Journal of thermal biology最新文献

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Which are the most heat-tolerant animals? Insights from a Mediterranean lepismatid under thermal stress in the context of climate change 哪些是最耐热的动物?气候变化背景下热应激下地中海lepismatid的见解。
IF 3.2 2区 生物学
Journal of thermal biology Pub Date : 2026-07-01 Epub Date: 2026-06-20 DOI: 10.1016/j.jtherbio.2026.104517
Elena Fernández-Vizcaíno, Rafael Molero- Baltanás, José Carbonell, Miquel Gaju-Ricart, Agustín Camacho
{"title":"Which are the most heat-tolerant animals? Insights from a Mediterranean lepismatid under thermal stress in the context of climate change","authors":"Elena Fernández-Vizcaíno,&nbsp;Rafael Molero- Baltanás,&nbsp;José Carbonell,&nbsp;Miquel Gaju-Ricart,&nbsp;Agustín Camacho","doi":"10.1016/j.jtherbio.2026.104517","DOIUrl":"10.1016/j.jtherbio.2026.104517","url":null,"abstract":"<div><div>Measuring the thermal limits of insects is crucial for understanding how thermoregulatory behavior and thermal tolerance interact with the environment. A key question is the maximal temperature terrestrial animals can endure and how plastic these limits are under extreme conditions. Lepismatids are a basal group of insects with remarkable diversity in arid habitats, making them promising candidates for extreme thermoresistance, yet their thermal ecology remains largely unexplored. We present the first experimental evaluation of acclimation effects on voluntary (VTmax), critical (CTmax), and upper lethal thermal limits (UTL) in the Mediterranean silverfish <em>Sceletolepisma guadianicum</em>. Individuals were acclimated for 6 day at either 25°C (n = 32) or 35°C (n = 29) and gradually heated (∼0.5°C min<sup>-1</sup>), with VTmax, CTmax, and lethal limits recorded. <em>S. guadianicum</em> exhibited some of the highest thermal limits reported among terrestrial arthropods: VTmax averaged 50.92°C, CTmax 54.45°C, and UTL 55.85°C, suggesting that extreme thermal resistance among terrestrial arthropods may be more widespread across diverse ecosystems than previously recognized. Thermal limits were consistent between sexes, while VTmax showed slight (1.04°C) but significant plasticity, increasing with higher acclimation temperature and heating rate, whereas CTmax and UTL remained unchanged. This decoupling of behavioral and physiological thermal limits indicates that extreme heat tolerance in terrestrial ectotherms relies on constitutive physiology, with behavioral avoidance as the main flexible buffer. Our findings underscore the importance of integrating physiological and behavioral metrics when assessing animals’ heat tolerance and we provide hypotheses explaining the co-occurrence of exceptional heat tolerance with limited plasticity in this and other highly heat-tolerant species.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"139 ","pages":"Article 104517"},"PeriodicalIF":3.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148308623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to “Circular RNA-mediated regulatory networks drive oxidative stress and metabolic dysregulation in broiler breast muscle under chronic heat stress” [J. Therm. Biol. 139 (2026) 104471] “环状rna介导的调控网络驱动慢性热应激下肉鸡胸肌氧化应激和代谢失调”[J]。小卡。生物医学工程学报,2009(5):344 - 344。
IF 3.2 2区 生物学
Journal of thermal biology Pub Date : 2026-07-01 Epub Date: 2026-05-22 DOI: 10.1016/j.jtherbio.2026.104492
Zhen Liu, Yingsen Liu, Tong Xing, Lin Zhang, Liang Zhao, Feng Gao
{"title":"Corrigendum to “Circular RNA-mediated regulatory networks drive oxidative stress and metabolic dysregulation in broiler breast muscle under chronic heat stress” [J. Therm. Biol. 139 (2026) 104471]","authors":"Zhen Liu,&nbsp;Yingsen Liu,&nbsp;Tong Xing,&nbsp;Lin Zhang,&nbsp;Liang Zhao,&nbsp;Feng Gao","doi":"10.1016/j.jtherbio.2026.104492","DOIUrl":"10.1016/j.jtherbio.2026.104492","url":null,"abstract":"","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"139 ","pages":"Article 104492"},"PeriodicalIF":3.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148005745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Parental care increases endothermy of striped hamsters (Cricetulus barabensis) rearing different litter size 亲代抚育增加了不同产仔数条纹仓鼠(Cricetulus barabensis)的恒温。
