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Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology最新文献

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Respiratory pattern of the Southern elephant seal (Mirounga leonina) resting on land: an analysis of ontogenetic development. 栖息在陆地上的南象海豹（miounga leonina）的呼吸模式：个体发育分析。
IF 1.6 3区 生物学
Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2026-05-04 DOI: 10.1007/s00360-026-01666-z
Marta Carolina De León, Randall W Davis, Mirtha Noemí Lewis, Diego H Rodríguez, Mariela Dassis
{"title":"Respiratory pattern of the Southern elephant seal (Mirounga leonina) resting on land: an analysis of ontogenetic development.","authors":"Marta Carolina De León, Randall W Davis, Mirtha Noemí Lewis, Diego H Rodríguez, Mariela Dassis","doi":"10.1007/s00360-026-01666-z","DOIUrl":"https://doi.org/10.1007/s00360-026-01666-z","url":null,"abstract":"<p><p>Understanding the respiratory patterns of marine mammals on land can provide insight into their respiration and breath-hold diving physiology at sea. In this study, we analyzed the respiratory patterns of southern elephant seals (Mirounga leonina) resting on land, emphasizing ontogenetic variations. We observed 478 elephant seals at Península Valdés, Argentina, and recorded 16,626 respiratory cycles through direct observation and video analysis to evaluate differences in breathing phases: inspiration (INSP), post-inspiratory pause (PIP), expiration (EXP), and post-expiratory apnea (PEA). All seals displayed episodic breathing patterns, with the PIP phase significantly longer (4.3 ± 6.67 s) compared to INSP and EXP (1.5 ± 1.30 s and 1.2 ± 1.1 s, respectively). We found respiratory cycles were longer and frequencies lower in older seals, corresponding to allometric scaling with body size and physiological maturity. PEAs were infrequent, representing only 1.6% of cycles, but their occurrence and durations increased with age, possibly consistent with greater oxygen storage capacity. Additionally, we found ground temperature influenced respiratory phases, particularly shortening the EXP and INSP duration at higher temperatures, indicating a potential thermoregulatory adaptation. State of wakefulness also influenced PEA occurrence, with a higher probability of occurrence during a presumably asleep state. Our findings contribute to understanding the physiological adaptations enabling the aquatic lifestyle of elephant seals and underscore substantial developmental changes in respiratory control during terrestrial resting periods.</p>","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147823976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Baseline estrogenic activity in juvenile brown trout liver and primary hepatocytes: integrated molecular and immunohistochemical analysis. 幼鱼肝脏和原代肝细胞的基线雌激素活性：综合分子和免疫组织化学分析。
IF 1.6 3区 生物学
Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2026-04-01 DOI: 10.1007/s00360-026-01657-0
Inês C S Barbosa, Fernanda Malhão, Eduardo Rocha, Tânia Vieira Madureira
{"title":"Baseline estrogenic activity in juvenile brown trout liver and primary hepatocytes: integrated molecular and immunohistochemical analysis.","authors":"Inês C S Barbosa, Fernanda Malhão, Eduardo Rocha, Tânia Vieira Madureira","doi":"10.1007/s00360-026-01657-0","DOIUrl":"https://doi.org/10.1007/s00360-026-01657-0","url":null,"abstract":"","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147596581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Energetic consequences of single and repeated freezing in the intertidal mussel, Mytilus trossulus. 潮间带贻贝的单次和反复冻结的能量后果。
IF 1.6 3区 生物学
Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2026-04-01 DOI: 10.1007/s00360-026-01656-1
Josh Chia Chi Yang, Katie E Marshall
{"title":"Energetic consequences of single and repeated freezing in the intertidal mussel, Mytilus trossulus.","authors":"Josh Chia Chi Yang, Katie E Marshall","doi":"10.1007/s00360-026-01656-1","DOIUrl":"https://doi.org/10.1007/s00360-026-01656-1","url":null,"abstract":"","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147596565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
IGF-mediated glucose signalling is retained in adult naked mole-rats. igf介导的葡萄糖信号在成年裸鼹鼠中保留。
IF 1.6 3区 生物学
Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2026-03-30 DOI: 10.1007/s00360-026-01661-4
Mohammad Ojaghi, Matthew E Pamenter
