Journal of thermal biology最新文献

{"title":"Effects of acute high-temperature on gill tissue structure, serum biochemical indices, antioxidant capacity and liver transcriptomics of Thamnaconus septentrionalis","authors":"Ying Chen ,&nbsp;Si-Qing Chen ,&nbsp;Bo Zhang ,&nbsp;Zhi-Jie Zheng ,&nbsp;Yu-Ao Zhang ,&nbsp;Qing Chang ,&nbsp;Juan-Wen Yu ,&nbsp;Tian-Shi Zhang ,&nbsp;Jin-Chao Zhu ,&nbsp;Li Bian","doi":"10.1016/j.jtherbio.2025.104098","DOIUrl":"10.1016/j.jtherbio.2025.104098","url":null,"abstract":"<div><div>As global extreme heat events become more frequent, aquaculture faces significant challenges due to prolonged high summer temperatures, which lead to elevated water temperatures. Investigating the physiological and biochemical responses of fish to thermal stress, as well as breeding heat-resistant varieties, are essential strategies for addressing these challenges. <em>Thamnaconus septentrionalis</em> is an important aquaculture species in southern China. When water temperatures exceed 30 °C during the summer, this species experiences reduced feeding, growth stagnation, and increased mortality rates. To elucidate the physiological and biochemical response mechanisms of <em>T. septentrionalis</em> under thermal stress, this study established a high-temperature group (30 °C) and a control group (20 °C) for a 48-h thermal stress experiment. Tissue samples were collected from the experimental fish at 0, 12, 24, and 48 h post-stress. The effects of acute thermal stress on gill tissue structure, serum biochemical indicators, liver antioxidant capacity, and liver transcriptomics were explored. The results revealed that the gill tissues of the high-temperature group exhibited slight bending of the gill filaments, terminal swelling, and cellular vacuolization, along with a tendency for adjacent gill filaments to fuse. The liver antioxidant capacity and serum biochemical indicators in the high-temperature group were significantly elevated compared to the control group (<em>P</em> &lt; 0.05). Transcriptomic sequencing identified 5536 differentially expressed genes (<em>P</em> &lt; 0.05), with 2639 genes upregulated and 2897 downregulated. Gene Ontology (GO) enrichment analysis indicated that differentially expressed genes were primarily associated with metabolic processes and redox reactions. KEGG pathway analysis showed significant enrichment of genes in pathways related to amino acid metabolism, carbon metabolism, and glycolysis/gluconeogenesis, with notable downregulation observed in the high-temperature group. This study provides valuable theoretical insights into the mechanisms underlying the response of <em>T. septentrionalis</em> to high-temperature stress, contributing to the understanding of aquaculture resilience in the face of climate change.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"129 ","pages":"Article 104098"},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747041","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}

{"title":"Probiotics/prebiotics effect on chicken gut microbiota and immunity in relation to heat-stress and climate-change mitigation","authors":"Yara Sayed ,&nbsp;Mariam Hassan ,&nbsp;Heba M. Salem ,&nbsp;Khaled Al-Amry ,&nbsp;Gamal Eid","doi":"10.1016/j.jtherbio.2025.104097","DOIUrl":"10.1016/j.jtherbio.2025.104097","url":null,"abstract":"<div><div>Heat stress is a serious hazard that threatens world poultry production. The avian gut microbiome plays a critical role in improving nutrient utilization, competing with pathogens, stimulating an immune response, and reducing inflammatory reactions. Hence, the gut microbiome has a positive impact on the host's health which appears in the shape of improved body weight, feed conversion rate, and increased birds' productivity (meat or eggs). Accordingly, this review shed light on the chicken gut microbiome, its correlation with the immunity of chicken, and how this affects the general health condition of the bird as well as, the role of prebiotics and probiotics in improving the gut health and increasing birds' productivity, especially under climate change and heat stress condition. The review aims to focus on the significance of maintaining healthy chickens in order to increase the production of poultry meat to satisfy human needs. A robust microbiota and a well-functioning immune system synergistically contribute to the optimal health and productivity of chickens.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"129 ","pages":"Article 104097"},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776727","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}

