Jessalyn M. Aretz , Deby Cassill , Stephen M. Deban , Alessandro Catenazzi , Alison M. Gainsbury
{"title":"佛罗里达中部地区原生蝌蚪的热生态和游泳性能","authors":"Jessalyn M. Aretz , Deby Cassill , Stephen M. Deban , Alessandro Catenazzi , Alison M. Gainsbury","doi":"10.1016/j.jtherbio.2025.104237","DOIUrl":null,"url":null,"abstract":"<div><div>Urbanization and climate warming have contributed to global amphibian declines in recent decades, and amphibians are particularly vulnerable to warming because temperature influences their physiological processes across all life stages. Tadpole responses to warming in tropical climates are relatively understudied, and previous studies demonstrated species-specific responses to warming temperature. Warming ponds may quicken tadpole development and increase thermal tolerances, but increasing local temperatures push populations towards their physiological limits. Specifically, baseline responses of thermal ecology traits of pinewoods tree frog (<em>Dryophytes femoralis</em>) tadpoles in Florida to warming temperature are unknown. Herein, we tested if the thermal ecology and swimming performance of a native Florida tadpole varied with rearing temperature to determine if these traits exhibit plasticity. We collected eggs from wild populations of <em>D. femoralis</em> in Central Florida and utilized common garden experiments to assess critical thermal maximum (CT<sub>max</sub>), minimum (CT<sub>min</sub>), thermal safety margins (T<sub>sm</sub>), thermal preference (T<sub>set</sub>), and swimming performance across different rearing temperatures. Importantly, variation in traits was better explained by clutch ID, indicating the role of maternal effects. Increases in critical thermal thresholds and thermal safety margins at warmer rearing temperatures suggest plasticity in these traits and potential to adapt to rising temperatures. While thermal preference appeared fixed, complex interactions between rearing temperature and test temperature predicted swimming performance. These results demonstrate that although <em>D. femoralis</em> tadpoles have the ability to adjust their thermal thresholds – the responses of other critical traits, like swimming performance are less clear, at least within the temperature range tested in this study. However, warming ponds may soon exceed the temperatures tadpoles can tolerate, even via phenotypic plasticity. Our findings emphasize the need to prioritize the conservation of cooler habitats and fill in gaps in our understanding of species-specific responses to a warming environment, to ensure the survival of vulnerable amphibian populations.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"132 ","pages":"Article 104237"},"PeriodicalIF":2.9000,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thermal ecology and swimming performance of native tadpoles Dryophytes femoralis in central Florida\",\"authors\":\"Jessalyn M. Aretz , Deby Cassill , Stephen M. Deban , Alessandro Catenazzi , Alison M. Gainsbury\",\"doi\":\"10.1016/j.jtherbio.2025.104237\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Urbanization and climate warming have contributed to global amphibian declines in recent decades, and amphibians are particularly vulnerable to warming because temperature influences their physiological processes across all life stages. Tadpole responses to warming in tropical climates are relatively understudied, and previous studies demonstrated species-specific responses to warming temperature. Warming ponds may quicken tadpole development and increase thermal tolerances, but increasing local temperatures push populations towards their physiological limits. Specifically, baseline responses of thermal ecology traits of pinewoods tree frog (<em>Dryophytes femoralis</em>) tadpoles in Florida to warming temperature are unknown. Herein, we tested if the thermal ecology and swimming performance of a native Florida tadpole varied with rearing temperature to determine if these traits exhibit plasticity. We collected eggs from wild populations of <em>D. femoralis</em> in Central Florida and utilized common garden experiments to assess critical thermal maximum (CT<sub>max</sub>), minimum (CT<sub>min</sub>), thermal safety margins (T<sub>sm</sub>), thermal preference (T<sub>set</sub>), and swimming performance across different rearing temperatures. Importantly, variation in traits was better explained by clutch ID, indicating the role of maternal effects. Increases in critical thermal thresholds and thermal safety margins at warmer rearing temperatures suggest plasticity in these traits and potential to adapt to rising temperatures. While thermal preference appeared fixed, complex interactions between rearing temperature and test temperature predicted swimming performance. These results demonstrate that although <em>D. femoralis</em> tadpoles have the ability to adjust their thermal thresholds – the responses of other critical traits, like swimming performance are less clear, at least within the temperature range tested in this study. However, warming ponds may soon exceed the temperatures tadpoles can tolerate, even via phenotypic plasticity. Our findings emphasize the need to prioritize the conservation of cooler habitats and fill in gaps in our understanding of species-specific responses to a warming environment, to ensure the survival of vulnerable amphibian populations.</div></div>\",\"PeriodicalId\":17428,\"journal\":{\"name\":\"Journal of thermal biology\",\"volume\":\"132 \",\"pages\":\"Article 104237\"},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2025-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of thermal biology\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0306456525001949\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of thermal biology","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306456525001949","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOLOGY","Score":null,"Total":0}
Thermal ecology and swimming performance of native tadpoles Dryophytes femoralis in central Florida
Urbanization and climate warming have contributed to global amphibian declines in recent decades, and amphibians are particularly vulnerable to warming because temperature influences their physiological processes across all life stages. Tadpole responses to warming in tropical climates are relatively understudied, and previous studies demonstrated species-specific responses to warming temperature. Warming ponds may quicken tadpole development and increase thermal tolerances, but increasing local temperatures push populations towards their physiological limits. Specifically, baseline responses of thermal ecology traits of pinewoods tree frog (Dryophytes femoralis) tadpoles in Florida to warming temperature are unknown. Herein, we tested if the thermal ecology and swimming performance of a native Florida tadpole varied with rearing temperature to determine if these traits exhibit plasticity. We collected eggs from wild populations of D. femoralis in Central Florida and utilized common garden experiments to assess critical thermal maximum (CTmax), minimum (CTmin), thermal safety margins (Tsm), thermal preference (Tset), and swimming performance across different rearing temperatures. Importantly, variation in traits was better explained by clutch ID, indicating the role of maternal effects. Increases in critical thermal thresholds and thermal safety margins at warmer rearing temperatures suggest plasticity in these traits and potential to adapt to rising temperatures. While thermal preference appeared fixed, complex interactions between rearing temperature and test temperature predicted swimming performance. These results demonstrate that although D. femoralis tadpoles have the ability to adjust their thermal thresholds – the responses of other critical traits, like swimming performance are less clear, at least within the temperature range tested in this study. However, warming ponds may soon exceed the temperatures tadpoles can tolerate, even via phenotypic plasticity. Our findings emphasize the need to prioritize the conservation of cooler habitats and fill in gaps in our understanding of species-specific responses to a warming environment, to ensure the survival of vulnerable amphibian populations.
期刊介绍:
The Journal of Thermal Biology publishes articles that advance our knowledge on the ways and mechanisms through which temperature affects man and animals. This includes studies of their responses to these effects and on the ecological consequences. Directly relevant to this theme are:
• The mechanisms of thermal limitation, heat and cold injury, and the resistance of organisms to extremes of temperature
• The mechanisms involved in acclimation, acclimatization and evolutionary adaptation to temperature
• Mechanisms underlying the patterns of hibernation, torpor, dormancy, aestivation and diapause
• Effects of temperature on reproduction and development, growth, ageing and life-span
• Studies on modelling heat transfer between organisms and their environment
• The contributions of temperature to effects of climate change on animal species and man
• Studies of conservation biology and physiology related to temperature
• Behavioural and physiological regulation of body temperature including its pathophysiology and fever
• Medical applications of hypo- and hyperthermia
Article types:
• Original articles
• Review articles