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Ruthsatz K, Dahlke F, Alter K, Wohlrab S, Eterovick PC, Lyra ML, Gippner S, Cooke SJ, Peck MA. Acclimation capacity to global warming of amphibians and freshwater fishes: Drivers, patterns, and data limitations. GLOBAL CHANGE BIOLOGY 2024; 30:e17318. [PMID: 38771091 DOI: 10.1111/gcb.17318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 04/17/2024] [Accepted: 04/26/2024] [Indexed: 05/22/2024]
Abstract
Amphibians and fishes play a central role in shaping the structure and function of freshwater environments. These organisms have a limited capacity to disperse across different habitats and the thermal buffer offered by freshwater systems is small. Understanding determinants and patterns of their physiological sensitivity across life history is, therefore, imperative to predicting the impacts of climate change in freshwater systems. Based on a systematic literature review including 345 experiments with 998 estimates on 96 amphibian (Anura/Caudata) and 93 freshwater fish species (Teleostei), we conducted a quantitative synthesis to explore phylogenetic, ontogenetic, and biogeographic (thermal adaptation) patterns in upper thermal tolerance (CTmax) and thermal acclimation capacity (acclimation response ratio, ARR) as well as the influence of the methodology used to assess these thermal traits using a conditional inference tree analysis. We found globally consistent patterns in CTmax and ARR, with phylogeny (taxa/order), experimental methodology, climatic origin, and life stage as significant determinants of thermal traits. The analysis demonstrated that CTmax does not primarily depend on the climatic origin but on experimental acclimation temperature and duration, and life stage. Higher acclimation temperatures and longer acclimation times led to higher CTmax values, whereby Anuran larvae revealed a higher CTmax than older life stages. The ARR of freshwater fishes was more than twice that of amphibians. Differences in ARR between life stages were not significant. In addition to phylogenetic differences, we found that ARR also depended on acclimation duration, ramping rate, and adaptation to local temperature variability. However, the amount of data on early life stages is too small, methodologically inconsistent, and phylogenetically unbalanced to identify potential life cycle bottlenecks in thermal traits. We, therefore, propose methods to improve the robustness and comparability of CTmax/ARR data across species and life stages, which is crucial for the conservation of freshwater biodiversity under climate change.
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Affiliation(s)
- Katharina Ruthsatz
- Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany
- Institute of Animal Cell and Systems Biology, Universität Hamburg, Hamburg, Germany
| | - Flemming Dahlke
- Ecology of Living Marine Resources, Universität Hamburg, Hamburg, Germany
| | - Katharina Alter
- Department of Coastal Systems, Royal Netherlands Institute for Sea Research, Den Burg, The Netherlands
| | - Sylke Wohlrab
- Alfred Wegner Institute Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB), Oldenburg, Germany
| | - Paula C Eterovick
- Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany
| | - Mariana L Lyra
- New York University Abu Dhabi, Abu Dhabi, United Arab Emirates
- Center for Research on Biodiversity Dynamics and Climate Change, State University of São Paulo-UNESP, Rio Claro, Brazil
| | - Sven Gippner
- Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany
| | - Steven J Cooke
- Fish Ecology and Conservation Physiology Laboratory, Department of Biology and Institute of Environmental and Interdisciplinary Science, Carleton University, Ottawa, Ontario, Canada
| | - Myron A Peck
- Department of Coastal Systems, Royal Netherlands Institute for Sea Research, Den Burg, The Netherlands
- Marine Animal Ecology Group, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands
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2
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Vidal MA, Rezende EL, Bacigalupe LD. Intra and interspecific variation in thermal performance and critical limits in anurans from southern Chile. J Therm Biol 2024; 121:103851. [PMID: 38615494 DOI: 10.1016/j.jtherbio.2024.103851] [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] [Received: 09/22/2023] [Revised: 03/19/2024] [Accepted: 03/19/2024] [Indexed: 04/16/2024]
Abstract
The relationship between temperature and performance can be illustrated through a thermal performance curve (TPC), which has proven useful in describing various aspects of ectotherms' thermal ecology and evolution. The parameters of the TPC can vary geographically due to large-scale variations in environmental conditions. However, only some studies have attempted to quantify how thermal performance varies over relatively small spatial scales, even in the same location or consistently among individuals within a species. Here, we quantified individual and species variation in thermal sensitivity of locomotor performance in five amphibia Eupsophus species found in the temperate rainforests of southern Chile and compared their estimates against co-occurring species that exhibit a substantially more extensive distributional range. We measured critical thermal limits and jumping performance under five different temperatures. Our results suggest that thermal responses are relatively conserved along the phylogeny, as the locomotor performance and thermal windows for activity remained narrow in Eupsophus species when compared against results observed for Batrachyla taeniata and Rhinella spinulosa. Additionally, we found significant individual differences in locomotor performance within most species, with individual consistency in performance observed across varied temperatures. Further analyses explored the influence of body size on locomotor performance and critical thermal limits within and between species. Our results suggest a trade-off scenario between thermal tolerance breadth and locomotor performance, where species exhibiting broader thermal ranges might have compromised performance. Interestingly, these traits seem partly mediated by body size variations, raising questions about potential ecological implications.
