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Giacometti D, Bars-Closel M, Kohlsdorf T, de Carvalho JE, Cury de Barros F. Environmental temperature predicts resting metabolic rates in tropidurinae lizards. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 2022; 337:1039-1052. [PMID: 36127811 DOI: 10.1002/jez.2656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/26/2022] [Accepted: 09/06/2022] [Indexed: 06/15/2023]
Abstract
Interspecific variation in metabolic rates may be associated with climate, habitat structure, and resource availability. Despite a strong link between ecology and physiology, there is a dearth in the understanding of how the costs of body maintenance change during ecological transitions. We focused on an ecologically diverse group of neotropical lizards (Tropidurinae) to investigate whether and how resting metabolic rate (RMR) evolved under divergent micro- and macrohabitat conditions. Using a phylogenetic framework, we tested whether species from hot and dry habitats had lower RMRs in relation to those from cooler and mesic habitats, and investigated whether microhabitat usage had an effect over body mass-adjusted RMRs. Our results suggest that RMRs are not phylogenetically structured in Tropidurinae. We found no correlation between metabolism, precipitation, and microhabitat usage. Species from warmer habitats had lower RMR compared to those from cooler habitats, supporting a mechanism of negative compensation in metabolic responses to temperature. Ectotherms from warmer habitats can limit energetic demand and expenditure through reduced RMR, whereas those from cooler habitats may sustain activity despite thermal constraints via increased RMR. Our work highlights the role of temperature in shaping metabolic responses in lizards, giving additional support to the notion that physiology and ecological contexts are intertwined.
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Affiliation(s)
- Danilo Giacometti
- Department of Biological Sciences, Brock University, St. Catharines, Ontario, Canada
- Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Paulo, Diadema, São Paulo, Brasil
| | - Melissa Bars-Closel
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Tiana Kohlsdorf
- Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - José Eduardo de Carvalho
- Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Paulo, Diadema, São Paulo, Brasil
| | - Fábio Cury de Barros
- Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Paulo, Diadema, São Paulo, Brasil
- Departamento de Biociências, Universidade do Estado de Minas Gerais, Passos, Minas Gerais, Brasil
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Slavenko A, Dror L, Camaiti M, Farquhar JE, Shea GM, Chapple DG, Meiri S. Evolution of diel activity patterns in skinks (Squamata: Scincidae), the world's second-largest family of terrestrial vertebrates. Evolution 2022; 76:1195-1208. [PMID: 35355258 PMCID: PMC9322454 DOI: 10.1111/evo.14482] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 03/07/2022] [Accepted: 03/11/2022] [Indexed: 01/21/2023]
Abstract
Many animals have strict diel activity patterns, with unique adaptations for either diurnal or nocturnal activity. Diel activity is phylogenetically conserved, yet evolutionary shifts in diel activity occur and lead to important changes in an organism's morphology, physiology, and behavior. We use phylogenetic comparative methods to examine the evolutionary history of diel activity in skinks, one of the largest families of terrestrial vertebrates. We examine how diel patterns are associated with microhabitat, ambient temperatures, and morphology. We found support for a nondiurnal ancestral skink. Strict diurnality in crown group skinks only evolved during the Paleogene. Nocturnal habits are associated with fossorial activity, limb reduction and loss, and warm temperatures. Our results shed light on the evolution of diel activity patterns in a large radiation of terrestrial ectotherms and reveal how both intrinsic biotic and extrinsic abiotic factors can shape the evolution of animal activity patterns.
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Affiliation(s)
- Alex Slavenko
- School of BiosciencesUniversity of SheffieldSheffieldSouth YorkshireUnited Kingdom
| | - Liat Dror
- School of ZoologyTel Aviv UniversityTel AvivIsrael
| | - Marco Camaiti
- School of Biological SciencesMonash UniversityClaytonVictoriaAustralia
| | - Jules E. Farquhar
- School of Biological SciencesMonash UniversityClaytonVictoriaAustralia
| | - Glenn M. Shea
- Sydney School of Veterinary Science B01University of SydneyNew South WalesAustralia,Australian Museum Research InstituteThe Australian MuseumSydneyNew South WalesAustralia
| | - David G. Chapple
- School of Biological SciencesMonash UniversityClaytonVictoriaAustralia
| | - Shai Meiri
- School of ZoologyTel Aviv UniversityTel AvivIsrael,The Steinhardt Museum of Natural HistoryTel AvivIsrael
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de Barros FC, Grizante MB, Zampieri FAM, Kohlsdorf T. Peculiar relationships among morphology, burrowing performance and sand type in two fossorial microteiid lizards. ZOOLOGY 2020; 144:125880. [PMID: 33310388 DOI: 10.1016/j.zool.2020.125880] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 12/16/2022]
Abstract
Associations among ecology, morphology and locomotor performance have been intensively investigated in several vertebrate lineages. Knowledge on how phenotypes evolve in natural environments likely benefits from identification of circumstances that might expand current ecomorphological equations. In this study, we used two species of Calyptommatus lizards from Brazilian Caatingas to evaluate if specific soil properties favor burrowing performance. As a derived prediction, we expected that functional associations would be easily detectable at the sand condition that favors low-resistance burrowing. We collected two endemic lizards and soil samples in their respective localities, obtained morphological data and recorded performance of both species in different sand types. As a result, the two species burrowed faster at the fine and homogeneous sand, the only condition where we detected functional associations between morphology and locomotion. In this sand type, lizards from both Calyptommatus species that have higher trunks and more concave heads were the ones that burrowed faster, and these phenotypic traits did not morphologically discriminate the two Calyptommatus populations studied. We discuss that integrative approaches comprising manipulation of environmental conditions clearly contribute to elucidate processes underlying phenotypic evolution in fossorial lineages.
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Affiliation(s)
- Fábio C de Barros
- Department of Biology, FFCLRP, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirão Preto, SP, 14040-901, Brazil; Department of Ecology and Evolutionary Biology, ICAQF, Federal University of São Paulo, Rua Prof. Artur Riedel, 275, Diadema, SP, 09972-270, Brazil.
| | - Mariana B Grizante
- Department of Biology, FFCLRP, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirão Preto, SP, 14040-901, Brazil; Instituto Dante Pazzanese de Cardiologia, Brazil
| | - Felipe A M Zampieri
- Department of Biology, FFCLRP, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirão Preto, SP, 14040-901, Brazil
| | - Tiana Kohlsdorf
- Department of Biology, FFCLRP, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirão Preto, SP, 14040-901, Brazil.
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