IF 3.2 2区 生物学
Journal of thermal biology Pub Date : 2026-07-01 Epub Date: 2026-06-11 DOI: 10.1016/j.jtherbio.2026.104505
Dan Luo, Daliang Huo, Jing Cao, Zhijun Zhao
{"title":"Parental care increases endothermy of striped hamsters (Cricetulus barabensis) rearing different litter size","authors":"Dan Luo,&nbsp;Daliang Huo,&nbsp;Jing Cao,&nbsp;Zhijun Zhao","doi":"10.1016/j.jtherbio.2026.104505","DOIUrl":"10.1016/j.jtherbio.2026.104505","url":null,"abstract":"<div><div>Endothermy is one of the most distinctive physiological traits of mammals, especially during lactation. In this phase, heightened metabolic heat production strengthens endothermy and improves parental care effectiveness, thereby increasing reproductive output. However, it also raises the risk of life-threatening hyperthermia. The precise trade-off governing this balance remains poorly understood. We measured parental care behavior, endothermy, and small intestine digestive enzyme activity and cytochrome <em>c</em> oxidase (COX) activity in brown adipose tissue (BAT) and liver, in striped hamsters with litter sizes ranging from 0 to 12. Maternal body temperature increased significantly with larger litter sizes, accompanied by parallel increases in energy intake, metabolic rate, and milk energy output. These changes were associated with significantly heavier small intestines, kidneys, and mammary glands, as well as elevated digestive enzyme and liver COX activities. Larger litters also led to more time spent suckling, resting and feeding. These variables established a relatively linear relationship, reflecting an adaptive mechanism in the digestive tract and related organs that optimizes energy allocation for parental care, enhances endothermy, and increases reproductive success. Notably, all these variables reached a plateau, while BAT thermogenesis declined with larger litter sizes. These findings align with the parental care model for evolution of endothermy, while also matching the key predictions of heat dissipation limit theory. A trade-off model may be employed: parental care necessitates substantial heat generation, yet limited heat dissipation capacity requires downregulating thermogenic activity. This balancing act may be key to endothermy evolution, increasing reproductive success while avoiding maternal hyperthermia.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"139 ","pages":"Article 104505"},"PeriodicalIF":3.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148258487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Peripheral thermoregulation patterns of stress and relaxation assessed via infrared thermography and linear discriminant analysis 通过红外热成像和线性判别分析评估应力和松弛的外周温度调节模式。
IF 3.2 2区 生物学
Journal of thermal biology Pub Date : 2026-07-01 Epub Date: 2026-06-13 DOI: 10.1016/j.jtherbio.2026.104507
Salvador Calderon-Uribe, Li E. Tepepa-Flores, Erik L. Mateos-Salgado, Luis A. Morales-Hernandez, Irving A. Cruz-Albarran
{"title":"Peripheral thermoregulation patterns of stress and relaxation assessed via infrared thermography and linear discriminant analysis","authors":"Salvador Calderon-Uribe,&nbsp;Li E. Tepepa-Flores,&nbsp;Erik L. Mateos-Salgado,&nbsp;Luis A. Morales-Hernandez,&nbsp;Irving A. Cruz-Albarran","doi":"10.1016/j.jtherbio.2026.104507","DOIUrl":"10.1016/j.jtherbio.2026.104507","url":null,"abstract":"<div><div>In recent years, the automatic identification of stress and relaxation has gained attention due to the substantial impact these states have on physical and mental well-being. While incorporating physiological responses that accurately reflect emotional behavior improves the efficiency of classification models, identifying this relationship is challenging. This often leads to the use of black-box approaches that complicate physiological interpretation. This study aims to characterize the thermal behavior of fingertips in female and male participants during psychological stress and relaxation using statistical features, and to classify these states based on the most significant features. The study also