雪橇犬运动前后的热关系。

Kailey D. Paul, Ana Gabriela Jiménez
{"title":"雪橇犬运动前后的热关系。","authors":"Kailey D. Paul,&nbsp;Ana Gabriela Jiménez","doi":"10.1002/jez.2809","DOIUrl":null,"url":null,"abstract":"<p>Regulation of internal body temperature (T<sub>b</sub>), or thermoregulation, is an evolutionarily conserved trait that places demand on basal metabolic rate of endothermic animals. Across species, athletes generate increased quantities of heat in comparison to their nonathletic counterparts and, therefore, must mediate physiological unbalance by upregulating the effectiveness of their heat dissipation abilities. Canine athletes are no exception to this phenomenon, however, with literature denoting body temperatures lower than nonathletic canines, it is clear they must possess adaptations to mitigate this demand. With VO<sub>2</sub> max measurements of more than 200 mL/kg/min in sled dogs with mild training to 300 mL/kg/min in highly trained animals, sled dogs are a prime example of athleticism in canines. Seeking to determine correlations between T<sub>ear</sub> and body mass, morphology, and age of canine athletes, core body temperature (T<sub>b</sub>) was measured with an instant ear thermometer, using T<sub>ear</sub> as a correlate before and after a 2-mile run. In addition, we employed thermal imaging analysis to capture body-wide heat dissipation patterns in sled dogs, and focused on thermal variation of mouth (T<sub>mouth</sub>), nose (T<sub>nose</sub>), and eyes (T<sub>eye</sub>). Furthermore, we looked at correlations between thermal variability across these four tissues and head morphology of each dog. T<sub>ear</sub> was consistently the highest temperature across all tissues measured, with a 1.5°C increase between pre- to postexercise (<i>p</i> &lt; 0.001). Thermal imaging revealed significant positive correlations between T<sub>mouth</sub> and body mass 15 min postexercise (<i>p</i> = 0.0023) as well as significantly negative correlations between T<sub>nose</sub> and body mass at before exercise (<i>p</i> = 0.0468), T<sub>eye</sub> and nose length after run (<i>p</i> = 0.0076), and T<sub>mouth</sub> and nose length after run (<i>p</i> = 0.0110). As body temperature rises during exercise, it becomes increasingly important to regulate blood flow throughout the body to supply working tissues with oxygen. This demand is offset by the role of the snout in evaporative cooling through panting, functioning as a prime location for heat dissipation and therefore maintaining significant relationships with many other vascularized tissues.</p>","PeriodicalId":15711,"journal":{"name":"Journal of experimental zoology. Part A, Ecological and integrative physiology","volume":"341 5","pages":"606-614"},"PeriodicalIF":1.9000,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thermal relations in sled dogs before and after exercise\",\"authors\":\"Kailey D. Paul,&nbsp;Ana Gabriela Jiménez\",\"doi\":\"10.1002/jez.2809\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Regulation of internal body temperature (T<sub>b</sub>), or thermoregulation, is an evolutionarily conserved trait that places demand on basal metabolic rate of endothermic animals. Across species, athletes generate increased quantities of heat in comparison to their nonathletic counterparts and, therefore, must mediate physiological unbalance by upregulating the effectiveness of their heat dissipation abilities. Canine athletes are no exception to this phenomenon, however, with literature denoting body temperatures lower than nonathletic canines, it is clear they must possess adaptations to mitigate this demand. With VO<sub>2</sub> max measurements of more than 200 mL/kg/min in sled dogs with mild training to 300 mL/kg/min in highly trained animals, sled dogs are a prime example of athleticism in canines. Seeking to determine correlations between T<sub>ear</sub> and body mass, morphology, and age of canine athletes, core body temperature (T<sub>b</sub>) was measured with an instant ear thermometer, using T<sub>ear</sub> as a correlate before and after a 2-mile run. In addition, we employed thermal imaging analysis to capture body-wide heat dissipation patterns in sled dogs, and focused on thermal variation of mouth (T<sub>mouth</sub>), nose (T<sub>nose</sub>), and eyes (T<sub>eye</sub>). Furthermore, we looked at correlations between thermal variability across these four tissues and head morphology of each dog. T<sub>ear</sub> was consistently the highest temperature across all tissues measured, with a 1.5°C increase between pre- to postexercise (<i>p</i> &lt; 0.001). Thermal imaging revealed significant positive correlations between T<sub>mouth</sub> and body mass 15 min postexercise (<i>p</i> = 0.0023) as well as significantly negative correlations between T<sub>nose</sub> and body mass at before exercise (<i>p</i> = 0.0468), T<sub>eye</sub> and nose length after run (<i>p</i> = 0.0076), and T<sub>mouth</sub> and nose length after run (<i>p</i> = 0.0110). As body temperature rises during exercise, it becomes increasingly important to regulate blood flow throughout the body to supply working tissues with oxygen. This demand is offset by the role of the snout in evaporative cooling through panting, functioning as a prime location for heat dissipation and therefore maintaining significant relationships with many other vascularized tissues.</p>\",\"PeriodicalId\":15711,\"journal\":{\"name\":\"Journal of experimental zoology. Part A, Ecological and integrative physiology\",\"volume\":\"341 5\",\"pages\":\"606-614\"},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-03-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of experimental zoology. Part A, Ecological and integrative physiology\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/jez.2809\",\"RegionNum\":3,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ZOOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of experimental zoology. Part A, Ecological and integrative physiology","FirstCategoryId":"99","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jez.2809","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ZOOLOGY","Score":null,"Total":0}
引用次数: 0

