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Advantages of using fecal samples for stable isotope analysis in bats : evidence from a triple isotopic experiment

Advantages of using fecal samples for stable isotope analysis in bats : evidence from a triple isotopic experiment

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SALVARINA, Ioanna, Elizabeth YOHANNES, Björn M. SIEMERS, Klemen KOSELJ, 2013. Advantages of using fecal samples for stable isotope analysis in bats : evidence from a triple isotopic experiment. In: Rapid Communications in Mass Spectrometry. 27(17), pp. 1945-1953. ISSN 0951-4198. eISSN 1097-0231

@article{Salvarina2013-09-15Advan-25922, title={Advantages of using fecal samples for stable isotope analysis in bats : evidence from a triple isotopic experiment}, year={2013}, doi={10.1002/rcm.6649}, number={17}, volume={27}, issn={0951-4198}, journal={Rapid Communications in Mass Spectrometry}, pages={1945--1953}, author={Salvarina, Ioanna and Yohannes, Elizabeth and Siemers, Björn M. and Koselj, Klemen} }

Rapid Communications in Mass Spectrometry ; 27 (2013), 17. - S. 1945-1953 eng 2013-09-15 Siemers, Björn M. RATIONALE: Stable isotope analysis in ecological studies is usually conducted on biomaterials, e.g. muscle and blood,<br />that require catching the animals. Feces are rarely used for stable isotope analysis, despite the possibility of non-invasive sampling and short-term responsiveness to dietary changes. This promising method is neglected due to a lack of calibration experiments and unknown diet-feces isotopic difference (Δdiet-feces.<br />METHODS: To fill this gap, we simulated trophic changes occurring in nature when animals switch feeding habitats, e.g.<br />by moving from freshwater to terrestrial systems, from cultivated areas to forests or changing distance from marine<br />environments. In a controlled experiment, the diet of two bat species (Myotis myotis, Rhinolophus ferrumequinum) was<br />altered to an isotopically distinct one. We measured stable nitrogen, carbon and the rarely used sulfur isotope in feces,<br />and calculated Δdiet-feces values.<br />RESULTS: The feces acquired the new dietary signature within 2–3 h from food ingestion; thus, they are suited for<br />detecting recent and rapid dietary changes. The Δdiet-feces (Δ) did not differ between species or diet (overall means ± standard deviation (sd)): Δ15N: 1.47 ± 1.51‰, Δ13C: –0.11 ± 0.80‰, Δ34S: 0.74 ± 1.10‰. Only Δ15N for M. myotis was<br />significantly different from zero and only Δ13C differed among the days of the experiment.<br />CONCLUSIONS: Fecal stable isotopes can be now further applied in mammalian ecology. This includes a range of<br />applications, such as studying changes in trophic level, resource or habitat use, on a short time-scale. Such information<br />is gaining importance for monitoring rapidly changing ecosystems under anthropogenic influence. Copyright © 2013<br />John Wiley & Sons, Ltd. Koselj, Klemen Salvarina, Ioanna Koselj, Klemen deposit-license 2014-07-31T22:25:06Z 2014-01-29T10:38:20Z Advantages of using fecal samples for stable isotope analysis in bats : evidence from a triple isotopic experiment Yohannes, Elizabeth Yohannes, Elizabeth Salvarina, Ioanna Siemers, Björn M.

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

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