evaluates virtual reality as a relaxation tool by comparing it with mindfulness-based relaxation. To this end, a virtual reality environment was developed based on scientific recommendations to support relaxation processes. The results show that automatic feature selection through linear discriminant analysis can highlight thermographic correlates of peripheral thermoregulation associated with emotional states. Findings indicate that a reduced subset of highly relevant features is sufficient for high performance, achieving high classification accuracy with the 45, 19, and 55 most relevant features for the female, male, and global datasets, respectively. However, these results should be interpreted cautiously due to the limited sample size and the exploratory nature of the study. Additionally, the study demonstrates that virtual reality is associated with relaxation-like thermal responses, supporting its potential as a complementary tool in psychological interventions. Overall, the results may contribute to improving classification performance, furthering our understanding of psychophysiological mechanisms and aiding in the development of effective systems for identifying emotional states automatically.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"139 ","pages":"Article 104507"},"PeriodicalIF":3.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148283731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Short-term heat therapy enhances heart thermotolerance: Cyclic thermal stress reveals adaptive resilience in cardiac function 短期热疗法增强心脏热耐受性:循环热应激揭示心脏功能的适应性恢复。
IF 3.2 2区 生物学
Journal of thermal biology Pub Date : 2026-07-01 Epub Date: 2026-06-18 DOI: 10.1016/j.jtherbio.2026.104515
Ronaldo André Castelo dos Santos de Almeida, Jéssica da Silva Santos, Gabriel Souza de Jesus, Letícia de Sousa Amorim, Fernando de Azevedo Cruz Seara, Anderson Luiz Bezerra da Silveira, Emerson Lopes Olivares
{"title":"Short-term heat therapy enhances heart thermotolerance: Cyclic thermal stress reveals adaptive resilience in cardiac function","authors":"Ronaldo André Castelo dos Santos de Almeida,&nbsp;Jéssica da Silva Santos,&nbsp;Gabriel Souza de Jesus,&nbsp;Letícia de Sousa Amorim,&nbsp;Fernando de Azevedo Cruz Seara,&nbsp;Anderson Luiz Bezerra da Silveira,&nbsp;Emerson Lopes Olivares","doi":"10.1016/j.jtherbio.2026.104515","DOIUrl":"10.1016/j.jtherbio.2026.104515","url":null,"abstract":"<div><div>Short-term heat therapy is emerging as a promising non-pharmacological strategy to enhance cardiovascular resilience, yet its effects on intrinsic cardiac thermotolerance remain unclear. This study investigated whether 5 or 10 days of hot-water immersion (40 °C) is sufficient to induce functional thermotolerance in isolated rat hearts. Wistar rats were assigned to the control (CTR), 5-day heat therapy (HT<sub>5</sub>), or 10-day heat therapy (HT<sub>10</sub>) groups and subsequently evaluated in a Langendorff preparation under a progressive thermal challenge (37 – 40 °C). Mechanical performance was assessed through left ventricular systolic pressure (LVSP), end-diastolic pressure (LVEDP), developed pressure (LVDP) and heart rate (HR), all expressed as a percentage of baseline. HT<sub>10</sub> exhibited a markedly superior hemodynamic profile during heating, characterized by a smaller decline in LVSP and LVDP and reduced elevation of LVEDP compared with CTR and HT<sub>5</sub>. HT<sub>5</sub> showed only partial protection, with greater variability and late-phase diastolic impairment. HR decreased transiently at 38 °C in both treated groups, but HT<sub>10</sub> displayed faster chronotropic recovery and greater stability at 39–40 °C. These patterns indicate that repeated heat exposure for 10 days promotes a robust thermotolerant cardiac phenotype, improving systolic stability, diastolic compliance and chronotropic control during acute heat stress. Collectively, the results demonstrate that short-term cyclic thermal stress, particularly 10 days, is sufficient to enhance myocardial thermal resilience, aligning with early acclimation mechanisms described for mitochondrial protection, HSP-mediated cytoprotection and anti-apoptotic modulation. These findings support the translational potential of short-term heat therapy as a viable intervention to strengthen cardiac tolerance to thermal challenges.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"139 ","pages":"Article 104515"},"PeriodicalIF":3.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148283876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal acclimation affects the repeatability of upper thermal tolerance in Atlantic killifish (Fundulus heteroclitus) 热驯化影响大西洋鳉鱼(Fundulus heteroclitus)上层耐热性的可重复性。