摘要

调节体内温度(Tb)或体温调节是一种进化保守的特性,它对内热动物的基础代谢率提出了要求。在所有物种中,运动员产生的热量都比非运动员多,因此必须通过提高散热能力的有效性来调节生理失衡。犬类运动员也不例外,然而,有文献表明,犬类运动员的体温低于非运动型犬类,很明显,他们必须具备适应能力来缓解这种需求。经过轻微训练的雪橇犬的最大 VO2 测量值超过 200 毫升/千克/分钟,而训练有素的动物则达到 300 毫升/千克/分钟,因此雪橇犬是犬类运动能力的典型代表。为了确定泪液与犬科运动员的体重、形态和年龄之间的相关性,我们使用即时耳温计测量了核心体温(Tb),并将泪液作为 2 英里跑步前后的相关指标。此外,我们还利用热成像分析捕捉雪橇犬全身的散热模式,并重点关注嘴(Tmouth)、鼻子(Tnose)和眼睛(Teye)的热变化。此外,我们还研究了这四个组织的热变化与每只雪橇犬头部形态之间的相关性。在所有测量的组织中,泪水的温度始终最高,从运动前到运动后温度上升了 1.5°C(运动后 15 分钟,嘴和体重之间的相关性为 p = 0.0023),运动前 Tnose 和体重之间的相关性为显著负相关(p = 0.0468),跑步后 Teye 和鼻子长度之间的相关性为显著负相关(p = 0.0076),跑步后 Tmouth 和鼻子长度之间的相关性为显著负相关(p = 0.0110)。随着运动中体温的升高,调节全身血流量以向工作组织提供氧气变得越来越重要。鼻腔通过喘气起到蒸发冷却的作用,是散热的主要场所,因此与许多其他血管组织保持着重要的关系,从而抵消了这种需求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Thermal relations in sled dogs before and after exercise

Regulation of internal body temperature (Tb), or thermoregulation, is an evolutionarily conserved trait that places demand on basal metabolic rate of endothermic animals. Across species, athletes generate increased quantities of heat in comparison to their nonathletic counterparts and, therefore, must mediate physiological unbalance by upregulating the effectiveness of their heat dissipation abilities. Canine athletes are no exception to this phenomenon, however, with literature denoting body temperatures lower than nonathletic canines, it is clear they must possess adaptations to mitigate this demand. With VO2 max measurements of more than 200 mL/kg/min in sled dogs with mild training to 300 mL/kg/min in highly trained animals, sled dogs are a prime example of athleticism in canines. Seeking to determine correlations between Tear and body mass, morphology, and age of canine athletes, core body temperature (Tb) was measured with an instant ear thermometer, using Tear as a correlate before and after a 2-mile run. In addition, we employed thermal imaging analysis to capture body-wide heat dissipation patterns in sled dogs, and focused on thermal variation of mouth (Tmouth), nose (Tnose), and eyes (Teye). Furthermore, we looked at correlations between thermal variability across these four tissues and head morphology of each dog. Tear was consistently the highest temperature across all tissues measured, with a 1.5°C increase between pre- to postexercise (p < 0.001). Thermal imaging revealed significant positive correlations between Tmouth and body mass 15 min postexercise (p = 0.0023) as well as significantly negative correlations between Tnose and body mass at before exercise (p = 0.0468), Teye and nose length after run (p = 0.0076), and Tmouth and nose length after run (p = 0.0110). As body temperature rises during exercise, it becomes increasingly important to regulate blood flow throughout the body to supply working tissues with oxygen. This demand is offset by the role of the snout in evaporative cooling through panting, functioning as a prime location for heat dissipation and therefore maintaining significant relationships with many other vascularized tissues.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Journal of experimental zoology. Part A, Ecological and integrative physiology
Journal of experimental zoology. Part A, Ecological and integrative physiology Biochemistry, Genetics and Molecular Biology-Molecular Biology
CiteScore
4.90
自引率
3.60%
发文量
0
期刊介绍: The Journal of Experimental Zoology – A publishes articles at the interface between Development, Physiology, Ecology and Evolution. Contributions that help to reveal how molecular, functional and ecological variation relate to one another are particularly welcome. The Journal publishes original research in the form of rapid communications or regular research articles, as well as perspectives and reviews on topics pertaining to the scope of the Journal. Acceptable articles are limited to studies on animals.
期刊最新文献
Regulation of Insect Hormones in Different Types of Diapause in Chilo Partellus (Swinhoe). Melatonin Alters Preference to Move Toward Monochromatic Lights in Female Syrian Hamsters: A Behavior Associated With Circadian Rhythm. Morphological and Histological Studies of the Bronchial and Parabronchial System of the White Pekin Duck (Anas platyrhynchos). Issue Information Postprandial Sleep in Short-Sleeping Mexican Cavefish
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1