Cranial suture complexity in white-tailed deer (Odocoileus virginianus)

Journal of Morphology
Christopher W Nicolay, Mark J Vaders

Abstract

Neurocranial expansion and mastication are commonly implicated as the two major biomechanical factors affecting suture morphology. In deer the antlers provide an additional source of biomechanical stress acting on the skull. Equivalent stresses are not found in females, who lack antlers. We analyzed the complexity and interdigitation of the interfrontal and coronal sutures that surround the antler-bearing frontal bones of (n = 67) white-tailed deer (Odocoileus virginianus) to 1) evaluate changes in suture morphology throughout ontogeny, and 2) test the hypothesis that male deer have more complex sutures than females. Two methods were used to quantify suture morphology: fractal analysis and length-ratios (actual suture length divided by direct straightline length). Both techniques produced similar results, although the two methods cannot be considered equivalent. Suture complexity increases markedly throughout ontogeny, but appears to level off after animals have reached adulthood. Cranial size in males, but not females, continues to increase in adults. No significant increase in suture complexity with age in the adult cohort was detected. While deer are highly dimorphic in size and the presence of antlers, no significant differ...Continue Reading

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Citations

Oct 4, 2012·Journal of Medical Primatology·James CrayMichael I Siegel
May 10, 2017·Journal of Morphology·Guido BuezasAldo Vassallo
Oct 10, 2018·Journal of Anatomy·Craig ByronShivam Patel
Aug 26, 2015·Advanced Materials·Steven E NalewayMarc A Meyers
Oct 8, 2020·Journal of the Royal Society, Interface·Heather E WhiteAnjali Goswami
Nov 23, 2019·Acta Biomaterialia·Zengqian LiuRobert O Ritchie
Apr 13, 2021·Frontiers in Cell and Developmental Biology·Heather E WhiteAbigail S Tucker

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