Differentiation of the epidermis of scutes in embryos and juveniles of the tortoise Testudo hermanni with emphasis on beta-keratinization

Acta Zoologica

Volumn 86, Issue 3, 2005, Pages 205-216

  Alibardi, L ^a   Dipietrangelo, L ^a  

^a UNIVERSITY OF BOLOGNA   (Italy)

Author keywords

Beta keratin; Embryo; Immunocytochemistry; Skin; Tortoise; Ultrastructure

Indexed keywords

REPTILE; SKIN; ULTRASTRUCTURE;

CROCODYLIDAE (ALL CROCODILES); LEPIDOSAURIA; REPTILIA; TESTUDINES; TESTUDO HERMANNI;

EID: 27744468725     PISSN: 00017272     EISSN: None     Source Type: Journal    
DOI: 10.1111/j.1463-6395.2005.00203.x     Document Type: Article

References (32)

1. Alibardi, L. 1999. Differentiation of the epidermis of neck, tail and limbs in the embryo of the turtle Emydura macquarii (Gray, 1830). - Belgian Journal of Zoology 129: 391-404.
2. Alibardi, L. 2002. Immunocytochemical observations on the cornification of soft and hard epidermis in the turtle Chrysemys picta. - Zoology 105: 31-44.
3. Alibardi, L. 2003. Adaptation to the land: the skin of reptiles in comparison to that of amphibians and endotherm amniotes. - Journal of Experimental Zoology 298B: 12-41.
4. Alibardi, L. 2004a. Immunocytochemical and autoradiographic studies on the process of keratinization in avian epidermis suggest absence of keratohyalin. J. Morphol. 259: 238-253.
5. Alibardi, L. 2004b. Dermo-epidermal interactions in reptilian scales: speculations on the evolution of scales, feathers, and hairs. - Journal of Experimental Zoology 302B: 365-383.
6. Alibardi, L. and Maderson, P. F. A. 2003. Observations on the histochemistry and ultrastructure of the epidermis of the tuatara, Sphenodon punctatus (Sphenodontida, Lepidosauria, Reptilia): a contribution to an understanding of the lepidosaurian epidermal generation and the evolutionary origin of the squamate shedding complex. - Journal of Morphology 256: 111-133.
7. Alibardi, L. and Sawyer, R. H. 2002. Immunocytochemical analysis of beta keratins in the epidermis of chelonians, lepidosaurians, and archosaurians. - Journal of Experimental Zoology 293: 27-38.
8. Alibardi, L. and Thompson, M. B. 1999a. Morphogenesis of shell and scutes in the turtle Emydura macquarii. - Australian Journal of Zoology 47: 245-260.
9. Alibardi, L. and Thompson, M. B. 1999b. Epidermal differentiation during carapace and plastron formation in the embryo of the turtle Emydura macquarii. - Journal of Anatomy 194: 531-545.
10. Alibardi, L., Spisni, E. and Toni, M. 2004. Differentiation in the epidermis of turtle: an immunocytochemical, autoradiographic and electrophoretic analysis. - Acta Histochemica 106: 379-395.
11. Baden, H. P. and Maderson, P. F. A. 1970. Morphological and biophysical identification of fibrous proteins in the amniote epidermis. - Journal of Experimental Zoology 174: 225-232.
12. Baden, H. P., Sviokla, S. and Roth, I. 1974. The structural protein of reptilian scales. - Journal of Experimental Zoology 187: 287-294.
13. Burke, A. C. 1991. The development and evolution of the turtle body plan: inferring intrinsic aspects of the evolutionary process from experimental embryology. - American Zoology 31: 616-627.
14. Dhouailly, D. and Maderson, P. F. A. 1984. Ultrastructural observations of the embryonic development of the integument of Lacerta muralis (Lacertilia, Reptilia). - Journal of Morphology 179: 203-228.