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Affiliation(s)
- Marcela A Vidal
- Center of Ñuble Studies, Biodiversity and Global Change Research Group, Departament of Basic Sciences, Faculty of Sciences, Bío-Bío University, Av. Andrés Bello 720, Chillán, Chile.
| | - Enrico L Rezende
- Department of Ecology, Center od Applied Ecology and Sustainability (CAPES), Faculty of Biological Sciences, Pontifical Catholic University of Chile, Santiago, 6513677, Chile
| | - Leonardo D Bacigalupe
- Institute of Environmental and Evolutionary Sciences, Austral University of Chile, Valdivia, Chile
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3
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Fernandes JF, Calado R, Jerónimo D, Madeira D. Thermal tolerance limits and physiological traits as indicators of Hediste diversicolor's acclimation capacity to global and local change drivers. J Therm Biol 2023; 114:103577. [PMID: 37263039 DOI: 10.1016/j.jtherbio.2023.103577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 04/08/2023] [Accepted: 04/15/2023] [Indexed: 06/03/2023]
Abstract
Global projections predict significant increases in ocean temperature and changes in ocean chemistry, including salinity variations by 2100. This has led to a substantial interest in the study of thermal ecophysiology, as temperature is a major factor shaping marine ectotherm communities. However, responses to temperature may be influenced by other factors such as salinity, highlighting the relevance of multiple stressor studies. In the present work, we experimentally evaluated the thermal tolerance of the marine ragworm Hediste diversicolor under predicted global change scenarios. Organisms were subjected to an experimental trial under control (24 °C), and two temperature treatment scenarios (ocean warming +3 °C - (27 °C) and heat wave +6 °C - (30 °C)), combined with salinity variations (20 and 30) in a full factorial design for 29 days. Environmental data from the field were collected during 2019 and 2020. At day 30 post exposure, upper thermal limits (Critical Thermal Maximum - CTMax), thermal safety margins (TSM) and acclimation capacity were measured. Higher acclimation temperatures led to higher thermal tolerance limits, confirming that H. diversicolor features some physiological plasticity, acclimation capacity and a positive thermal safety margin. This margin was greater considering in situ temperature data from 2019 than maximum temperatures for 2020 (CTMax > maximum habitat temperature-MHT). Moreover, smaller organisms displayed higher upper thermal limits suggesting that thermal tolerance is size dependent. Ragworms subjected to higher salinity also showed a higher CTMax than those acclimated to lower salinity. However, temperature and salinity showed an additive effect on CTMax, as no significant interaction was detected. We conclude that H. diversicolor can easily acclimate to increased water temperature, independently of salinity variations. Given the key role of ragworms in food webs in estuaries and coastal lagoons, substrate bioturbation and aquaculture, this information is relevant to support conservation actions, optimize culture protocols and identify thermal resistant strains.
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Affiliation(s)
- Joana Filipa Fernandes
- ECOMARE - Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada do Porto de Pesca Costeira, 3830-565, Gafanha da Nazaré, Portugal.
| | - Ricardo Calado
- ECOMARE - Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada do Porto de Pesca Costeira, 3830-565, Gafanha da Nazaré, Portugal
| | - Daniel Jerónimo
- ECOMARE - Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada do Porto de Pesca Costeira, 3830-565, Gafanha da Nazaré, Portugal
| | - Diana Madeira
- ECOMARE - Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada do Porto de Pesca Costeira, 3830-565, Gafanha da Nazaré, Portugal; UCIBIO, Applied Molecular Biosciences Unit, Department of Chemistry, Faculty of Sciences and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal.
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4
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Abstract
Rising temperatures represent a significant threat to the survival of ectothermic animals. As such, upper thermal limits represent an important trait to assess the vulnerability of ectotherms to changing temperatures. For instance, one may use upper thermal limits to estimate current and future thermal safety margins (i.e., the proximity of upper thermal limits to experienced temperatures), use this trait together with other physiological traits in species distribution models, or investigate the plasticity and evolvability of these limits for buffering the impacts of changing temperatures. While datasets on thermal tolerance limits have been previously compiled, they sometimes report single estimates for a given species, do not present measures of data dispersion, and are biased towards certain parts of the globe. To overcome these limitations, we systematically searched the literature in seven languages to produce the most comprehensive dataset to date on amphibian upper thermal limits, spanning 3,095 estimates across 616 species. This resource will represent a useful tool to evaluate the vulnerability of amphibians, and ectotherms more generally, to changing temperatures.
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Clifton IT, Refsnider JM. Temporal climatic variability predicts thermal tolerance in two sympatric lizard species. J Therm Biol 2022; 108:103291. [DOI: 10.1016/j.jtherbio.2022.103291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 05/31/2022] [Accepted: 06/29/2022] [Indexed: 10/17/2022]
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Turriago JL, Tejedo M, Hoyos JM, Bernal MH. The effect of thermal microenvironment in upper thermal tolerance plasticity in tropical tadpoles. Implications for vulnerability to climate warming. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 2022; 337:746-759. [PMID: 35674344 DOI: 10.1002/jez.2632] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 04/09/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
Current climate change is generating accelerated increase in extreme heat events and organismal plastic adjustments in upper thermal tolerances, (critical thermal maximum -CTmax ) are recognized as the quicker mitigating mechanisms. However, current research casts doubt on the actual mitigating role of thermal acclimation to face heat impacts, due to its low magnitude and weak environmental signal. Here, we examined these drawbacks by first estimating maximum extent of thermal acclimation by examining known sources of variation affecting CTmax expression, such as daily thermal fluctuation and heating rates. Second, we examined whether the magnitude and pattern of CTmax plasticity is dependent of the thermal environment by comparing the acclimation responses of six species of tropical amphibian tadpoles inhabiting thermally contrasting open and shade habitats and, finally, estimating their warming tolerances (WT = CTmax - maximum temperatures) as estimator of heating risk. We found that plastic CTmax responses are improved in tadpoles exposed to fluctuating daily regimens. Slow heating rates implying longer duration assays determined a contrasting pattern in CTmax plastic expression, depending on species environment. Shade habitat species suffer a decline in CTmax whereas open habitat tadpoles greatly increase it, suggesting an adaptive differential ability of hot exposed species to quick hardening adjustments. Open habitat tadpoles although overall acclimate more than shade habitat species, cannot capitalize this beneficial increase in CTmax, because the maximum ambient temperatures are very close to their critical limits, and this increase may not be large enough to reduce acute heat stress under the ongoing global warming.
