺寸以适应哺乳和怀孕期间更高的咀嚼需求这一理论提供了支持。结果表明，非洲野犬在牙齿方面与家犬的关系比之前认为的更为密切。
