naa a22 4500 510780458 CHVBK 20180411083245.0 cr unu---uuuuu 180411e20131201xx s 000 0 eng 10.1007/s11692-013-9232-9 doi (NATIONALLICENCE)springer-10.1007/s11692-013-9232-9 An Intercontinental Analysis of Climate-Driven Body Size Clines in Reptiles: No Support for Patterns, No Signals of Processes [Elektronische Daten] [Daniel Pincheira-Donoso, Shai Meiri] Climatic gradients impose clinal selection on animal ecological and physiological performance, often promoting geographic body size clines. Bergmann's rule predicts that body size increases with decreasing environmental temperatures given the need to retain body-heat through adjustments of body-mass-to-surface-area ratio. This prediction generally holds for endotherms, but remains controversial for ectotherms. An alternative interpretation, the ‘resource rule', suggests that food abundance, primary productivity and precipitation (which, unlike temperature, do not necessarily correlate with geography), drive body size clines. We investigate geographic variation in body size within 65 species of lizards and snakes (squamates) based on an intercontinental dataset (6,500+ specimens belonging to 56 Israeli species, and multiple populations of nine Liolaemus species from Argentina and Chile). Bergmann's rule is only rarely supported by our data (in four species, 6%), whereas six species (9%) follow its converse (hence, it is unsupported in 94% of cases). Similarly, size increases with resource abundance in only 12 species (18%). Therefore, although neither of the rules is supported, factors suggested by the resource rule are better predictors of body size than temperature. Surprisingly, we show that some measures of the extent of a species' climatic envelope do not affect the likelihood of it showing a size-climate relationship. We conclude that negative size-temperature associations are an exception rather than a generality among squamates. Springer Science+Business Media New York, 2013 Macroecology nationallicence Bergmann's rule nationallicence Resource rule nationallicence Climatic variability nationallicence Geographic variation in body size nationallicence Lizards nationallicence Snakes nationallicence Liolaemus nationallicence Pincheira-Donoso Daniel Laboratory of Evolutionary Ecology of Adaptations, School of Life Sciences, University of Lincoln, Riseholme Park Campus, LN2 2GL, Lincoln, Lincolnshire, UK aut Meiri Shai Department of Zoology, Tel Aviv University, 69978, Tel Aviv, Israel aut Evolutionary Biology Springer US; http://www.springer-ny.com 40/4(2013-12-01), 562-578 0071-3260 40:4<562 2013 40 11692 https://doi.org/10.1007/s11692-013-9232-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11692-013-9232-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pincheira-Donoso Daniel Laboratory of Evolutionary Ecology of Adaptations, School of Life Sciences, University of Lincoln, Riseholme Park Campus, LN2 2GL, Lincoln, Lincolnshire, UK aut NATIONALLICENCE 700 1- Meiri Shai Department of Zoology, Tel Aviv University, 69978, Tel Aviv, Israel aut NATIONALLICENCE 773 0- Evolutionary Biology Springer US; http://www.springer-ny.com 40/4(2013-12-01), 562-578 0071-3260 40:4<562 2013 40 11692 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer