Biophysical Modeling of Water Economy Can Explain Geographic Gradient of Body Size in Anurans
| Autor: | Sidney F. Gouveia, Juan G. Rubalcaba, Denis V. Andrade, Natan Medeiros Maciel, Pablo A. Martinez, Fernando Rodrigues da Silva, Rafael P. Bovo |
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| Přispěvatelé: | Universidade Federal de Sergipe (UFS), Universidade de São Paulo (USP), Rey Juan Carlos Univ, Universidade Federal de São Carlos (UFSCar), Universidade Federal de Goiás (UFG), Universidade Estadual Paulista (Unesp) |
| Rok vydání: | 2019 |
| Předmět: |
Male
0106 biological sciences biophysical model ectotherms macrophysiology Body size Biology Models Biological water conservation hypothesis 010603 evolutionary biology 01 natural sciences 03 medical and health sciences Water conservation Evapotranspiration allometry evaporative water loss Animals Body Size Ecology Evolution Behavior and Systematics 030304 developmental biology Dendropsophus minutus 0303 health sciences Resistance (ecology) Ecology Water biology.organism_classification Ectotherm Allometry Anura Water economy Brazil |
| Zdroj: | Web of Science Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1537-5323 0003-0147 |
| DOI: | 10.1086/700833 |
| Popis: | Made available in DSpace on 2019-10-04T12:33:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01 Serrapilheira Institute Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Geographical gradients of body size express climate-driven constraints on animals, but whether they exist and what causes them in ectotherms remains contentious. For amphibians, the water conservation hypothesis posits that larger bodies reduce evaporative water loss (EWL) along dehydrating gradients. To address this hypothesis mechanistically, we build on well-established biophysical equations of water exchange in anurans to propose a state-transition model that predicts an increase of either body size or resistance to EWL as alternative specialization along dehydrating gradients. The model predicts that species whose water economy is more sensitive to variation in body size than to variation in resistance to EWL should increase in size in response to increasing potential evapotranspiration (PET). To evaluate the model predictions, we combine physiological measurements of resistance to EWL with geographic data of body size for four different anuran species. Only one species, Dendropsophus minutus, was predicted to exhibit a positive body size-PET relationship. Results were as predicted for all cases, with one species-Boana faber-showing a negative relationship. Based on an empirically verified mathematical model, we show that clines of body size among anurans depend on the current values of those traits and emerge as an advantage for water conservation. Our model offers a mechanistic and compelling explanation for the cause and variation of gradients of body size in anurans. Univ Fed Sergipe, Dept Ecol, BR-49100000 Sao Cristovao, Sergipe, Brazil Univ Sao Paulo, Inst Biosci, Dept Physiol, BR-05508090 Sao Paulo, Brazil Rey Juan Carlos Univ, Dept Biol & Geol, Phys & Inorgan Chem, Madrid 28933, Spain Univ Fed Sao Carlos, Dept Environm Sci, BR-18052780 Sorocaba, SP, Brazil Univ Fed Goias, Dept Ecol, BR-74001970 Goiania, Go, Brazil Sao Paulo State Univ, Dept Zool, BR-13506900 Rio Claro, SP, Brazil Univ Fed Sergipe, Dept Biol, BR-49100000 Sao Cristovao, Sergipe, Brazil Sao Paulo State Univ, Dept Zool, BR-13506900 Rio Claro, SP, Brazil Serrapilheira Institute: G-1709-18372 CNPq: 303180/2016-1 CNPq: 402469/2016-0 CAPES: 88881.157451/2017-01 FAPESP: 10/20061-6 FAPESP: 14/05624-5 FAPESP: 17/10338-0 CNPq: 166109/2015-0 CNPq: 302045/2012-0 CNPq: 306811/2015-4 CNPq: 472397/2013-3 CNPq: 201210767000812 FAPESP: 2012/07356-2 FAPESP: 2013/50714-0 FAPESP: 13/04190-9 |
| Databáze: | OpenAIRE |
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