1
|
Tuckett QM, Hill JE, Everett K, Goodman C, Wooley ES, Durland Donahou A, Lapham L, Buckman K, Johnson S, Romagosa C. Thermal tolerance for the tropical clawed frog, Xenopus tropicalis with comments on comparative methods for amphibian studies. J Therm Biol 2024; 123:103890. [PMID: 38879911 DOI: 10.1016/j.jtherbio.2024.103890] [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: 12/15/2023] [Revised: 06/03/2024] [Accepted: 06/10/2024] [Indexed: 06/18/2024]
Abstract
Thermal tolerance data are important for identifying the potential range of non-native species following introduction and establishment. Such data are particularly important for understanding invasion risks of tropical species introduced to temperate climates and identifying whether they can survive outside tropical regions. A breeding population of the tropical clawed frog (Xenopus tropicalis) was recently discovered in west-central Florida, U.S.A. This fully aquatic species is native to the rainforest belt of west Africa and has not been documented outside its native range. Because of the lack of invasion history, data are sparse on the thermal limits for this species. We used chronic lethal and critical thermal methodologies to investigate thermal tolerance on adult stages and critical thermal methods on tadpoles. Because of our use of both chronic and critical methodologies, we also examined the literature to reveal common methods used to investigate thermal minimum and maximum temperature in amphibians, which were found to be dominated by the critical maximum. Chronic lethal temperatures for adult X. tropicalis were 9.73 °C and 36.68 °C. Critical temperatures were affected by acclimation temperature and life stage; adults were more tolerant of extreme temperatures. Based on these critical thermal data and the fact that breeding tends to occur when temperatures are suitable for survival, tadpole stages are unlikely to be affected by extreme temperatures. Instead, range expansion in Florida will likely be limited by the adult stages. Our findings indicate that the tropical clawed frog could occupy much of southern Peninsular Florida and other tropical and subtropical regions worldwide.
Collapse
Affiliation(s)
- Quenton M Tuckett
- University of Florida, Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest, Fisheries, and Geomatics Sciences, 1408 24th Street SE, Ruskin, FL, 33570, USA.
| | - Jeffrey E Hill
- University of Florida, Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest, Fisheries, and Geomatics Sciences, 1408 24th Street SE, Ruskin, FL, 33570, USA
| | - Katie Everett
- University of Florida, Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest, Fisheries, and Geomatics Sciences, 1408 24th Street SE, Ruskin, FL, 33570, USA
| | - Colin Goodman
- University of Florida, Department of Wildlife Ecology and Conservation, Gainesville, FL, 32611, USA
| | - Emily S Wooley
- University of Florida, Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest, Fisheries, and Geomatics Sciences, 1408 24th Street SE, Ruskin, FL, 33570, USA
| | - Allison Durland Donahou
- University of Florida, Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest, Fisheries, and Geomatics Sciences, 1408 24th Street SE, Ruskin, FL, 33570, USA
| | - Lauren Lapham
- University of Florida, Tropical Aquaculture Laboratory, Program in Fisheries and Aquatic Sciences, School of Forest, Fisheries, and Geomatics Sciences, 1408 24th Street SE, Ruskin, FL, 33570, USA
| | - Katherine Buckman
- University of Florida, Department of Wildlife Ecology and Conservation, Gainesville, FL, 32611, USA
| | - Steve Johnson
- University of Florida, Department of Wildlife Ecology and Conservation, Gainesville, FL, 32611, USA
| | - Christina Romagosa
- University of Florida, Department of Wildlife Ecology and Conservation, Gainesville, FL, 32611, USA
| |
Collapse
|
2
|
Chaiyasing R, Jinagool P, Wipassa V, Kusolrat P, Aengwanich W. Impact of rising temperature on physiological and biochemical alterations that affect the viability of blood cells in American bullfrog crossbreeds. Heliyon 2024; 10:e32416. [PMID: 38933952 PMCID: PMC11200338 DOI: 10.1016/j.heliyon.2024.e32416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/01/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024] Open
