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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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Zhu Y, Wang K, Jia X, Fu C, Yu H, Wang Y. Antioxidant peptides, the guardian of life from oxidative stress. Med Res Rev 2024; 44:275-364. [PMID: 37621230 DOI: 10.1002/med.21986] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 08/01/2023] [Accepted: 08/06/2023] [Indexed: 08/26/2023]
Abstract
Reactive oxygen species (ROS) are produced during oxidative metabolism in aerobic organisms. Under normal conditions, ROS production and elimination are in a relatively balanced state. However, under internal or external environmental stress, such as high glucose levels or UV radiation, ROS production can increase significantly, leading to oxidative stress. Excess ROS production not only damages biomolecules but is also closely associated with the pathogenesis of many diseases, such as skin photoaging, diabetes, and cancer. Antioxidant peptides (AOPs) are naturally occurring or artificially designed peptides that can reduce the levels of ROS and other pro-oxidants, thus showing great potential in the treatment of oxidative stress-related diseases. In this review, we discussed ROS production and its role in inducing oxidative stress-related diseases in humans. Additionally, we discussed the sources, mechanism of action, and evaluation methods of AOPs and provided directions for future studies on AOPs.
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Affiliation(s)
- Yiyun Zhu
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Kang Wang
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
| | - Xinyi Jia
- National University of Singapore (Suzhou) Research Institute, Suzhou, Jiangsu, China
- Department of Food Science and Technology, Food Science and Technology Center, National University of Singapore, Singapore, Singapore
| | - Caili Fu
- National University of Singapore (Suzhou) Research Institute, Suzhou, Jiangsu, China
| | - Haining Yu
- Department of Bioscience and Biotechnology, Dalian University of Technology, Dalian, Liaoning, China
| | - Yipeng Wang
- Department of Biopharmaceutical Sciences, College of Pharmaceutical Sciences, Soochow University, Suzhou, Jiangsu, China
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3
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Burrow AK, McEntire KD, Maerz JC. Estimating the potential drivers of dispersal outcomes for juvenile gopher frogs (Rana capito) using agent-based models. Front Ecol Evol 2023. [DOI: 10.3389/fevo.2023.1026541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
Among mobile terrestrial animals, movement among microsites can allow individuals to behaviorally moderate their body temperatures and rates of water loss, which can have important consequences for activity times, growth, fecundity, and survival. Ground-layer vegetation can change the availability and variability of microclimates; however, gaps in our understanding of how individuals interact with the microclimates created by vegetation limit our ability to inform management actions for wildlife. Amphibians can simultaneously balance operant body temperatures and water loss and the availability of heterogeneous microclimates should moderate how effectively they are able to do so. However, relatively few studies have attempted to mechanistically demonstrate how ground vegetation-driven effects on microclimatic variation may affect amphibian performance and survival. Agent-based modeling (ABM) can incorporate behavior and other mechanisms to understand how animals interact with their environments to result in larger scale patterns. They are effective for exploring alternative scenarios and representing the uncertainty in systems. Here, we use ABMs to integrate field and laboratory measurements of movement behavior, physiology, and plant effects on near-ground microclimate to explore how ground vegetation and the availability of terrestrial refugia may affect the survival and terrestrial distributions of juvenile gopher frogs (Rana capito) under two weather regimes. We also examine how assumptions regarding micro-scale movement (< 1 m2) affect the influence of ground vegetation on survival and settlement within refugia. While all variables affected settlement and survival, our models predict that inter-annual variation in weather and the density and spatial distribution of permanent refugia likely have the greatest influence on juvenile survival. The benefit of increased ground vegetation was dependent on the reasonable assumption that gopher frogs exhibit microclimate habitat selection throughout the day and night to limit water loss. Our models suggest that vegetation would be most beneficial to amphibians under warmer weather regimes provided there is sufficient rainfall.