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Affiliation(s)
- Jorge L Turriago
- Department of Biology, Grupo de Herpetología, Eco-Fisiología & Etología, Universidad del Tolima, Tolima, Colombia
- Programa de Doctorado en Ciencias Biológicas, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Miguel Tejedo
- Department of Evolutionary Ecology, Estación Biológica de Doñana, CSIC, Sevilla, Spain
| | - Julio M Hoyos
- Department of Biology, Grupo UNESIS, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Manuel H Bernal
- Department of Biology, Grupo de Herpetología, Eco-Fisiología & Etología, Universidad del Tolima, Tolima, Colombia
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Sinai N, Glos J, Mohan AV, Lyra ML, Riepe M, Thöle E, Zummach C, Ruthsatz K. Developmental plasticity in amphibian larvae across the world: Investigating the roles of temperature and latitude. J Therm Biol 2022; 106:103233. [DOI: 10.1016/j.jtherbio.2022.103233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 02/23/2022] [Accepted: 03/26/2022] [Indexed: 01/04/2023]
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8
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Manríquez N, Bacigalupe LD, Lardies MA. Variable Environments in an Upwelling System Trigger Differential Thermal Sensitivity in a Low Intertidal Chiton. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.753486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Environmental variability in coastal oceans associated with upwelling dynamics probably is one of the most pervasive forces affecting the physiological performance of marine life. As the environmental temperature is the abiotic factor with major incidence in the physiology and ecology of marine ectotherms, the abrupt temperature changes in upwelling systems could generate important variations in these organisms’ functional processes. The relationship between ambient temperature and physiological performance can be described through a thermal performance curve (TPC). The parameters of this curve usually show geographic variation usually is in accordance with the predictions of the climate variability hypothesis (CVH), which states that organisms inhabiting more variable environments should have broader ranges of environmental tolerance in order to cope with the fluctuating environmental conditions they experience. Here we study the effect generated by the environmental variability in an active upwelling zone on the physiological performance of the marine ectotherm Achanthopleura echinata. In particular, we compared the parameters of the TPC and the metabolic rate of two populations of A. echinata, one found in high semi-permanent upwelling (Talcaruca), while the other is situated in an adjacent area with seasonal upwelling (Los Molles) and therefore more stable environmental conditions. Our results show that: (1) oxygen consumption increases with body size and this effect is more significant in individuals from the Talcaruca population, (2) optimal temperature, thermal breadth, upper critical limit and maximum performance were higher in the population located in the area of high environmental heterogeneity and (3) individuals from Talcaruca showed greater variance in optimal temperature, thermal breadth, upper critical limit but not in maximum performance. Although it is clear that a variable environment affects the thermal physiology of organisms, expanding their tolerance ranges and generating energy costs in the performance of individuals, it is relevant to note that upwelling systems are multifactorial phenomena where the rise of water masses modifies not only temperature, but also decreases O2, pH, and increases pCO2 which in turn could modify metabolism and TPC.
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9
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Barley JM, Cheng BS, Sasaki M, Gignoux-Wolfsohn S, Hays CG, Putnam AB, Sheth S, Villeneuve AR, Kelly M. Limited plasticity in thermally tolerant ectotherm populations: evidence for a trade-off. Proc Biol Sci 2021; 288:20210765. [PMID: 34493077 PMCID: PMC8424342 DOI: 10.1098/rspb.2021.0765] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/13/2021] [Indexed: 12/11/2022] Open
Abstract
Many species face extinction risks owing to climate change, and there is an urgent need to identify which species' populations will be most vulnerable. Plasticity in heat tolerance, which includes acclimation or hardening, occurs when prior exposure to a warmer temperature changes an organism's upper thermal limit. The capacity for thermal acclimation could provide protection against warming, but prior work has found few generalizable patterns to explain variation in this trait. Here, we report the results of, to our knowledge, the first meta-analysis to examine within-species variation in thermal plasticity, using results from 20 studies (19 species) that quantified thermal acclimation capacities across 78 populations. We used meta-regression to evaluate two leading hypotheses. The climate variability hypothesis predicts that populations from more thermally variable habitats will have greater plasticity, while the trade-off hypothesis predicts that populations with the lowest heat tolerance will have the greatest plasticity. Our analysis indicates strong support for the trade-off hypothesis because populations with greater thermal tolerance had reduced plasticity. These results advance our understanding of variation in populations' susceptibility to climate change and imply that populations with the highest thermal tolerance may have limited phenotypic plasticity to adjust to ongoing climate warming.
