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Horváth G, Sos T, Bóné G, Lőrincz CE, Pap PL, Herczeg G. Integrating behavioural thermoregulatory strategy into the animal personality framework using the common lizard, Zootoca vivipara as a model. Sci Rep 2024; 14:14200. [PMID: 38902323 PMCID: PMC11189939 DOI: 10.1038/s41598-024-64305-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 06/07/2024] [Indexed: 06/22/2024] Open
Abstract
The study of consistent between-individual behavioural variation in single (animal personality) and across two or more behavioural traits (behavioural syndrome) is a central topic of behavioural ecology. Besides behavioural type (individual mean behaviour), behavioural predictability (environment-independent within-individual behavioural variation) is now also seen as an important component of individual behavioural strategy. Research focus is still on the 'Big Five' traits (activity, exploration, risk-taking, sociability and aggression), but another prime candidate to integrate to the personality framework is behavioural thermoregulation in small-bodied poikilotherms. Here, we found animal personality in thermoregulatory strategy (selected body temperature, voluntary thermal maximum, setpoint range) and 'classic' behavioural traits (activity, sheltering, risk-taking) in common lizards (Zootoca vivipara). Individual state did not explain the between-individual variation. There was a positive behavioural type-behavioural predictability correlation in selected body temperature. Besides an activity-risk-taking syndrome, we also found a risk-taking-selected body temperature syndrome. Our results suggest that animal personality and behavioural syndrome are present in common lizards, both including thermoregulatory and 'classic' behavioural traits, and selecting high body temperature with high predictability is part of the risk-prone behavioural strategy. We propose that thermoregulatory behaviour should be considered with equal weight to the 'classic' traits in animal personality studies of poikilotherms employing active behavioural thermoregulation.
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Affiliation(s)
- Gergely Horváth
- Department of Systematic Zoology and Ecology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/c, 1117, Budapest, Hungary.
- HUN-REN-ELTE-MTM Integrative Ecology Research Group, Pázmány Péter sétány 1/C, 1117, Budapest, Hungary.
| | - Tibor Sos
- Evolutionary Ecology Group, Hungarian Department of Biology and Ecology, Centre for Systems Biology, Biodiversity and Bioresources, Babeş-Bolyai University, Clinicilor street 5-7, Cluj-Napoca, Romania
- "Milvus Group" Bird and Nature Protection Association, B-dul 1 Decembrie 1918 121, 540445, Tîrgu Mureș, Romania
| | - Gábor Bóné
- "Milvus Group" Bird and Nature Protection Association, B-dul 1 Decembrie 1918 121, 540445, Tîrgu Mureș, Romania
| | - Csanád Endre Lőrincz
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, 6726, Szeged, Hungary
| | - Péter László Pap
- Evolutionary Ecology Group, Hungarian Department of Biology and Ecology, Centre for Systems Biology, Biodiversity and Bioresources, Babeş-Bolyai University, Clinicilor street 5-7, Cluj-Napoca, Romania
| | - Gábor Herczeg
- Department of Systematic Zoology and Ecology, Institute of Biology, ELTE Eötvös Loránd University, Pázmány Péter sétány 1/c, 1117, Budapest, Hungary
- HUN-REN-ELTE-MTM Integrative Ecology Research Group, Pázmány Péter sétány 1/C, 1117, Budapest, Hungary
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2
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Plasman M, Gonzalez-Voyer A, Bautista A, Díaz DE LA Vega-Pérez AH. Flexibility in thermal requirements: a comparative analysis of the wide-spread lizard genus Sceloporus. Integr Zool 2024. [PMID: 38880782 DOI: 10.1111/1749-4877.12860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
Adaptation or acclimation of thermal requirements to environmental conditions can reduce thermoregulation costs and increase fitness, especially in ectotherms, which rely heavily on environmental temperatures for thermoregulation. Insight into how thermal niches have shaped thermal requirements across evolutionary history may help predict the survival of species during climate change. The lizard genus Sceloporus has a widespread distribution and inhabits an ample variety of habitats. We evaluated the effects of geographical gradients (i.e. elevation and latitude) and local environmental temperatures on thermal requirements (i.e. preferred body temperature, active body temperature in the field, and critical thermal limits) of Sceloporus species using published and field-collected data and performing phylogenetic comparative analyses. To contrast macro- and micro-evolutional patterns, we also performed intra-specific analyses when sufficient reports existed for a species. We found that preferred body temperature increased with elevation, whereas body temperature in the field decreased with elevation and increased with local environmental temperatures. Critical thermal limits were not related to the geographic gradient or environmental temperatures. The apparent lack of relation of thermal requirements to geographic gradient may increase vulnerability to extinction due to climate change. However, local and temporal variations in thermal landscape determine thermoregulation opportunities and may not be well represented by geographic gradient and mean environmental temperatures. Results showed that Sceloporus lizards are excellent thermoregulators, have wide thermal tolerance ranges, and the preferred temperature was labile. Our results suggest that Sceloporus lizards can adjust to different thermal landscapes, highlighting opportunities for continuous survival in changing thermal environments.