{"title":"Evaluation of postprandial thermal feeling in mice using a behavioral thermoregulation analysis: Differences in meat species and their fractions","authors":"Jun-ichi Wakamatsu ,&nbsp;Yeying Tan ,&nbsp;Seiya Kato ,&nbsp;Haruka Abe ,&nbsp;Manabu Kawahara ,&nbsp;Toru Hayakawa ,&nbsp;Haruto Kumura","doi":"10.1016/j.jtherbio.2025.104101","DOIUrl":"10.1016/j.jtherbio.2025.104101","url":null,"abstract":"<div><div>Classification of the thermal nature of meat in traditional Chinese medicine (TCM) varies depending on the meat species and their fractions. The objectives of this study were to establish an experimental system to evaluate postprandial thermal feeling based on behavioral thermoregulation, investigate it among different meat species and their fractions, and clarify the relationship between their thermal nature and the active meat constituents that affect thermal feeling. Freeze-dried meat, defatted meat, and extracted fat were prepared from horse meat, chicken, pork, beef, mutton, and venison. After feeding, mice were placed in an elongated chamber equipped with a continuous thermogradient floor. An obvious peak in the cumulative staying time at the mouse's preferred temperature was observed after 30 min, and the postprandial thermal feeling was evaluated by examining the preferred temperatures. As a result, purified meat proteins were not considered to affect postprandial thermal feeling among meat species. In contrast, the ethanol and water extracts of defatted horse meat induced a “cool feeling,” and the extracts of other meat species induced a “warm feeling.” Chicken and pork fat induced a cool feeling, whereas beef and mutton fat induced a warm feeling. Additionally, certain dose-dependent constituent(s) in these fats affected the postprandial thermal feeling. Using the established evaluation system, it was concluded that the extract and fat in meat are involved in the postprandial thermal feeling, and the thermal nature of the meat in TCM depends not only on animal-specific components but also on their contents.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"129 ","pages":"Article 104101"},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747040","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}

{"title":"Critical thermal maxima of Polistes life stages from different climates, with a critical evaluation of methods","authors":"Helmut Käfer ,&nbsp;Helmut Kovac ,&nbsp;Astrid B. Amstrup ,&nbsp;Jesper G. Sørensen ,&nbsp;Anton Stabentheiner","doi":"10.1016/j.jtherbio.2025.104111","DOIUrl":"10.1016/j.jtherbio.2025.104111","url":null,"abstract":"<div><div>Ambient temperature is a crucial abiotic factor for ectotherms. It strongly influences development, life and abundance, as well as success in colonizing new habitats. In the eusocial paper wasps <em>Polistes</em> sp.<em>,</em> colony-forming insects with open nests, the larvae and pupae have limited options to influence their own body temperature in response to high environmental temperatures. They are dependent on measures taken by the adults to keep it at tolerable levels. We determined the upper thermal limits (CT_max) in field populations of three paper wasp species (<em>Polistes dominula</em>, <em>P. gallicus</em>, <em>P. biglumis</em>) from different climates (temperate, Mediterranean, alpine) for three life stages (larvae, pupae, adults). Due to morphological and physiological characteristics of the individual life stages, they did not show the same reactions to temperature rise and heat stress in terms of respiration and body movement. CT_max evaluation by established methods (mortal fall, short-term respiration patterns) was not possible, so we had to develop an adapted evaluation type based on long term respiration patterns. The most striking result was that the CT_max was similar in all populations and life stages, ranging from 47.6 to 48.8 °C in larvae and pupae, and from 47.1 to 47.9 °C in adults. <em>P. dominula</em> differed from <em>P. gallicus</em> and <em>P. biglumis</em>; the latter did not differ significantly (all stages). Tests in individual groups (populations, life stages) showed differences in one parameter or the other (population, life stage, mass). Overall, population (and thus climate as a related factor) and life stage, but not mass, had a significant effect on CT_max.s</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"129 ","pages":"Article 104111"},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823355","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}

{"title":"Fractional modeling with optimized variable order for the thermal impacts of mobile phones on the auricular region","authors":"M. Khalaf ,&nbsp;W.K. Zahra","doi":"10.1016/j.jtherbio.2025.104104","DOIUrl":"10.1016/j.jtherbio.2025.104104","url":null,"abstract":"<div><div>Fractional derivatives with variable order offer a powerful extension to the traditional fractional and integer derivatives, allowing adaptability well-suited for modeling complex, real-world systems with evolving memory and non-local properties. This study presents a variable-order fractional model to simulate the thermal effects of the mobile phone on the auricular region in different operating modes. Laplace transform is used to solve the proposed model to simulate the heat transfer dynamics between the ear and the smartphone. Numerical simulations are presented, demonstrating the effectiveness of the variable fractional order in predicting thermal performance over conventional approaches. The results demonstrate that the fractional model provides a more accurate representation of thermal memory effects and nonlocal heat conduction in biological tissues compared with traditional models. Furthermore, a detailed parametric analysis reveals the influence of the fractional order on heat dissipation rates, aligning well with thermographic observations. This study highlights the effectiveness of variable-order fractional modeling in capturing complex heat transfer dynamics, offering a more precise framework for thermal analysis in biomedical and electronic applications.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"129 ","pages":"Article 104104"},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776726","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}