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Affiliation(s)
- Jordanna M. Barley
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Brian S. Cheng
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Matthew Sasaki
- Department of Marine Sciences, University of Connecticut, Groton, CT 06340, USA
| | | | - Cynthia G. Hays
- Department of Biology, Keene State College, Keene, NH 03435, USA
| | - Alysha B. Putnam
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Seema Sheth
- Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC 27695, USA
| | - Andrew R. Villeneuve
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
| | - Morgan Kelly
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
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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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11
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Villeneuve AR, Komoroske LM, Cheng BS. Diminished warming tolerance and plasticity in low-latitude populations of a marine gastropod. CONSERVATION PHYSIOLOGY 2021; 9:coab039. [PMID: 34136259 PMCID: PMC8201192 DOI: 10.1093/conphys/coab039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 02/08/2021] [Accepted: 05/13/2021] [Indexed: 05/25/2023]
Abstract
Models of species response to climate change often assume that physiological traits are invariant across populations. Neglecting potential intraspecific variation may overlook the possibility that some populations are more resilient or susceptible than others, creating inaccurate predictions of climate impacts. In addition, phenotypic plasticity can contribute to trait variation and may mediate sensitivity to climate. Quantifying such forms of intraspecific variation can improve our understanding of how climate can affect ecologically important species, such as invasive predators. Here, we quantified thermal performance (tolerance, acclimation capacity, developmental traits) across seven populations of the predatory marine snail (Urosalpinx cinerea) from native Atlantic and non-native Pacific coast populations in the USA. Using common garden experiments, we assessed the effects of source population and developmental acclimation on thermal tolerance and developmental traits of F1 snails. We then estimated climate sensitivity by calculating warming tolerance (thermal tolerance - habitat temperature), using field environmental data. We report that low-latitude populations had greater thermal tolerance than their high latitude counterparts. However, these same low-latitude populations exhibited decreased thermal tolerance when exposed to environmentally realistic higher acclimation temperatures. Low-latitude native populations had the greatest climate sensitivity (habitat temperatures near thermal limits). In contrast, invasive Pacific snails had the lowest climate sensitivity, suggesting that these populations are likely to persist and drive negative impacts on native biodiversity. Developmental rate significantly increased in embryos sourced from populations with greater habitat temperature but had variable effects on clutch size and hatching success. Thus, warming can produce widely divergent responses within the same species, resulting in enhanced impacts in the non-native range and extirpation in the native range. Broadly, our results highlight how intraspecific variation can alter management decisions, as this may clarify whether management efforts should be focused on many or only a few populations.
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Affiliation(s)
- Andrew R Villeneuve
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
- Gloucester Marine Station, University of Massachusetts Amherst, Gloucester, MA 01930, USA
| | - Lisa M Komoroske
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
- Gloucester Marine Station, University of Massachusetts Amherst, Gloucester, MA 01930, USA
| | - Brian S Cheng
- Department of Environmental Conservation, University of Massachusetts Amherst, Amherst, MA 01003, USA
- Gloucester Marine Station, University of Massachusetts Amherst, Gloucester, MA 01930, USA
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Madeira D, Fernandes JF, Jerónimo D, Ricardo F, Santos A, Domingues MR, Calado R. Calcium homeostasis and stable fatty acid composition underpin heatwave tolerance of the keystone polychaete Hediste diversicolor. ENVIRONMENTAL RESEARCH 2021; 195:110885. [PMID: 33609552 DOI: 10.1016/j.envres.2021.110885] [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: 01/05/2021] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
Extreme weather events, such as heatwaves, are becoming increasingly frequent, long-lasting and severe as global climate change continues, shaping marine biodiversity patterns worldwide. Increased risk of overheating and mortality across major taxa have been recurrently observed, jeopardizing the sustainability of ecosystem services. Molecular responses of species, which scale up to physiological and population responses, are determinant processes that modulate species sensitivity or tolerance to extreme weather events. Here, by integrating proteomic, fatty acid profiling and physiological approaches, we show that the tolerance of the intertidal ragworm Hediste diversicolor, a keystone species in estuarine ecosystems and an emergent blue bio-resource, to long-lasting heatwaves (24 vs 30 °C for 30 days) is shaped by calcium homeostasis, immune function and stability of fatty acid profiles. These features potentially enabled H. diversicolor to increase its thermal tolerance limit by 0.81 °C under the heatwave scenario and maintain survival. No growth trade-offs were detected, as wet weight remained stable across conditions. Biological variation of physiological parameters was lower when compared to molecular measures. Proteins showed an overall elevated coefficient of variation, although decreasing molecular variance under the heatwave scenario was observed for both proteins and fatty acids. This finding is consistent with the phenomenon of physiological canalization in extreme environments and contradicts the theory that novel conditions increase trait variation. Our results show that keystone highly valued marine polychaetes are tolerant to heatwaves, confirming the potential of H. diversicolor as a blue bio-resource and opening new avenues for sustainable marine aquaculture development.
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Affiliation(s)
- Diana Madeira
- ECOMARE-Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM-Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada Do Porto de Pesca Costeira, 3830-565, Gafanha da Nazaré, Portugal; UCIBIO, REQUIMTE, Department of Chemistry, Faculty of Science and Technology, NOVA University of Lisbon, 2829-516, Caparica, Portugal; University of Quebec in Rimouski (UQAR), Department of Biology, Chemistry and Geography, 300 Allée des Ursulines, Rimouski, QC, G5L 3A1, Canada.
| | - Joana Filipa Fernandes
- ECOMARE-Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM-Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada Do Porto de Pesca Costeira, 3830-565, Gafanha da Nazaré, Portugal
| | - Daniel Jerónimo
- ECOMARE-Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM-Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada Do Porto de Pesca Costeira, 3830-565, Gafanha da Nazaré, Portugal
| | - Fernando Ricardo
- ECOMARE-Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM-Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada Do Porto de Pesca Costeira, 3830-565, Gafanha da Nazaré, Portugal
| | - Andreia Santos
- ECOMARE-Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM-Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada Do Porto de Pesca Costeira, 3830-565, Gafanha da Nazaré, Portugal
| | - Maria Rosário Domingues
- Mass Spectrometry Centre, LAQV REQUIMTE, Department of Chemistry, University of Aveiro, Santiago University Campus, 3810-193, Aveiro, Portugal; ECOMARE-Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM-Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Santiago University Campus, 3810-193, Aveiro, Portugal
| | - Ricardo Calado
- ECOMARE-Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM-Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada Do Porto de Pesca Costeira, 3830-565, Gafanha da Nazaré, Portugal.
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13
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Wu J. The hazard and unsureness of reducing habitat ranges in response to climate warming for 91 amphibian species in China. ACTA OECOLOGICA 2020. [DOI: 10.1016/j.actao.2020.103640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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14
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Bodensteiner BL, Agudelo‐Cantero GA, Arietta AZA, Gunderson AR, Muñoz MM, Refsnider JM, Gangloff EJ. Thermal adaptation revisited: How conserved are thermal traits of reptiles and amphibians? JOURNAL OF EXPERIMENTAL ZOOLOGY PART 2020; 335:173-194. [DOI: 10.1002/jez.2414] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/17/2020] [Accepted: 09/04/2020] [Indexed: 12/31/2022]
Affiliation(s)
- Brooke L. Bodensteiner
- Department of Ecology and Evolutionary Biology Yale University New Haven Connecticut USA
| | - Gustavo A. Agudelo‐Cantero
- Department of Physiology, Institute of Biosciences University of São Paulo São Paulo Brazil
- Department of Biology ‐ Genetics, Ecology, and Evolution Aarhus University Aarhus Denmark
| | | | - Alex R. Gunderson
- Department of Ecology and Evolutionary Biology Tulane University New Orleans Louisiana USA
| | - Martha M. Muñoz
- Department of Ecology and Evolutionary Biology Yale University New Haven Connecticut USA
| | | | - Eric J. Gangloff
- Department of Zoology Ohio Wesleyan University Delaware Ohio USA
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15
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Vidal MA, Barría-Oyarzo I, Contreras C, Bacigalupe LD. Geography, Temperature, and Water: Interaction Effects in a Small Native Amphibian. Physiol Biochem Zool 2020; 93:369-375. [PMID: 32762608 DOI: 10.1086/710537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Amphibian locomotor capacity is strongly linked to temperature and hydration. However, organisms in nature experience covariation of multiple environmental factors, and thus to better understand the effects of thermal and hydric conditions on physiological performance, it is critical not only to experimentally disentangle them but also to incorporate potential interactive effects due to geographic variation. To this end, we selected two populations of the small amphibian Pleurodema thaul inhabiting highly contrasting temperatures and precipitation regimens. With these two populations, we evaluated the thermal and hydric sensitivities of locomotor performance. For both factors, performance increased with temperature as well as with hydration level, although performance reached a plateau between 25° and 30°C. In addition, the influence of dehydration on performance was independent of the temperature at which it was tested. Our results also showed that the population from the warmer environment has lower sensitivity of locomotor performance to dehydration, probably as a consequence of thermal adaptation, although further studies might be required to fully understand this.
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16
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Barria AM, Zamorano D, Parada A, Labra FA, Estay SA, Bacigalupe LD. The Importance of Intraspecific Variation for Niche Differentiation and Species Distribution Models: The Ecologically Diverse Frog Pleurodema thaul as Study Case. Evol Biol 2020. [DOI: 10.1007/s11692-020-09510-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Vicenzi N, Laspiur A, Sassi PL, Massarelli R, Krenz J, Ibargüengoytía NR. Impact of temperature on bite force and bite endurance in the leopard iguana ( Diplolaemus leopardinus) in the Andes Mountains. J Exp Biol 2020; 223:jeb221382. [PMID: 32366690 DOI: 10.1242/jeb.221382] [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: 01/08/2020] [Accepted: 04/28/2020] [Indexed: 08/26/2023]
Abstract
In ectotherms, temperature exerts a strong influence on the performance of physiological and ecological traits. One approach to understanding the impact of rising temperatures on animals and their ability to cope with climate change is to quantify variation in thermal-sensitive traits. Here, we examined the thermal biology, temperature dependence and thermal plasticity of bite force (endurance and magnitude) in Diplolaemus leopardinus, an aggressive and territorial lizard endemic to Mendoza province, Argentina. Our results indicate that this lizard behaves like a moderate thermoregulator that uses the rocks of its environment as the main heat source. Bite endurance was not influenced by head morphometry and body temperature, whereas bite force was influenced by head length and jaw length, and exhibited thermal dependence. Before thermal acclimation treatments, the maximum bite force for D. leopardinus occurred at the lowest body temperature and fell sharply with increasing body temperature. After acclimation treatments, lizards acclimated at higher temperatures exhibited greater bite force. Bite force showed phenotypic plasticity, which reveals that leopard iguanas are able to maintain (and even improve) their bite force under a rising-temperature scenario.