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Affiliation(s)
- Melissa Plasman
- Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Alejandro Gonzalez-Voyer
- Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Amando Bautista
- Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
| | - Aníbal H Díaz DE LA Vega-Pérez
- Consejo Nacional de Humanidades, Ciencias, y Tecnologías-Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, Mexico
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3
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Mader S, Goldenberg J, Massetti F, Bisschop K, D’Alba L, Etienne RS, Clusella‐Trullas S, Shawkey MD. How melanism affects the sensitivity of lizards to climate change. Funct Ecol 2022. [DOI: 10.1111/1365-2435.13993] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Sebastian Mader
- Evolution and Optics of Nanostructures Group Department of Biology Ghent University Ghent Belgium
- Theoretical Research in Evolutionary Life Sciences Groningen Institute for Evolutionary Life Sciences University of Groningen Groningen The Netherlands
| | - Jonathan Goldenberg
- Evolution and Optics of Nanostructures Group Department of Biology Ghent University Ghent Belgium
| | - Federico Massetti
- Centre for Invasion Biology Department of Botany and Zoology Stellenbosch University Stellenbosch South Africa
| | - Karen Bisschop
- Theoretical Research in Evolutionary Life Sciences Groningen Institute for Evolutionary Life Sciences University of Groningen Groningen The Netherlands
- Terrestrial Ecology Unit Department of Biology Ghent University Ghent Belgium
- Institute for Biodiversity and Ecosystem Dynamics University of Amsterdam Amsterdam The Netherlands
| | - Liliana D’Alba
- Evolution and Optics of Nanostructures Group Department of Biology Ghent University Ghent Belgium
| | - Rampal S. Etienne
- Theoretical Research in Evolutionary Life Sciences Groningen Institute for Evolutionary Life Sciences University of Groningen Groningen The Netherlands
| | - Susana Clusella‐Trullas
- Centre for Invasion Biology Department of Botany and Zoology Stellenbosch University Stellenbosch South Africa
| | - Matthew D. Shawkey
- Evolution and Optics of Nanostructures Group Department of Biology Ghent University Ghent Belgium
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4
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McTernan MR, Sears MW. Repeatability of Voluntary Thermal Maximum and Covariance with Water Loss Reveal Potential for Adaptation to Changing Climates. Physiol Biochem Zool 2022; 95:113-121. [PMID: 34986078 DOI: 10.1086/717938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AbstractAlthough climate warming poses a grave threat to amphibians, little is known about the capacity of this group to evolve in response to warming. The capacity of key traits to evolve depends on the presence of genetic variation on which selection can act. Here, we use repeatability estimates to estimate the potential upper bounds of heritable genetic variation in voluntary and critical thermal maxima of gray-cheeked salamanders (Plethodon metcalfi). Increases in thermal tolerance may also require concordant increases in resistance to water loss because hotter temperatures incur greater evaporative risk. Therefore, we also tested for a correlation between voluntary thermal maxima and resistance to water loss and conducted an acclimation study to test for covariation between these traits in response to warming. Voluntary thermal maxima exhibited low to moderate levels of repeatability (R=0.32, P=0.045), while critical thermal maxima exhibited no statistically significant repeatability (R=0.10, P=0.57). Voluntary thermal maxima also correlated positively with resistance to water loss (R=0.31, P=0.025) but only when controlling for body mass. Voluntary thermal maxima and resistance to water loss also exhibited different acclimatory responses across control (12°C-18°C) and warm (18°C-24°C) temperature regimes, indicating a potential decoupling of traits in different thermal environments. By addressing the repeatability of thermal tolerance and the potential for covariation with resistance to water loss, we begin to address some of the key requirements of amphibians to evolve in warming climates.
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5
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Giacometti D, Yagi KT, Abney CR, Jung MP, Tattersall GJ. Staying warm is not always the norm: behavioural differences in thermoregulation of two snake species. CAN J ZOOL 2021. [DOI: 10.1139/cjz-2021-0135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Thermal biology research compares field with laboratory data to elucidate the evolution of temperature-sensitive traits in ectotherms. The hidden challenge of many of these studies is discerning whether animals actively thermoregulate, since motivation is not typically assessed. By studying the behaviours involved in thermoregulation, we can better understand the mechanisms underlying body temperature control. Using an integrative approach, we assessed the thermoregulatory and thermotactic behaviours of two sympatric snake species with contrasting life histories: the generalist Eastern Garter Snake (Thamnophis sirtalis sirtalis ( Linnaeus, 1758 )) and the semi-fossorial Northern Red-bellied Snake (Storeria occipitomaculata occipitomaculata ( Storer, 1839 )). We expected that thermoregulatory behaviours would be optimized based on life history, in that T. s. sirtalis would show higher evidence for thermally oriented behaviours than S. o. occipitomaculata due to its active nature. Thamnophis sirtalis sirtalis actively thermoregulated, had higher thermal preferences (29.4 ± 2.5 vs. 25.3 ± 3.6 °C), and was more active than S. o. occipitomaculata, which showed relatively low evidence for thermotaxis. Our results build on the notion that evaluating movement patterns and rostral orientation towards a heat source can help ascertain whether animals make thermally motivated choices. Our data provide insight into the thermoregulatory strategies used by snakes with different life histories and maximize the information provided by behavioural thermoregulation experiments.
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Affiliation(s)
- Danilo Giacometti
- Department of Biological Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
- Departamento de Ecologia e Biologia Evolutiva, Universidade Federal de São Paulo, Diadema, 09972-270, Brazil
| | - Katharine T. Yagi
- Department of Biological Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Curtis R. Abney
- Department of Biological Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Matthew P. Jung
- Department of Biological Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - Glenn J. Tattersall
- Department of Biological Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
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6
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Vicenzi N, Bacigalupe LD, Laspiur A, Ibargüengoytía N, Sassi PL. Could plasticity mediate highlands lizards' resilience to climate change? A case study of the leopard iguana (Diplolaemus leopardinus) in Central Andes of Argentina. J Exp Biol 2021; 224:269253. [PMID: 34160050 DOI: 10.1242/jeb.242647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/16/2021] [Indexed: 11/20/2022]
Abstract
The predicted rise of global temperatures is of major concern for ectotherms because of its direct impact on their behavior and physiology. As physiological performance mediates a species' resilience to warming exposure, physiological plasticity could greatly reduce the susceptibility to climate change. We studied the degree to which Diplolaemus leopardinus lizards are able to adjust behavioral and physiological traits in response to short periods of temperature change. We used a split cross design to measure the acclimation response of preferred body temperature (Tp), and the thermal performance curve of resting metabolic rate (RMR) and evaporative water loss (EWL). Our results showed that plasticity differs among traits: whereas Tp and EWL showed lower values in warm conditions, the body temperature at which RMR was highest increased. Moreover, RMR was affected by thermal history, showing a large increase in response to cold exposure in the group initially acclimated to warm temperatures. The reduction of EWL and the increase in optimal temperature will give lizards the potential to partially mitigate the impact of rising temperatures in the energy cost and water balance. However, the decrease in Tp and the sensitivity to the warm thermal history of RMR could be detrimental to the energy net gain, increasing the species' vulnerability, especially considering the increase of heat waves predicted for the next 50 years. The integration of acclimation responses in behavioral and physiological traits provides a better understanding of the range of possible responses of lizards to cope with the upcoming climatic and environmental modifications expected as a result of climate change.
