caa a22 4500 445893249 CHVBK 20180317145623.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10750-011-0804-3 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0804-3 Ontogenetic dietary shifts in European common frog ( Rana temporaria ) revealed by stable isotopes [Elektronische Daten] [Giedrius Trakimas, Timothy Jardine, Rūta Barisevičiūtė, Andrius Garbaras, Raminta Skipitytė, Vidmantas Remeikis] During migrations and ontogeny amphibians change their habitat and feeding, and thus are important in linking terrestrial and aquatic ecosystems. We measured δ 13C and δ 15N values of early stages (egg, embryo, tadpole) and toes of adult frogs Rana temporaria, collected from a small wetland in Lithuania. We compared the isotopic composition of these tissues with potential food sources, excrements of tadpoles, and filled intestinal tracts. We found that δ 13C values in R. temporaria tadpoles were markedly depleted in comparison to adults, eggs or embryos, demonstrating a terrestrial to aquatic shift in energy sources. After the onset of feeding, tadpoles approached isotopic equilibrium with available food (algae and litter). Tadpoles had higher δ 15N than both algae and litter, differing by 3.6 and 2.4‰, respectively, and similar δ 13C to these sources. However, tadpole excrements and body tissue diverged, with mean δ 13C values of excrements (−30.3±1.6‰ SD) more similar to litter (−31.7±1.2‰ SD) and body tissue δ 13C (−34.8±0.7‰ SD) more similar to algae (−34.2±4.1‰ SD). This suggests that algal resources are critical in early life stages of this anuran, particularly at stages characterized by high growth and low development (stages: 25-35). Springer Science+Business Media B.V., 2011 Metamorphosis nationallicence Tadpoles nationallicence Algae nationallicence Litter nationallicence Excrements nationallicence Wetlands nationallicence Trakimas Giedrius Center for Ecology & Environmental Research, Vilnius University, M.K. Čiurlionio 21/27, LT-03101, Vilnius, Lithuania aut Jardine Timothy Australian Rivers Institute, Griffith University, 170 Kessels Road, 4111, Nathan Brisbane, QLD, Australia aut Barisevičiūtė Rūta Nuclear & Environmental Research Laboratory, Center for Physical Sciences & Technology, Savanoriu ave. 231, LT-02300, Vilnius, Lithuania aut Garbaras Andrius Nuclear & Environmental Research Laboratory, Center for Physical Sciences & Technology, Savanoriu ave. 231, LT-02300, Vilnius, Lithuania aut Skipitytė Raminta Center for Ecology & Environmental Research, Vilnius University, M.K. Čiurlionio 21/27, LT-03101, Vilnius, Lithuania aut Remeikis Vidmantas Nuclear & Environmental Research Laboratory, Center for Physical Sciences & Technology, Savanoriu ave. 231, LT-02300, Vilnius, Lithuania aut Hydrobiologia Springer Netherlands 675/1(2011-10-01), 87-95 0018-8158 675:1<87 2011 675 10750 https://doi.org/10.1007/s10750-011-0804-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0804-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Trakimas Giedrius Center for Ecology & Environmental Research, Vilnius University, M.K. Čiurlionio 21/27, LT-03101, Vilnius, Lithuania aut NATIONALLICENCE 700 1- Jardine Timothy Australian Rivers Institute, Griffith University, 170 Kessels Road, 4111, Nathan Brisbane, QLD, Australia aut NATIONALLICENCE 700 1- Barisevičiūtė Rūta Nuclear & Environmental Research Laboratory, Center for Physical Sciences & Technology, Savanoriu ave. 231, LT-02300, Vilnius, Lithuania aut NATIONALLICENCE 700 1- Garbaras Andrius Nuclear & Environmental Research Laboratory, Center for Physical Sciences & Technology, Savanoriu ave. 231, LT-02300, Vilnius, Lithuania aut NATIONALLICENCE 700 1- Skipitytė Raminta Center for Ecology & Environmental Research, Vilnius University, M.K. Čiurlionio 21/27, LT-03101, Vilnius, Lithuania aut NATIONALLICENCE 700 1- Remeikis Vidmantas Nuclear & Environmental Research Laboratory, Center for Physical Sciences & Technology, Savanoriu ave. 231, LT-02300, Vilnius, Lithuania aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 675/1(2011-10-01), 87-95 0018-8158 675:1<87 2011 675 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer