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Metabolic Turnover Rates of Carbon and Nitrogen Stable Isotopes in Captive Juvenile Snakes by Aaron T. Fisk; Kim Sash; John Maerz; William Palmer; John P. Carroll; M. Aaron MacNeil is a Chemistry article available to read on EtoBox.

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## Abstract Metabolic turnover rates (__m__) of __δ__^15^N and __δ__^13^C were assessed in different tissues of newly hatched captive‐raised corn snakes (__Elaphe guttata guttata__) fed maintenance diets consisting of earthworms (__Eisenia foetida__) that varied substantially in __δ__^15^N (by 644‰) and __δ__^13^C (by 5.0‰). Three treatments were used during this 144 day experiment that consisted of the same diet throughout (__control__), shifting from a depleted to an enriched stable isotope signature diet (__uptake__), and shifting from an enriched to depleted stable isotope signature diet (__elimination__). Values of __δ__^13^C in the liver, blood, and muscle of the control snakes reached equilibrium with and were, respectively, 1.73, 2.25 and 2.29 greater than in their diet, this increase is called an isotopic discrimination factor (Δ__δ__^13^C = __δ__^13^C~snake~ − __δ__^13^C~food~). Values of __δ__^15^N in snake tissues did not achieve equilibrium with the diets in any of the exposures and thus Δ^15^N could not be estimated. Values of metabolic turnover rates (__m__) for __δ__^13^C and __δ__^15^N were greater in liver than in muscle and blood, which were similar, and relative

Who reads Metabolic Turnover Rates of Carbon and Nitrogen Stable Isotopes in Captive Juvenile Snakes?

Author

Aaron T. Fisk; Kim Sash; John Maerz; William Palmer; John P. Carroll; M. Aaron MacNeil

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0951-4198)

Published

2008

Language

EN

Field

Chemistry (Physical Sciences)