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Affiliation(s)
- Nadia Vicenzi
- Instituto Argentino de Investigaciones de las Zonas Áridas (IADIZA-CONICET), Avenida Ruiz Leal s/n, Mendoza 5500, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre Contreras 1300, Mendoza 5500, Argentina
| | - Leonardo D Bacigalupe
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia 5090000, Chile
| | - Alejandro Laspiur
- Instituto de Investigaciones en Biodiversidad y Medioambiente, Consejo Nacional de Investigaciones Científicas y Técnicas (INIBIOMA-CONICET), Quintral 1250, San Carlos de Bariloche 8400, Argentina
| | - Nora Ibargüengoytía
- Instituto de Investigaciones en Biodiversidad y Medioambiente, Consejo Nacional de Investigaciones Científicas y Técnicas (INIBIOMA-CONICET), Quintral 1250, San Carlos de Bariloche 8400, Argentina
| | - Paola L Sassi
- Instituto Argentino de Investigaciones de las Zonas Áridas (IADIZA-CONICET), Avenida Ruiz Leal s/n, Mendoza 5500, Argentina.,Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre Contreras 1300, Mendoza 5500, Argentina
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7
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Senczuk G, Gramolini L, Avella I, Mori E, Menchetti M, Aloise G, Castiglia R. No association between candidate genes for color determination and color phenotype in
Hierophis viridiflavus,
and characterization of a contact zone. J ZOOL SYST EVOL RES 2021. [DOI: 10.1111/jzs.12451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gabriele Senczuk
- Dipartimento di Agricoltura, Ambiente e Alimenti University of Molise Campobasso Italy
- Dipartimento di Biologia e Biotecnologie “Charles Darwin” Università “La Sapienza” Roma Rome Italy
| | - Laura Gramolini
- Dipartimento di Biologia e Biotecnologie “Charles Darwin” Università “La Sapienza” Roma Rome Italy
- Institut für Biologie Humboldt‐Universität zu Berlin Berlin Germany
| | - Ignazio Avella
- Dipartimento di Biologia e Biotecnologie “Charles Darwin” Università “La Sapienza” Roma Rome Italy
- CIBIO/InBIO ‐ Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto Vairão Portugal
| | - Emiliano Mori
- Istituto di Ricerca sugli Ecosistemi Terrestri Consiglio Nazionale delle Ricerche Sesto Fiorentino Italy
| | | | - Gaetano Aloise
- Museo di Storia Naturale della Calabria e Orto Botanico Università della Calabria Rende Italy
| | - Riccardo Castiglia
- Dipartimento di Biologia e Biotecnologie “Charles Darwin” Università “La Sapienza” Roma Rome Italy
- Museo di Anatomia Comparata “Battista Grassi” Università “La Sapienza” Roma Rome Italy
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8
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Behavioural thermoregulation by the endangered crocodile lizard (Shinisaurus crocodilurus) in captivity. J Therm Biol 2020; 93:102731. [PMID: 33077142 DOI: 10.1016/j.jtherbio.2020.102731] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 08/19/2020] [Accepted: 09/13/2020] [Indexed: 11/20/2022]
Abstract
Understanding the factors that may affect behavioural thermoregulation of endangered reptiles is important for their conservation because thermoregulation determines body temperatures and in turn physiological functions of these ectotherms. Here we measured seasonal variation in operative environmental temperature (Te), body temperature (Tb), and microhabitat use of endangered crocodile lizards (Shinisaurus crocodilurus) from a captive population, within open and shaded enclosures, to understand how they respond to thermally challenging environments. Te was higher in open enclosures than in shaded enclosures. The Tb of lizards differed between the open and shaded enclosures in summer and autumn, but not in spring. In summer, crocodile lizards stayed in the water to avoid overheating, whereas in autumn, crocodile lizards perched on branches seeking optimal thermal environments. Crocodile lizards showed higher thermoregulatory effectiveness in open enclosures (with low thermal quality) than in shaded enclosures. Our study suggests that the crocodile lizard is capable of behavioural thermoregulation via microhabitat selection, although overall, it is not an effective thermoregulator. Therefore, maintaining diverse thermal environments in natural habitats for behavioural thermoregulation is an essential measure to conserve this endangered species both in the field and captivity.
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9
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Chukwuka CO, Monks JM, Cree A. Heat and water loss versus shelter: a dilemma in thermoregulatory decision making for a retreat-dwelling nocturnal gecko. J Exp Biol 2020; 223:jeb231241. [PMID: 32778565 DOI: 10.1242/jeb.231241] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/02/2020] [Indexed: 08/26/2023]
Abstract
Understanding the interaction between upper voluntary thermal limit (VTmax) and water loss may aid in predicting responses of ectotherms to increasing temperatures within microhabitats. However, the temperature at which climate heating will force cool-climate nocturnal lizards to abandon daytime retreats remains poorly understood. Here, we developed a new laboratory protocol for determining VTmax in the retreat-dwelling, viviparous Woodworthia 'Otago/Southland' gecko, based on escape behaviour (abandonment of heated retreat). We compared the body temperature (Tb) at VTmax, and duration of heating, between two source groups with different thermal histories, and among three reproductive groups. We also examined continuous changes in Tb (via an attached biologger) and total evaporative water loss (EWL) during heating. In the field, we measured Tb and microhabitat thermal profiles to establish whether geckos reach VTmax in nature. We found that VTmax and duration of heating varied between source groups (and thus potentially with prior thermal experience), but not among reproductive groups. Moreover, geckos reached a peak temperature slightly higher than VTmax before abandoning the retreat. Total EWL increased with increasing VTmax and with the duration of heating. In the field, pregnant geckos with attached biologgers reached VTmax temperature, and temperatures of some separately monitored microhabitats exceeded VTmax in hot weather implying that some retreats must be abandoned to avoid overheating. Our results suggest that cool-climate nocturnal lizards that inhabit daytime retreats may abandon retreats more frequently if climate warming persists, implying a trade-off between retention of originally occupied shelter and ongoing water loss due to overheating.
