Movement range and behavior of acoustic tagged abalone (Haliotis discus hannai) in Jeonnam marine ranch

Abstract

, were measured by anacoustic telemetry technique. The shape of the sea bottom of the experimental area was surveyed by abathymetry system and three self-recording type acoustic receivers were used for monitoring the behaviorand measuring the movement range. The abalones (WA1-WA4) attached acoustic tags were released andmeasured the movement during ten months. Three abalones (WA1, WA3 and WA4) were successivelydetected around the released point during the experiment and were moved to the V2 area where water depthis deeper than the V1 area. The change of inhabitation depth was also detected from the depth sensor ofWA4. As the result, abalones were moved to deeper water area accordance with the decrease of the watertemperature. The moved ranges of abalones were approximately 200 400m from the release point.Keywords: Acoustic telemetry, Movement behavior of abalone, Acoustic tag, Detection rate