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Desjonquères C, Villén‐Pérez S, De Marco P, Márquez R, Beltrán JF, Llusia D. Acoustic species distribution models (
aSDMs
): A framework to forecast shifts in calling behaviour under climate change. Methods Ecol Evol 2022. [DOI: 10.1111/2041-210x.13923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Camille Desjonquères
- Terrestrial Ecology Group (TEG), Departamento de Ecología Universidad Autónoma de Madrid Madrid Spain
| | - Sara Villén‐Pérez
- Universidad de Alcalá GloCEE – Global Change Ecology and Evolution Research Group Departamento de Ciencias de la Vida 28805, Alcalá de Henares Madrid Spain
| | - Paulo De Marco
- Theory, Metacommunities and Landscape Ecology lab, ICB‐V Universidade Federal de Goiás Goiânia Brazil
| | - Rafael Márquez
- Fonoteca Zoológica & Departamento de Biodiversidad y Biología Evolutiva Museo Nacional de Ciencias Naturales (CSIC) Madrid Spain
| | - Juan F. Beltrán
- Departamento de Zoología Universidad de Sevilla Sevilla Spain
| | - Diego Llusia
- Terrestrial Ecology Group (TEG), Departamento de Ecología Universidad Autónoma de Madrid Madrid Spain
- Centro de Investigación en Biodiversidad y Cambio Global Universidad Autónoma de Madrid Madrid Spain
- Laboratório de Herpetologia e Comportamento Animal, Departamento de Ecologia, Instituto de Ciências Biológicas Universidade Federal de Goiás Goiás Brazil
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Gajendra Singh Mehra, Mohanty N, Dutta SK. Occurrence patterns of herpetofauna in different habitat types of western Terai Arc Landscape, India. JOURNAL OF THREATENED TAXA 2022. [DOI: 10.11609/jott.7666.14.5.21010-21018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The Terai Arc Landscape (TAL) is an important region of biodiversity in India. Situated in the foothills of the Himalaya, it is spread across India and Nepal. We describe the herpetofauna of the western part of TAL encompassing Ramnagar Forest Division, which falls in Uttarakhand state of India. We primarily used visual encounter survey method for sampling. A total of 47 species of herpetofauna belonging to three orders, 17 families and 36 genera were recorded from 10 habitat types (6 terrestrial and 4 aquatic). Highest species richness (n=32) was recorded from the human settlement and least (n=4) species richness was reported from pond habitat. In this paper, the diversity of amphibians and reptiles in each habitat type is discussed.
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Coelho FEA, Camurugi F, Marques R, Magalhães FDM, Werneck FP, Garda AA. Historical connections between Atlantic Forest and Amazonia drove genetic and ecological diversity in Lithobates palmipes (Anura, Ranidae). SYST BIODIVERS 2022. [DOI: 10.1080/14772000.2022.2046657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Felipe Eduardo Alves Coelho
- Programa de Pós-Graduação em Ecologia, Universidade Federal do Rio Grande do Norte, Centro de Biociências, Avenida Senador Salgado Filho, S/N, Lagoa Nova, Natal 59078-900, RN, Brazil
| | - Felipe Camurugi
- Departamento de Botânica e Zoologia, Universidade Federal do Rio Grande do Norte, Centro de Biociências, Avenida Senador Salgado Filho, S/N, Lagoa Nova, Natal 59078-900, RN, Brazil
| | - Ricardo Marques
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia, Universidade Federal da Paraíba, Centro de Ciências Exatas e da Natureza, Departamento de Sistemática e Ecologia, Campus I – Cidade Universitaria, S/N, Cidade Universitária, João Pessoa 58051-900, Paraíba, Brasil
| | - Felipe De Medeiros Magalhães
- Programa de Pós-Graduação em Ciências Biológicas (Zoologia, Universidade Federal da Paraíba, Centro de Ciências Exatas e da Natureza, Departamento de Sistemática e Ecologia, Campus I – Cidade Universitaria, S/N, Cidade Universitária, João Pessoa 58051-900, Paraíba, Brasil
- Earth and Environmental Sciences, Ecology and Evolution, Rutgers University-Newark, 195 University Ave, Newark 07102, New Jersey NJ, USA
| | - Fernanda P. Werneck
- Programa de Coleções Científicas Biológicas, Instituto Nacional de Pesquisas da Amazônia, Avenida André Araújo 2936, Aleixo, Manaus 69067-375, Amazonas, Brazil
| | - Adrian Antonio Garda
- Departamento de Botânica e Zoologia, Universidade Federal do Rio Grande do Norte, Centro de Biociências, Avenida Senador Salgado Filho, S/N, Lagoa Nova, Natal 59078-900, RN, Brazil
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7
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Frog community composition-environment relationships vary over time: Are snapshot studies of metacommunity dynamics useful? Basic Appl Ecol 2021. [DOI: 10.1016/j.baae.2021.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Hoffmann EP, Cavanough KL, Mitchell NJ. Low desiccation and thermal tolerance constrains a terrestrial amphibian to a rare and disappearing microclimate niche. CONSERVATION PHYSIOLOGY 2021; 9:coab027. [PMID: 33959292 PMCID: PMC8084025 DOI: 10.1093/conphys/coab027] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 02/25/2021] [Accepted: 03/29/2021] [Indexed: 05/30/2023]
