부산대학교 도서관

This paper presents one of the first applications of pop-up satellite archival tags (PSATs) on giant trevally (Caranx ignobilis) in a "no-take" marine protected area (MPA) in the South China Sea (Dongsha Attol National Park). To determine appropriate management strategies in and around the MPA, fundamental ecological information is required on movement patterns, habitat preferences and home ranges. During May 2016 to September 2018, 10 giant trevally were tagged. Eight tags reported and remained affixed from 17 to 243 days and linear displacements ranged from 26 to 826 km from deployment to pop-up locations. The distributions of time spent at depth (~ 0–67 m) and temperature (21.5–35.4 °C) indicated that fish were mainly confined to the mixed-layer but occasionally made deeper descents during nighttime (~ 50–60 m) than daytime (~ 30–40 m), but the diel transitions were not pronounced. Most probable tracks calculated from a state-space Kalman filter suggested site-fidelity and/or cyclic north to south dispersal patterns possibly related to spawning and/or foraging as half of the pop-up locations were within ~ 100 km of the tagging location. Given these findings, it is possible that giant trevally may need to be managed at larger spatial scales to preserve genetic diversity. Additional tagging studies, however, with genetic data and conventional tags, augmented with a subset of PSATs, will be necessary to test this hypothesis at a higher level of statistical power. [ABSTRACT FROM AUTHOR]