Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
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Gregory N. Scott Hendrik H. Nollens, T. S. L. (2019). Evaluation of plasma 25-hydroxyvitamin d, ionized calcium, and parathyroid hormone in green sea turtles (chelonia mydas) exposed to different intensities of ultraviolet b radiation. Journal of zoo and wildlife medicine, 50(2), 421 - 426 - 6. Added by: Sarina (2019-06-18 13:06:40) Last edited by: Sarina (2019-06-18 13:09:00) |
| Resource type: Journal Article DOI: 10.1638/2017-0115 BibTeX citation key: GregoryNScottHendrikHNollens2019 View all bibliographic details  |
Categories: Englisch = English Keywords: Schildkröten = Turtles, UVBreitband = UVBroadband, Vitamin D = Vitamin D Creators: Gregory N. Scott Hendrik H. Nollens Collection: Journal of zoo and wildlife medicine |
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| Abstract |
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For many reptile species, adequate ultraviolet B (UVB) radiation is essential for proper calcium metabolism. In this study, the effects of UVB radiation on calcium metabolism were evaluated in green sea turtles (Chelonia mydas). 25-Hydroxyvitamin D, parathyroid hormone (PTH), and ionized calcium (iCa) were measured in juvenile (n = 18, 9 indoor, 9 outdoor) and adult (n = 8, 4 indoor, 4 outdoor) turtles. All animals were fed an identical diet. Outdoor animals had access to unfiltered sunlight, whereas indoor animals were housed under artificial lighting without UVB. Mean values for 25-hydroxyvitamin D for the outdoor and indoor groups were 34.33 ± 7.98 nmol/L and 7.11 ± 1.69 nmol/L for juveniles and 73.25 ± 30.34 nmol/L and 14.0 ± 11.52 nmol/L for adults respectively. Mean values for iCa for the outdoor and indoor groups were 0.98 ± 0.07 mmol/L and 0.99 ± 0.06 mmol/L for juveniles and 1.18 ± 0.22 mmol/L and 0.97 ± 0.18 mmol/L for adults respectively. UVB exposure (P < 0.001) and age (P < 0.001) had a significant effect on 25-hydroxyvitamin D as well as a significant interaction between the two variables (P = 0.008), with highest values in adult outdoor turtles. There was a significant interaction between age group and UVB status for iCa (P = 0.036), with greater values in older outdoor turtles. 25-Hydroxyvitamin D and total calcium were positively correlated
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