The shell is a bony structure unique to order Chelonia. No other animal, living or extinct, has its body enclosed within a bony shell similarly constructed in its entirety. This review article describes shell structure, pertinent shell vocabulary terms, as well as shell function, morphology, growth, and pathology . . .
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References
- Achrai B, Wagner HD. Micro-structure and mechanical properties of the turtle carapace as a biological composite shield. Acta Biomater. 2013; 9(4):5890-5902. doi: 10.1016/j.actbio.2012.12.023.
- Alheit B, Bargmann S, Reddy BD. Computationally modelling the mechanical behaviour of turtle shell sutures-A natural interlocking structure. J Mech Behav Biomed Mater. 2020;110:103973. doi: 10.1016/j.jmbbm.2020.103973. Epub 2020 Jul 6. PMID: 32957258.
- Berry JF, Shine R. Sexual size dimorphism and sexual selection in turtles (order testudines). Oecologia. 1980;44(2):185-191. doi: 10.1007/BF00572678. PMID: 28310555.
- Boyer TH, Boyer DM. Turtles, tortoises and terrapins. In: Mader DR (ed). Reptile Medicine and Surgery, 2nd ed. St. Louis: Saunders Elsevier; 2006: 81-84.
- Boyer TH, Innis CJ. Chelonian taxonomy, anatomy, and physiology. In: Mader DR (ed). Mader’s Reptile and Amphibian Medicine and Surgery, 3rd 2019. St. Louis: Elsevier. Pp.
- Brito ES, Miranda E, Tortato FR. Chelonian predation by jaguars. Chelonian Conservation and Biology. 2018;17(2), 280-283. doi: 2744/CCB-v17i2.15.
- Burke AC. Origin of the turtle body plan. In: Brainerd EL, Shubin N, Dial KP (eds). Great Transformations in Vertebrate Evolution. 2015; Chicago: University of Chicago Press. Pp. 77–79.
- Chen IH, Yang W, Meyers MA. Leatherback sea turtle shell: A tough and flexible biological design. Acta Biomater. 2015;28:2-12. doi: 10.1016/j.actbio.2015.09.023. Epub 2015 Sep 21. PMID: 26391496.
- Chiari Y, Claude J. Study of the carapace shape and growth in two Galápagos tortoise lineages. J Morphol. 2011;272(3):379-386. doi: 10.1002/jmor.10923.
- Chiari Y, van der Meijden A, Caccone A, Claude J, Gilles B. Self-righting potential and the evolution of shell shape in Galápagos tortoises. Sci Rep. 2017;7(1):15828. doi: 10.1038/s41598-017-15787-7. PMID: 29192279; PMCID: PMC5709378.
- Chitty J, Raftery A. Essentials of Tortoise Medicine and Surgery. 2013; Malden, MA: Wiley Blackwell. Pp. 27-29.
- Claude J, Paradis E, Tong H& Auffray JC. A geometric morphometric assessment of the effects of environment and cladogenesis on the evolution of the turtle shell. J Linn Soc. 2003;79, 485–501. doi: 10.1046/j.1095-8312.2003.00198.x.
- Cordero GA. The turtle’s shell. Curr Biol. 2017;27(5):R168-R169. doi: 10.1016/j.cub.2016.12.040. PMID: 28267966.
- DiRizzuo S, Praschag P, Miller L, Brodsky M. Successful treatment of severe ulcerative dermatitis in an Aubry’s flapshell turtle (Cycloderma aubryi). J Herpetological Med Surg. 2022;32(4):262-270. doi: 5818/JHMS-D-22-00002.
- Domokos G, Varkonyi PL. Geometry and self-righting of turtles. R. Soc. B. 2008;275:11–17. doi: 10.1098/rspb.2007.1188.
- Emmons LH. Jaguar predation on chelonians. J Herpetol. 1989;23:311-314.
- Fish JF, Stayton CT. Morphological and mechanical changes in juvenile red-eared slider turtle (Trachemys scripta elegans) shells during ontogeny. J Morphol. 2014;275(4):391-7. doi: 10.1002/jmor.20222. Epub 2013 Dec 3. PMID: 24301373.
- Flanagan JP. Chelonians (turtles, tortoises). In: Fowler’s Zoo and Wild Animal Medicine Volume 8. 2015; St. Louis, MO: Elsevier Saunders. P. 27.
- Gilbert SF, Cebra-Thomas JA, Burke AC. How the turtle gets its shell. In: Wyneken J, Godfrey MH, Bels V (eds). Biology of Turtles. 2008; Boca Raton: CRC Press. Pp. 1–16.