Abstract
The study aimed to examine the impact of increasing environmental temperatures on physiological changes, oxidative stress, nitric oxide production, total antioxidant capacity, and blood cell viability in American bullfrog crossbreeds. Frogs and frog blood cells were exposed to temperature ranges of 25-33 °C and 25-37 °C, respectively. Physiological parameters (body temperature, pulse rate, ventilation rate, and oxygen saturation) and biochemical parameters (total antioxidant power, hydrogen peroxide, malondialdehyde, nitric oxide, and mitochondrial activity) were measured at every 2 °C increment. Results showed that body temperature rose with increased environmental temperature (P < 0.05). Pulse rates at 33 °C were higher than those at 25-31 °C (P < 0.05). Ventilation rates at 31 °C exceeded those at 25 °C and 27 °C (P < 0.05). Oxygen saturation levels remained stable at 25-33 °C (P > 0.05). Total antioxidant power at 25 °C was greater than at 27-37 °C (P < 0.05). Hydrogen peroxide levels at 27 °C were higher compared to 25 °C and 31-37 °C (P < 0.05). Malondialdehyde levels at 25-33 °C were higher than at 35 °C and 37 °C (P < 0.05). Nitric oxide levels at 37 °C were higher than at 25-33 °C (P < 0.05), and at 35 °C were higher than at 25-31 °C (P < 0.05). Blood cell viability at 25-31 °C was higher than at 37 °C (P < 0.05). These results suggest that at an environmental temperature of 33 °C, the frogs' body temperature approached 31 °C or higher, and were likely to be harmful to the frogs. Finally, the environmental temperature that caused frog blood cell death was 37 °C.
Collapse
Affiliation(s)
| | - Pailin Jinagool
- Stress and Oxidative Stress in Animal Research Unit of Mahasarakham University, Thailand
- Faculty of Veterinary Sciences, Mahasarakham University, Mahasarakham, 44000, Thailand
| | - Vajara Wipassa
- Faculty of Veterinary Sciences, Mahasarakham University, Mahasarakham, 44000, Thailand
| | - Prayuth Kusolrat
- Faculty of Science and Technology, Nakhonratchasima Rajabhat University, Nakhonratchasima, 30000, Thailand
| | - Worapol Aengwanich
- Stress and Oxidative Stress in Animal Research Unit of Mahasarakham University, Thailand
- Faculty of Veterinary Sciences, Mahasarakham University, Mahasarakham, 44000, Thailand
| |
Collapse
|
3
|
Alves-Nunes JM, Fellone A, Almeida-Santos SM, de Medeiros CR, Sazima I, Vuolo Marques OA. Study of defensive behavior of a venomous snake as a new approach to understand snakebite. Sci Rep 2024; 14:10230. [PMID: 38702318 PMCID: PMC11068791 DOI: 10.1038/s41598-024-59416-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 04/10/2024] [Indexed: 05/06/2024] Open
Abstract
Snakebites affect millions of people worldwide. The majority of research and management about snakebites focus on venom and antivenom, with less attention given to snake ecology. The fundamental factor in snakebites is the snakes' defensive biting behavior. Herein we examine the effects of environmental variables (temperature, time of day, and human stimulus) and biological variables (sex and body size) on the biting behavior of a medically significant pit viper species in Brazil, Bothrops jararaca (Viperidae), and associate it with the epidemiology of snakebites. Through experimental simulations of encounters between humans and snakes, we obtained behavioral models applicable to epidemiological situations in the State of São Paulo, Brazil. We found a significant overlap between behavioral, morphological, environmental, and epidemiological data. Variables that increase snakebites in epidemiological data also enhance the tendency of snakes to bite defensively, resulting in snakebites. We propose that snakebite incidents are influenced by environmental and morphological factors, affecting the behavior of snakes and the proportion of incidents. Thus, investigating behavior of snakes related to snakebite incidents is a valuable tool for a better understanding of the epidemiology of these events, helping the prediction and, thus, prevention of snakebites.
Collapse
Affiliation(s)
- João Miguel Alves-Nunes
- Programa de Pós-Graduação em Biodiversidade, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, São Paulo, Brazil.
