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
Pacific sleeper sharks(Somniosus pacificus)have long eluded detailed observations of their deep-sea habitats given their ability to dive to depths exceeding 1,000 m[1-4].A cow carcass was deployed at a depth of 1,629 ...Pacific sleeper sharks(Somniosus pacificus)have long eluded detailed observations of their deep-sea habitats given their ability to dive to depths exceeding 1,000 m[1-4].A cow carcass was deployed at a depth of 1,629 m on the continental slope southeast of Hainan Island in the northern South China Sea,attracting 8 individuals of this enigmatic species[5].Video footage has provided new insights into the predating behavior of Pacific sleeper sharks,capturing multiple sharks launching attacks on the carcass and displaying queuing behavior during feeding.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.
基金part of Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)projects(SML-2021SP204,SML2024SP022,SML2023SP238,and 40010102)the Guangdong-NSF China Joint Scheme Key Project(U 1701247).
文摘Pacific sleeper sharks(Somniosus pacificus)have long eluded detailed observations of their deep-sea habitats given their ability to dive to depths exceeding 1,000 m[1-4].A cow carcass was deployed at a depth of 1,629 m on the continental slope southeast of Hainan Island in the northern South China Sea,attracting 8 individuals of this enigmatic species[5].Video footage has provided new insights into the predating behavior of Pacific sleeper sharks,capturing multiple sharks launching attacks on the carcass and displaying queuing behavior during feeding.
