Lizard (brown sagrei) seeks more UVB if less Vitamin D in diet – Dec 2013

Ultraviolet Light Exposure and Response to Dietary Vitamin D3 in Two Jamaican Anoles

Journal of Herpetology 47(4):524-529. 2013, doi: http://dx.doi.org/10.1670/12-020
Gary W. Ferguson g.ferguson at tcu.edu, Adam J. Kingeter 2, and William H. Gehrmann
Department of Biology, Texas Christian University, Fort Worth, Texas 76129 USA
2Present address: Vanderbilt University Medical Center, Department of Anesthesiology, Nashville, Tennessee 37232 USA.

In Jamaica, free-living male and female-sized Anolis sagrei are exposed to more natural ultraviolet-B (UVB) from sunlight than male and female-sized Anolis lineatopus. In the laboratory, we tested predictions derived from the hypothesis that Anolis possess a mechanism for behaviorally photo-regulating their exposure to UVB depending on their dietary intake of vitamin D3. Anolis sagrei voluntarily exposed themselves more frequently to visible and UVB light and received higher doses of UVB in an artificial light gradient when fed a low vitamin D3 diet for 6 weeks than when subsequently fed a high dietary vitamin D3 diet for 6 weeks. When we returned the anole's diet to the low vitamin D3 regimen for a third 6-week period, UVB exposure remained lower than in the first 6-week period. This suggests an initial UV photo-regulatory adjustment to high dietary vitamin-D3 but a slow return to greater reliance on UVB-induced endogenous vitamin D3 production.
Conversely, while exposing themselves to UVB with similar frequency and doses as A. sagrei over the course of the 18-week experiment, A. lineatopus did not show the same decreased attraction to visible and UVB light in response to increased dietary vitamin D3. The response of A. sagrei in the laboratory to visible light without UVB was similar to their response to visible light with UVB. Therefore, the anoles appeared to be responding primarily to visible light. Anolis lineatopus may be unable to use dietary vitamin D3 to restore low vitamin D status.