- Laboratório de Ecologia e Evolução, Instituto Butantan, São Paulo, São Paulo, Brazil.
| | - Adriano Fellone
- Laboratório de Ecologia e Evolução, Instituto Butantan, São Paulo, São Paulo, Brazil
- Programa de Pós- Graduação em Ecologia e Evolução, Universidade Federal de São Paulo, Campus Diadema, São Paulo, Brazil
| | - Selma Maria Almeida-Santos
- Programa de Pós-Graduação em Biodiversidade, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, São Paulo, Brazil
- Laboratório de Ecologia e Evolução, Instituto Butantan, São Paulo, São Paulo, Brazil
| | | | - Ivan Sazima
- Laboratório de Ecologia e Evolução, Instituto Butantan, São Paulo, São Paulo, Brazil
- Museu de Biodiversidade Biológica, Instituto de Biologia, Universidade Estadual de Campinas, Campinas, São Paulo, Brazil
| | - Otavio Augusto Vuolo Marques
- Programa de Pós-Graduação em Biodiversidade, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, São Paulo, Brazil
- Laboratório de Ecologia e Evolução, Instituto Butantan, São Paulo, São Paulo, Brazil
- Programa de Pós- Graduação em Ecologia e Evolução, Universidade Federal de São Paulo, Campus Diadema, São Paulo, Brazil
| |
Collapse
|
4
|
Camacho A, Rodrigues MT, Jayyusi R, Harun M, Geraci M, Carretero MA, Vinagre C, Tejedo M. Does heat tolerance actually predict animals' geographic thermal limits? THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170165. [PMID: 38242475 DOI: 10.1016/j.scitotenv.2024.170165] [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: 09/11/2023] [Revised: 01/11/2024] [Accepted: 01/12/2024] [Indexed: 01/21/2024]
Abstract
The "climate extremes hypothesis" is a major assumption of geographic studies of heat tolerance and climatic vulnerability. However, this assumption remains vastly untested across taxa, and multiple factors may contribute to uncoupling heat tolerance estimates and geographic limits. Our dataset includes 1000 entries of heat tolerance data and maximum temperatures for each species' known geographic limits (hereafter, Tmax). We gathered this information across major animal taxa, including marine fish, terrestrial arthropods, amphibians, non-avian reptiles, birds, and mammals. We first tested if heat tolerance constrains the Tmax of sites where species could be observed. Secondly, we tested if the strength of such restrictions depends on how high Tmax is relative to heat tolerance. Thirdly, we correlated the different estimates of Tmax among them and across species. Restrictions are strong for amphibians, arthropods, and birds but often weak or inconsistent for reptiles and mammals. Marine fish describe a non-linear relationship that contrasts with terrestrial groups. Traditional heat tolerance measures in thermal vulnerability studies, like panting temperatures and the upper set point of preferred temperatures, do not predict Tmax or are inversely correlated to it, respectively. Heat tolerance restricts the geographic warm edges more strongly for species that reach sites with higher Tmax for their heat tolerance. These emerging patterns underline the importance of reliable species' heat tolerance indexes to identify their thermal vulnerability at their warm range edges. Besides, the tight correlations of Tmax estimates across on-land microhabitats support a view of multiple types of thermal challenges simultaneously shaping ranges' warm edges for on-land species. The heterogeneous correlation of Tmax estimates in the ocean supports the view that fish thermoregulation is generally limited, too. We propose new hypotheses to understand thermal restrictions on animal distribution.
Collapse
Affiliation(s)
- Agustín Camacho
- Departamento de Ecología Evolutiva, Estación Biológica de Doñana, CSIC, Av. Américo Vespucio 26, 41092 Sevilla, Spain; São Paulo, SP, CEP: 05508-090, Brazil.