Abstract
Drier and hotter conditions caused by climate change threaten species that exist close to their physiological limits, as well as those with limited ability to move. Habitat specialists may also be particularly vulnerable if they have specific abiotic requirements. Here we assess whether thermal and hydric constraints can explain the highly restricted and declining distributions of the critically endangered terrestrial-breeding frog, Geocrinia alba. We also evaluate the species' vulnerability to climate change based on the similarity of current microclimatic conditions to their physiological limits. We found that G. alba had low thresholds of thermal and desiccation tolerance relative to other anuran species. The estimated thermal optimum (Topt ) and critical thermal maxima (CTmax ) were 23.3°C and 29.6°C, respectively, and adult frogs had an absorption threshold (AT, the lowest water potential at which water can be absorbed from a substrate) of -50 kPa, the lowest recorded for an amphibian. Comparing environmental conditions and water loss in the field using agar models showed that riparian habitats where frogs occur provide a unique microclimate in the landscape, offering significantly lower desiccation risk during extreme summer conditions compared to immediately adjacent riparian and terrestrial habitats. Monitoring of microclimate conditions within occupied frog habitats over 2 years showed that in extreme dry and hot years the AT was exceeded at six of eight sites, and Topt was exceeded at two of eight sites. Given their specific physiological limits, the apparent rarity of suitable microclimates and a regional drying-warming trend, we suggest that G. alba occupies a potentially disappearing niche and may be indicative of other habitat specialists that rely on ephemeral drainages. More broadly, this study highlights that desiccation thresholds may tightly constrain amphibian distributions and need to be considered along with thermal tolerance thresholds when predicting the impacts of climate change.
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Affiliation(s)
- Emily P Hoffmann
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
| | - Karen L Cavanough
- Perth Zoo, Department of Biodiversity, Conservation and Attractions, PO Box 489, South Perth, Western Australia 6951, Australia
| | - Nicola J Mitchell
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Western Australia 6009, Australia
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9
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Navas CA, Gouveia SF, Solano-Iguarán JJ, Vidal MA, Bacigalupe LD. Amphibian responses in experimental thermal gradients: Concepts and limits for inference. Comp Biochem Physiol B Biochem Mol Biol 2021; 254:110576. [PMID: 33609807 DOI: 10.1016/j.cbpb.2021.110576] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 01/19/2021] [Accepted: 02/09/2021] [Indexed: 11/26/2022]
Abstract
The interpretation of thermal-gradient data depends on the behavioral drives reported or assumed, and on the underlying behavioral models explaining how such drives operate. The best-known example is positive thermotaxis, a thermoregulatory behavioral drive frequently linked to a dual set-point model of thermoregulation around a target range. This behavioral drive is often assumed as dominant among 'ectotherms', including amphibians. However, we argue that, because amphibians are extremely diverse, they may exhibit alternative behavioral drives in thermal gradients, and tackle this idea from two perspectives. First, we provide a historical review of original definitions and proposed limits for inference. Second, although caveats apply, we propose that a cross-study analysis of data of temperature settings of gradients and the temperatures selected by amphibians would corroborate alternative behavioral drives, including negative thermotaxis. Therefore, we analyzed published data focusing on such relationships and show that gradient temperature settings influence the temperatures selected by amphibians, with further effects of phylogeny and ontogeny. We conclude that thermal gradient experiments are outstanding tools to investigate behavioral drives, but no given drive can be assumed a priori unless additional information about thermoregulation is available. Based on the historical debate, we propose using selected temperatures and preferred temperatures as different concepts, the former merely operational and the second explicitly linked to positive thermotaxis (and thus compatible with dual set-point thermoregulation). Under this view, thermal preferences would stand for a hypothesis of a behavioral drive (positive thermotaxis) requiring formal testing. These considerations impact the scope for inference based on thermal gradient experiments, particularly ecological modeling and emerging disease.
