Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Finless porpoise, Neophocaena phocaenoides, Distribution in the South Sea of Korea

남해안 상괭이(Finless porpoise)의 분포

  • 최석관 (국립수산과학원 고래연구소) ;
  • 박겸준 (국립수산과학원 고래연구소) ;
  • 김현우 (국립수산과학원 고래연구소) ;
  • 이영란 (국립수산과학원 고래연구소) ;
  • 박지은 (국립수산과학원 고래연구소) ;
  • 문대연 (국립수산과학원 고래연구소) ;
  • 안용락 (국립수산과학원 고래연구소)
  • Received : 2010.10.01
  • Accepted : 2010.12.01
  • Published : 2010.12.31
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Abstract

To confirm the distributon of finless porpoise, Neophocaena phocaenoides, in the South Sea of Korea, data on bycatch, stranding, and drifting of finless porpoises from 1999 to 2009 were used and a sighting survey was conducted from the R/V Tamgu No. 9 and 10 in June and November, 2009 and March, 2010. The total number of bycaught, stranded, and drifting finless porpoises was 607, with position being known for 186 of these. At the center of Yeosu, there were few position data on bycaught, stranded, and drifting finless porpoises, and data could not confirm the distribution of finless porpoises. Thus, there were limits on the usefulness of bycaught, stranded, and drifting data for confirming the distribution of finless porpoises. In the three sighting surveys, the sighting rate was highest at 0.231 ind./n.m. in the western South Sea in June, 2009. Sighting rate was less than 0.1 ind./n.m. in November, 2009 and March, 2010. This is likely to be due to seasonal migration in western South Sea. All sighting rates in the eastern South Sea were over 0.13 ind./n.m.. According to the results of the sighting survey, finless porpoises are distributed around the islands and inner bay along the path of the research vessel in the South Sea. There were numerous finless porpoises in the offshore areas of Mokpo, Yeosu, Tongyeong, Dadaepo, and Gaduk-do. This study will be utilized as part of a future abundance assessment of finless porpoise in the South Sea of Korea.

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References

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