| | - Miguel Trefaut Rodrigues
- Laboratorio de Herpetologia, Departamento de Zoologia, Instituto de Biociências, USP, Rua do Matão, trav. 14, n° 321, Cidade Universitária, São Paulo, SP CEP: 05508-090, Brazil
| | - Refat Jayyusi
- School of Life Sciences, Arizona State University, USA
| | - Mohamed Harun
- Administração Nacional das Àreas de Conservaçao, Ministério da Terra, Ambiente e desenvolvimento rural, Rua da Resistência, nr° 1746/47 8° andar, Maputo, Mozambique; Faculdade de Veterinaria UEM, Maputo, Mozambique
| | - Marco Geraci
- Arnold School of Public Health, Department of Epidemiology and Biostatistics, University of South Carolina, USA; CCMAR - Centre of Marine Sciences, University of Algarve, Faro, Portugal; MEMOTEF Department, School of Economics, Sapienza University of Rome
| | - Miguel A Carretero
- CIBIO-InBIO, Universidade do Porto, Campus de Vairão, Rua Padre Armando Quintas, 4485-661 Vairão, Portugal; BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, P-4485-661 Vairão, Portugal; Department of Biology, Faculty of Sciences of the University of Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Catarina Vinagre
- CCMAR - Centre of Marine Sciences, University of Algarve, Faro, Portugal
| | - Miguel Tejedo
- Departamento de Ecología Evolutiva, Estación Biológica de Doñana, CSIC, Av. Américo Vespucio 26, 41092 Sevilla, Spain
| |
Collapse
|
5
|
Aragon-Traverso JH, Piñeiro M, Olivares JPS, Sanabria EA. Temporal variation of thermal sensitivity to global warming: Acclimatization in the guitarist beetle, Megelenophorus americanus (Coleoptera: Tenebrionidae) from the Monte Desert. Comp Biochem Physiol A Mol Integr Physiol 2023; 285:111505. [PMID: 37619666 DOI: 10.1016/j.cbpa.2023.111505] [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: 06/02/2023] [Revised: 07/28/2023] [Accepted: 08/14/2023] [Indexed: 08/26/2023]
Abstract
Global warming is a major threat to biodiversity, the increase in mean temperature plus the higher rate and intensity of heat waves can severely affect organisms by exposing them to temperatures beyond their tolerance limits. Desert ectotherms are particularly vulnerable due to their dependence on environmental temperatures in an extreme habitat. Thermal tolerance changes depending on environmental conditions, studying these fluctuations provides a better understanding of species susceptibility to global warming. Tenebrionids are successful desert-inhabiting ectotherm taxa because of a series of adaptations for heat tolerance and water loss. We studied the seasonal variation (acclimatization) of thermal tolerance in Megelenophorus americanus, a widely distributed species in the Monte Desert (Argentina). To do this, we measured environmental and operative temperatures: body temperature (Tb), soil temperature (Ts), air temperature (Ta), environmental temperature (Te) and maximum temperature (Tmax), and tolerance proxies volunteer thermal maximum (VTmax), Fluid release (FR) and critical thermal maximum (CTmax) in a population of M. americanus from San Juan province, Argentina from October to March (full activity season). We found that Ts and Ta are accurate predictors of Tb, suggesting thermoconformism. All tolerance proxies showed differences among months, suggesting a natural acclimatization process in situ. Insects were found operating beyond VTmax (thermal stress) but they were far from reaching CTmax under natural conditions. Organisms present different degrees of tolerance plasticity that should be considered when predicting potential impacts of climate change.
Collapse
Affiliation(s)
- Juan Hector Aragon-Traverso
- Instituto de Ciencias Básicas, Facultad de Filosofía Humanidades y Artes, Universidad Nacional de San Juan, Av. José Ignacio de la Roza 230 (O), San Juan 5400, Argentina; CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, CCT, San Juan, Argentina.
| | - Mauricio Piñeiro
- CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, CCT, San Juan, Argentina; Instituto de Biotecnología, Facultad de ingeniería, Universidad Nacional de San Juan, Avenida Libertador Gral. San Martín 1109 (O), San Juan 5400, Argentina
| | - Juan Pablo Segundo Olivares
- Departamento de Biología, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de San Juan, Av. José Ignacio de la Rosa y Meglioli, 5400 San Juan, Argentina
| | - Eduardo Alfredo Sanabria
- Instituto de Ciencias Básicas, Facultad de Filosofía Humanidades y Artes, Universidad Nacional de San Juan, Av. José Ignacio de la Roza 230 (O), San Juan 5400, Argentina; CONICET, Consejo Nacional de Investigaciones Científicas y Técnicas, CCT, San Juan, Argentina; Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo. Padre Contreras 1300, Mendoza 5500, Argentina
| |
Collapse
|
6
|
Niu Z, Xue H, Jiang Z, Chai L, Wang H. Effects of temperature on metamorphosis and endochondral ossification in Rana chensinensis tadpoles. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2023; 45:101057. [PMID: 36657230 DOI: 10.1016/j.cbd.2023.101057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 12/28/2022] [Accepted: 01/08/2023] [Indexed: 01/15/2023]
Abstract
Temperature is one of the important factors affecting the growth, development, and metamorphosis of amphibians. Endochondral ossification during metamorphosis plays a crucial role in amphibian survival and adaptation on land. In this study, we explored the effects of different temperature treatments on the growth, development, and endochondral ossification of Rana chensinensis tadpoles during metamorphosis. The results showed that high temperature exposure may affect the skeletal development of tadpoles during metamorphosis, such as reduction of bone length and ossification of limbs, thyroid gland damage and change of ossification-related genes expression levels,and ultimately affect the movement and survival of tadpoles in the terrestrial environment. These results provide an experimental reference for further research on the effects of temperature on amphibian growth and development and provide an important theoretical basis for the decline of the amphibian population caused by temperature.