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Affiliation(s)
- Christian O Chukwuka
- Department of Zoology, University of Otago, Dunedin 9016, New Zealand
- Department of Biology, Alex Ekwueme Federal University, Ndufu-Alike Ikwo, Abakaliki, Ebonyi State, Nigeria
| | - Joanne M Monks
- Department of Zoology, University of Otago, Dunedin 9016, New Zealand
- Department of Conservation, Dunedin 9058, New Zealand
| | - Alison Cree
- Department of Zoology, University of Otago, Dunedin 9016, New Zealand
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10
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Leirião L, Piantoni C, Ribeiro PL, Navas CA. Independent influence of thermoregulatory cost on the lower and upper set-points of a heliothermic lizard. Behav Processes 2019; 164:17-24. [PMID: 30978389 DOI: 10.1016/j.beproc.2019.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 03/22/2019] [Accepted: 04/02/2019] [Indexed: 11/29/2022]
Abstract
Studies on ectothermic vertebrates generally lead to average indicators of thermal preferences measured in the laboratory, which do not say about responses to natural environmental change and may not inform about individual variation and its triggering mechanisms. We studied whether and how changes in costs of thermoregulation influence the preferred temperature (Tp) of individual lizards and their energetic investment in thermoregulation by exposing specimens to three treatments of increasing costs, recording body temperature (Tb) and distance walked (energetic investment). Moderate costs induced an investment trade-off between energy-investment in thermoregulation and Tb, and highlighted individual variation that decreased with higher costs. Lower average Tp's were observed in the high costs trials as a result of the decreased values of the lower and upper voluntary Tb's. As costs increased, lizards walked a shorter overall distance and accepted lower Tb's, but lizards still engaged in costly thermoregulation. Individual variation resulted in two main thermoregulatory patterns that in certain ecological contexts may have an important role in decision-making and adjusting to temperatures that are far from optimal temperatures for performance and physiological processes.
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Affiliation(s)
- Luciana Leirião
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão Tr. 14 No. 101, CEP 05508-900, São Paulo, SP, Brazil.
| | - Carla Piantoni
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão Tr. 14 No. 101, CEP 05508-900, São Paulo, SP, Brazil.
| | - Pedro L Ribeiro
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão Tr. 14 No. 101, CEP 05508-900, São Paulo, SP, Brazil.
| | - Carlos A Navas
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão Tr. 14 No. 101, CEP 05508-900, São Paulo, SP, Brazil.
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11
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Logan ML, Curlis JD, Gilbert AL, Miles DB, Chung AK, McGlothlin JW, Cox RM. Thermal physiology and thermoregulatory behaviour exhibit low heritability despite genetic divergence between lizard populations. Proc Biol Sci 2019; 285:rspb.2018.0697. [PMID: 29743257 DOI: 10.1098/rspb.2018.0697] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 04/13/2018] [Indexed: 11/12/2022] Open
Abstract
Ectothermic species are particularly sensitive to changes in temperature and may adapt to changes in thermal environments through evolutionary shifts in thermal physiology or thermoregulatory behaviour. Nevertheless, the heritability of thermal traits, which sets a limit on evolutionary potential, remains largely unexplored. In this study, we captured brown anole lizards (Anolis sagrei) from two populations that occur in contrasting thermal environments. We raised offspring from these populations in a laboratory common garden and compared the shape of their thermal performance curves to test for genetic divergence in thermal physiology. Thermal performance curves differed between populations in a common garden in ways partially consistent with divergent patterns of natural selection experienced by the source populations, implying that they had evolved in response to selection. Next, we estimated the heritability of thermal performance curves and of several traits related to thermoregulatory behaviour. We did not detect significant heritability in most components of the thermal performance curve or in several aspects of thermoregulatory behaviour, suggesting that contemporary selection is unlikely to result in rapid evolution. Our results indicate that the response to selection may be slow in the brown anole and that evolutionary change is unlikely to keep pace with current rates of environmental change.
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Affiliation(s)
- Michael L Logan
- Smithsonian Tropical Research Institute, Ciudad de Panamá, Panama
| | - John David Curlis
- Georgia Southern University, Statesboro, GA, USA.,University of Virginia, Charlottesville, VA, USA
| | | | | | - Albert K Chung
- Georgia Southern University, Statesboro, GA, USA.,University of Virginia, Charlottesville, VA, USA
| | | | - Robert M Cox
- University of Virginia, Charlottesville, VA, USA
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12
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Muñoz MM, Bodensteiner BL. Janzen's Hypothesis Meets the Bogert Effect: Connecting Climate Variation, Thermoregulatory Behavior, and Rates of Physiological Evolution. Integr Org Biol 2019; 1:oby002. [PMID: 33791511 PMCID: PMC7671085 DOI: 10.1093/iob/oby002] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Understanding the motors and brakes that guide physiological evolution is a topic of keen interest, and is of increasing importance in light of global climate change. For more than half a century, Janzen’s hypothesis has been used to understand how climatic variability influences physiological divergence across elevation and latitude. At the same time, there has been increasing recognition that behavior and physiological evolution are mechanistically linked, with regulatory behaviors often serving to dampen environmental selection and stymie evolution (a phenomenon termed the Bogert effect). Here, we illustrate how some aspects of Janzen’s hypothesis and the Bogert effect can be connected to conceptually link climate, behavior, and rates of physiological evolution in a common framework. First, we demonstrate how thermal heterogeneity varies between nighttime and daytime environments across elevation in a tropical mountain. Using data from Hispaniolan Anolis lizards, we show how clinal variation in cold tolerance is consistent with thermally homogenous nighttime environments. Elevational patterns of heat tolerance and the preferred temperature, in contrast, are best explained by incorporating the buffering effects of thermoregulatory behavior in thermally heterogeneous daytime environments. In turn, climatic variation and behavior interact to determine rates of physiological evolution, with heat tolerance and the preferred temperature evolving much more slowly than cold tolerance. Conceptually bridging some aspects of Janzen’s hypothesis and the Bogert effect provides an integrative, cohesive framework illustrating how environment and behavior interact to shape patterns of physiological evolution.
