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Spatial patterns in the size of Chinese lizards are driven by multiple factors

BACKGROUND: For almost two centuries, ecologists have examined geographical patterns in the evolution of body size and the associated determinants. During that time, one of the most common patterns to have emerged is the increase in body size with increasing latitude (referred to as Bergmann's...

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Autores principales: Liang, Tao, Zhang, Zi, Dai, Wen‐ya, Shi, Lei, Lu, Chang‐hu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8293706/
https://www.ncbi.nlm.nih.gov/pubmed/34306648
http://dx.doi.org/10.1002/ece3.7784
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author Liang, Tao
Zhang, Zi
Dai, Wen‐ya
Shi, Lei
Lu, Chang‐hu
author_facet Liang, Tao
Zhang, Zi
Dai, Wen‐ya
Shi, Lei
Lu, Chang‐hu
author_sort Liang, Tao
collection PubMed
description BACKGROUND: For almost two centuries, ecologists have examined geographical patterns in the evolution of body size and the associated determinants. During that time, one of the most common patterns to have emerged is the increase in body size with increasing latitude (referred to as Bergmann's rule). Typically, this pattern is explained in terms of an evolutionary response that serves to minimize heat loss in colder climates, mostly in endotherms. In contrast, however, this rule rarely explains geographical patterns in the evolution of body size among ectotherms (e.g., reptiles). LOCATION: China. AIM: In this study, we assembled a dataset comprising the maximum sizes of 211 lizard species in China and examined the geographical patterns in body size evolution and its determinants. Specifically, we assessed the relationship between body size and climate among all lizard species and within four major groups at both assemblage and interspecific levels. RESULTS: Although we found that the body size of Chinese lizards was larger in warmer regions, we established that at the assemblage level, size was correlated with multiple climatic factors, and that body size–climate correlations differed within the four major groups. Phylogenetic analysis at the species level revealed that no single climatic factor was associated with body size, with the exception of agamids, for which size was found to be positively correlated with temperature. MAIN CONCLUSIONS: Geographical patterns in Chinese lizard body size are driven by multiple factors, and overall patterns are probably influenced by those of the major groups. We suggest that our analyses at two different levels may have contributed to the inconsistent results obtained in this study. Further studies investigating the effects of altitude and ecological factors are needed to gain a more comprehensive understanding of the evolution of ectotherm body size.
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spelling pubmed-82937062021-07-23 Spatial patterns in the size of Chinese lizards are driven by multiple factors Liang, Tao Zhang, Zi Dai, Wen‐ya Shi, Lei Lu, Chang‐hu Ecol Evol Original Research BACKGROUND: For almost two centuries, ecologists have examined geographical patterns in the evolution of body size and the associated determinants. During that time, one of the most common patterns to have emerged is the increase in body size with increasing latitude (referred to as Bergmann's rule). Typically, this pattern is explained in terms of an evolutionary response that serves to minimize heat loss in colder climates, mostly in endotherms. In contrast, however, this rule rarely explains geographical patterns in the evolution of body size among ectotherms (e.g., reptiles). LOCATION: China. AIM: In this study, we assembled a dataset comprising the maximum sizes of 211 lizard species in China and examined the geographical patterns in body size evolution and its determinants. Specifically, we assessed the relationship between body size and climate among all lizard species and within four major groups at both assemblage and interspecific levels. RESULTS: Although we found that the body size of Chinese lizards was larger in warmer regions, we established that at the assemblage level, size was correlated with multiple climatic factors, and that body size–climate correlations differed within the four major groups. Phylogenetic analysis at the species level revealed that no single climatic factor was associated with body size, with the exception of agamids, for which size was found to be positively correlated with temperature. MAIN CONCLUSIONS: Geographical patterns in Chinese lizard body size are driven by multiple factors, and overall patterns are probably influenced by those of the major groups. We suggest that our analyses at two different levels may have contributed to the inconsistent results obtained in this study. Further studies investigating the effects of altitude and ecological factors are needed to gain a more comprehensive understanding of the evolution of ectotherm body size. John Wiley and Sons Inc. 2021-06-27 /pmc/articles/PMC8293706/ /pubmed/34306648 http://dx.doi.org/10.1002/ece3.7784 Text en © 2021 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Research
Liang, Tao
Zhang, Zi
Dai, Wen‐ya
Shi, Lei
Lu, Chang‐hu
Spatial patterns in the size of Chinese lizards are driven by multiple factors
title Spatial patterns in the size of Chinese lizards are driven by multiple factors
title_full Spatial patterns in the size of Chinese lizards are driven by multiple factors
title_fullStr Spatial patterns in the size of Chinese lizards are driven by multiple factors
title_full_unstemmed Spatial patterns in the size of Chinese lizards are driven by multiple factors
title_short Spatial patterns in the size of Chinese lizards are driven by multiple factors
title_sort spatial patterns in the size of chinese lizards are driven by multiple factors
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8293706/
https://www.ncbi.nlm.nih.gov/pubmed/34306648
http://dx.doi.org/10.1002/ece3.7784
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