{"title":"Modeling heat transfer in biological tissues with temperature-dependent properties under the moving heat source effects","authors":"Yingze Wang,&nbsp;Zhaowei He,&nbsp;Sheng Zhang,&nbsp;Zhe Wang,&nbsp;Wenbo Zheng","doi":"10.1016/j.jtherbio.2025.104110","DOIUrl":"10.1016/j.jtherbio.2025.104110","url":null,"abstract":"<div><div>The effects of temperature-dependent physical parameters on the thermal behavior of biological tissue subjected to a moving heat source have been studied in present work. A nonlinear bio-heat transfer model incorporating dual-phase lag and Arrhenius equations has been proposed. Using a hybrid Laplace transform and numerical inversion approach, the temperature distribution and thermal damage under various moving heat sources has been obtained and illustrated. Comparative analyses reveal significant differences in tissue thermal response between temperature-dependent and independent parameters across different heat source velocities. Key findings highlight the substantial impact of temperature-dependent specific heat capacity, thermal conductivity, and blood perfusion rate on tissue thermal behavior.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"129 ","pages":"Article 104110"},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815968","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}

{"title":"Role of the nasal cavity as a perception site of environmental humidity via a menthol-sensitive cold reception mechanism","authors":"Hironori Watanabe ,&nbsp;Issei Kato ,&nbsp;Taisuke Sugi ,&nbsp;Kei Nagashima","doi":"10.1016/j.jtherbio.2025.104109","DOIUrl":"10.1016/j.jtherbio.2025.104109","url":null,"abstract":"<div><div>Humans can sense environmental humidity; however, the mechanism underlying this ability remains unclear. This study aimed to clarify whether the nasal cavity is involved in humidity sensation. Experiments were conducted on healthy young adults, in which controlled nasal inhalation was conducted under four air conditions (i.e., temperature of 25 °C or 34 °C with relative humidity [RH] of 30 % and 70 %). The temperature of the nasal mucosa and the thermal and humidity sensations of the inhaled air were assessed in the first experiment. In the second and third experiments, sublimated <em>l</em>-menthol was added to the inhaled air, and the sensations of the inhaled air were evaluated. The temperature of the nasal mucosa was higher in inhaled air at 34 °C with 30 % RH than at 25 °C. The rating for thermal sensation (warm sensation) was the highest at 34 °C and 70 % RH. At both temperatures, the humidity sensation rating was higher in air with 70 % RH than in air with 30 % RH. Linear relationships were observed between the ratings for thermal and humidity sensations under the four conditions (R² = 0.339–0.516). The thermal sensation rating decreased when air at 34 °C was inhaled with <em>l</em>-menthol. A linear relationship was also observed between the ratings for thermal and humidity sensations under this condition (R² = 0.665). These findings suggest that the nasal cavity is critical for the sensation of humidity in an environment in which cold reception via the TRPM8 channel is involved.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"129 ","pages":"Article 104109"},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823541","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}

{"title":"Daily and seasonal features in the hind limb withdrawal latency of tegus (Salvator merianae) and green iguanas (Iguana iguana)","authors":"Shayne Pedrozo Bisetto,&nbsp;André Augusto Justo,&nbsp;Thais Feres Bressan,&nbsp;Willian Petroni Leal,&nbsp;Adriano Bonfim Carregaro","doi":"10.1016/j.jtherbio.2025.104099","DOIUrl":"10.1016/j.jtherbio.2025.104099","url":null,"abstract":"<div><div>This study evaluated the effects of daytime and season on the limb withdrawal latency time (LWLT) of lizards. Captive-raised, juvenile tegus and green iguanas (n = 6 each) were housed indoors, where a temperature gradient (27–40 °C) and a constant photoperiod (12-h cycle) were provided. Body temperatures and LWLT were measured at 00:00 h, 06:00 h, 12:00 h and 18:00 h over winter, spring, summer and fall. Both lizards had body temperatures lower than 30 °C at 00:00 h/06:00 h and higher than 30 °C at 12:00 h/18:00 h. In spring, tegus had higher body temperatures than in fall at 12:00 h (34.2 ± 1.4 °C versus 30.3 ± 1.9 °C) and in winter at 18:00 h (33.6 ± 1.2 °C versus 30.4 ± 1.0 °C); iguanas presented increased body temperatures at 00:00 h in summer (28.1 °C [28.0–28.2]) compared to winter (25.5 °C [25.3–25.7]). The LWLT of tegus was elevated at 06:00 h compared to 12:00 h and 18:00 h in winter (12.0 ± 3.8 s versus 7.6 ± 1.8 s and 7.0 ± 3.2 s, respectively), spring (12.0 ± 2.7 s versus 7.4 ± 3.1 s and 7.7 ± 1.3 s, respectively) and fall (14.8 ± 2.3 s versus 10.2 ± 1.2 s and 8.9 ± 1.9 s, respectively). Iguanas showed season-related fluctuations in LWLT, with higher values at 18:00 h in winter (15.5 ± 6.1 s) and fall (14.8 ± 2.6 s) than in summer (9.2 ± 1.9 s), as well as higher at 00:00 h (16.6 ± 5.4 s) and 12:00 h (15.4 ± 3.9 s) in spring than in summer (11.0 ± 2.9 s and 9.3 ± 1.3 s, respectively). Body temperature was poorly correlated with LWLT in tegus (r_s = - 0.292; p = 0.003) and iguanas (r_s = - 0.143; p = 0.162). Researchers should consider circadian and circannual rhythms as potential biases in antinociception-focused lizard studies.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"129 ","pages":"Article 104099"},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785872","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}