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Affiliation(s)
- Nadia Vicenzi
- Instituto Argentino de Investigaciones en Zonas Áridas. Consejo Nacional de Investigaciones Científicas y Técnicas (IADIZA-CONICET), Av. Ruiz Leal s/n, Ciudad de Mendoza 5500, Argentina
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre Contreras 1300, Mendoza 5500, Argentina
| | - Alejandro Laspiur
- Instituto de Investigaciones en Biodiversidad y Medioambiente. Consejo Nacional de Investigaciones Científicas y Técnicas (INIBIOMA-CONICET), Quintral 1250, Río Negro 8400, Argentina
- Escuela Universitaria de Ciencias de la Salud (EUCS), Universidad Nacional de San Juan, Rawson 1850, San Juan 5419, Argentina
| | - Paola L Sassi
- Instituto Argentino de Investigaciones en Zonas Áridas. Consejo Nacional de Investigaciones Científicas y Técnicas (IADIZA-CONICET), Av. Ruiz Leal s/n, Ciudad de Mendoza 5500, Argentina
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre Contreras 1300, Mendoza 5500, Argentina
| | - Rubén Massarelli
- Dirección de Recursos Naturales Renovables, Secretaría de Ambiente y Ordenamiento Territorial, Av. L. Peltier 351, Ciudad de Mendoza 5500, Argentina
| | - John Krenz
- Department of Biological Sciences, Minnesota State University, Mankato, MN 56001, USA
| | - Nora R Ibargüengoytía
- Instituto de Investigaciones en Biodiversidad y Medioambiente. Consejo Nacional de Investigaciones Científicas y Técnicas (INIBIOMA-CONICET), Quintral 1250, Río Negro 8400, Argentina
- Departamento de Zoología, Centro Regional Universitario Bariloche, Universidad del Comahue, Quintral 1250, Río Negro 8400, Argentina
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18
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Wang Y, Stoks R, Sentis A, Tüzün N. Support for the climatic variability hypothesis depends on the type of thermal plasticity: lessons from predation rates. OIKOS 2020. [DOI: 10.1111/oik.07181] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ying‐Jie Wang
- Evolutionary Stress Ecology and Ecotoxicology, Univ. of Leuven Debériotstraat 32 BE‐3000 Leuven Belgium
| | - Robby Stoks
- Evolutionary Stress Ecology and Ecotoxicology, Univ. of Leuven Debériotstraat 32 BE‐3000 Leuven Belgium
| | - Arnaud Sentis
- INRAE, Univ. of Aix Marseille, UMR RECOVER Aix‐en‐Provence France
| | - Nedim Tüzün
- Evolutionary Stress Ecology and Ecotoxicology, Univ. of Leuven Debériotstraat 32 BE‐3000 Leuven Belgium
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19
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Taucare-Ríos A, Veloso C, Canals M, Bustamante RO. Daily thermal preference variation of the sand recluse spider Sicarius thomisoides (Araneae: Sicariidae). J Therm Biol 2020; 87:102465. [PMID: 31999600 DOI: 10.1016/j.jtherbio.2019.102465] [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: 06/22/2019] [Revised: 11/19/2019] [Accepted: 11/20/2019] [Indexed: 10/25/2022]
Abstract
Preferential temperature as a physiological feature is crucial for spiders, since it determines the selection of key habitats for their survival and reproduction. In this work, we study the daily and geographical variation of the preferential temperature of the spider Sicarius thomisoides subjected to different degrees of daily thermal oscillation in their habitats. Preferred temperatures differ between coastal and inland populations, but in both cases, there is a marked bimodality in the daily pattern of temperature preference, with two peaks per day that would be given by the changes in the hours of activity. These nocturnal spiders select higher temperatures in the evening (active period) and select lower temperatures during late morning (resting period). In laboratory, spiders have preferred temperatures that differ from those found in their habitats, so they must tolerate or compensate non-preferred temperatures by active thermoregulation in natural conditions.
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Affiliation(s)
- Andrés Taucare-Ríos
- Facultad de Ciencias, Universidad Arturo Prat, Casilla 121, Iquique, Chile; Centro de Investigación en Medio Ambiente (CENIMA), Universidad Arturo Prat, Casilla 121, Iquique, Chile.
| | - Claudio Veloso
- Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Chile
| | - Mauricio Canals
- Departamento de Medicina & Programa de Salud Ambiental, ESP, Facultad de Medicina, Universidad de Chile, Chile
| | - Ramiro O Bustamante
- Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Chile; Instituto de Ecología y Biodiversidad (IEB), Facultad de Ciencias, Universidad de Chile, Santiago, Chile
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20
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Kreiman LE, Solano-Iguaran JJ, Bacigalupe LD, Naya DE. Testing the metabolic homeostasis hypothesis in amphibians. Philos Trans R Soc Lond B Biol Sci 2019; 374:20180544. [PMID: 31203760 PMCID: PMC6606461 DOI: 10.1098/rstb.2018.0544] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2019] [Indexed: 11/12/2022] Open
Abstract
A number of hypotheses about compensatory mechanisms that allow ectothermic animals to cope with the latitudinal decrease in ambient temperature ( TA) have been proposed during the last century. One of these hypotheses, the 'metabolic homeostasis' hypothesis (MHH), states that species should show the highest thermal sensitivity of the metabolic rate ( Q10-SMR) at the colder end of the range of TAs they usually experience in nature. This way, species should be able to minimize maintenance costs during the colder hours of the day, but quickly take advantage of increases in TA during the warmer parts of the day. Here, we created a dataset that includes Q10-SMR values for 58 amphibian species, assessed at four thermal ranges, to evaluate three predictions derived from the MHH. In line with this hypothesis, we found that: (i) Q10-SMR values tended to be positively correlated with latitude when measured at lower TAs, but negative correlated with latitude when measured at higher TAs, (ii) Q10-SMR measured at lower TAs were higher in temperate species, whereas Q10-SMR measured at higher TAs were higher in tropical species, and (iii) the experimental TA at which Q10-SMR was maximal for each species decreased with latitude. This is the first study to our knowledge showing that the relationship between Q10-SMR and latitude in ectotherms changes with the TA at which Q10-SMR is assessed, as predicted from an adaptive hypothesis. This article is part of the theme issue 'Physiological diversity, biodiversity patterns and global climate change: testing key hypotheses involving temperature and oxygen'.