{"title":"IGF-mediated glucose signalling is retained in adult naked mole-rats.","authors":"Mohammad Ojaghi, Matthew E Pamenter","doi":"10.1007/s00360-026-01661-4","DOIUrl":"https://doi.org/10.1007/s00360-026-01661-4","url":null,"abstract":"","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147576724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Effects of natural deep hypothermia on cognitive abilities in mammals: hibernators and neonates. 自然深度低温对哺乳动物认知能力的影响：冬眠动物和新生儿。
IF 1.6 3区 生物学
Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2026-03-16 DOI: 10.1007/s00360-026-01662-3
Richard W Hill
{"title":"Effects of natural deep hypothermia on cognitive abilities in mammals: hibernators and neonates.","authors":"Richard W Hill","doi":"10.1007/s00360-026-01662-3","DOIUrl":"https://doi.org/10.1007/s00360-026-01662-3","url":null,"abstract":"","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147470204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Inhibition of daily torpor in mice requires calories, not just feeding: a potential role for GLP-1. 抑制小鼠的日常昏睡需要卡路里，而不仅仅是喂养：GLP-1的潜在作用。
IF 1.6 3区 生物学
Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2026-03-10 DOI: 10.1007/s00360-025-01649-6
Gwyneth M McLear, Anika R Kakarla, Camryn E Taylor, Steven J Swoap
{"title":"Inhibition of daily torpor in mice requires calories, not just feeding: a potential role for GLP-1.","authors":"Gwyneth M McLear, Anika R Kakarla, Camryn E Taylor, Steven J Swoap","doi":"10.1007/s00360-025-01649-6","DOIUrl":"https://doi.org/10.1007/s00360-025-01649-6","url":null,"abstract":"","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147437985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Effect of a helox atmosphere on the thermal, metabolic and hygric physiology of the scincid lizard Egernia kingii. 高温环境对埃及蜥蜴热、代谢和水分生理的影响。
IF 1.6 3区 生物学
Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2026-03-10 DOI: 10.1007/s00360-026-01658-z
Christine Elizabeth Cooper, Philip Carew Withers
{"title":"Effect of a helox atmosphere on the thermal, metabolic and hygric physiology of the scincid lizard Egernia kingii.","authors":"Christine Elizabeth Cooper, Philip Carew Withers","doi":"10.1007/s00360-026-01658-z","DOIUrl":"10.1007/s00360-026-01658-z","url":null,"abstract":"","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147438020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Dynamic regulation of histone arginine methylation in anoxic freshwater turtles. 缺氧淡水龟组蛋白精氨酸甲基化的动态调控。
IF 1.6 3区 生物学
Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2026-03-10 DOI: 10.1007/s00360-026-01663-2
Tighe Bloskie, Kenneth B Storey
{"title":"Dynamic regulation of histone arginine methylation in anoxic freshwater turtles.","authors":"Tighe Bloskie, Kenneth B Storey","doi":"10.1007/s00360-026-01663-2","DOIUrl":"10.1007/s00360-026-01663-2","url":null,"abstract":"","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147437947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Orexinergic responses to environmental stressors in the zebrafish gut. 斑马鱼肠道对环境压力的食欲能反应。
IF 1.6 3区 生物学
Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2026-02-24 DOI: 10.1007/s00360-026-01659-y
Yingning Sang, Cameron T Dixon, Christina L Graves
{"title":"Orexinergic responses to environmental stressors in the zebrafish gut.","authors":"Yingning Sang, Cameron T Dixon, Christina L Graves","doi":"10.1007/s00360-026-01659-y","DOIUrl":"https://doi.org/10.1007/s00360-026-01659-y","url":null,"abstract":"","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147286326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Chronic cold induces some similar effects to endurance exercise on body morphometrics and skeletal muscle structure in rats. 慢性感冒对大鼠身体形态和骨骼肌结构的影响与耐力运动相似。
IF 1.6 3区 生物学
Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology Pub Date : 2026-02-24 DOI: 10.1007/s00360-026-01660-5
Michelle Johannsen, Kristin O'Brien, S Ryan Oliver
{"title":"Chronic cold induces some similar effects to endurance exercise on body morphometrics and skeletal muscle structure in rats.","authors":"Michelle Johannsen, Kristin O'Brien, S Ryan Oliver","doi":"10.1007/s00360-026-01660-5","DOIUrl":"10.1007/s00360-026-01660-5","url":null,"abstract":"","PeriodicalId":56033,"journal":{"name":"Journal of Comparative Physiology B-Biochemical Systems and Environmental Physiology","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147286349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
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