Effects of constant light and dark conditions on the locomotor activity, body mass, and body temperature rhythms of Eurasian Tree Sparrows (Passer montanus)
Light is an essential environmental cue influencing the endogenous circadian clocks that regulate behavioral and physiological processes in animals. Despite extensive research on the circadian rhythms of avian behavior and physiology, the mechanisms by which they adapt and adjust to abnormal photope...
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KeAi Communications Co., Ltd.
2023-01-01
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| Series: | Avian Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S205371662300052X |
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| author | Lirong Zuo Ibrahim M. Ahmad Yuanyuan Liu Limin Wang Shu Fang Dongming Li |
| author_facet | Lirong Zuo Ibrahim M. Ahmad Yuanyuan Liu Limin Wang Shu Fang Dongming Li |
| author_sort | Lirong Zuo |
| collection | DOAJ |
| description | Light is an essential environmental cue influencing the endogenous circadian clocks that regulate behavioral and physiological processes in animals. Despite extensive research on the circadian rhythms of avian behavior and physiology, the mechanisms by which they adapt and adjust to abnormal photoperiod conditions, such as artificial light, have yet to be fully elucidated. Here, the circadian rhythms of the body mass, activity, and core and peripheral body temperatures of the Eurasian Tree Sparrow (Passer montanus, ETS)—a diurnal passerine—were examined under three different lighting conditions: constant light (LL), constant darkness (DD), and normal light–dark cycles (LD). Our results showed that the activity, body mass, core, tarsometatarsus, and eye temperatures of the ETSs varied significantly with treatment, time, and the interaction between treatment and time; however, there was no significant change in body mass in response to the interaction between time and treatment. Under LD conditions, the ETSs exhibited significant circadian rhythms in activity and core, tarsometatarsus, and eye temperatures. Under LL conditions, only the core temperature exhibited significant rhythmicity. Under DD conditions, there were no significant circadian rhythms in activity, body mass, and eye temperature; however, the core and tarsometatarsus temperatures remained rhythmic. Our results indicate that the core body temperature rhythm of ETS is endogenous and can be maintained under abnormal photoperiods. In contrast, the activity and body surface temperature, uncoupled from the core body temperature under abnormal photoperiod conditions, strongly depend on light. These results differ from those of other diurnal avian species, suggesting a unique coping mechanism of ETS in response to an abnormal photoperiod. |
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| issn | 2053-7166 |
| language | English |
| last_indexed | 2024-03-12T01:38:36Z |
| publishDate | 2023-01-01 |
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| series | Avian Research |
| spelling | doaj.art-dd37acaa06514af0916232c19b0a198d2023-09-11T04:16:59ZengKeAi Communications Co., Ltd.Avian Research2053-71662023-01-0114100126Effects of constant light and dark conditions on the locomotor activity, body mass, and body temperature rhythms of Eurasian Tree Sparrows (Passer montanus)Lirong Zuo0Ibrahim M. Ahmad1Yuanyuan Liu2Limin Wang3Shu Fang4Dongming Li5Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei Province, China; Hebei Collaborative Innovation Center for Eco-Environment, Hebei Normal University, Shijiazhuang, 050024, ChinaHebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei Province, China; Hebei Collaborative Innovation Center for Eco-Environment, Hebei Normal University, Shijiazhuang, 050024, ChinaHebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei Province, ChinaHebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei Province, China; Hebei Collaborative Innovation Center for Eco-Environment, Hebei Normal University, Shijiazhuang, 050024, ChinaHebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei Province, ChinaHebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei Province, China; Hebei Collaborative Innovation Center for Eco-Environment, Hebei Normal University, Shijiazhuang, 050024, China; Corresponding author. Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei Province, China.Light is an essential environmental cue influencing the endogenous circadian clocks that regulate behavioral and physiological processes in animals. Despite extensive research on the circadian rhythms of avian behavior and physiology, the mechanisms by which they adapt and adjust to abnormal photoperiod conditions, such as artificial light, have yet to be fully elucidated. Here, the circadian rhythms of the body mass, activity, and core and peripheral body temperatures of the Eurasian Tree Sparrow (Passer montanus, ETS)—a diurnal passerine—were examined under three different lighting conditions: constant light (LL), constant darkness (DD), and normal light–dark cycles (LD). Our results showed that the activity, body mass, core, tarsometatarsus, and eye temperatures of the ETSs varied significantly with treatment, time, and the interaction between treatment and time; however, there was no significant change in body mass in response to the interaction between time and treatment. Under LD conditions, the ETSs exhibited significant circadian rhythms in activity and core, tarsometatarsus, and eye temperatures. Under LL conditions, only the core temperature exhibited significant rhythmicity. Under DD conditions, there were no significant circadian rhythms in activity, body mass, and eye temperature; however, the core and tarsometatarsus temperatures remained rhythmic. Our results indicate that the core body temperature rhythm of ETS is endogenous and can be maintained under abnormal photoperiods. In contrast, the activity and body surface temperature, uncoupled from the core body temperature under abnormal photoperiod conditions, strongly depend on light. These results differ from those of other diurnal avian species, suggesting a unique coping mechanism of ETS in response to an abnormal photoperiod.http://www.sciencedirect.com/science/article/pii/S205371662300052XEurasian Tree SparrowActivityBody massBody temperatureCircadian rhythm |
| spellingShingle | Lirong Zuo Ibrahim M. Ahmad Yuanyuan Liu Limin Wang Shu Fang Dongming Li Effects of constant light and dark conditions on the locomotor activity, body mass, and body temperature rhythms of Eurasian Tree Sparrows (Passer montanus) Avian Research Eurasian Tree Sparrow Activity Body mass Body temperature Circadian rhythm |
| title | Effects of constant light and dark conditions on the locomotor activity, body mass, and body temperature rhythms of Eurasian Tree Sparrows (Passer montanus) |
| title_full | Effects of constant light and dark conditions on the locomotor activity, body mass, and body temperature rhythms of Eurasian Tree Sparrows (Passer montanus) |
| title_fullStr | Effects of constant light and dark conditions on the locomotor activity, body mass, and body temperature rhythms of Eurasian Tree Sparrows (Passer montanus) |
| title_full_unstemmed | Effects of constant light and dark conditions on the locomotor activity, body mass, and body temperature rhythms of Eurasian Tree Sparrows (Passer montanus) |
| title_short | Effects of constant light and dark conditions on the locomotor activity, body mass, and body temperature rhythms of Eurasian Tree Sparrows (Passer montanus) |
| title_sort | effects of constant light and dark conditions on the locomotor activity body mass and body temperature rhythms of eurasian tree sparrows passer montanus |
| topic | Eurasian Tree Sparrow Activity Body mass Body temperature Circadian rhythm |
| url | http://www.sciencedirect.com/science/article/pii/S205371662300052X |
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