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Affiliation(s)
- M M Muñoz
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA 24060
| | - B L Bodensteiner
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA 24060
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13
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Struelens Q, Rebaudo F, Quispe R, Dangles O. Thermal pace-of-life strategies improve phenological predictions in ectotherms. Sci Rep 2018; 8:15891. [PMID: 30367155 PMCID: PMC6203799 DOI: 10.1038/s41598-018-34274-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 10/04/2018] [Indexed: 01/20/2023] Open
Abstract
Phenological variability among populations is widespread in nature. A few predictive phenological models integrate intrapopulational variability, but none has ever explored the individual strategies potentially occurring within a population. The "pace-of-life" syndrome accounts for such individual strategies, but has yet to be explored under a phenological context. Here we integrated, for the first time, the slow-fast thermal strategies stemming from the "pace-of-life" into a mechanistic predictive framework. We obtained 4619 phenological observations of an important crop pest in the Bolivian Andes by individually following 840 individuals under five rearing temperatures and across nine life stages. The model calibrated with the observed individual "pace-of-life" strategies showed a higher accuracy in phenological predictions than when accounting for intrapopulational variability alone. We further explored our framework with generated data and suggest that ectotherm species with a high number of life stages and with slow and/or fast individuals should exhibit a greater variance of populational phenology, resulting in a potentially longer time window of interaction with other species. We believe that the "pace-of-life" framework is a promising approach to improve phenological prediction across a wide array of species.
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Affiliation(s)
- Quentin Struelens
- Muséum National d'Histoire Naturelle, Sorbonne Universités, Paris, France. .,Institut de Recherche pour le Développement, Centre d'Ecologie Fonctionnelle et Evolutive, UMR 5175, CNRS, Université de Montpellier, Université Paul Valéry, Montpellier, EPHE, IRD, Montpellier, France.
| | - François Rebaudo
- Institut de Recherche pour le Développement, UMR EGCE-Université Paris Sud-CNRS-IRD-Paris Saclay, Gif-sur-Yvette, France
| | | | - Olivier Dangles
- Institut de Recherche pour le Développement, Centre d'Ecologie Fonctionnelle et Evolutive, UMR 5175, CNRS, Université de Montpellier, Université Paul Valéry, Montpellier, EPHE, IRD, Montpellier, France.,Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, New York, USA
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Affiliation(s)
- Lumír Gvoždík
- Inst. of Vertebrate Biology of the Czech Academy of Sciences, Květná 8; CZ-603 65 Brno Czech Republic
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Van BERKEL J, CLUSELLA-TRULLAS S. Behavioral thermoregulation is highly repeatable and unaffected by digestive status inAgama atra. Integr Zool 2018; 13:482-493. [DOI: 10.1111/1749-4877.12325] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jenna Van BERKEL
- Centre for Invasion Biology, Department of Botany and Zoology; Stellenbosch University; Matieland South Africa
| | - Susana CLUSELLA-TRULLAS
- Centre for Invasion Biology, Department of Botany and Zoology; Stellenbosch University; Matieland South Africa
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16
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The impact of posture and basking orientation on thermoregulation in the Sungazer (Smaug giganteus). J Therm Biol 2018; 75:45-53. [PMID: 30017051 DOI: 10.1016/j.jtherbio.2018.05.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 05/24/2018] [Accepted: 05/24/2018] [Indexed: 11/22/2022]
Abstract
Body temperature (Tb) is one of the most influential factors affecting physiological processes in ectothermic animals. Reptiles use behaviours such as shuttling, and postural and orientation adjustments to ensure that Tb remains close to a target. It is thought that target body temperature (Ttarget) is aligned to the physiological and behavioural thermal optima of the animal. The Sungazer (Smaug giganteus), a Threatened lizard species, is unique amongst the Cordylidae in that lizards inhabit self-excavated burrows in open grasslands, a habitat in which there are few exposed rock basking sites. In this situation, Tbs are likely to be greatly influenced by postural and orientation adjustments during basking. We measured Tbs using modified iButtons, and calculated Ttarget of free-ranging Sungazers in order to assess the impact of body posture and orientation in the thermoregulation of the species. We used camera traps to record lizard behaviour at burrow entrances and aligned these measures to measures of Tb. Ttarget was 30 ± 1.4 °C, and Tbs remained within this range for 371 ± 162 min per day. The anterior body-up postures resulted in faster heating and higher Tbs. Lizards heated faster when facing away from the sun and spent proportionally more time in this orientation in the morning when Tbs were lower than Ttarget. Our findings suggest that their wide behavioural repertoire allows Sungazers to thermoregulate effectively over a broad range of environmental conditions and may thus be able to effectively respond to changing climatic conditions.
