Effects of selenium exposure on the hematology, innate immunity, and metabolic rate of yellow-bellied sliders (Trachemys scripta scripta)

Selenium (Se) is a naturally occurring essential element that can be toxic to vertebrates at high concentrations. Despite studies that have documented that wild reptile species can accumulate copious amounts of Se, little is known regarding specific toxicologic effects of Se. In this study, 70 juven...

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Bibliographic Details
Published in:Ecotoxicology (London) 2017-10, Vol.26 (8), p.1134-1146
Main Authors: Haskins, David L., Hamilton, Matthew T., Stacy, Nicole I., Finger, John W., Tuberville, Tracey D.
Format: Article
Language:English
Subjects:
Anaemia
Anemia
Biological effects
Blood
Capacity
Earth and Environmental Science
Ecology
Ecotoxicology
Environment
Environmental Management
Environmental Sciences & Ecology
Exposure
Haematology
Hematology
Immunity
Innate immunity
Kidneys
Liver
Metabolic rate
Methionine
Mortality
Oxygen consumption
Reptiles
Reptiles & amphibians
Selenium
Thresholds
Tissue
Toxicity
Toxicology
Trachemys scripta scripta
Turtles
Vertebrates
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Summary:Selenium (Se) is a naturally occurring essential element that can be toxic to vertebrates at high concentrations. Despite studies that have documented that wild reptile species can accumulate copious amounts of Se, little is known regarding specific toxicologic effects of Se. In this study, 70 juvenile yellow-bellied sliders ( Trachemys scripta scripta ) were exposed to one of three seleno- l -methionine (SetMet) treatments (control, n  = 24; 15 mg/kg, n  = 23; and 30 mg/kg, n  = 23) via weekly oral gavage for 5 weeks. At the conclusion of the experiment, kidney, liver, muscle, and blood samples were collected for quantitative Se analysis. Turtles in the SeMet treatment groups accumulated significantly higher amounts of Se in all tissue types relative to controls (all p  
ISSN:0963-9292
1573-3017
DOI:10.1007/s10646-017-1839-7