Literature Cited

• Chen, T. C., Z. Lu, A. Perez, and M. F. Holick. 1993. Cutaneous synthesis of vitamin D3 in response to sun-tanning bed irradiation. In E. G. Jung and M. F. Holick (eds.), Biologic Effects of Light 1993, pp. 28–33. Walter de Gruyter, Berlin, Germany.
• Cowles, R. M., and C. M. Bogert. 1944. A preliminary study of the thermal requirements of desert reptiles. Bulletin American Museum Natural History 83:261–296.
• Ferguson, G. W., J. R. Jones, W. H. Gehrmann, S. H. Hammack, L. G. Talent, R. D. Hudson, E. S. Dierenfeld, M. P. Fitzpatrick, F. L. Frye, M. F. Holick et al. 1996. Indoor husbandry of the panther chameleon Chamaeleo [Furcifer] pardalis: effects of dietary vitamins A and D and ultraviolet irradiation on pathology and life-history traits. Zoo Biology 15:279–299. CrossRef
• Ferguson, G. W., W. H. Gehrmann, K. B. Karsten, S. H. Hammack, M. McRae, T. C. Chen, N. P. Lung, and M. F. Holick. 2003. Do panther chameleons bask to regulate endogenous vitamin D3 production? Physiological and Biochemical Zoology 76:52–59. CrossRef, PubMed
• Ferguson, G. W., W. H. Gehrmann, K. B. Karsten, A. J. Landwer, E. N. Carman, T. C. Chen, and M. F. Holick. 2005. Ultraviolet exposure and vitamin D synthesis in a sun-dwelling and a shade-dwelling species of Anolis: are there adaptations for lower UVB and dietary vitamin D3 availability in the shade? Physiological and Biochemical Zoology 78:193–200. CrossRef, PubMed
• Ferguson, G. W., W. H. Gehrmann, B. Peavy, C. Painter, R. Hartdegen, T. C. Chen, M. F. Holick, and Pinder J. E. III. 2009. Restoring vitamin D in monitor lizards: exploring the efficacy of dietary and UVB sources. Journal of Herpetological Medicine and Surgery. 19:81–88.
• Ferguson, G. W., A. M. Brinker, W. H. Gehrmann, S. E. Bucklin, F. M. Baines, and S. J. Mackin. 2010. Voluntary exposure of some Western-hemisphere snake and lizard species to ultraviolet-B radiation in the field: how much ultraviolet-B should a lizard or snake receive in captivity? Zoo Biology 29:317–334. CrossRef, PubMed
• Fleishman, L. J., M. Bowman, D. Saunders, W. E. Miller, M. J. Rury, and E. R. Loew. 1997. The visual ecology of Puerto Rican anoline lizards: habitat light and spectral sensitivity. Journal of Comparative Physiology A181:446–460.
• Gehrmann, W. H., J. D. Horner, G. W. Ferguson, T. C. Chen, and M. F. Holick. 2004. A comparison of responses by three broadband radiometers to different ultraviolet-B sources. Zoo Biology 23:355–363. CrossRef
• Hertz, P. E., L. J. Fleishman, and, C. Armsby. 1994. The influence of light intensity and temperature on microhabitat selection in two Anolis lizards. Functional Ecology 8:720–729. CrossRef
• Holick, M. F. 1996. The role of sunlight in providing vitamin D for bone health. In M. F. Holick and E. G. Jung (eds.), Biologic Effects of Light 1995, pp. 3–12. Walter de Gruyter, Berlin, Germany.
• Holick, M. F. 1999. Vitamin D: Physiology, Molecular Biology, and Clinical Application. Humana, New York.
• Holick, M. F. 2004. Vitamin D: importance in prevention of cancers, type 1 diabetes, heart disease, and osteoporosis. American Journal of Clinical Nutrition 79:362–371. PubMed
• Huey, R. B. 1982. Temperature, physiology and the ecology of reptiles. In C. Gans and F. H. Pough (eds.), Biology of the Reptilia. Vol. 12, pp. 25–91. Academic Press, New York.
• Karsten, K. B., G. W. Ferguson, T. C. Chen, and M. F. Holick. 2009. Panther chameleons, Furcifer pardalis, behaviorally regulate optimal exposure to UV depending on dietary vitamin D3 status. Physiological and Biochemical Zoology 82:218–225. CrossRef, PubMed
• Lister, B. 1976. The nature of niche expansion in West Indian Anolis lizards I: ecological consequences of reduced competition. Evolution 30:659–676. CrossRef
• Loew, E. R., L. J. Fleishman, R. G. Foster, and I. Provencio. 2002. Visual Pigments and oil droplets in diurnal lizards: a comparative study of Caribbean anoles. Journal of Experimental Biology 205:927–938. PubMed
• Lu, Z., T. C. Chen, L. Kline, T. Markestad, J. Pettifor, M. Ladizesky, C. Mautalin, and M. F. Holick. 1992. Photosynthesis of previtamin D3 in cities around the world. In M. F. Holick and A. M. Kligman (eds.), Biologic Effects of Light, pp. 48–52. Walter de Gruyter, Berlin, Germany.
• MacLaughlin, J. A., R. R. Anderson, and M. F. Holick. 1982. Spectral character of sunlight modulates photosynthesis of previtamin D3 and its photoisomers in human skin. Science 216:1001–1003. CrossRef, PubMed
• Manning, B., and G. C. Grigg. 1997. Basking is not of thermoregulatory significance in the “basking” freshwater turtle Emydura signata. Copeia 1997:579–584. CrossRef
• Plummer, M. V., T. L. Crabill, N. E. Mills, and S. L. Allen. 2005. Body temperature of free-ranging softshell turtles (Apalone spinifera) in a small stream. Herpetological Review 36:371–375.
• Pough, F. H., C. M. Janis, and J. B. Heiser. 2005. Vertebrate Life. 7th ed. Pearson, Upper Saddle River, NJ.

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• Overview Veterinary and vitamin D

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