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Oufiero CE, Van Sant MJ. Variation and repeatability of cutaneous water loss and skin resistance in relation to temperature and diel variation in the lizard Sceloporus consobrinus. J Comp Physiol B 2018; 188:671-681. [PMID: 29619510 DOI: 10.1007/s00360-018-1156-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 03/09/2018] [Accepted: 03/21/2018] [Indexed: 11/24/2022]
Abstract
Variation in rates of water loss has been proposed to be an important mechanism in the survival of terrestrial organisms, as high rates of water loss in desiccating environments may lead to hydric stress and death. Vapor density deficit, the driving force for evaporative water loss, increases exponentially as temperature increases. Acute temperature changes may be the result of daily behavioral thermoregulation of ectotherms, which may influence the among individual variation rates of water loss. The goals of this study were to determine (1) how rates of cutaneous water loss (CWL) and skin resistance (Rs) are affected by acute temperature acclimation, (2) how rates of CWL and Rs vary throughout the day allowing behavioral thermoregulation and (3) the repeatability of CWL and Rs within and among sampling periods. We measured CWL and calculated skin resistance (Rs) of 30 male Sceloporus consobrinus lizards across three summers. We measured CWL on the dorsal and ventral surface of each lizard at 23 °C followed by measurements at 35 °C, and three separate times throughout the day. We found a significant increase in Rs and decrease in CWL at increased acclimation temperatures (35 °C), a significant difference in CWL and Rs throughout the day allowing behavioral thermoregulation, and support for the repeatability of CWL and Rs. Our results demonstrate variability in CWL and Rs in relation to temperature acclimation and thermoregulation, but mixed evidence for repeatability across treatments. Our results suggest other factors, such as peripheral blood flow, may be influencing the inter-individual variation in CWL and Rs.
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Affiliation(s)
| | - Matthew J Van Sant
- Department of Agriculture, Biological and Health Sciences, Cameron University, Lawton, OK, 73505, USA
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18
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Camacho A, Rusch T, Ray G, Telemeco RS, Rodrigues MT, Angilletta MJ. Measuring behavioral thermal tolerance to address hot topics in ecology, evolution, and conservation. J Therm Biol 2018; 73:71-79. [DOI: 10.1016/j.jtherbio.2018.01.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 12/15/2017] [Accepted: 01/21/2018] [Indexed: 12/30/2022]
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Sannolo M, Barroso FM, Carretero MA. Physiological differences in preferred temperatures and evaporative water loss rates in two sympatric lacertid species. ZOOLOGY 2018; 126:58-64. [DOI: 10.1016/j.zool.2017.12.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 12/12/2017] [Accepted: 12/19/2017] [Indexed: 12/01/2022]
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Yuni LPEK, Jones SM, Wapstra E. Thermal biology of the spotted snow skink, Niveoscincus ocellatus, along an altitudinal gradient. AUST J ZOOL 2018. [DOI: 10.1071/zo18014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Body temperatures in ectotherms are strongly affected by their thermal environment. Ectotherms respond to variation in the thermal environment either by modification of behavioural thermoregulation to maintain their optimal body temperature or by shifting their optimal body temperature. In this study, the body temperatures of males of three populations of spotted snow skinks, Niveoscincus ocellatus, living along an altitudinal gradient (low, mid, and high altitude) were studied in the field and laboratory in spring, summer, and autumn, representing the full activity period of this species. The environmental variation across both sites and seasons affected their field active body temperatures. At the low and mid altitude, N. ocellatus had a higher mean body temperature than at the high altitude. Animals achieved their thermal preference at the low and mid altitude sites in all seasons. At the high altitude, however, N. ocellatus struggled to reach its preferred body temperatures, especially in autumn. The lower body temperature at the high-altitude site is likely due to limited thermal opportunity and/or an effect of avoiding the costs associated with increased intensity of basking.
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Camacho A, Rusch TW. Methods and pitfalls of measuring thermal preference and tolerance in lizards. J Therm Biol 2017; 68:63-72. [PMID: 28689723 DOI: 10.1016/j.jtherbio.2017.03.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 03/16/2017] [Accepted: 03/19/2017] [Indexed: 11/28/2022]
Abstract
Understanding methodological and biological sources of bias during the measurement of thermal parameters is essential for the advancement of thermal biology. For more than a century, studies on lizards have deepened our understanding of thermal ecophysiology, employing multiple methods to measure thermal preferences and tolerances. We reviewed 129 articles concerned with measuring preferred body temperature (PBT), voluntary thermal tolerance, and critical temperatures of lizards to offer: a) an overview of the methods used to measure and report these parameters, b) a summary of the methodological and biological factors affecting thermal preference and tolerance, c) recommendations to avoid identified pitfalls, and d) directions for continued progress in our application and understanding of these thermal parameters. We emphasize the need for more methodological and comparative studies. Lastly, we urge researchers to provide more detailed methodological descriptions and suggest ways to make their raw data more informative to increase the utility of thermal biology studies.
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Affiliation(s)
- Agustín Camacho
- Laboratório de Herpetologia, Instituto de Biociências, Universidade de São Paulo, Brazil.