Collapse
Affiliation(s)
- Ziyi Niu
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - HaoYu Xue
- School of Philosophy and Government, Shaanxi Normal University, Xi'an 710119, China
| | - Zhaoyang Jiang
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - Lihong Chai
- School of Water and Environment, Chang'an University, Xi'an 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University, Xi'an 710062, China
| | - Hongyuan Wang
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China.
| |
Collapse
|
7
|
Fiorillo BF, Faggioni GP, Cerezer FO, Becker CG, Díaz‐Ricaurte JC, Martins M. Effects of environmental factors on the ecology and survival of a widespread, endemic Cerrado frog. Biotropica 2023. [DOI: 10.1111/btp.13209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Affiliation(s)
- Bruno F. Fiorillo
- Herp Trips, Reserva Particular do Patrimônio Natural Trápaga São Miguel Arcanjo Brazil
- Manacá Institute, Reserva Particular do Patrimônio Natural Trápaga São Miguel Arcanjo Brazil
- Escola Superior de Agricultura Luiz de Queiroz, Programa de Pós‐Graduação em Ecologia Aplicada Universidade de São Paulo Piracicaba Brazil
| | | | - Felipe Osmari Cerezer
- Programa de Pós‐Graduacão em Biodiversidade Animal, Departamento de Ecologia e Evolução, CCNE Universidade Federal de Santa Maria Santa Maria Brazil
| | - C. Guilherme Becker
- Department of Biology The Pennsylvania State University University Park Pennsylvania USA
| | - Juan C. Díaz‐Ricaurte
- Escola Superior de Agricultura Luiz de Queiroz, Programa de Pós‐Graduação em Ecologia Aplicada Universidade de São Paulo Piracicaba Brazil
- Horae Gene Therapy Center University of Massachusetts Medical School Worcester MA USA
- Departamento de Ecologia, Instituto de Biociências Universidade de São Paulo São Paulo Brazil
- Semillero de investigación en Ecofisiologia y Biogeografía de Vertebrados (EcoBioVert), Grupo de Investigación en Biodiversidad y Desarrollo Amazónico (BYDA), Programa de Biología, Facultad de Ciencias Básicas Universidad de la Amazonía Florencia Colombia
| | - Marcio Martins
- Departamento de Ecologia, Instituto de Biociências Universidade de São Paulo São Paulo Brazil
| |
Collapse
|
8
|
Díaz-Ricaurte JC, Guevara-Molina EC, Alves-Nunes JM, Serrano FC, Hrncir M. Linking body condition and thermal physiology in limping crickets: Does limb autotomy incur costs concerning behavioral thermal tolerance? JOURNAL OF EXPERIMENTAL ZOOLOGY. PART A, ECOLOGICAL AND INTEGRATIVE PHYSIOLOGY 2022; 337:393-402. [PMID: 35167191 DOI: 10.1002/jez.2577] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/23/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
Many ectotherms have the ability to voluntarily detach a body part, known as autotomy, usually in response to predator attacks. Autotomy can have an immediate benefit for survival, but it can also involve costs related to the individual's body condition. Even though the effects of autotomy have been studied in many ecophysiological aspects, its short-term costs on the ability to tolerate high environmental temperatures are still unexplored. Herein, we evaluated the effects of autotomy on the behavioral thermal tolerance (VTMax ) in the cricket Gryllus assimilis. We hypothesized that, due to the increased energetic costs to maintain homeostasis, autotomized crickets have a lower VTMax than intact ones. Additionally, we investigated differences in VTMax between sexes, as well as the effects of heating rates and body mass on their VTMax . Contrary to our hypothesis, we found no differences between VTMax of autotomized and intact individuals. However, we observed that females have a higher VTMax than males, regardless of their condition (i.e., autotomized and intact). Moreover, we detected significant effects of body mass and heating rate on behavioral thermal tolerances. The results of our study indicate that costs associated with limb autotomy at high environmental temperatures might be intricate and not immediately impactful. Furthermore, important aspects of reproduction and ecology might be responsible for differences in VTMax between males and females. Our results contribute to understanding the ecological and physiological aspects of ectotherms and how they respond to changing climatic conditions.
