Short term impact of a single dose of iodine supplementation on serum iodine in black blotched stingrays (Taeniura meyeni)

Citation

Williams SM, Sullivan KE, Livingston S, Valdes EV, and Mylniczenko ND. 2019. Short term impact of a single dose of iodine supplementation on serum iodine in black blotched stingrays (Taeniura meyeni). In Brooks M, Freel T, Koutsos E Eds. Proceedings of the Thirteenth Conference on Zoo and Wildlife Nutrition, Zoo and Wildlife Nutrition Foundation and AZA Nutrition Advisory Group, Saint Louis, MO.

Abstract

Iodine is an essential nutrient for normal thyroid function. In fish, iodine in sea water is absorbed by the gills.When artificial sea water is sanitized by ozonation, iodine ions are oxidized into iodate; rendering them unavailable to animals. Elasmobranchs in aquaria are commonly supplemented with dietary iodine, as part of a multi-nutrient supplementation regimen. At Disney’s The Seas with Nemo and Friends®, we have reported serum iodine concentrations magnitudes higher in our southern stingray population when compared to managed and wild rays in natural sea water without supplementation (Williams, et al., 2016;Williams et al., 2017). In humans, dietary iodine is excreted in urine within 24-48 hours, (Zimmerman and Andersson, 2012).We tested the impact of a single dose of iodine supplementation on serum iodine status at set intervals.

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