| | - Travis W Rusch
- School of Life Sciences, Arizona State University, Tempe, AZ, USA
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Pafilis P, Lymberakis P, Sagonas K, Valakos E. The particularities of a remote islet shape the thermoregulatory profile of an endemic Mediterranean lizard. J Therm Biol 2016; 61:55-60. [DOI: 10.1016/j.jtherbio.2016.08.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 08/23/2016] [Accepted: 08/23/2016] [Indexed: 11/25/2022]
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23
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Thermal tolerance in the Andean toad Rhinella spinulosa (Anura: Bufonidae) at three sites located along a latitudinal gradient in Chile. J Therm Biol 2016; 60:237-45. [DOI: 10.1016/j.jtherbio.2016.07.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 07/15/2016] [Accepted: 07/18/2016] [Indexed: 11/18/2022]
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24
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Ferreira CC, Santos X, Carretero MA. Does ecophysiology mediate reptile responses to fire regimes? Evidence from Iberian lizards. PeerJ 2016; 4:e2107. [PMID: 27330864 PMCID: PMC4906646 DOI: 10.7717/peerj.2107] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 05/15/2016] [Indexed: 11/20/2022] Open
Abstract
Background. Reptiles are sensitive to habitat disturbance induced by wildfires but species frequently show opposing responses. Functional causes of such variability have been scarcely explored. In the northernmost limit of the Mediterranean bioregion, lizard species of Mediterranean affinity (Psammodromus algirus and Podarcis guadarramae) increase in abundance in burnt areas whereas Atlantic species (Lacerta schreiberi and Podarcis bocagei) decrease. Timon lepidus, the largest Mediterranean lizard in the region, shows mixed responses depending on the locality and fire history. We tested whether such interspecific differences are of a functional nature, namely, if ecophysiological traits may determine lizard response to fire. Based on the variation in habitat structure between burnt and unburnt sites, we hypothesise that Mediterranean species, which increase density in open habitats promoted by frequent fire regimes, should be more thermophile and suffer lower water losses than Atlantic species. Methods. We submitted 6–10 adult males of the five species to standard experiments for assessing preferred body temperatures (Tp) and evaporativewater loss rates (EWL), and examined the variation among species and along time by means of repeated-measures AN(C)OVAs. Results. Results only partially supported our initial expectations, since the medium-sized P. algirus clearly attained higher Tp and lower EWL. The two small wall lizards (P. bocagei and P. guadarramae) displayed low Tp and high EWL while the two large green lizards (T. lepidus and L. schreiberi) displayed intermediate values for both parameters. Discussion. The predicted differences according to the biogeographic affinities within each pair were not fully confirmed. We conclude that ecophysiology may help to understand functional reptile responses to fire but other biological traits are also to be considered.
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Affiliation(s)
- Catarina C Ferreira
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Porto, Portugal; CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto, Vairão, Portugal
| | - Xavier Santos
- CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto , Vairão , Portugal
| | - Miguel A Carretero
- CIBIO Research Centre in Biodiversity and Genetic Resources, InBIO, Universidade do Porto , Vairão , Portugal
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Rato C, Carretero MA. Ecophysiology Tracks Phylogeny and Meets Ecological Models in an Iberian Gecko. Physiol Biochem Zool 2015; 88:564-75. [PMID: 26658252 DOI: 10.1086/682170] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Because fitness of ectotherms, including reptiles, is highly dependent on temperature and water availability, the study of ecophysiological traits, such as preferred temperature (T p) and water loss rates (WLRs), may provide mechanistic evidence on the restricting factors to the species ranges. The Moorish gecko, Tarentola mauritanica, is a species complex with a circum-Mediterranean distribution. In the Iberian Peninsula, two sister parapatric forms of the complex, known as the Iberian and the European clades, are found. Ecological models previously performed using presence records and bioclimatic variables suggest niche divergence between both lineages correlated with precipitation rather than with temperature. In this study, we test this correlative hypothesis using ecophysiological evidence. In the laboratory, we analyzed the T p and WLRs for 84 adult males from seven distinct populations ascribed to one of the two lineages present in Iberia. Specifically, we evaluated the existence of trait conservatism versus adaptation among populations, lineages, or both. In addition, we tested for a trade-off between water and thermal traits and assessed whether climate regime of sampling localities had any influence on the ecophysiological patterns found. We found that T p is quite conserved at both the population and lineage levels and independent from body size. In contrast, water loss experiments revealed some variation among populations, but the regression analysis failed to detect correlation between T p and WLR at any level. Overall, the European lineage displayed a trend for higher water loss and was more diverse among populations when compared with the Iberian lineage. The lack of correspondence between ecophysiological traits and local climatic conditions favors phylogenetic signal versus adaptation. This suggests divergent evolutionary responses to the environment, mainly acting on water ecology, in both lineages, which may account for the differences in their range expansion.
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Affiliation(s)
- C Rato
- Centro de Investigação em Biodiversidade e Recursos Genéticos Research Centre in Biodiversity and Genetic Resources, Rede de Investigação em Biodiversidade e Biologia Evolutiva, Universidade do Porto, Campus Agrário de Vairão, 4485-661 Vairão, Vila do Conde, Portugal
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Lara-Reséndiz RA, Arenas-Moreno DM, Beltrán-Sánchez E, Gramajo W, Verdugo-Molina J, Sherbrooke WC, Méndez-De la Cruz FR. Selected body temperature of nine species of Mexican horned lizards (Phrynosoma). REV MEX BIODIVERS 2015. [DOI: 10.7550/rmb.48028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Killen SS. Growth trajectory influences temperature preference in fish through an effect on metabolic rate. J Anim Ecol 2014; 83:1513-22. [PMID: 24806155 PMCID: PMC4277333 DOI: 10.1111/1365-2656.12244] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 04/15/2014] [Indexed: 11/30/2022]
Abstract
Most animals experience temperature variations as they move through the environment. For ectotherms, in particular, temperature has a strong influence on habitat choice. While well studied at the species level, less is known about factors affecting the preferred temperature of individuals; especially lacking is information on how physiological traits are linked to thermal preference and whether such relationships are affected by factors such feeding history and growth trajectory.
This study examined these issues in the common minnow Phoxinus phoxinus, to determine the extent to which feeding history, standard metabolic rate (SMR) and aerobic scope (AS), interact to affect temperature preference.
Individuals were either: 1) food deprived (FD) for 21 days, then fed ad libitum for the next 74 days; or 2) fed ad libitum throughout the entire period. All animals were then allowed to select preferred temperatures using a shuttle-box, and then measured for SMR and AS at 10 °C, estimated by rates of oxygen uptake. Activity within the shuttle-box under a constant temperature regime was also measured.
In both FD and control fish, SMR was negatively correlated with preferred temperature. The SMR of the FD fish was increased compared with the controls, probably due to the effects of compensatory growth, and so these growth-compensated fish preferred temperatures that were on average 2·85 °C cooler than controls fed a maintenance ration throughout the study. Fish experiencing compensatory growth also displayed a large reduction in activity. In growth-compensated fish and controls, activity measured at 10 °C was positively correlated with preferred temperature.