IF 3.2 2区 生物学
Journal of thermal biology Pub Date : 2026-07-01 Epub Date: 2026-06-15 DOI: 10.1016/j.jtherbio.2026.104513
Beatrice Rost-Komiya, David C.H. Metzger, Rachael J. Penman, Tessa S. Blanchard, Madison L. Earhart, Patricia M. Schulte
{"title":"Thermal acclimation affects the repeatability of upper thermal tolerance in Atlantic killifish (Fundulus heteroclitus)","authors":"Beatrice Rost-Komiya,&nbsp;David C.H. Metzger,&nbsp;Rachael J. Penman,&nbsp;Tessa S. Blanchard,&nbsp;Madison L. Earhart,&nbsp;Patricia M. Schulte","doi":"10.1016/j.jtherbio.2026.104513","DOIUrl":"10.1016/j.jtherbio.2026.104513","url":null,"abstract":"<div><div>As the frequency and intensity of heat extremes increases, understanding the capacity for evolution in traits such as thermal tolerance is critical for predicting biological responses to climate change. Here, we assessed the repeatability of CT<sub>max</sub> (a common measure of acute thermal limits in ectotherms) in Atlantic killifish (<em>Fundulus heteroclitus</em>) across three acclimation temperatures (10, 18 and 26°C), because repeatability is an important determinant of a trait's ability to respond to natural selection, but the impact of thermal acclimation on CT<sub>max</sub> repeatability remains unclear. Fish were individually marked and CT<sub>max</sub> was assessed weekly at least 3 times at each acclimation temperature. Mean CT<sub>max</sub> was consistent between 18°C acclimation groups at the beginning and end of the experiment (∼6 months apart) emphasizing the reliability of CT<sub>max</sub> as an estimate of acute thermal tolerance at the group level. CT<sub>max</sub> was highly repeatable at the two lower acclimation temperatures (R = 0.74-0.81), but not at the highest acclimation temperature (R = 0.20), resulting in moderate repeatability across the entire dataset (R = 0.42). There was little correlation of individual-level CT<sub>max</sub> across acclimation temperatures, or in 18°C-acclimated fish at the beginning and end of the experiment. This pattern was associated with substantial inter-individual variation in acclimation response ratio (ARR), suggesting individual variation in thermal plasticity. Together, these results suggest that repeatability in acute thermal limits is strongly contingent on thermal history, and that low repeatability at high acclimation temperatures is likely to constrain the capacity for adaptation in CT<sub>max</sub> as our climate warms.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"139 ","pages":"Article 104513"},"PeriodicalIF":3.2,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148272053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermal and morphological characterization of Garfagnina goats in different seasons 不同季节加蓬山羊的热形态特征
IF 2.9 2区 生物学
Journal of thermal biology Pub Date : 2026-02-01 Epub Date: 2026-01-22 DOI: 10.1016/j.jtherbio.2026.104386
Neila Lidiany Ribeiro , Roberto Germano Costa , Ricardo Bozzi , Edilson Paes Saraiva , Maria Norma Ribeiro , Edgard Cavalcanti Pimenta Filho , Jaciara Ribeiro Miranda , Alessandro Crovetti , Dermeval Araújo Furtado