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Affiliation(s)
- Carlos A Navas
- Department of Physiology, Biosciences Institute, University of São Paulo, Brazil.
| | - Sidney F Gouveia
- Departament of Ecology, Federal University of Sergipe, São Cristóvão, Brazil
| | - Jaiber J Solano-Iguarán
- Institute of Environmental and Evolutionary Sciences, Austral University of Chile, Isla Teja Campus, Valdivia, Chile
| | - Marcela A Vidal
- Departament of Basic Sciences, Faculty of Sciences, Bío-Bío University, Casilla 447, Chillán, Chile
| | - Leonardo D Bacigalupe
- Institute of Environmental and Evolutionary Sciences, Austral University of Chile, Isla Teja Campus, Valdivia, Chile
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10
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Greenberg DA, Palen WJ. Hydrothermal physiology and climate vulnerability in amphibians. Proc Biol Sci 2021; 288:20202273. [PMID: 33593188 DOI: 10.1098/rspb.2020.2273] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Concerns over the consequences of global climate change for biodiversity have spurred a renewed interest in organismal thermal physiology. However, temperature is only one of many environmental axes poised to change in the future. In particular, hydrologic regimes are also expected to shift concurrently with temperature in many regions, yet our understanding of how thermal and hydration physiology jointly affect performance and fitness is still limited for most taxonomic groups. Here, we investigated the relationship between functional performance, hydration state and temperature in three ecologically distinct amphibians, and compare how temperature and water loss can concurrently limit activity under current climate conditions. We found that performance was maintained across a broad range of hydration states in all three species, but then declines abruptly after a threshold of 20-30% mass loss. This rapid performance decline was accelerated when individuals were exposed to warmer temperatures. Combining our empirical hydrothermal performance curves with species-specific biophysical models, we estimated that dehydration can increase restrictions on species' activity by up to 60% compared to restriction by temperature alone. These results illustrate the importance of integrating species' hydration physiology into forecasts of climate vulnerability, as omitting this axis may significantly underestimate the effects of future climate change on Earth's biological diversity.
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Affiliation(s)
- Dan A Greenberg
- Earth to Ocean Research Group, Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada V5A 1S6
| | - Wendy J Palen
- Earth to Ocean Research Group, Department of Biological Sciences, Simon Fraser University, 8888 University Drive, Burnaby, BC, Canada V5A 1S6
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11
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Sanabria EA, González E, Quiroga LB, Tejedo M. Vulnerability to warming in a desert amphibian tadpole community: the role of interpopulational variation. J Zool (1987) 2020. [DOI: 10.1111/jzo.12850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- E. A. Sanabria
- Instituto de Ciencias Básicas Facultad de Filosofía Humanidades y Artes Universidad Nacional de San Juan San Juan Argentina
- Facultad de Ciencias Exactas y Naturales Universidad Nacional de Cuyo Mendoza Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) La Plata Argentina
| | - E. González
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) La Plata Argentina
- Museo de La Plata Universidad Nacional de La Plata La Plata Argentina
| | - L. B. Quiroga
- Instituto de Ciencias Básicas Facultad de Filosofía Humanidades y Artes Universidad Nacional de San Juan San Juan Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) La Plata Argentina
| | - M. Tejedo
- Departamento de Ecología Evolutiva Estación Biológica de Doñana CSIC Sevilla Spain
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Beukema W, Pasmans F, Van Praet S, Ferri-Yáñez F, Kelly M, Laking AE, Erens J, Speybroeck J, Verheyen K, Lens L, Martel A. Microclimate limits thermal behaviour favourable to disease control in a nocturnal amphibian. Ecol Lett 2020; 24:27-37. [PMID: 33022129 DOI: 10.1111/ele.13616] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/15/2020] [Accepted: 09/07/2020] [Indexed: 11/28/2022]
Abstract
