caa a22 4500 605513910 CHVBK 20210128100702.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00360-014-0869-1 doi (NATIONALLICENCE)springer-10.1007/s00360-014-0869-1 The thermal plasticity of locomotor performance has diverged between northern and southern populations of the eastern newt ( Notophthalmus viridescens ) [Elektronische Daten] [Patrick Mineo, Paul Schaeffer] Many temperate ectotherms undergo thermal acclimation to remain functional over a wide range of body temperatures, but few studies have investigated whether populations of a single species have evolved differences in the thermal plasticity of locomotor performance. Therefore, we asked whether the thermal plasticity of locomotor performance has diverged between northern and southern populations of eastern newts (Notophthalmus viridescens). We acclimated eastern newts from Florida and Maine to cold (6°C) or warm (28°C) conditions for 12weeks. Following acclimation, we measured the burst speed of newts at 6, 11.5, 17, 22.5, 28, and 33.5°C. We also measured the activities of creatine kinase (CK) and lactate dehydrogenase (LDH) in skeletal muscle of newts. The newts from Maine were better able to acclimate to low temperature compared to newts from Florida. Regardless of acclimation, the thermal sensitivity of burst speed was higher in the Florida compared to the Maine population. In general, newts from Maine performed better at low temperatures, whereas newts from Florida performed better at high temperatures. The activities of CK and LDH were lower in cold compared to warm-acclimated newts in the Florida population, but acclimation did not affect the activities of these enzymes in the Maine population. The activities of CK and LDH do not explain differences in the thermal plasticity of locomotor performance between populations. Our results demonstrate that the thermal sensitivity and plasticity of locomotor performance differ between northern and southern populations of eastern newts, suggesting that these traits readily adapt to the thermal environment. Springer-Verlag Berlin Heidelberg, 2014 Acclimation nationallicence Temperature nationallicence Amphibian nationallicence Mineo Patrick Department of Biology, Miami University, 212 Pearson Hall, 700 E. High Street, 45056, Oxford, OH, USA aut Schaeffer Paul Department of Biology, Miami University, 212 Pearson Hall, 700 E. High Street, 45056, Oxford, OH, USA aut Journal of Comparative Physiology B Springer Berlin Heidelberg 185/1(2015-01-01), 103-110 0174-1578 185:1<103 2015 185 360 https://doi.org/10.1007/s00360-014-0869-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00360-014-0869-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mineo Patrick Department of Biology, Miami University, 212 Pearson Hall, 700 E. High Street, 45056, Oxford, OH, USA aut NATIONALLICENCE 700 1- Schaeffer Paul Department of Biology, Miami University, 212 Pearson Hall, 700 E. High Street, 45056, Oxford, OH, USA aut NATIONALLICENCE 773 0- Journal of Comparative Physiology B Springer Berlin Heidelberg 185/1(2015-01-01), 103-110 0174-1578 185:1<103 2015 185 360