Document Number:
WG-FSA-IMAF-2024/20
Submitted By:
Dr Takehiro Okuda (Japan)
Approved By:
Dr Takehiro Okuda (Japan)
Abstract
Pop-up satellite tags (PSATs) have been deployed in D. mawsoni by Japan (since 2017/18 fishing season) and Spain (since 2018/19 fishing season) as a part of research program for exploratory fishery at Subarea 48.6. Table 1 and 2 are metadata of PSAT deployed in Subarea 48.6.
Fig. 1 shows all PSATs indicating movement from the location of fish release to the point where the tag popped-up. Some fishes show long distance migration with a westerly or northwesterly direction. It is noted that the popup position of the tag is possibly different from the actual path of the fish movement due to sea ice drift, for example. To examine actual fish movement, it is required detailed analysis of data obtained from the PSAT.