Collapse
Affiliation(s)
- Juan C Díaz-Ricaurte
- Departamento de Ecologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, São Paulo, Brazil
- Escola Superior de Agricultura Luiz de Queiroz, Centro de Energia Nuclear na Agricultura, Programa de Pós-Graduação em Ecologia Aplicada, Universidade de São Paulo, Piracicaba, São Paulo, Brazil
- Semillero de Investigación en Ecofisiología y Biogeografía de Vertebrados, Grupo de investigación en Biodiversidad y Desarrollo Amazónico (BYDA), Centro de investigaciones Amazónicas Macagual-Cesar Augusto Estrada Gonzales, Universidad de la Amazonia, Florencia, Caquetá, Colombia
| | - Estefany C Guevara-Molina
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - João M Alves-Nunes
- Laboratório de Ecologia e Evolução, Instituto Butantan, São Paulo, São Paulo, Brazil
- Programa de Pós-Graduação em Biologia Animal, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, São Paulo, Brazil
| | - Filipe C Serrano
- Departamento de Ecologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Michael Hrncir
- Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| |
Collapse
|
9
|
Díaz-Ricaurte JC, Serrano FC, Guevara-Molina EC, Araujo C, Martins M. Correction: Does behavioral thermal tolerance predict distribution pattern and habitat use in two sympatric Neotropical frogs? PLoS One 2021; 16:e0246851. [PMID: 33539462 PMCID: PMC7861396 DOI: 10.1371/journal.pone.0246851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
10
|
Díaz-Ricaurte JC, Serrano FC. Short-term captivity does not affect immediate voluntary thermal maximum of a neotropical pitviper: Implications for behavioral thermoregulation. JOURNAL OF EXPERIMENTAL ZOOLOGY PART 2020; 335:199-206. [PMID: 33258560 DOI: 10.1002/jez.2433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/15/2020] [Accepted: 11/18/2020] [Indexed: 11/07/2022]
Abstract
Ectotherms depend on temperature to maintain their physiological functions and through behavioral changes, they can avoid overheating in their habitats. The voluntary thermal maximum (VTMax ) represents the maximum temperature tolerated by individuals before actively moving to a colder place. However, if and how VTMax might change after capture and in captivity remains understudied. We investigate if measurements taken in captivity are a good proxy for thermal tolerance of wild individuals. As thermal history has been shown to affect behavioral response and physiological parameters, herein we hypothesized that VTMax of the neotropical viper Bothrops pauloensis varies throughout the captivity period. We measured the VTMax of individuals immediately after capture and in three trials during a short-term period in captivity. Measurements were done by recording their body temperature at which they exited a heating box experimental setup. In contrast to our hypothesis, the VTMax was not significantly affected by time in captivity but there was interindividual variation. There were also no significant differences between field and captivity measurements, in spite of the small effect size. Our results indicate that the VTMax of this snake population is not affected by a short-term captivity period. Furthermore, an invariant VTMax might indicate low phenotypic plasticity, as individuals do not appear to adjust their tolerance to short-term exposure to higher temperatures and potential vulnerability to threats such as global warming. We expect that our results can contribute to understanding the effect of captivity on thermal tolerance in neotropical squamates, allowing for insights into their thermal physiology and ecology.
Collapse
Affiliation(s)
- Juan C Díaz-Ricaurte
- Departamento de Ecologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
- Escola Superior de Agricultura Luiz de Queiroz, Programa de Pós-Graduação em Ecologia Aplicada, Universidade de São Paulo, Piracicaba, Brazil
- Semillero de Investigación en Ecofisiología y Biogeografía de Vertebrados, Grupo de investigación en Biodiversidad y Desarrollo Amazónico (BYDA), Centro de investigaciones Amazónicas Macagual-César Augusto Estrada González, Universidad de la Amazonia, Florencia, Caquetá, Colombia
| | - Filipe C Serrano
- Departamento de Ecologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil
| |
Collapse
|