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Affiliation(s)
- Lucas E. Kreiman
- Departamento de Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Buenos Aires 1428, Argentina
| | - Jaiber J. Solano-Iguaran
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Campus Isla Teja, Valdivia 5090000, Chile
| | - Leonardo D. Bacigalupe
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Campus Isla Teja, Valdivia 5090000, Chile
| | - Daniel E. Naya
- Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República, Montevideo 11400, Uruguay
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21
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Rivera‐Ordonez JM, Justin Nowakowski A, Manansala A, Thompson ME, Todd BD. Thermal niche variation among individuals of the poison frog,
Oophaga pumilio
, in forest and converted habitats. Biotropica 2019. [DOI: 10.1111/btp.12691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - A. Justin Nowakowski
- Department of Wildlife, Fish, and Conservation Biology University of California, Davis Davis CA USA
| | | | | | - Brian D. Todd
- Department of Wildlife, Fish, and Conservation Biology University of California, Davis Davis CA USA
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22
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Hodgson MJ, Schwanz LE. Drop it like it's hot: Interpopulation variation in thermal phenotypes shows counter-gradient pattern. J Therm Biol 2019; 83:178-186. [PMID: 31331517 DOI: 10.1016/j.jtherbio.2019.05.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 05/17/2019] [Accepted: 05/19/2019] [Indexed: 01/06/2023]
Abstract
Ectotherms utilise a complex array of behavioural and physiological mechanisms to cope with variation in suboptimal thermal environments. However, these mechanisms may be insufficient for population persistence under contemporary climate change, resulting in a greater need to understand how local populations respond to geographic variation in climate. In this study, we explored the potential for local adaptation and acclimation in thermal traits and behaviours using wild and captive populations of a small agamid lizard (the jacky lizard, Amphibolurus muricatus). We predicted that wild lizards from a high elevation site would have cooler thermal preferences compared to those at low elevation sites to match the more restricted thermal resources at higher, cooler elevations. We additionally explored whether variation in thermal traits was due to recent acclimation or fixed population differences, such as due to developmental plasticity or local adaptation. In contrast to our predictions, we found high-elevation lizards began panting at higher temperatures and had higher thermal preferences relative to lower elevation lizards. When allowed to bask freely, there was no difference in the intensity of basking or daily duration of time spent basking between lizards from different elevations. Although the high-elevation lizards appeared to show stronger acclimation to recent air temperatures compared to low-elevation lizards, this difference was not significant. Similarly, captive lizards acclimated under long and short basking regimes showed no major differences in thermal traits or basking behaviour. Our results are consistent with the presence of counter-gradient variation in thermal phenotypes of lizards, and suggest that these are driven by local adaptive responses or developmental effects rather than recent acclimation.
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Affiliation(s)
- Mitchell J Hodgson
- Evolution & Ecology Research Centre, School of Biological, Earth, and Environmental Sciences, UNSW Sydney, Sydney, NSW, 2052, Australia.
| | - Lisa E Schwanz
- Evolution & Ecology Research Centre, School of Biological, Earth, and Environmental Sciences, UNSW Sydney, Sydney, NSW, 2052, Australia
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23
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Thermal niche conservatism in an environmental gradient in the spider Sicarius thomisoides (Araneae: Sicariidae): Implications for microhabitat selection. J Therm Biol 2018; 78:298-303. [PMID: 30509651 DOI: 10.1016/j.jtherbio.2018.10.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/21/2018] [Accepted: 10/27/2018] [Indexed: 02/05/2023]
Abstract
Temperature is one of the most important environmental variables for organisms, especially for ectothermic animals. In fact, ectotherms must move within a relatively narrow range of temperatures where they are able to maximize their performance. We assessed the thermal ecology of female sand spiders (Sicarius thomisoides) in Chile from separate populations along an environmental gradient and different macro habitats (coast vs. inland locations). The parameters of thermal performance curves do not vary between populations, with an average optimum temperature (T°opt) of 25.33 ± 2.65 °C, and a CT min and CT max of 6.56 ± 1.72 °C and 44.23 ± 4.92 °C, respectively. Our results show that the thermal niche in laboratory is conserved and does not vary along an environmental gradient coinciding with the temperatures selected by female spiders in their microhabitats.