{"title":"Thermal and morphological characterization of Garfagnina goats in different seasons","authors":"Neila Lidiany Ribeiro ,&nbsp;Roberto Germano Costa ,&nbsp;Ricardo Bozzi ,&nbsp;Edilson Paes Saraiva ,&nbsp;Maria Norma Ribeiro ,&nbsp;Edgard Cavalcanti Pimenta Filho ,&nbsp;Jaciara Ribeiro Miranda ,&nbsp;Alessandro Crovetti ,&nbsp;Dermeval Araújo Furtado","doi":"10.1016/j.jtherbio.2026.104386","DOIUrl":"10.1016/j.jtherbio.2026.104386","url":null,"abstract":"<div><div>This study analyzed the physiological parameters, hair characteristics, and heat exchange mechanisms of native Garfagnina goats in a temperate climate, accounting for seasonal variations and coat color. A total of 50 adult, lactating Garfagnina goats were used for this extensive evaluation. Significant seasonal fluctuations were observed in various metrics: rectal temperature (P = 0.0002), respiratory rate (P = 0.0008), heart rate, hair diameter, and hair length (P &lt; 0.0001). During winter, the variables rectal temperature, heart rate, and hair length were higher than in summer. Additionally, significant differences in hair diameter and length (P &lt; 0.0001) by coat color were identified; specifically, black- and white-coated goats had longer hair than those of other colors. Heat exchanges - comprising radiation, convection, total sensible heat, skin exchanges, total latent heat, and total heat exchanges also varied significantly (P &lt; 0.0001) by season. Although the physiological metrics remained consistent across coat colors, they were affected by seasonal changes, particularly in air temperature. The hair's morphological features adapt to both seasonality and coat color, and these adaptations likely contribute to thermoregulation, helping goats cope with seasonal variations in environmental temperature.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"136 ","pages":"Article 104386"},"PeriodicalIF":2.9,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interactions between brown adipose tissue activity and exercise modality on metabolic kinetics: a crossover study in trained individuals 代谢动力学中棕色脂肪组织活动和运动方式之间的相互作用:一项训练个体的交叉研究。
IF 2.9 2区 生物学
Journal of thermal biology Pub Date : 2026-02-01 Epub Date: 2026-01-18 DOI: 10.1016/j.jtherbio.2026.104392
Dany Alexis Sobarzo Soto , Diego Ignácio Valenzuela Pérez , Naiara Ribeiro Almeida , Bianca Miarka , Armin Isael Alvarado Oyarzo , João Carlos Bouzas Marins , Manuel Sillero-Quintana , Andreia Cristiane Carrenho Queiroz , Ciro José Brito
{"title":"Interactions between brown adipose tissue activity and exercise modality on metabolic kinetics: a crossover study in trained individuals","authors":"Dany Alexis Sobarzo Soto ,&nbsp;Diego Ignácio Valenzuela Pérez ,&nbsp;Naiara Ribeiro Almeida ,&nbsp;Bianca Miarka ,&nbsp;Armin Isael Alvarado Oyarzo ,&nbsp;João Carlos Bouzas Marins ,&nbsp;Manuel Sillero-Quintana ,&nbsp;Andreia Cristiane Carrenho Queiroz ,&nbsp;Ciro José Brito","doi":"10.1016/j.jtherbio.2026.104392","DOIUrl":"10.1016/j.jtherbio.2026.104392","url":null,"abstract":"<div><div>This study aimed to investigate the interactions between basal brown adipose tissue (BAT) activity and exercise modality on energy expenditure and substrate oxidation kinetics in trained individuals. Thirty-five trained males were stratified into high (HBAT, n = 15: 26.5 ± 4.3 years, 25.5 ± 1.8 kg/m<sup>2</sup>) and low (LBAT, n = 20: 27.0 ± 4.1 years, 26.0 ± 1.7 kg/m<sup>2</sup>) BAT activity groups based on infrared thermography evaluation. In a crossover design, each participant performed two experimental sessions: continuous aerobic exercise (AERO: 30 min at 70–80 % HR<sub>reserve</sub>) and high-intensity interval exercise (HIIE: 4 × 4 min at 90–95 % HRmax with 3-min active recovery), separated by 7 days. energy expenditure and substrate oxidation including carbohydrate, lipid and protein were continuously measured by indirect calorimetry during exercise and throughout a 30-min recovery period. Polynomial regression modeling of temporal trajectories revealed a significantly higher total energy expenditure in the HBAT group compared to the LBAT group (+25 %, p &lt; 0.01), with the peak energy expenditure rate observed during HIIE in the HBAT group (3.7 ± 0.2 kcal min<sup>−1</sup> versus 2.9 ± 0.3 kcal min<sup>−1</sup> in AERO-LBAT; p = 0.004). Carbohydrate oxidation displayed a characteristic biphasic decline but showed no significant differences between groups. In contrast, lipid oxidation peaked later and was substantially higher in the HBAT groups, with the most pronounced effect following HIIE. Protein oxidation remained minimal and consistent across all conditions. These findings demonstrate that elevated BAT activity is associated with increased exercise-induced energy expenditure and enhanced lipid utilization during the latter stages of exercise, with HIIE showing the most robust metabolic associations in individuals with high BAT activity.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"136 ","pages":"Article 104392"},"PeriodicalIF":2.9,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146018962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
