Study on the Activity Rhythm and Clustering Behavior of Wild Sika Deer Based on Infrared Camera Technology
In order to study the adaptation of captive sika deer in the wild, infrared camera technology was used to investigate the captive wild sika deer in Jiyuan City, Henan Province from May of 2020 to July of 2021. Twenty infrared cameras were placed in the form of kilometer grid, and a total of 3334 effective camera days and 9669 independent photos were obtained. The male-female ratio of adult sika deer was 1.45. A total of 11 cluster patterns were recorded, in which 36.63％ were single females and 37.40％ were single males. The proportion of polygyny cluster reached 9.06％. The second was single young deer, accounting for 4.92％. In the case of carrying juveniles, 371 independ-ent valid photos were taken, mainly by single or multiple females, while only 69 photos were taken in the other two cases.Young carrying by females mainly occurred in summer, while young carrying by males mainly occurred in winter. The diurnal activity rhythm of sika deer was bi-modal, 06:00-08:00 and 16:00-18:00 respectively. In winter, the dual activity period of sika deer was from 08:00 to 16:00, and the peak value occurred from 11:00 to 13:00. The results showed that the overlap coefficient in spring-summer was the largest (Δ=0. 9350, P<0.001), followed by spring-autumn (Δ=0.9134, P<0.01) and winter-spring (Δ=0.8785, P<0.01) and summer-autumn (Δ=0.8760, P<0.01), summer-winter had the smallest overlap coefficient (Δ=0.8214, P<0.01). In this study, the activity rhythm and clustering be-havior of wild sika deer were studied based on the investigation records of wild captive conditions without human interference, which provided the technical basis for the next step of wild release of sika deer.
Sika deerInfrared camera technologyDaily activity rhythmClustering behavior
万方数据
维普