While epizootics increasingly affect wildlife, it remains poorly understood how the environment shapes most host-pathogen systems. Here, we employ a three-step framework to study microclimate influence on ectotherm host thermal behaviour, focusing on amphibian chytridiomycosis in fire salamanders (Salamandra salamandra) infected with the fungal pathogen Batrachochytrium salamandrivorans (Bsal). Laboratory trials reveal that innate variation in thermal preference, rather than behavioural fever, can inhibit infection and facilitate salamander recovery under humidity-saturated conditions. Yet, a 3-year field study and a mesocosm experiment close to the invasive Bsal range show that microclimate constraints suppress host thermal behaviour favourable to disease control. A final mechanistic model, that estimates range-wide, year-round host body temperature relative to microclimate, suggests that these constraints are rule rather than exception. Our results demonstrate how innate host defences against epizootics may remain constrained in the wild, which predisposes to range-wide disease outbreaks and population declines.
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Affiliation(s)
- Wouter Beukema
- Wildlife Health Ghent, Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, Merelbeke, 9820, Belgium
| | - Frank Pasmans
- Wildlife Health Ghent, Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, Merelbeke, 9820, Belgium
| | - Sarah Van Praet
- Wildlife Health Ghent, Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, Merelbeke, 9820, Belgium
| | - Francisco Ferri-Yáñez
- Department of Community Ecology, Helmholtz Centre for Environmental Research (UFZ), Theodor-Lieser-Strasse 4, Halle, 06120, Germany
| | - Moira Kelly
- Wildlife Health Ghent, Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, Merelbeke, 9820, Belgium
| | - Alexandra E Laking
- Wildlife Health Ghent, Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, Merelbeke, 9820, Belgium
| | - Jesse Erens
- Wildlife Health Ghent, Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, Merelbeke, 9820, Belgium
| | - Jeroen Speybroeck
- Research Institute for Nature and Forest - INBO, Havenlaan 88 bus 73, Brussels, 1000, Belgium
| | - Kris Verheyen
- Forest & Nature Lab, Department of Forest and Water Management, Ghent University, Geraardsbergsesteenweg 267, Gontrode, 9090, Belgium
| | - Luc Lens
- Terrestrial Ecology Unit, Ghent University, K. L, Ledeganckstraat 35, Ghent, 9000, Belgium
| | - An Martel
- Wildlife Health Ghent, Department of Pathology, Bacteriology and Avian Diseases, Ghent University, Salisburylaan 133, Merelbeke, 9820, Belgium
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Bonnefond A, Courtois EA, Sueur J, Sugai LSM, Llusia D. Climatic breadth of calling behaviour in two widespread Neotropical frogs: Insights from humidity extremes. GLOBAL CHANGE BIOLOGY 2020; 26:5431-5446. [PMID: 32654304 DOI: 10.1111/gcb.15266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 01/18/2020] [Accepted: 05/26/2020] [Indexed: 06/11/2023]
Abstract
Climate change is severely altering precipitation regimes at local and global scales, yet the capacity of species to cope with these changes has been insufficiently examined. Amphibians are globally endangered and particularly sensitive to moisture conditions. For mating, most amphibian species rely on calling behaviour, which is a key weather-dependent trait. Using passive acoustics, we monitored the calling behaviour of two widespread Neotropical frogs in 12 populations located at the humidity extremes but thermal mean of the species distribution. Based on 2,554 hr of recordings over a breeding season, we found that both the aquatic species Pseudis paradoxa and the arboreal species Boana raniceps exhibited calling behaviour at a wide range of relative humidity. Calling humidity was significantly lower in conspecific populations subjected to drier conditions, while calling temperature did not differ between populations or species. Overall, no variation in climatic breadth was observed between large and small choruses, and calling behaviour was scarcely detected during the driest, hottest and coldest potential periods of breeding. Our results showed that calling humidity of the studied species varies according to the precipitation regime, suggesting that widespread Neotropical anurans may have the capacity to exhibit sexual displays in different climatic environments. Regardless of the underlying mechanism (plasticity or local adaptation), which should be determined by common garden experiments, a wide and population-specific climatic breadth of calling behaviour may assist species to deal with changing humidity conditions. To our knowledge, this is the first study to explore the response capacity of anurans to perform calling behaviour under contrasting precipitation regimes.