- Gramanzini M, Di Girolamo N, Gargiulo S, et al. Assessment of dual-energy x-ray absorptiometry for use in evaluating the effects of dietary and environmental management on Hermann’s tortoises (Testudo hermanni). Am J Vet Res. 2013;74(6):918-24. doi: 10.2460/ajvr.74.6.918. PMID: 23718661.
- Halámková L, Schulte JA, Langen TA. Patterns of sexual size dimorphism in Chelonia, Biological Journal of the Linnean Society. 2013; 108(2):396-413. doi: 1111/j.1095-8312.2012.02015.x.
- Jackson DC. Life in a Shell: A Physiologist’s View of a Turtle. 2011; Cambridge, MA: Harvard University Press. P. 1.
- Kirchgessner M, Mitchell MA. Chelonians. In: Mitchell MA, Tully TN (eds). Manual of Exotic Pet Practice. 2009; St. Louis, MO: Saunders Elsevier. P. 207.
- Magwene PM, Socha JJ. Biomechanics of turtle shells: how whole shells fail in compression. J Exp Zool A Ecol Genet Physiol. 2013;319(2):86-98. doi: 10.1002/jez.1773.
- McArthur S, Myer J, Innis C. Anatomy and physiology. In: Boyer Th, Boyer DM (eds). Turtles, tortoises, and terrapins. 2004; Ames, IA: Blackwell Publishing. Pp. 35-37, 58.
- Mendoza P, Furuta C, Garcia B, et al. Starch and fiber intake effects on energy metabolism, growth, and carapacial scute pyramiding of red-footed tortoise hatchlings (Chelonoidis carbonaria). Comp Biochem Physiol A Mol Integr Physiol. 2022;265:111131. doi: 10.1016/j.cbpa.2021.111131. Epub 2021 Dec 25. PMID: 34958956.
- Nagashima H, Kuraku S, Uchida K, et al. Body plan of turtles: an anatomical, developmental and evolutionary perspective. Anat Sci Int. 2012;87(1):1-13. doi: 10.1007/s12565-011-0121-y. Epub 2011 Dec 1. PMID: 22131042.
- Nagashima H, Sugahara F, Takechi M, et al. Evolution of the turtle body plan by the folding and creation of new muscle connections. Science. 2009;325(5937):193-6. doi: 10.1126/science.1173826. PMID: 19590000.
- Pritchard PCH. Evolution and structure of the turtle shell. In: Wyneken J, Godfrey MH, Bels V (eds). Biology of Turtles. 2008; Boca Raton: CRC Press. Pp. 45–138
- Rieppel O. How did the turtle get its shell? Science. 2009;325:154-155. doi: 10.1126/science.1177446.
- Ritz J, Clauss M, Streich WJ, Hatt JM. Variation in growth and potentially associated health status in Hermann’s and spur-thighed tortoise (Testudo hermanni and Testudo graeca). Zoo Biol. 2012;31(6):705-17. doi: 10.1002/zoo.21002. Epub 2012 Jan 30. PMID: 22290654.
- Stancel CF, Dierenfeld ES, Schoknecht PA. Calcium and phosphorus supplementation decreases growth, but does not induce pyramiding, in young red-eared sliders, Trachemys scripta elegans. Zoo Biol. 1998;17:17–24.
- Stayton CT. Biomechanics on the half shell: functional performance influences patterns of morphological variation in the emydid turtle carapace. Zoology. 2011;114(4):213-223. doi: 1016/j.zool.2011.03.002.
- Tabaka C. Differentiating male and female Lissemys punctata (Indian flapshell turtle). World Chelonian Trust. Available at https://www.chelonia.org/sexing/sexing_L_punctata.htm. Accessed October 28, 2023.
- Wiesner CS, Iben C. Influence of environmental humidity and dietary protein on pyramidal growth of carapaces in African spurred tortoises (Geochelone sulcata). J Anim Physiol Anim Nutr (Berl). 2003;87(1-2):66-74. doi: 10.1046/j.1439-0396.2003.00411.x. PMID: 14511150.
- Willemsen RE, Hailey A. Sexual dimorphism of body size and shell shape in European tortoises. Zool Lond. 2003;260, 353–365. doi: 10.1017/S0952836903003820.
Pollock C. Understanding the chelonian shell. October 31, 2023. LafeberVet Web site. Available at https://lafeber.com/vet/understanding-the-chelonian-shell/