Individual fish prefer temperatures that vary predictably with SMR and activity level, which are both plastic in response to feeding history and growth trajectories. Cooler temperatures probably allow individuals to reduce maintenance costs and divert more energy towards growth. A reduction in SMR at cooler temperatures, coupled with a decrease in spontaneous activity, could also allow individuals to increase surplus AS for coping with environmental stressors. In warming climates, however, aquatic ectotherms could experience frequent fluctuations in food supply with long-lasting effects on metabolic rate due to compensatory growth, while simultaneously having limited access to preferred cooler habitats.
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Affiliation(s)
- Shaun S Killen
- Institute of Biodiversity, Animal Health & Comparative Medicine, Graham Kerr Building, College of Medical, Veterinary & Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
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Broeckhoven C, Mouton PLFN. Under pressure: morphological and ecological correlates of bite force in the rock-dwelling lizardsOuroborus cataphractusandKarusasaurus polyzonus(Squamata: Cordylidae). Biol J Linn Soc Lond 2014. [DOI: 10.1111/bij.12242] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chris Broeckhoven
- Department of Botany & Zoology; Stellenbosch University; Private Bag X1 Matieland 7602 Stellenbosch South Africa
| | - P. le Fras N. Mouton
- Department of Botany & Zoology; Stellenbosch University; Private Bag X1 Matieland 7602 Stellenbosch South Africa
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30
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Osojnik N, Žagar A, Carretero MA, García-Muñoz E, Vrezec A. Ecophysiological Dissimilarities of Two Sympatric Lizards. HERPETOLOGICA 2013. [DOI: 10.1655/herpetologica-d-13-00014] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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31
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Clusella-Trullas S, Chown SL. Lizard thermal trait variation at multiple scales: a review. J Comp Physiol B 2013; 184:5-21. [DOI: 10.1007/s00360-013-0776-x] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 08/05/2013] [Accepted: 08/13/2013] [Indexed: 10/26/2022]
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32
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Broeckhoven C, Mouton PLFN. Influence of diet on prehension mode in cordylid lizards: a morphological and kinematic analysis. J Zool (1987) 2013. [DOI: 10.1111/jzo.12075] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. Broeckhoven
- Department of Botany and Zoology; Stellenbosch University; Matieland South Africa
| | - P. le F. N. Mouton
- Department of Botany and Zoology; Stellenbosch University; Matieland South Africa
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Artacho P, Jouanneau I, Le Galliard JF. Interindividual Variation in Thermal Sensitivity of Maximal Sprint Speed, Thermal Behavior, and Resting Metabolic Rate in a Lizard. Physiol Biochem Zool 2013; 86:458-69. [DOI: 10.1086/671376] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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34
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Sagonas K, Meiri S, Valakos ED, Pafilis P. The effect of body size on the thermoregulation of lizards on hot, dry Mediterranean islands. J Therm Biol 2013. [DOI: 10.1016/j.jtherbio.2012.11.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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35
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Merritt L, Matthews PGD, White CR. Performance correlates of resting metabolic rate in garden skinks Lampropholis delicata. J Comp Physiol B 2013; 183:663-73. [DOI: 10.1007/s00360-012-0736-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Revised: 11/15/2012] [Accepted: 12/04/2012] [Indexed: 11/29/2022]
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36
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Yue F, Tang XL, Zhang DJ, Yan XF, Xin Y, Chen Q. Body temperature and standard metabolic rate of the female viviparous lizard Eremias multiocellata during reproduction. CAN J ZOOL 2012. [DOI: 10.1139/z11-116] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The body temperature (Tb) and standard metabolic rate (SMR) of female Eremias multiocellata Günther, 1872, a viviparous lizard, were measured at 25, 30, and 35 °C during pregnancy and after parturition to assess energy requirement of reproduction. The results showed that the Tbs of female lizards were slightly higher than actual ambient temperature in the 25 and 30 °C groups, while they were slightly lower than ambient temperature in the 35 °C group. Ambient temperature significantly affected SMR and gestation period of females. Energy requirement was constant in nonpregnant females, whereas it was increased in pregnant females. The maximal estimates of maintenance costs of pregnancy (MCP) were 4.219, 4.220, and 4.448 mg CO2·min–1, which accounted for 19.40%, 14.15%, and 12.32% of the total metabolic rate in the 25, 30, and 35 °C group, respectively. The results indicated the MCP was an important component of total energy cost for the lizard E. multiocellata and the MCP in this lizard incurs a relative fixed energetic cost irrespective of ambient temperature.
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Affiliation(s)
- Feng Yue
- Institute of Biochemistry and Molecular Biology, School of Life Science, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, Gansu, China
| | - Xiao-Long Tang
- Institute of Biochemistry and Molecular Biology, School of Life Science, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, Gansu, China
| | - De-Jiu Zhang
- Institute of Biochemistry and Molecular Biology, School of Life Science, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, Gansu, China
| | - Xue-Feng Yan
- Institute of Biochemistry and Molecular Biology, School of Life Science, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, Gansu, China
| | - Ying Xin
- Institute of Biochemistry and Molecular Biology, School of Life Science, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, Gansu, China
| | - Qiang Chen
- Institute of Biochemistry and Molecular Biology, School of Life Science, Lanzhou University, 222 Tianshui South Road, Lanzhou 730000, Gansu, China
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Clusella‐Trullas S, Terblanche J, Chown S. Phenotypic Plasticity of Locomotion Performance in the Seed HarvesterMessor capensis(Formicidae). Physiol Biochem Zool 2010; 83:519-30. [DOI: 10.1086/651387] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Clusella-Trullas S, Wyk JH, Spotila JR. Thermal benefits of melanism in cordylid lizards: a theoretical and field test. Ecology 2009; 90:2297-312. [DOI: 10.1890/08-1502.1] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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39
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Clusella-Trullas S, Terblanche JS, Blackburn TM, Chown SL. Testing the thermal melanism hypothesis: a macrophysiological approach. Funct Ecol 2008. [DOI: 10.1111/j.1365-2435.2007.01377.x] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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