{"title":"How quickly do brook trout lose long-term thermal acclimation?","authors":"M.J. O'Donnell ,&nbsp;A.M. Regish ,&nbsp;S.D. McCormick ,&nbsp;B.H. Letcher","doi":"10.1016/j.jtherbio.2025.104103","DOIUrl":"10.1016/j.jtherbio.2025.104103","url":null,"abstract":"<div><div>Abundances of coldwater adapted stream fish populations are declining largely due to anthropogenic influences, including increased temperature. To persist in streams with unsuitable thermal habitat, fish must move to coldwater patches, acclimate, or adapt to water temperatures above thermal optima. Brook trout, a coldwater adapted salmonid, has previously displayed physiological plasticity and the ability for reversible thermal acclimation when reared at higher temperatures. However, because stream temperatures are not static, it is important to explore the rate at which thermal acclimation occurs to evaluate whether prior thermal experience will influence future thermal performance. To determine the temporal scale in loss of thermal acclimation as water temperatures cool, we acclimated brook trout to three thermal regimes: +0 °C (ambient; mimicking the daily average water temperature of a nearby long-term study site), as well as +2 °C and +4 °C above ambient. After 2 years of being reared under those conditions, fish from the warmer treatments were moved to a common, colder temperature (ambient). We then used critical thermal maximum to measure the loss in acclimation response of fish from each treatment over time. We found that regardless of initial acclimation temperature, thermal tolerance of warm acclimated fish decreased rapidly for 1 week, then gradually decreased, and was completely lost within 42 days. This gradual loss of acclimation may be valuable to persistence in warmer streams and will be important to include in models of the impact climate change has on brook trout and other aquatic ectotherms with significant thermal plasticity.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"129 ","pages":"Article 104103"},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143776728","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}

{"title":"Legs are primary heat exchangers in nest-bound White storks","authors":"Julián Cabello-Vergel ,&nbsp;José A. Masero ,&nbsp;Auxiliadora Villegas ,&nbsp;Jorge S. Gutiérrez","doi":"10.1016/j.jtherbio.2025.104105","DOIUrl":"10.1016/j.jtherbio.2025.104105","url":null,"abstract":"<div><div>Endotherms must manage heat fluxes under changing environmental conditions to maintain safe core body temperatures. An important mechanism for energy management is peripheral heterothermy. Despite growing evidence that birds’ bare body parts such as legs and bills can serve as effective thermal windows (i.e. areas of controlled heat loss), the function and importance of such body regions likely differ across species and ecological contexts. This might be particularly important for birds breeding in exposed locations (such as open nests) that promote rapid heat gain and loss. Combining thermal imaging with weather data we assess the thermoregulatory role of various body parts (eye region, bill, gular skin, and legs) in White storks (<em>Ciconia ciconia</em>) breeding in Southwestern Iberia. In doing so, we also test whether adults and nestlings differ in their capacity to modulate surface temperature (T_surf) through these regions across a wide range of environmental temperatures (T_air = 15–38 °C). Our analyses showed that White storks finely tuned T_surf of all the regions tested in response to T_air, with nestlings showing an overall poorer capacity to modulate T_surf under colder conditions (T_air &lt; 20 °C). Notably, only the legs served as effective thermal windows in adult storks, with dry heat loss through these appendages representing up to 70 % of basal metabolic rate. Thus, passive heat exchange through the legs can significantly contribute to alleviate heat stress in nest-bound White storks. Yet, further work is needed to better understand the ontogeny of thermal windows in the face of climate change.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"129 ","pages":"Article 104105"},"PeriodicalIF":2.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815967","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}