Literaturdatenbank
Literaturdatenbank |
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Lock, B., & Mitchell, M. , Effects of ultraviolet radiation on 25-hydroxyvitamin d3 synthesis in juvenile blanding’s turtles (emydoidea blandingii) - abstract. Unpublished paper presented at Program and Abstracts of the Tenth Annual Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles.
Added by: Sarina Wunderlich (06 Jul 2014 16:11:48 UTC) |
| Resource type: Conference Paper BibTeX citation key: Lock2013 View all bibliographic details  |
Categories: General Keywords: Ernährung - nutrition, Schildkröten - turtles + tortoises, Sehvermögen - vision, Testudinidae, Testudo hermanni, Veterinärmedizin - veterinary medicine Creators: Lock, Mitchell Collection: Program and Abstracts of the Tenth Annual Symposium on the Conservation and Biology of Tortoises and Freshwater Turtles |
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| Abstract |
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Sixteen captive-hatched, juvenile Blanding’s Turtles (Emydoidea blandingii) were exposed to UVB radiation for six months to determine if there are increased concentrations of circulating 25-hydroxyvitamin D3 in this species. Turtles were randomly allocated to two groups (eight turtles per group). An initial blood sample was collected from all turtles for measurement of circulating 25-hydroxyvitamin D3 concentrations. Turtles of one group were then provided no supplemental lighting, whereas turtles of the other group were exposed to full-spectrum coil bulbs at a distance of 22.86 cm. The UV-A and UV-B generated by the supplemental lighting was measured by a radiometer-photometer at weekly intervals. Measurements were taken at 2.54 and 22.86 cm from the bulb surface. The study was conducted over a six-month period. At the end of the study, a blood sample was collected from all turtles for determination of 25-hydroxyvitamin D3. Mean ± SD 25-hydroxyvitamin D3 concentrations differed significantly between turtles provided supplemental UV radiation (36.1 ± 10.7 nmol/L) and those not provided UV radiation (6.5 ± 1.8 nmol/L). Appropriate husbandry recommendations for maintaining Blanding’s Turtles should include use of sunlight that is unobstructed by UV-B filtering material or provision of an artificial source of UV-B radiation.
Added by: Sarina Wunderlich |