From big data to small scales: Machine learning enhances microclimate model predictions 从大数据到小尺度:机器学习增强微气候模型预测。
IF 2.9 2区 生物学
Journal of thermal biology Pub Date : 2026-02-01 Epub Date: 2026-01-31 DOI: 10.1016/j.jtherbio.2026.104387
Alon Itzkovitch , Idan Sulami , Ronny Doron Efroni , Moni Shahar , Ofir Levy
{"title":"From big data to small scales: Machine learning enhances microclimate model predictions","authors":"Alon Itzkovitch ,&nbsp;Idan Sulami ,&nbsp;Ronny Doron Efroni ,&nbsp;Moni Shahar ,&nbsp;Ofir Levy","doi":"10.1016/j.jtherbio.2026.104387","DOIUrl":"10.1016/j.jtherbio.2026.104387","url":null,"abstract":"<div><div>Microclimates are critical for understanding how organisms interact with their environments, influencing behaviour, physiology, and species distributions. However, traditional physical heat-balance models for predicting ground temperatures in microhabitats often exhibit biases due to unaccounted environmental complexities and poorly constrained parameters. These limitations can hinder ecological research and conservation planning, particularly in the context of climate change.</div><div>In this study, we demonstrate how high-resolution drone-based mapping and machine learning can improve the accuracy of microclimate models. Using drone imagery, we generated detailed environmental maps, including solar radiation, vegetation indices, and skyview factors, to parameterize a physical heat-balance model. Validation with thermal maps derived from drone-mounted infrared cameras revealed systematic errors in the physical model's predictions, including over- and underestimations under specific environmental conditions. To address these errors, we applied a random forest machine learning model to predict and correct biases in new prediction maps.</div><div>Our results show that machine learning reduced mean absolute errors by over 30% and mean square errors by 50%, while consistently narrowing the range of prediction inaccuracies. Key factors driving biases, such as vegetation cover, solar radiation, and height above ground, were identified, offering valuable insights for improving physical models. The machine learning corrections not only improved accuracy but also highlighted parameters and processes that were previously underrepresented or oversimplified in traditional models.</div><div>These findings illustrate the potential of machine learning to improve microclimate predictions. While our drone-based approach is most applicable to open, sparsely vegetated habitats, the principle of machine learning bias correction can be extended to other systems as well. Correcting microclimate models with machine learning and observational data provides ecologists and conservation practitioners with a powerful framework for generating more accurate microclimate estimates. Such improvements deepen our understanding of species’ responses to climate change and support climate-resilient management strategies.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"136 ","pages":"Article 104387"},"PeriodicalIF":2.9,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146125373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Living in the city has its advantages: thermoregulation behavior and activity time in the Torquate lizard 生活在城市里有它的优势:Torquate蜥蜴的体温调节行为和活动时间
IF 2.9 2区 生物学
Journal of thermal biology Pub Date : 2026-02-01 Epub Date: 2026-01-12 DOI: 10.1016/j.jtherbio.2026.104380
Juan C. González-Morales , Gabriel Suárez-Varón , Elizabeth Bastiaans , Gregorio Moreno-Rueda , Heliot Zarza
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