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Affiliation(s)
- Anaïs Bonnefond
- Centre de recherche Montabo, LEEISA UMSR 3456 CNRS-UG Ifremer, Cayenne, French Guiana
| | - Elodie A Courtois
- Centre de recherche Montabo, LEEISA UMSR 3456 CNRS-UG Ifremer, Cayenne, French Guiana
| | - Jérôme Sueur
- Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, Paris, France
| | - Larissa Sayuri M Sugai
- Instituto de Biociências, Universidade Estadual Paulista (UNESP), Rio Claro, Brazil
- Terrestrial Ecology Group, Departamento de Ecología, Universidad Autónoma de Madrid (UAM), Ciudad Universitaria de Cantoblanco, Madrid, Spain
| | - Diego Llusia
- Terrestrial Ecology Group, Departamento de Ecología, Universidad Autónoma de Madrid (UAM), Ciudad Universitaria de Cantoblanco, Madrid, Spain
- Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Universidad Autónoma de Madrid (UAM), Ciudad Universitaria de Cantoblanco, Madrid, Spain
- Laboratório de Herpetologia e Comportamento Animal, Departamento de Ecologia, Instituto de Ciências Biológicas, Universidade Federal de Goiás (UFG), Goiânia, Goiás, Brazil
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Székely D, Cogălniceanu D, Székely P, Denoël M. Adult-Juvenile interactions and temporal niche partitioning between life-stages in a tropical amphibian. PLoS One 2020; 15:e0238949. [PMID: 32925925 PMCID: PMC7489520 DOI: 10.1371/journal.pone.0238949] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 08/26/2020] [Indexed: 01/07/2023] Open
Abstract
Divergence in ecological niche offers organisms the opportunity of exploiting different food and habitat resources, scaling down competition and predation both among species, and within different age or size-classes of the same species. In harsh environments, where abiotic factors determine a clustering of resources during short timespans, competition and predation between organisms is likely to be enhanced. This is the case in tropical dry forests, where amphibians have limited opportunities to feed, their activity being restricted to the short rainy season. One way to maximize resource exploitation while avoiding predation risk is by adopting different diel activity patterns. We tested this hypothesis by comparing activity patterns in adults and recently metamorphosed juveniles of Pacific horned frogs (Ceratophrys stolzmanni) during field surveys and in an experimental study. Field surveys showed that the adults are strictly nocturnal, whereas freshly metamorphosed juveniles can be found active above ground at all hours, with a peak activity during daytime. The average body condition index of juveniles found active during the night was higher than that of juveniles found active during the day, suggesting that the weaker individuals may be constrained to being active during the day. On the other hand, in a laboratory experiment, juveniles that were visually exposed to adults moved less than those in the absence of adults. Both field and experimental observations indicate a temporal niche divergence between life stages. The results of the experiment offer support to the hypothesis that the juveniles in this species display an inverse activity pattern compared to adults, which can reduce competitive interactions and predation pressure from the larger conspecifics.
