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DOI	10.1016/j.jtherbio.2024.103834
	How turtles keep their cool: Seasonal and diel basking patterns in a tropical turtle
	Kidman, Rosie; Mcknight, Donald T.; Schwarzkopf, Lin; Nordberg, Eric J.
发表日期	2024
ISSN	0306-4565
EISSN	1879-0992
起始页码	121
卷号	121
英文摘要	Behavioural thermoregulation by ectotherms is an important mechanism for maintaining body temperatures to optimise physiological performance. Experimental studies suggest that nocturnal basking by Krefft's river turtles (Emydura macquarii krefftii) in the tropics may allow them to avoid high water temperatures, however, this hypothesis has yet to be tested in the field. In this study, we examined the influence of environmental temperature on seasonal and diel patterns of basking in E. m. krefftii in tropical north Queensland, Australia. Wildlife cameras were used to document turtle basking events for seven consecutive days and nights for each month over a year (April 2020-March 2021). Air and water temperatures were recorded simultaneously using temperature loggers. We used a negative binomial mixed effects model to compare mean basking durations (min) occurring among four environmental temperature categories based on population thermal preference (26 degrees C): 1) air temperature above and water temperature below preferred temperature; 2) air temperature below and water temperature above preferred temperature; 3) air and water temperatures both above preferred temperature; and 4) air and water temperatures both below preferred temperature. Basking behaviour was influenced significantly by the relationship between air and water temperature. During the day, turtles spent significantly less time basking when both air and water temperatures were above their preferred temperatures. Conversely, at night, turtles spent significantly more time basking when water temperatures were warm and air temperatures were cool relative to their preferred temperature. This study adds to the growing body of work indicating pronounced heat avoidance as a thermoregulatory strategy among tropical reptile populations.
英文关键词	Australia; Ectotherm; Tropical reptile; Nocturnal basking; Thermoregulation; Thermoregulatory cooling; Heat avoidance
语种	英语
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Zoology
WOS类目	Biology ; Zoology
WOS记录号	WOS:001234937600001
来源期刊	JOURNAL OF THERMAL BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299191
作者单位	University of New England; James Cook University
推荐引用方式 GB/T 7714	Kidman, Rosie,Mcknight, Donald T.,Schwarzkopf, Lin,et al. How turtles keep their cool: Seasonal and diel basking patterns in a tropical turtle[J],2024,121.
APA	Kidman, Rosie,Mcknight, Donald T.,Schwarzkopf, Lin,&Nordberg, Eric J..(2024).How turtles keep their cool: Seasonal and diel basking patterns in a tropical turtle.JOURNAL OF THERMAL BIOLOGY,121.
MLA	Kidman, Rosie,et al."How turtles keep their cool: Seasonal and diel basking patterns in a tropical turtle".JOURNAL OF THERMAL BIOLOGY 121(2024).