Coxon Jessica L, Butcher Paul A, Spaet Julia L Y, Rizzari Justin R
School of Life and Environmental Sciences, Deakin University, Waurn Ponds, VIC 3216, Australia.
New South Wales Department of Primary Industries, Fisheries, National Marine Science Centre, Southern Cross University, Coffs Harbour, NSW 2450, Australia.
Biology (Basel). 2022 Oct 1;11(10):1443. doi: 10.3390/biology11101443.
In eastern Australia, white sharks (Carcharodon carcharias) are targeted in shark control programs, yet the movement of subadults and adults of the eastern Australasian population is poorly understood. To investigate horizontal and vertical movement and habitat use in this region, MiniPAT pop-up satellite archival tags were deployed on three larger white sharks (340−388 cm total length) between May 2021 and January 2022. All sharks moved away from the coast after release and displayed a preference for offshore habitats. The upper < 50 m of the water column and temperatures between 14−19 °C were favoured, with a diel pattern of vertical habitat use evident as deeper depths were occupied during the day and shallower depths at night. Horizontal movement consisted of north−south seasonality interspersed with periods of residency. Very little information is available for adult white sharks in eastern Australia and studies like this provide key baseline information for their life history. Importantly, the latitudinal range achieved by white sharks illuminate the necessity for multijurisdictional management to effectively mitigate human-shark interactions whilst supporting conservation efforts of the species.
在澳大利亚东部，大白鲨（噬人鲨）是鲨鱼控制计划的目标对象，但人们对澳大利亚东部种群的亚成体和成年个体的活动情况了解甚少。为了调查该区域大白鲨的水平和垂直移动以及栖息地利用情况，2021年5月至2022年1月期间，在三条体型较大的大白鲨（全长340 - 388厘米）身上部署了MiniPAT弹出式卫星档案标签。所有鲨鱼在被放归后都远离海岸，并表现出对近海栖息地的偏好。它们偏爱水柱上部50米以内、温度在14 - 19摄氏度之间的区域，垂直栖息地利用呈现出昼夜模式，白天占据较深的深度，夜晚占据较浅的深度。水平移动包括南北季节性移动，其间穿插着定居期。关于澳大利亚东部成年大白鲨的信息非常少，这样的研究为它们的生活史提供了关键的基线信息。重要的是，大白鲨所达到的纬度范围表明，有必要进行多辖区管理，以有效减少人与鲨鱼的互动，同时支持该物种的保护工作。