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Affiliation(s)
- Diana Székely
- Laboratorio de Ecología Tropical y Servicios Ecosistémicos - EcoSs Lab, Departamento de Ciencias Biológicas, Universidad Técnica Particular de Loja, Loja, Ecuador
- Faculty of Natural and Agricultural Sciences, Ovidius University Constanța, Constanța, Romania
- Laboratory of Ecology and Conservation of Amphibians (LECA), Freshwater and OCeanic science Unit of reSearch (FOCUS), University of Liège, Liège, Belgium
| | - Dan Cogălniceanu
- Faculty of Natural and Agricultural Sciences, Ovidius University Constanța, Constanța, Romania
- Asociation Chelonia, București, Romania
| | - Paul Székely
- Laboratorio de Ecología Tropical y Servicios Ecosistémicos - EcoSs Lab, Departamento de Ciencias Biológicas, Universidad Técnica Particular de Loja, Loja, Ecuador
- Asociation Chelonia, București, Romania
- * E-mail:
| | - Mathieu Denoël
- Laboratory of Ecology and Conservation of Amphibians (LECA), Freshwater and OCeanic science Unit of reSearch (FOCUS), University of Liège, Liège, Belgium
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Niche models at inter- and intraspecific levels reveal hierarchical niche differentiation in midwife toads. Sci Rep 2020; 10:10942. [PMID: 32616878 PMCID: PMC7331615 DOI: 10.1038/s41598-020-67992-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 06/15/2020] [Indexed: 11/09/2022] Open
Abstract
Variation and population structure play key roles in the speciation process, but adaptive intraspecific genetic variation is commonly ignored when forecasting species niches. Amphibians serve as excellent models for testing how climate and local adaptations shape species distributions due to physiological and dispersal constraints and long generational times. In this study, we analysed the climatic factors driving the evolution of the genus Alytes at inter- and intraspecific levels that may limit realized niches. We tested for both differences among the five recognized species and among intraspecific clades for three of the species (Alytes obstetricans, A. cisternasii, and A. dickhilleni). We employed ecological niche models with an ordination approach to perform niche overlap analyses and test hypotheses of niche conservatism or divergence. Our results showed strong differences in the environmental variables affecting species climatic requirements. At the interspecific level, tests of equivalence and similarity revealed that sister species were non-identical in their environmental niches, although they neither were entirely dissimilar. This pattern was also consistent at the intraspecific level, with the exception of A. cisternasii, whose clades appeared to have experienced a lower degree of niche divergence than clades of the other species. In conclusion, our results support that Alytes toads, examined at both the intra- and interspecific levels, tend to occupy similar, if not identical, climatic environments.
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Sanabria E, Quiroga L. The body temperature of active desert anurans from hyper-arid environment of South America: The reliability of WorldClim for predicted body temperatures in anurans. J Therm Biol 2019; 85:102398. [PMID: 31657739 DOI: 10.1016/j.jtherbio.2019.102398] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/09/2019] [Accepted: 08/09/2019] [Indexed: 02/06/2023]
Abstract
The temperature of anuran activity from arid regions have been poorly studied. In recent years, the emphasis was placed on predicting the impacts of global warming on the fauna of ectotherms in general. Many times future impacts are predicted based on global thermal information (macroscale) but not on an individual scale. We used literature data about body temperature in anurans that inhabit the desert region of the Northwest of Argentina to analyze the role of the elevation, eco-region and substrate temperature on the individual scale. Also, we evaluated the predictive capacity that global environmental variables obtained from WorldClim for this region, and compared them with those of local scale. Our results showed that the activity body temperature of the toads in the arid region of western Argentina strongly influenced by elevation and the substrate temperature on the individual scale. We observed that data of the global scale (WorldClim) can predict the body temperature of the studied amphibians, but with a deviation, not less than 8 °C. According to our results, it is evident that to making reliable predictions of how global warming impacts on amphibians in the region, the environmental temperature data need to be recorded at the local scale (operative temperatures).
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Affiliation(s)
- Eduardo Sanabria
- Instituto de Ciencias Básicas, Facultad de Filosofía Humanidades y Artes, Universidad Nacional de San Juan, Av. José Ignacio de la Roza 230 (O), Capital, San Juan. CP: 5400, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Padre Contreras 1300, 5500 Mendoza, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
| | - Lorena Quiroga
- Instituto de Ciencias Básicas, Facultad de Filosofía Humanidades y Artes, Universidad Nacional de San Juan, Av. José Ignacio de la Roza 230 (O), Capital, San Juan. CP: 5400, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina.