15. Dhouailly, D., Oliveira-Martinez, I., Fliniaux, I., Missier, S., Viallet, J. P. and Thelu, J. 2004. Skin field formation: morphogenetic events. - International Journal of Developmental Biology 48: 85-91.
16. Gillespie, J. M., Marshall, R. C. and Woods, E. F. 1982. A comparison of lizard claw keratin proteins with those of avian beak and claw. - Journal of Molecular Evolution 18: 121-129.
17. Holmer, B. L., Chen-Li, B. V. M., Berry, K. H., Denslow, N. D., Jacobson, E. R., Sawyer, R. H. and Williams, E. J. 2001. Soluble scute proteins of heathy and ill desert tortoises (Gopherus agassizii). - American Journal of Veterinary Research 62: 104-110.
18. Landmann, L. 1986. The skin of reptiles: epidermis and dermis. In Bereiter-Hahn, J., Matoltsy, A. G. and Sylvia-Richards, K. (Eds): Biology of the Integument, Vol. 2 Vertebrates, pp. 150-187. Springer Verlag, Berlin-Heidelberg-New York.
19. Maderson, P. F. A. 1965. The embryonic development of the squamate integument. - Acta Zoologica 46: 275-295.
20. Maderson, P. F. A. 1985. Some developmental problems of the reptilian integument. In Gans, C., Billett, F. and Maderson, P. F. A. (Eds): Biology of the Reptilia, Development B, Vol. 14, pp. 525-598. John Wiley & Sons, New York.
21. Marshall, R. C. and Gillespie, J. M. 1982. The tryptophan-rich keratin protein fraction of claw of the lizard Varanus gouldii. - Comparative Biochemistry and Physiology 71B: 623-628.
22. Matoltsy, A. G. 1987. Cell and molecular biology of keratins. Concluding remarks and future directions. In Moscona, A. A. and Monroy, A. (Eds): (volume editor RH Sawyer). - Topics in Developmental Biology 22: 255-264. Academic Press Inc., Harcourt Brace Javanovich Publisher, Orlando, FL, USA.
23. Pough, F. H., Andrews, R. M., Cadle, J. E., Crump, M. L., Savitzky, A. H. and Wells, K. D. 2001. Herpetology, 2nd edn. Prentice Hall, Upper Saddle River, NJ, USA.
24. Sawyer, R. H. and Knapp, L. W. 2003. Avian skin development and the evolutionary origin of feathers. - Journal of Experimental Zoology 298B: 57-72.
25. Sawyer, R. H., Glenn, T., French, B., Mays, B., Shames, R. B., Barnes, G. L. and Ishikawa, Y. 2000. The expression of beta keratins in the epidermal appendages of reptiles and birds. - American Zoologist 40: 530-539.
26. Scala, C., Cenacchi, G., Ferrari, C., Pasquinelli, G., Preda, P. and Manara, G. 1992. A new acrylic resin formulation: a useful tool for histological, ultrastructural, and immunocytochemical investigations. - Journal of Histochemistry and Cytochemistry 40: 1799-1804.
27. Sengel, P. 1986. Epidermal-dermal interaction. In Bereiter-Hahn, J., Matoltsy, A. G. and Sylvia-Richards, K. (Eds): Biology of the Integument, Vol. 2 Vertebrates, pp. 374-408. Springer Verlag, Berlin-Heidelberg-New York.
28. Spearman, R. I. C. 1966. The keratinization of epidermal scales, feathers and hairs. - Biology Review 41: 59-96.
29. Spearman, R. I. C. 1969. The epidermis of the gopher tortoise Testudo polyphemus (Daudin). - Acta Zoologica 50: 1-9.
30. Wyld, J. A. and Brush, A. H. 1979. The molecular heterogeneity and diversity of reptilian keratins. - Journal of Molecular Evolution 12: 331-347.
31. Wyld, J. A. and Brush, A. H. 1983. Keratin diversity in the reptilian epidermis. - Journal of Experimental Zoology 225: 387-396.
32. Yntema, C. L. 1968. A series of stages in embryonic development of Chelydra serpentina. - Journal of Morphology 125: 219-252.