干旱区生态环境知识资源中心(Arid): Seasonal variations in locomotor activity rhythm and diurnal activity in the dromedary camel (Camelus dromedarius) under mesic semi-natural conditions

Arid

DOI	10.1080/07420528.2021.1984936
	Seasonal variations in locomotor activity rhythm and diurnal activity in the dromedary camel (Camelus dromedarius) under mesic semi-natural conditions
	Farsi, Hicham; Harti, Driss; Achaaban, Mohamed Rachid; Piro, Mohammed; Ouassat, Mohammed; Challet, Etienne; Pevet, Paul; El Allali, Khalid
通讯作者	El Allali, K (corresponding author)，Hassan IInd Agron & Vet Med Inst, Comparat Anat Unit, Dept Biol & Pharmacol Vet Sci, 10101 Rabat Inst, Rabat 6202, Morocco.
来源期刊	CHRONOBIOLOGY INTERNATIONAL
ISSN	0742-0528
EISSN	1525-6073
出版年	2022
卷号	39 期号:1
英文摘要	The dromedary camel (Camelus dromedarius) is a large ungulate that copes well with the xeric environment of the desert. Its peculiar adaptation to heat and dehydration is well-known. However, its behavior and general activity is far from being completely understood. The present study was carried out to investigate the ecological effect of the various seasons on the locomotor activity (LA) rhythm and diurnal activity of this species. Six adult female camels were maintained under mesic semi-natural conditions of the environment during four periods of 10 days in each season: autumn, winter, spring and summer. In addition, three female camels were used to test the effect of rain on the LA rhythm during a period of 18 days during the winter. The animal's LA was recorded using the locomotion scoring method. Camels displayed a clear 24.0h LA rhythm throughout the four seasons. Activity was intense during Day-time (6-22 fold higher in comparison to night) and dropped or completely disappeared during nighttime. Mean daytime total activity was significantly higher in the summer as compared to winter. Regardless of the season, the active phase in camels coincided with the time of the photophase and thermophase. Furthermore, the daily duration of the time spent active was directly correlated to the seasonal changes of photoperiod. The diurnal activity remained unchanged over the four seasons. For each season, the start and the end of the active phase were synchronized with the onset of sunrise and sunset. At these time periods, temperature remained incredibly stable with a change ranging from 0.002 to 0.210 degrees C; whereas, changes of light intensity were greater and faster with a change from 0.1 to 600 lux representing a variation of 3215-7192 fold in just 25-29 min. Rainfall affected the pattern of the LA rhythm with occurrence of abnormal nocturnal activity during nighttime disturbing nocturnal rest and sleep. Here we show that the dromedary camel exhibits significant seasonal changes of its activity within daylight hours. However, the diurnal pattern remains unchanged regardless of the season; whereas, abnormal nocturnal activity is observed during periods of rain. The activity onset and offset in this species seems to be primarily driven by the changes in light intensity at dusk and dawn.
英文关键词	Camel locomotor activity rhythm seasonal changes diurnality temporal niche switching daily ambient temperature cycle light intensity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000735821300001
WOS关键词	AMBIENT-TEMPERATURE CYCLES ; ORYX ORYX-LEUCORYX ; BODY-TEMPERATURE ; CIRCADIAN-RHYTHMS ; ACTIVITY PATTERNS ; ENTRAINMENT ; WATER ; CLOCK ; BEHAVIOR ; BALANCE
WOS类目	Biology ; Physiology
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Physiology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/376876
作者单位	[Farsi, Hicham; Harti, Driss; Achaaban, Mohamed Rachid; Ouassat, Mohammed; El Allali, Khalid] Hassan IInd Agron & Vet Med Inst, Comparat Anat Unit, Dept Biol & Pharmacol Vet Sci, Rabat, Morocco; [Piro, Mohammed] Hassan IInd Agron & Vet Med Inst, Med & Surg Unit Domest Anim, Dept Med Surg & Reprod, Rabat, Morocco; [Challet, Etienne] CNRS, Inst Cellular & Integrat Neurosci, Strasbourg, France; [Challet, Etienne] Univ Strasbourg, Strasbourg, France
推荐引用方式 GB/T 7714	Farsi, Hicham,Harti, Driss,Achaaban, Mohamed Rachid,et al. Seasonal variations in locomotor activity rhythm and diurnal activity in the dromedary camel (Camelus dromedarius) under mesic semi-natural conditions[J],2022,39(1).
APA	Farsi, Hicham.,Harti, Driss.,Achaaban, Mohamed Rachid.,Piro, Mohammed.,Ouassat, Mohammed.,...&El Allali, Khalid.(2022).Seasonal variations in locomotor activity rhythm and diurnal activity in the dromedary camel (Camelus dromedarius) under mesic semi-natural conditions.CHRONOBIOLOGY INTERNATIONAL,39(1).
MLA	Farsi, Hicham,et al."Seasonal variations in locomotor activity rhythm and diurnal activity in the dromedary camel (Camelus dromedarius) under mesic semi-natural conditions".CHRONOBIOLOGY INTERNATIONAL 39.1(2022).