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von May R, Catenazzi A, Santa-Cruz R, Gutierrez AS, Moritz C, Rabosky DL. Thermal physiological traits in tropical lowland amphibians: Vulnerability to climate warming and cooling. PLoS One 2019; 14:e0219759. [PMID: 31369565 PMCID: PMC6675106 DOI: 10.1371/journal.pone.0219759] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 07/02/2019] [Indexed: 11/22/2022] Open
Abstract
Climate change is affecting biodiversity and ecosystem function worldwide, and the lowland tropics are of special concern because organisms living in this region experience temperatures that are close to their upper thermal limits. However, it remains unclear how and whether tropical lowland species will be able to cope with the predicted pace of climate warming. Additionally, there is growing interest in examining how quickly thermal physiological traits have evolved across taxa, and whether thermal physiological traits are evolutionarily conserved or labile. We measured critical thermal maximum (CTmax) and minimum (CTmin) in 56 species of lowland Amazonian frogs to determine the extent of phylogenetic conservatism in tolerance to heat and cold, and to predict species' vulnerability to climate change. The species we studied live in sympatry and represent ~65% of the known alpha diversity at our study site. Given that critical thermal limits may have evolved differently in response to different temperature constraints, we tested whether CTmax and CTmin exhibit different rates of evolutionary change. Measuring both critical thermal traits allowed us to estimate species' thermal breadth and infer their potential to respond to abrupt changes in temperature (warming and cooling). Additionally, we assessed the contribution of life history traits and found that both critical thermal traits were correlated with species' body size and microhabitat use. Specifically, small direct-developing frogs in the Strabomantidae family appear to be at highest risk of thermal stress while tree frogs (Hylidae) and narrow mouthed frogs (Microhylidae) tolerate higher temperatures. While CTmax and CTmin had considerable variation within and among families, both critical thermal traits exhibited similar rates of evolutionary change. Our results suggest that 4% of lowland rainforest frogs assessed will experience temperatures exceeding their CTmax, 25% might be moderately affected and 70% are unlikely to experience pronounced heat stress under a hypothetical 3°C temperature increase.
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Affiliation(s)
- Rudolf von May
- Department of Ecology and Evolutionary Biology, Museum of Zoology, University of Michigan, Ann Arbor, MI, United States of America
- Museum of Vertebrate Zoology, University of California, Berkeley, Berkeley, CA, United States of America
| | - Alessandro Catenazzi
- Department of Biological Sciences, Florida International University, Miami, FL, United States of America
| | - Roy Santa-Cruz
- Área de Herpetología, Museo de Historia Natural de la Universidad Nacional de San Agustín (MUSA), Arequipa, Perú
| | - Andrea S. Gutierrez
- Facultad de Ciencias Biológicas, Universidad Nacional Agraria La Molina, Lima, Perú
| | - Craig Moritz
- Museum of Vertebrate Zoology, University of California, Berkeley, Berkeley, CA, United States of America
- Centre for Biodiversity Analysis and Research School of Biology, The Australian National University, Canberra, Australia
| | - Daniel L. Rabosky
- Department of Ecology and Evolutionary Biology, Museum of Zoology, University of Michigan, Ann Arbor, MI, United States of America
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Peptides for Skin Protection and Healing in Amphibians. Molecules 2019; 24:molecules24020347. [PMID: 30669405 PMCID: PMC6359409 DOI: 10.3390/molecules24020347] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/16/2019] [Accepted: 01/17/2019] [Indexed: 01/04/2023] Open
Abstract
Amphibian skin is not to be considered a mere tegument; it has a multitude of functions related to respiration, osmoregulation, and thermoregulation, thus allowing the individuals to survive and thrive in the terrestrial environment. Moreover, amphibian skin secretions are enriched with several peptides, which defend the skin from environmental and pathogenic insults and exert many other biological effects. In this work, the beneficial effects of amphibian skin peptides are reviewed, in particular their role in speeding up wound healing and in protection from oxidative stress and UV irradiation. A better understanding of why some species seem to resist several environmental insults can help to limit the ongoing amphibian decline through the development of appropriate strategies, particularly against pathologies such as viral and fungal infections.
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