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24
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Bacigalupe LD, Gaitán‐Espitia JD, Barria AM, Gonzalez‐Mendez A, Ruiz‐Aravena M, Trinder M, Sinervo B. Natural selection on plasticity of thermal traits in a highly seasonal environment. Evol Appl 2018; 11:2004-2013. [PMID: 30459844 PMCID: PMC6231472 DOI: 10.1111/eva.12702] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 08/22/2018] [Accepted: 08/24/2018] [Indexed: 01/10/2023] Open
Abstract
For ectothermic species with broad geographical distributions, latitudinal/altitudinal variation in environmental temperatures (averages and extremes) is expected to shape the evolution of physiological tolerances and the acclimation capacity (i.e., degree of phenotypic plasticity) of natural populations. This can create geographical gradients of selection in which environments with greater thermal variability (e.g., seasonality) tend to favor individuals that maximize performance across a broader range of temperatures compared to more stable environments. Although thermal acclimation capacity plays a fundamental role in this context, it is unknown whether natural selection targets this trait in natural populations. Additionally, understanding whether and how selection acts on thermal physiological plasticity is also highly relevant to climate change and biological conservation. Here, we addressed such an important gap in our knowledge in the northernmost population of the four-eyed frog, Pleurodema thaul. We measured plastic responses of critical thermal limits for activity, behavioral thermal preference, and thermal sensitivity of metabolism to acclimation at 10 and 20°C. We monitored survival during three separate recapture efforts and used mark-recapture integrated into an information-theoretic approach to evaluate the relationship between survivals as a function of the plasticity of thermal traits. Overall, we found no evidence that thermal acclimation in this population is being targeted by directional selection, although there might be signals of selection on individual traits. According to the most supported models, survival increased in individuals with higher tolerance to cold when cold-acclimated, probably because daily low extremes are frequent during the cooler periods of the year. Furthermore, survival increased with body size. However, in both cases, the directional selection estimates were nonsignificant, and the constraints of our experimental design prevented us from evaluating more complex models (i.e., nonlinear selection).
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Affiliation(s)
- Leonardo D. Bacigalupe
- Facultad de Ciencias, Instituto de Ciencias Ambientales y EvolutivasUniversidad Austral de ChileValdiviaChile
| | - Juan D. Gaitán‐Espitia
- The Swire Institute of Marine Science and School of Biological SciencesThe University of Hong KongHong KongChina
- CSIRO Oceans and AtmosphereHobartTasmaniaAustralia
| | - Aura M. Barria
- Facultad de Ciencias, Instituto de Ciencias Ambientales y EvolutivasUniversidad Austral de ChileValdiviaChile
| | - Avia Gonzalez‐Mendez
- Departamento de Ecología and Center of Applied Ecology and Sustainability (CAPES), Facultad de Ciencias BiológicasPontificia Universidad Católica de ChileSantiagoChile
| | - Manuel Ruiz‐Aravena
- School of Natural Sciences, College of Sciences and EngineeringUniversity of TasmaniaHobartTasmaniaAustralia
| | | | - Barry Sinervo
- Department of Ecology and Evolutionary BiologyUniversity of CaliforniaSanta CruzCalifornia
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25
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Barria AM, Bacigalupe LD, Lagos NA, Lardies MA. Thermal physiological traits and plasticity of metabolism are sensitive to biogeographic breaks in a rock-pool marine shrimp. J Exp Biol 2018; 221:jeb.181008. [DOI: 10.1242/jeb.181008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 07/31/2018] [Indexed: 12/24/2022]
Abstract
Populations of broadly distributed species commonly exhibit latitudinal variation in thermal tolerance and physiological plasticity. This variation can be interrupted when biogeographic breaks occur across the range of a species, which are known to affect patterns of community structure, abundance, and recruitment dynamics. Coastal biogeographic breaks often impose abrupt changes in environmental characteristics driven by oceanographic processes and can affect the physiological responses of populations inhabiting these areas. Here we examined thermal limits, performances for heart rate and plasticity for metabolic rate of the intertidal shrimp Betaeus emarginatus from seven populations along its latitudinal range (∼ 3000 km). The distribution of this species encompass two breaks at the southeastern Pacific coast of Chile: the northern break is characterized by sharp discontinuities in upwelling regimes, and the southern break, constitutes a major discontinuity in water conditions (temperature, pH, dissolved oxygen and nutrients), coastline topography, and divergence of main oceanographic currents. For B. emarginatus, we found higher plasticity of metabolism in the sites sampled at the biogeographic breaks, and at the site subjected to seasonal upwelling. The variation of metabolic rate was not consistent with increasing latitude and it was not affected by breaks. The lower and upper thermal limits were lower in populations around breaks, although the optimum temperature decreased towards higher latitudes. Overall, while thermal limits and plasticity of metabolism are related to biogeographic breaks, metabolic rate is not related with increasing latitude or the presence of breaks in the sampled range.
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Affiliation(s)
- Aura M. Barria
- Departamento de Ciencias, Facultad de Artes Liberales, Universidad Adolfo Ibañez, Diagonal Las Torres 2640, Peñalolen, Santiago, Chile
| | - Leonardo D. Bacigalupe
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, Chile
| | - Nelson A. Lagos
- Centro de Investigación e Innovación para el Cambio Climático, Facultad de Ciencias, Universidad Santo Tomás, Ejército 146, Santiago, Chile
| | - Marco A. Lardies
- Departamento de Ciencias, Facultad de Artes Liberales, Universidad Adolfo Ibañez, Diagonal Las Torres 2640, Peñalolen, Santiago, Chile
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