In reptiles, habitat selection is the process whereby suitable habitat is selected that optimizes physiological functions and behavioral performance. Here, we used the brown forest skink(Sphenomorphus indicus) as a ...In reptiles, habitat selection is the process whereby suitable habitat is selected that optimizes physiological functions and behavioral performance. Here, we used the brown forest skink(Sphenomorphus indicus) as a model animal and examined whether the frequency of active individuals, environmental temperature, illumination of activity area, and habitat type vary with different age classes. We surveyed the number of active individuals and measured environmental variables at Baiyunshan Mountain in Lishui, Zhejiang, China. We found no difference in the activity frequency of adult and juvenile S. indicus; the activity pattern of active individuals was bimodal. The mean environmental temperature selected by adults was higher than that selected by juveniles. The environmental temperature of active areas measured at 0900-1000 h and 1100-1200 h was higher than at 1400-1500h; illumination of the active area at 1000-1200 h was also higher than at 1400h-1600 h. The number of active individuals, the environmental temperature and illumination of activity areas showed pairwise positive correlation. There was a difference in habitat type between juveniles and adults whereby juveniles prefer rock habitats. We predict that active S. indicus select optimal habitats with different environmental temperatures and types to reach the physiological needs particular to their age classes.展开更多
Objective:Sedentary lifestyle is a major risk factor for physical and mental problems,such as cardiovascular,musculoskeletal diseases,and psychological stress.About 60% of the world’s population is not sufficiently p...Objective:Sedentary lifestyle is a major risk factor for physical and mental problems,such as cardiovascular,musculoskeletal diseases,and psychological stress.About 60% of the world’s population is not sufficiently physically active in leisure time or during work and social activities.This study aimed to determine the prevalence of inactive Jordanian adults and describe their demo-graphic and behavioral characteristics.Methods:The study used data from the behavioral risk factors surveillance survey conducted in Jordan in 2007.The sample size was 3654.Respondents who were physically inactive for more than 240 min daily(sleep time not included)were considered to have a sedentary lifestyle.Data were analyzed with the program SPSS.Results:The prevalence of a sedentary lifestyle was 82.8%(2965 respondents),with a mean sedentary time of 587 min(95%confidence interval 581-594 min).Among the physically inactive adults,52.6% were men,one third of them aged 35-44 years.Sedentary lifestyle was reported by 30% of those with a secondary level of education or above.Of those with a sedentary lifestyle,37.6% were housewives and 37.5% were employees;66% of them were overweight and obese.Of the physically inactive people,2.5%had a history of heart failure and 1.3%had a history of cer-ebrovascular accidents;57.2% of them tried to engage more in physical activity and almost three quarters of them were interested in improving their dietary habits.Conclusion:Most Jordanian adults have a sedentary lifestyle,which emphasizes that there is a public health problem.Many of them are attempting to lead a healthier lifestyle.Therefore,there is an urgent need to launch an applicable national plan that enables people to practice a healthier lifestyle.展开更多
基金supported by the Open Research Fund program of Laboratory of Lishui University(2014-26-10)the Scientific Research Foundation of Ph.D.in Lishui University(QD1301)+1 种基金the Science and Technology Planning Project of Lishui(20110426)the Project of Summer Work for Undergraduates in Lishui University(2014-245-23)
文摘In reptiles, habitat selection is the process whereby suitable habitat is selected that optimizes physiological functions and behavioral performance. Here, we used the brown forest skink(Sphenomorphus indicus) as a model animal and examined whether the frequency of active individuals, environmental temperature, illumination of activity area, and habitat type vary with different age classes. We surveyed the number of active individuals and measured environmental variables at Baiyunshan Mountain in Lishui, Zhejiang, China. We found no difference in the activity frequency of adult and juvenile S. indicus; the activity pattern of active individuals was bimodal. The mean environmental temperature selected by adults was higher than that selected by juveniles. The environmental temperature of active areas measured at 0900-1000 h and 1100-1200 h was higher than at 1400-1500h; illumination of the active area at 1000-1200 h was also higher than at 1400h-1600 h. The number of active individuals, the environmental temperature and illumination of activity areas showed pairwise positive correlation. There was a difference in habitat type between juveniles and adults whereby juveniles prefer rock habitats. We predict that active S. indicus select optimal habitats with different environmental temperatures and types to reach the physiological needs particular to their age classes.
文摘Objective:Sedentary lifestyle is a major risk factor for physical and mental problems,such as cardiovascular,musculoskeletal diseases,and psychological stress.About 60% of the world’s population is not sufficiently physically active in leisure time or during work and social activities.This study aimed to determine the prevalence of inactive Jordanian adults and describe their demo-graphic and behavioral characteristics.Methods:The study used data from the behavioral risk factors surveillance survey conducted in Jordan in 2007.The sample size was 3654.Respondents who were physically inactive for more than 240 min daily(sleep time not included)were considered to have a sedentary lifestyle.Data were analyzed with the program SPSS.Results:The prevalence of a sedentary lifestyle was 82.8%(2965 respondents),with a mean sedentary time of 587 min(95%confidence interval 581-594 min).Among the physically inactive adults,52.6% were men,one third of them aged 35-44 years.Sedentary lifestyle was reported by 30% of those with a secondary level of education or above.Of those with a sedentary lifestyle,37.6% were housewives and 37.5% were employees;66% of them were overweight and obese.Of the physically inactive people,2.5%had a history of heart failure and 1.3%had a history of cer-ebrovascular accidents;57.2% of them tried to engage more in physical activity and almost three quarters of them were interested in improving their dietary habits.Conclusion:Most Jordanian adults have a sedentary lifestyle,which emphasizes that there is a public health problem.Many of them are attempting to lead a healthier lifestyle.Therefore,there is an urgent need to launch an applicable national plan that enables people to practice a healthier lifestyle.